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chengzhenyu
/
lensman
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activity framework

chengzhenyu 8 年之前
父节点
27a9dcb141
当前提交
7a839f759a
共有 32 个文件被更改，包括 2778 次插入 和 1687 次删除
显示文件统计
  1. 30 12
      app/src/main/AndroidManifest.xml
  2. 67 0
      app/src/main/java/ai/pai/lensman/base/BaseActivity.java
  3. 2 2
      app/src/main/java/ai/pai/lensman/box/ApiClient.java
  4. 5 0
      app/src/main/java/ai/pai/lensman/box/ApiService.java
  5. 2 2
      app/src/main/java/ai/pai/lensman/briefs/BriefsActivity.java
  6. 29 0
      app/src/main/java/ai/pai/lensman/login/LoginActivity.java
  7. 2 2
      app/src/main/java/ai/pai/lensman/qrcode/QRCaptureActivity.java
  8. 1 1
      app/src/main/java/ai/pai/lensman/uploadservice/Constants.java
  9. 1 1
      app/src/main/java/ai/pai/lensman/uploadservice/ImageUtils.java
  10. 1 1
      app/src/main/java/ai/pai/lensman/uploadservice/PhotoUploadUtils.java
  11. 128 0
      app/src/main/java/ai/pai/lensman/service/UpgradeService.java
  12. 2 2
      app/src/main/java/ai/pai/lensman/uploadservice/UploadTask.java
  13. 2 2
      app/src/main/java/ai/pai/lensman/session/SessionActivity.java
  14. 2 1
      app/src/main/java/ai/pai/lensman/settings/SettingsActivity.java
  15. 70 0
      app/src/main/java/ai/pai/lensman/splash/SplashActivity.java
  16. 2 2
      app/src/main/java/ai/pai/lensman/upload/UploadActivity.java
  17. 2 0
      app/src/main/java/ai/pai/lensman/utils/UrlContainer.java
  18. 11 1
      app/src/main/res/layout/activity_login.xml
  19. 15 0
      app/src/main/res/layout/activity_splash.xml
  20. 8 0
      app/src/main/res/values/strings.xml
  21. 0 1641
      views/src/main/java/com/android/views/swipeLayout/SwipeLayout.java
  22. 19 0
      views/src/main/java/com/android/views/swipebacklayout/SwipeBackActivityBase.java
  23. 60 0
      views/src/main/java/com/android/views/swipebacklayout/SwipeBackActivityHelper.java
  24. 606 0
      views/src/main/java/com/android/views/swipebacklayout/SwipeBackLayout.java
  25. 103 0
      views/src/main/java/com/android/views/swipebacklayout/Utils.java
  26. 1580 0
      views/src/main/java/com/android/views/swipebacklayout/ViewDragHelper.java
  27. 二进制
      views/src/main/res/drawable/shadow_bottom.png
  28. 二进制
      views/src/main/res/drawable/shadow_left.png
  29. 二进制
      views/src/main/res/drawable/shadow_right.png
  30. 6 0
      views/src/main/res/layout/swipeback_layout.xml
  31. 14 0
      views/src/main/res/values/attrs.xml
  32. 8 17
      views/src/main/res/values/styles.xml

+ 30 - 12
app/src/main/AndroidManifest.xml
查看文件 

@@ -23,9 +23,11 @@
23 23 
         android:theme="@style/AppTheme.NoActionBar">
24 24
25 25 
         <activity
26 
-            android:name=".upload.UploadActivity"
26 
+            android:name=".splash.SplashActivity"
27 27 
             android:configChanges="keyboardHidden|orientation|screenSize"
28 
-            android:label="@string/app_name">
28 
+            android:theme="@android:style/Theme.NoTitleBar.Fullscreen"
29 
+            android:label="@string/app_name"
30 
+            android:screenOrientation="portrait">
29 31
30 32 
             <intent-filter>
31 33 
                 <action android:name="android.intent.action.MAIN" />
 
@@ -35,28 +37,44 @@
35 37 
         </activity>
36 38
37 39 
         <activity
38 
-            android:name=".session.SessionActivity"
40 
+            android:name=".login.LoginActivity"
39 41 
             android:configChanges="keyboardHidden|orientation|screenSize"
40 
-            android:label="@string/app_name">
42 
+            android:label="@string/app_name"
43 
+            android:screenOrientation="portrait">
44 
+
41 45 
         </activity>
42 46
43 47 
         <activity
44 
-            android:name=".qrcode.QRCaptureActivity"
48 
+            android:name=".upload.UploadActivity"
45 49 
             android:configChanges="keyboardHidden|orientation|screenSize"
46 
-            android:label="@string/app_name">
50 
+            android:label="@string/app_name"
51 
+            android:screenOrientation="portrait">
52 
+
47 53 
         </activity>
48 54
49 55 
         <activity
50 
-        android:name=".briefs.BriefsActivity"
51 
-        android:configChanges="keyboardHidden|orientation|screenSize"
52 
-        android:label="@string/app_name">
53 
-    </activity>
56 
+            android:name=".session.SessionActivity"
57 
+            android:configChanges="keyboardHidden|orientation|screenSize"
58 
+            android:label="@string/app_name"
59 
+            android:screenOrientation="portrait"></activity>
60 
+
61 
+        <activity
62 
+            android:name=".qrcode.QRCaptureActivity"
63 
+            android:configChanges="keyboardHidden|orientation|screenSize"
64 
+            android:label="@string/app_name"
65 
+            android:screenOrientation="portrait"></activity>
66 
+
67 
+        <activity
68 
+            android:name=".briefs.BriefsActivity"
69 
+            android:configChanges="keyboardHidden|orientation|screenSize"
70 
+            android:label="@string/app_name"
71 
+            android:screenOrientation="portrait"></activity>
54 72
55 73 
         <activity
56 74 
             android:name=".settings.SettingsActivity"
57 75 
             android:configChanges="keyboardHidden|orientation|screenSize"
58 
-            android:label="@string/app_name">
59 
-        </activity>
76 
+            android:label="@string/app_name"
77 
+            android:screenOrientation="portrait"></activity>
60 78
61 79 
     </application>
62 80

+ 67 - 0
app/src/main/java/ai/pai/lensman/base/BaseActivity.java
查看文件 

@@ -0,0 +1,67 @@
1 
+package ai.pai.lensman.base;
2 
+
3 
+import android.os.Bundle;
4 
+import android.support.v7.app.AppCompatActivity;
5 
+import android.view.View;
6 
+import android.widget.Toast;
7 
+
8 
+import com.android.common.utils.NetworkUtil;
9 
+import com.android.views.swipebacklayout.SwipeBackActivityBase;
10 
+import com.android.views.swipebacklayout.SwipeBackActivityHelper;
11 
+import com.android.views.swipebacklayout.SwipeBackLayout;
12 
+import com.android.views.swipebacklayout.Utils;
13 
+
14 
+import ai.pai.lensman.R;
15 
+
16 
+/**
17 
+ * Created by chengzhenyu on 2015/12/2.
18 
+ */
19 
+public class BaseActivity extends AppCompatActivity implements SwipeBackActivityBase {
20 
+
21 
+    protected  String TAG ;
22 
+
23 
+    private SwipeBackActivityHelper mHelper;
24 
+
25 
+    @Override
26 
+    protected void onCreate(Bundle savedInstanceState) {
27 
+        super.onCreate(savedInstanceState);
28 
+        TAG = getClass().getSimpleName();
29 
+        mHelper = new SwipeBackActivityHelper(this);
30 
+        mHelper.onActivityCreate();
31 
+        if(!NetworkUtil.isNetworkConnected(this)){
32 
+            Toast.makeText(this, R.string.network_disconnect,Toast.LENGTH_SHORT).show();
33 
+        }
34 
+    }
35 
+
36 
+    @Override
37 
+    protected void onPostCreate(Bundle savedInstanceState) {
38 
+        super.onPostCreate(savedInstanceState);
39 
+        mHelper.onPostCreate();
40 
+    }
41 
+
42 
+    @Override
43 
+    public View findViewById(int id) {
44 
+        View v = super.findViewById(id);
45 
+        if (v == null && mHelper != null)
46 
+            return mHelper.findViewById(id);
47 
+        return v;
48 
+    }
49 
+
50 
+    @Override
51 
+    public SwipeBackLayout getSwipeBackLayout() {
52 
+        return mHelper.getSwipeBackLayout();
53 
+    }
54 
+
55 
+    @Override
56 
+    public void setSwipeBackEnable(boolean enable) {
57 
+        getSwipeBackLayout().setEnableGesture(enable);
58 
+    }
59 
+
60 
+    @Override
61 
+    public void scrollToFinishActivity() {
62 
+        Utils.convertActivityToTranslucent(this);
63 
+        getSwipeBackLayout().scrollToFinishActivity();
64 
+    }
65 
+
66 
+
67 
+}

+ 2 - 2
app/src/main/java/ai/pai/lensman/box/ApiClient.java
查看文件 

@@ -22,8 +22,8 @@ public final class ApiClient {
22 22 
     private static final OkHttpClient client = new OkHttpClient.Builder()
23 23 
             .retryOnConnectionFailure(true)
24 24 
             .connectTimeout(10, TimeUnit.SECONDS)
25 
-            .addInterceptor(createUserAgentInterceptor())
26 
-            .addInterceptor(createHttpLoggingInterceptor())
25 
+//            .addInterceptor(createUserAgentInterceptor())
26 
+//            .addInterceptor(createHttpLoggingInterceptor())
27 27 
             .build();
28 28
29 29 
     public static final Gson gson = new GsonBuilder().create();

+ 5 - 0
app/src/main/java/ai/pai/lensman/box/ApiService.java
查看文件 

@@ -5,21 +5,26 @@ import java.util.List;
5 5 
 import ai.pai.lensman.session.PhotoBean;
6 6 
 import retrofit2.Call;
7 7 
 import retrofit2.http.Field;
8 
+import retrofit2.http.FormUrlEncoded;
8 9 
 import retrofit2.http.POST;
9 10
10 11 
 public interface ApiService {
11 12
12 13
13 14 
     @POST("session_start")
15 
+    @FormUrlEncoded
14 16 
     Call<String> startNewSession(@Field("session") String sessionId ,@Field("lensman") String lensmanId);
15 17
16 18 
     @POST("session_end")
19 
+    @FormUrlEncoded
17 20 
     Call<String> endSession(@Field("session") String sessionId, @Field("lensman") String lensmanId);
18 21
19 22 
     @POST("fetch_thumbnail")
23 
+    @FormUrlEncoded
20 24 
     Call<List<PhotoBean>> fetchSessionThumbnails(@Field("session") String sessionId, @Field("lensman") String lensmanId);
21 25
22 26 
     @POST("fetch_origin")
27 
+    @FormUrlEncoded
23 28 
     Call<String> fetchSessionOriginPhoto(@Field("session") String sessionId, @Field("lensman") String lensmanId, @Field("name") String name);
24 29
25 30

+ 2 - 2
app/src/main/java/ai/pai/lensman/briefs/BriefsActivity.java
查看文件 

@@ -3,14 +3,14 @@ package ai.pai.lensman.briefs;
3 3 
 import android.content.Intent;
4 4 
 import android.os.Bundle;
5 5 
 import android.support.annotation.Nullable;
6 
-import android.support.v7.app.AppCompatActivity;
7 6
8 7 
 import ai.pai.lensman.R;
8 
+import ai.pai.lensman.base.BaseActivity;
9 9 
 import ai.pai.lensman.settings.SettingsActivity;
10 10 
 import butterknife.ButterKnife;
11 11 
 import butterknife.OnClick;
12 12
13 
-public class BriefsActivity extends AppCompatActivity{
13 
+public class BriefsActivity extends BaseActivity{
14 14
15 15 
     @Override
16 16 
     protected void onCreate(@Nullable Bundle savedInstanceState) {

+ 29 - 0
app/src/main/java/ai/pai/lensman/login/LoginActivity.java
查看文件 

@@ -0,0 +1,29 @@
1 
+package ai.pai.lensman.login;
2 
+
3 
+import android.content.Intent;
4 
+import android.os.Bundle;
5 
+
6 
+import ai.pai.lensman.R;
7 
+import ai.pai.lensman.base.BaseActivity;
8 
+import ai.pai.lensman.db.Preferences;
9 
+import ai.pai.lensman.upload.UploadActivity;
10 
+import butterknife.ButterKnife;
11 
+import butterknife.OnClick;
12 
+
13 
+public class LoginActivity extends BaseActivity {
14 
+
15 
+    @Override
16 
+    protected void onCreate(Bundle savedInstanceState) {
17 
+        super.onCreate(savedInstanceState);
18 
+        setContentView(R.layout.activity_login);
19 
+        ButterKnife.bind(this);
20 
+    }
21 
+
22 
+    @OnClick(R.id.btn_login)
23 
+    public void login(){
24 
+        Preferences.getInstance(this).setLensManId("hafihafhHDFA");
25 
+        startActivity(new Intent(this, UploadActivity.class));
26 
+        finish();
27 
+    }
28 
+
29 
+}

+ 2 - 2
app/src/main/java/ai/pai/lensman/qrcode/QRCaptureActivity.java
查看文件 

@@ -24,7 +24,6 @@ import android.graphics.BitmapFactory;
24 24 
 import android.graphics.Rect;
25 25 
 import android.os.Bundle;
26 26 
 import android.os.Handler;
27 
-import android.support.v4.app.FragmentActivity;
28 27 
 import android.text.TextUtils;
29 28 
 import android.util.Log;
30 29 
 import android.view.SurfaceHolder;
 
@@ -51,6 +50,7 @@ import java.lang.reflect.Field;
51 50 
 import java.util.Hashtable;
52 51
53 52 
 import ai.pai.lensman.R;
53 
+import ai.pai.lensman.base.BaseActivity;
54 54 
 import ai.pai.lensman.utils.SystemUtils;
55 55 
 import butterknife.BindView;
56 56 
 import butterknife.ButterKnife;
 
@@ -65,7 +65,7 @@ import butterknife.ButterKnife;
65 65 
  * @author dswitkin@google.com (Daniel Switkin)
66 66 
  * @author Sean Owen
67 67 
  */
68 
-public class QRCaptureActivity extends FragmentActivity implements SurfaceHolder.Callback,
68 
+public class QRCaptureActivity extends BaseActivity implements SurfaceHolder.Callback,
69 69 
         View.OnClickListener {
70 70
71 71 
     private static final String TAG = "QRCaptureActivity";

+ 1 - 1
app/src/main/java/ai/pai/lensman/uploadservice/Constants.java
查看文件 

@@ -1,4 +1,4 @@
1 
-package ai.pai.lensman.uploadservice;
1 
+package ai.pai.lensman.service;
2 2
3 3 
 import android.os.Environment;
4 4

+ 1 - 1
app/src/main/java/ai/pai/lensman/uploadservice/ImageUtils.java
查看文件 

@@ -1,4 +1,4 @@
1 
-package ai.pai.lensman.uploadservice;
1 
+package ai.pai.lensman.service;
2 2
3 3 
 import android.graphics.Bitmap;
4 4 
 import android.graphics.BitmapFactory;

+ 1 - 1
app/src/main/java/ai/pai/lensman/uploadservice/PhotoUploadUtils.java
查看文件 

@@ -1,4 +1,4 @@
1 
-package ai.pai.lensman.uploadservice;
1 
+package ai.pai.lensman.service;
2 2
3 3 
 import android.graphics.Bitmap;
4 4 
 import android.graphics.BitmapFactory;

+ 128 - 0
app/src/main/java/ai/pai/lensman/service/UpgradeService.java
查看文件 

@@ -0,0 +1,128 @@
1 
+package ai.pai.lensman.service;
2 
+
3 
+
4 
+import android.app.IntentService;
5 
+import android.content.Intent;
6 
+import android.content.pm.PackageInfo;
7 
+import android.net.Uri;
8 
+import android.os.Handler;
9 
+import android.os.Looper;
10 
+import android.widget.Toast;
11 
+
12 
+import com.android.common.http.HttpUtils;
13 
+import com.android.common.utils.JSONParseUtils;
14 
+import com.android.common.utils.LogHelper;
15 
+
16 
+import org.json.JSONObject;
17 
+
18 
+import java.io.File;
19 
+import java.io.FileOutputStream;
20 
+import java.io.InputStream;
21 
+import java.net.HttpURLConnection;
22 
+import java.net.URL;
23 
+
24 
+import ai.pai.lensman.R;
25 
+import ai.pai.lensman.utils.UrlContainer;
26 
+
27 
+
28 
+public class UpgradeService extends IntentService {
29 
+
30 
+    private static final String TAG = "UpgradeService";
31 
+    private Handler handler;
32 
+
33 
+    public UpgradeService() {
34 
+        super(TAG);
35 
+        handler = new Handler(Looper.getMainLooper());
36 
+    }
37 
+
38 
+    @Override
39 
+    protected void onHandleIntent(Intent intent) {
40 
+        boolean isMuteUpdate = intent.getBooleanExtra("isMuteUpdate",true);
41 
+        try{
42 
+            String result = HttpUtils.doHttpPost(UrlContainer.CHECK_UPDATE_URL,null);
43 
+            LogHelper.d(TAG,"检查更新结果"+result);
44 
+            JSONObject json = new JSONObject(result);
45 
+            int status = json.getInt("status");
46 
+            if(status!=200){
47 
+                LogHelper.d(TAG,"检查更新失败");
48 
+                if(!isMuteUpdate){
49 
+                    handler.post(new Runnable() {
50 
+                        @Override
51 
+                        public void run() {
52 
+                            Toast.makeText(getApplicationContext(), R.string.check_version_fail,Toast.LENGTH_SHORT).show();
53 
+                        }
54 
+                    });
55 
+                }
56 
+                return;
57 
+            }
58 
+            JSONObject data = json.getJSONObject("data");
59 
+            JSONObject appInfo = data.getJSONObject("appinfo");
60 
+            String latestVersionCode = JSONParseUtils.getJSONString(appInfo.getString("latest_version_code"));
61 
+            int versionCode = Integer.parseInt(latestVersionCode);
62 
+            PackageInfo packageInfo = getPackageManager().getPackageInfo(getPackageName(),0);
63 
+            if(versionCode<=packageInfo.versionCode){
64 
+                LogHelper.d(TAG,"不需要更新");
65 
+                if(!isMuteUpdate){
66 
+                    handler.post(new Runnable() {
67 
+                        @Override
68 
+                        public void run() {
69 
+                            Toast.makeText(getApplicationContext(), R.string.current_version_is_latest,Toast.LENGTH_SHORT).show();
70 
+                        }
71 
+                    });
72 
+                }
73 
+                return;
74 
+            }
75 
+            String latestVersionUrl = JSONParseUtils.getJSONString(appInfo.getString("latest_url"));
76 
+            URL url = new URL(latestVersionUrl);
77 
+            HttpURLConnection conn = (HttpURLConnection)url.openConnection();
78 
+            conn.setRequestMethod("GET");
79 
+            conn.setReadTimeout(10000);
80 
+            conn.setConnectTimeout(10000);
81 
+            conn.setRequestProperty("accept", "*/*");
82 
+            conn.connect();
83 
+
84 
+            File dir = new File(Constants.APP_TEMP_DIR);
85 
+            dir.mkdirs();
86 
+            File file = new File(dir,"paiai"+System.currentTimeMillis()+".apk");
87 
+            LogHelper.d(TAG,"需要更新，开始下载，下载到："+file.getAbsolutePath());
88 
+            if(!isMuteUpdate){
89 
+                Toast.makeText(this, R.string.new_version_found,Toast.LENGTH_SHORT).show();
90 
+            }
91 
+            if(!file.exists()){
92 
+                file.createNewFile();
93 
+            }
94 
+            FileOutputStream out = new FileOutputStream(file);
95 
+            InputStream in =conn.getInputStream();
96 
+            int bufSize = 8192;
97 
+            int readLen = 0;
98 
+            int pos = 0;
99 
+            byte[] buffer = new byte[bufSize];
100 
+            while((readLen=in.read(buffer,pos,bufSize-pos))!=-1){
101 
+                out.write(buffer,pos,readLen);
102 
+                pos+=readLen;
103 
+                if(pos>=bufSize){
104 
+                    pos = 0;
105 
+                }
106 
+            }
107 
+            out.flush();
108 
+            in.close();
109 
+            out.close();
110 
+            conn.disconnect();
111 
+            Intent installIntent = new Intent();
112 
+            installIntent.setAction(Intent.ACTION_VIEW);
113 
+            installIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
114 
+            installIntent.setDataAndType(Uri.fromFile(file), "application/vnd.android.package-archive");
115 
+            startActivity(installIntent);
116 
+        }catch (Exception e){
117 
+            if(!isMuteUpdate){
118 
+                handler.post(new Runnable() {
119 
+                    @Override
120 
+                    public void run() {
121 
+                        Toast.makeText(getApplicationContext(), R.string.check_version_fail,Toast.LENGTH_SHORT).show();
122 
+                    }
123 
+                });
124 
+            }
125 
+        }
126 
+    }
127 
+
128 
+}

+ 2 - 2
app/src/main/java/ai/pai/lensman/uploadservice/UploadTask.java
查看文件 

@@ -1,4 +1,4 @@
1 
-package ai.pai.lensman.uploadservice;
1 
+package ai.pai.lensman.service;
2 2
3 3 
 import android.content.Context;
4 4 
 import android.os.AsyncTask;
 
@@ -39,7 +39,7 @@ public class UploadTask extends AsyncTask<String,Integer,Boolean> {
39 39 
             if(photo.exists() &&photo.isFile()){
40 40 
                 PhotoUploadUtils photoUploadUtils = new PhotoUploadUtils(UrlContainer.HOME_PHOTO_URL+"?timestamp="+System.currentTimeMillis());
41 41 
                 photoUploadUtils.addFileParameter("photo", photo);
42 
-                photoUploadUtils.addTextParameter("user_id", Preferences.getInstance(context).getUserId());
42 
+                photoUploadUtils.addTextParameter("user_id", Preferences.getInstance(context).getLensManId());
43 43 
                 photoUploadUtils.addTextParameter("group_id", groupId);
44 44 
                 photoUploadUtils.addTextParameter("nickname", Preferences.getInstance(context).getUserName());
45 45 
                 String result=new String(photoUploadUtils.send(),"UTF-8");

+ 2 - 2
app/src/main/java/ai/pai/lensman/session/SessionActivity.java
查看文件 

@@ -3,20 +3,20 @@ package ai.pai.lensman.session;
3 3 
 import android.app.Activity;
4 4 
 import android.content.Intent;
5 5 
 import android.os.Bundle;
6 
-import android.support.v7.app.AppCompatActivity;
7 6 
 import android.support.v7.widget.LinearLayoutManager;
8 7 
 import android.support.v7.widget.RecyclerView;
9 8 
 import android.view.View;
10 9 
 import android.widget.TextView;
11 10
12 11 
 import ai.pai.lensman.R;
12 
+import ai.pai.lensman.base.BaseActivity;
13 13 
 import ai.pai.lensman.qrcode.QRCaptureActivity;
14 14 
 import ai.pai.lensman.upload.SessionBean;
15 15 
 import butterknife.BindView;
16 16 
 import butterknife.ButterKnife;
17 17 
 import butterknife.OnClick;
18 18
19 
-public class SessionActivity extends AppCompatActivity implements SessionContract.SessionView {
19 
+public class SessionActivity extends BaseActivity implements SessionContract.SessionView {
20 20
21 21 
     @BindView(R.id.icon_no_data) View noPhotoLayout;
22 22 
     @BindView(R.id.title_bar_middle_txt) TextView titleTextView;

+ 2 - 1
app/src/main/java/ai/pai/lensman/settings/SettingsActivity.java
查看文件 

@@ -5,13 +5,14 @@ import android.support.annotation.Nullable;
5 5 
 import android.support.v7.app.AppCompatActivity;
6 6
7 7 
 import ai.pai.lensman.R;
8 
+import ai.pai.lensman.base.BaseActivity;
8 9 
 import butterknife.ButterKnife;
9 10 
 import butterknife.OnClick;
10 11
11 12 
 /**
12 13 
  * Created by chengzhenyu on 2016/7/21.
13 14 
  */
14 
-public class SettingsActivity extends AppCompatActivity {
15 
+public class SettingsActivity extends BaseActivity {
15 16
16 17
17 18 
     @Override

+ 70 - 0
app/src/main/java/ai/pai/lensman/splash/SplashActivity.java
查看文件 

@@ -0,0 +1,70 @@
1 
+package ai.pai.lensman.splash;
2 
+
3 
+import android.content.Intent;
4 
+import android.os.Bundle;
5 
+import android.os.Handler;
6 
+import android.support.v4.app.FragmentActivity;
7 
+
8 
+import com.android.common.utils.NetworkUtil;
9 
+
10 
+import java.text.SimpleDateFormat;
11 
+import java.util.Date;
12 
+
13 
+import ai.pai.lensman.R;
14 
+import ai.pai.lensman.db.Preferences;
15 
+import ai.pai.lensman.login.LoginActivity;
16 
+import ai.pai.lensman.service.UpgradeService;
17 
+import ai.pai.lensman.upload.UploadActivity;
18 
+
19 
+public class SplashActivity extends FragmentActivity {
20 
+
21 
+    private Handler mHandler;
22 
+    private static final int NORMAL_DELAY_TIME = 1500;
23 
+
24 
+    @Override
25 
+    protected void onCreate(Bundle savedInstanceState) {
26 
+        super.onCreate(savedInstanceState);
27 
+        setContentView(R.layout.activity_splash);
28 
+        mHandler = new Handler();
29 
+    }
30 
+
31 
+    @Override
32 
+    protected void onResume() {
33 
+        super.onResume();
34 
+        checkUpdateAndSplash();
35 
+        mHandler.postDelayed(new Runnable() {
36 
+            @Override
37 
+            public void run() {
38 
+                Intent intent ;
39 
+                if(Preferences.getInstance(getApplicationContext()).getLensManId().isEmpty()){
40 
+                    intent = new Intent(SplashActivity.this, LoginActivity.class);
41 
+                }else{
42 
+                    intent = new Intent(SplashActivity.this, UploadActivity.class);
43 
+                }
44 
+                startActivity(intent);
45 
+                finish();
46 
+            }
47 
+        }, NORMAL_DELAY_TIME);
48 
+    }
49 
+
50 
+    @Override
51 
+    protected void onStop() {
52 
+        super.onStop();
53 
+        mHandler.removeCallbacksAndMessages(null);
54 
+    }
55 
+
56 
+    private void checkUpdateAndSplash() {
57 
+        try {
58 
+            String curDate = new SimpleDateFormat("yyyy-MM-dd").format(new Date());
59 
+            if (!Preferences.getInstance(this).getLastRunDate().equals(curDate) && NetworkUtil.isWifiConnected(this)) {
60 
+                Preferences.getInstance(this).setLastRunDate(curDate);
61 
+                Intent intent = new Intent(this, UpgradeService.class);
62 
+                startService(intent);
63 
+            }
64 
+        } catch (Exception e) {
65 
+            e.printStackTrace();
66 
+        }
67 
+    }
68 
+
69 
+
70 
+}

+ 2 - 2
app/src/main/java/ai/pai/lensman/upload/UploadActivity.java
查看文件 

@@ -2,7 +2,6 @@ package ai.pai.lensman.upload;
2 2
3 3 
 import android.content.Intent;
4 4 
 import android.os.Bundle;
5 
-import android.support.v7.app.AppCompatActivity;
6 5 
 import android.support.v7.widget.GridLayoutManager;
7 6 
 import android.support.v7.widget.LinearLayoutManager;
8 7 
 import android.support.v7.widget.RecyclerView;
 
@@ -13,12 +12,13 @@ import android.widget.TextView;
13 12 
 import java.util.ArrayList;
14 13
15 14 
 import ai.pai.lensman.R;
15 
+import ai.pai.lensman.base.BaseActivity;
16 16 
 import ai.pai.lensman.briefs.BriefsActivity;
17 17 
 import butterknife.BindView;
18 18 
 import butterknife.ButterKnife;
19 19 
 import butterknife.OnClick;
20 20
21 
-public class UploadActivity extends AppCompatActivity implements UploadContract.UploadView{
21 
+public class UploadActivity extends BaseActivity implements UploadContract.UploadView{
22 22
23 23 
     @BindView(R.id.tv_bt_status) TextView btStatusTextView;
24 24 
     @BindView(R.id.iv_bt_status) ImageView btStatusImageView;

+ 2 - 0
app/src/main/java/ai/pai/lensman/utils/UrlContainer.java
查看文件 

@@ -9,4 +9,6 @@ public class UrlContainer {
9 9
10 10 
     public static final String HOME_PHOTO_URL = HOST_URL+"pai2/home";
11 11
12 
+    public static final String CHECK_UPDATE_URL = HOST_URL+"op/upgrade";
13 
+
12 14 
 }

+ 11 - 1
app/src/main/res/layout/activity_login.xml
查看文件 

@@ -1,6 +1,16 @@
1 1 
 <?xml version="1.0" encoding="utf-8"?>
2 2 
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
3 3 
     android:orientation="vertical" android:layout_width="match_parent"
4 
-    android:layout_height="match_parent">
4 
+    android:layout_height="match_parent"
5 
+    android:background="@color/background_white">
5 6
7 
+    <Button
8 
+        android:id="@+id/btn_login"
9 
+        android:layout_width="match_parent"
10 
+        android:layout_height="50dp"
11 
+        android:layout_gravity="center"
12 
+        android:gravity="center"
13 
+        android:textSize="20sp"
14 
+        android:textColor="@color/black"
15 
+        android:text="登录"/>
6 16 
 </LinearLayout>

+ 15 - 0
app/src/main/res/layout/activity_splash.xml
查看文件 

@@ -0,0 +1,15 @@
1 
+<?xml version="1.0" encoding="utf-8"?>
2 
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
3 
+    android:orientation="vertical" android:layout_width="match_parent"
4 
+    android:background="@color/white"
5 
+    android:layout_height="match_parent">
6 
+
7 
+    <TextView
8 
+        android:layout_width="match_parent"
9 
+        android:layout_height="wrap_content"
10 
+        android:textSize="40sp"
11 
+        android:layout_gravity="center"
12 
+        android:gravity="center"
13 
+        android:textColor="@color/black"
14 
+        android:text="@string/app_name"/>
15 
+</LinearLayout>

+ 8 - 0
app/src/main/res/values/strings.xml
查看文件 

@@ -7,6 +7,8 @@
7 7 
     <string name="settings">设置</string>
8 8 
     <string name="scene">场景</string>
9 9
10 
+    <string name="network_disconnect">当前无网络连接</string>
11 
+
10 12 
     <string name="qr_scan_hint">将取景框对准二维码，\n即可自动扫码</string>
11 13 
     <string name="qr_scan_album">相册</string>
12 14 
     <string name="scan_album_qr">选择二维码图片</string>
 
@@ -19,4 +21,10 @@
19 21 
     <string name="check_permission_when_open_camera_error">相机打开出错，请检查是否已打开应用的相机权限</string>
20 22
21 23 
     <string name="ok">确定</string>
24 
+
25 
+    <string name="current_version_is_latest">当前版本已是最新，无需升级</string>
26 
+
27 
+    <string name="check_version_fail">检查更新失败，请稍后重试</string>
28 
+
29 
+    <string name="new_version_found">发现新版本，正在更新中</string>
22 30 
 </resources>

+ 0 - 1641
views/src/main/java/com/android/views/swipeLayout/SwipeLayout.java
查看文件 

@@ -1,1641 +0,0 @@
1 
-package com.android.views.swipeLayout;
2 
-
3 
-import android.content.Context;
4 
-import android.content.res.TypedArray;
5 
-import android.graphics.Rect;
6 
-import android.support.annotation.Nullable;
7 
-import android.support.v4.view.GravityCompat;
8 
-import android.support.v4.view.ViewCompat;
9 
-import android.support.v4.widget.ViewDragHelper;
10 
-import android.util.AttributeSet;
11 
-import android.view.GestureDetector;
12 
-import android.view.Gravity;
13 
-import android.view.HapticFeedbackConstants;
14 
-import android.view.MotionEvent;
15 
-import android.view.View;
16 
-import android.view.ViewConfiguration;
17 
-import android.view.ViewGroup;
18 
-import android.view.ViewParent;
19 
-import android.widget.AbsListView;
20 
-import android.widget.AdapterView;
21 
-import android.widget.FrameLayout;
22 
-
23 
-import com.android.views.R;
24 
-
25 
-import java.lang.reflect.Method;
26 
-import java.util.ArrayList;
27 
-import java.util.Arrays;
28 
-import java.util.HashMap;
29 
-import java.util.LinkedHashMap;
30 
-import java.util.List;
31 
-import java.util.Map;
32 
-
33 
-public class SwipeLayout extends FrameLayout {
34 
-
35 
-    private static final int DRAG_LEFT = 1;
36 
-    private static final int DRAG_RIGHT = 2;
37 
-    private static final int DRAG_TOP = 4;
38 
-    private static final int DRAG_BOTTOM = 8;
39 
-    private static final DragEdge DefaultDragEdge = DragEdge.Right;
40 
-
41 
-    private int mTouchSlop;
42 
-
43 
-    private DragEdge mCurrentDragEdge = DefaultDragEdge;
44 
-    private ViewDragHelper mDragHelper;
45 
-
46 
-    private int mDragDistance = 0;
47 
-    private LinkedHashMap<DragEdge, View> mDragEdges = new LinkedHashMap<>();
48 
-    private ShowMode mShowMode;
49 
-
50 
-    private float[] mEdgeSwipesOffset = new float[4];
51 
-
52 
-    private List<SwipeListener> mSwipeListeners = new ArrayList<>();
53 
-    private List<SwipeDenier> mSwipeDeniers = new ArrayList<>();
54 
-    private Map<View, ArrayList<OnRevealListener>> mRevealListeners = new HashMap<>();
55 
-    private Map<View, Boolean> mShowEntirely = new HashMap<>();
56 
-    private Map<View, Rect> mViewBoundCache = new HashMap<>();//save all children's bound, restore in onLayout
57 
-
58 
-    private DoubleClickListener mDoubleClickListener;
59 
-
60 
-    private boolean mSwipeEnabled = true;
61 
-    private boolean[] mSwipesEnabled = new boolean[]{true, true, true, true};
62 
-    private boolean mClickToClose = false;
63 
-    private float mWillOpenPercentAfterOpen=0.75f;
64 
-    private float mWillOpenPercentAfterClose=0.25f;
65 
-
66 
-    public enum DragEdge {
67 
-        Left,
68 
-        Top,
69 
-        Right,
70 
-        Bottom
71 
-    }
72 
-
73 
-    public enum ShowMode {
74 
-        LayDown,
75 
-        PullOut
76 
-    }
77 
-
78 
-    public SwipeLayout(Context context) {
79 
-        this(context, null);
80 
-    }
81 
-
82 
-    public SwipeLayout(Context context, AttributeSet attrs) {
83 
-        this(context, attrs, 0);
84 
-    }
85 
-
86 
-    public SwipeLayout(Context context, AttributeSet attrs, int defStyle) {
87 
-        super(context, attrs, defStyle);
88 
-        mDragHelper = ViewDragHelper.create(this, mDragHelperCallback);
89 
-        mTouchSlop = ViewConfiguration.get(context).getScaledTouchSlop();
90 
-
91 
-        TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.SwipeLayout);
92 
-        int dragEdgeChoices = a.getInt(R.styleable.SwipeLayout_drag_edge, DRAG_RIGHT);
93 
-        mEdgeSwipesOffset[DragEdge.Left.ordinal()] = a.getDimension(R.styleable.SwipeLayout_leftEdgeSwipeOffset, 0);
94 
-        mEdgeSwipesOffset[DragEdge.Right.ordinal()] = a.getDimension(R.styleable.SwipeLayout_rightEdgeSwipeOffset, 0);
95 
-        mEdgeSwipesOffset[DragEdge.Top.ordinal()] = a.getDimension(R.styleable.SwipeLayout_topEdgeSwipeOffset, 0);
96 
-        mEdgeSwipesOffset[DragEdge.Bottom.ordinal()] = a.getDimension(R.styleable.SwipeLayout_bottomEdgeSwipeOffset, 0);
97 
-        setClickToClose(a.getBoolean(R.styleable.SwipeLayout_clickToClose, mClickToClose));
98 
-
99 
-        if ((dragEdgeChoices & DRAG_LEFT) == DRAG_LEFT) {
100 
-            mDragEdges.put(DragEdge.Left, null);
101 
-        }
102 
-        if ((dragEdgeChoices & DRAG_TOP) == DRAG_TOP) {
103 
-            mDragEdges.put(DragEdge.Top, null);
104 
-        }
105 
-        if ((dragEdgeChoices & DRAG_RIGHT) == DRAG_RIGHT) {
106 
-            mDragEdges.put(DragEdge.Right, null);
107 
-        }
108 
-        if ((dragEdgeChoices & DRAG_BOTTOM) == DRAG_BOTTOM) {
109 
-            mDragEdges.put(DragEdge.Bottom, null);
110 
-        }
111 
-        int ordinal = a.getInt(R.styleable.SwipeLayout_show_mode, ShowMode.PullOut.ordinal());
112 
-        mShowMode = ShowMode.values()[ordinal];
113 
-        a.recycle();
114 
-
115 
-    }
116 
-
117 
-    public interface SwipeListener {
118 
-        void onStartOpen(SwipeLayout layout);
119 
-
120 
-        void onOpen(SwipeLayout layout);
121 
-
122 
-        void onStartClose(SwipeLayout layout);
123 
-
124 
-        void onClose(SwipeLayout layout);
125 
-
126 
-        void onUpdate(SwipeLayout layout, int leftOffset, int topOffset);
127 
-
128 
-        void onHandRelease(SwipeLayout layout, float xvel, float yvel);
129 
-    }
130 
-
131 
-    public void addSwipeListener(SwipeListener l) {
132 
-        mSwipeListeners.add(l);
133 
-    }
134 
-
135 
-    public void removeSwipeListener(SwipeListener l) {
136 
-        mSwipeListeners.remove(l);
137 
-    }
138 
-
139 
-    public void removeAllSwipeListener() {
140 
-        mSwipeListeners.clear();
141 
-    }
142 
-
143 
-    public interface SwipeDenier {
144 
-        /*
145 
-         * Called in onInterceptTouchEvent Determines if this swipe event should
146 
-         * be denied Implement this interface if you are using views with swipe
147 
-         * gestures As a child of SwipeLayout
148 
-         *
149 
-         * @return true deny false allow
150 
-         */
151 
-        boolean shouldDenySwipe(MotionEvent ev);
152 
-    }
153 
-
154 
-    public void addSwipeDenier(SwipeDenier denier) {
155 
-        mSwipeDeniers.add(denier);
156 
-    }
157 
-
158 
-    public void removeSwipeDenier(SwipeDenier denier) {
159 
-        mSwipeDeniers.remove(denier);
160 
-    }
161 
-
162 
-    public void removeAllSwipeDeniers() {
163 
-        mSwipeDeniers.clear();
164 
-    }
165 
-
166 
-    public interface OnRevealListener {
167 
-        void onReveal(View child, DragEdge edge, float fraction, int distance);
168 
-    }
169 
-
170 
-    /**
171 
-     * bind a view with a specific
172 
-     */
173 
-    public void addRevealListener(int childId, OnRevealListener l) {
174 
-        View child = findViewById(childId);
175 
-        if (child == null) {
176 
-            throw new IllegalArgumentException("Child does not belong to SwipeListener.");
177 
-        }
178 
-
179 
-        if (!mShowEntirely.containsKey(child)) {
180 
-            mShowEntirely.put(child, false);
181 
-        }
182 
-        if (mRevealListeners.get(child) == null)
183 
-            mRevealListeners.put(child, new ArrayList<OnRevealListener>());
184 
-
185 
-        mRevealListeners.get(child).add(l);
186 
-    }
187 
-
188 
-    /**
189 
-     * bind multiple views with an
190 
-     */
191 
-    public void addRevealListener(int[] childIds, OnRevealListener l) {
192 
-        for (int i : childIds)
193 
-            addRevealListener(i, l);
194 
-    }
195 
-
196 
-    public void removeRevealListener(int childId, OnRevealListener l) {
197 
-        View child = findViewById(childId);
198 
-
199 
-        if (child == null) return;
200 
-
201 
-        mShowEntirely.remove(child);
202 
-        if (mRevealListeners.containsKey(child)) mRevealListeners.get(child).remove(l);
203 
-    }
204 
-
205 
-    public void removeAllRevealListeners(int childId) {
206 
-        View child = findViewById(childId);
207 
-        if (child != null) {
208 
-            mRevealListeners.remove(child);
209 
-            mShowEntirely.remove(child);
210 
-        }
211 
-    }
212 
-
213 
-    private ViewDragHelper.Callback mDragHelperCallback = new ViewDragHelper.Callback() {
214 
-
215 
-        @Override
216 
-        public int clampViewPositionHorizontal(View child, int left, int dx) {
217 
-            if (child == getSurfaceView()) {
218 
-                switch (mCurrentDragEdge) {
219 
-                    case Top:
220 
-                    case Bottom:
221 
-                        return getPaddingLeft();
222 
-                    case Left:
223 
-                        if (left < getPaddingLeft()) return getPaddingLeft();
224 
-                        if (left > getPaddingLeft() + mDragDistance)
225 
-                            return getPaddingLeft() + mDragDistance;
226 
-                        break;
227 
-                    case Right:
228 
-                        if (left > getPaddingLeft()) return getPaddingLeft();
229 
-                        if (left < getPaddingLeft() - mDragDistance)
230 
-                            return getPaddingLeft() - mDragDistance;
231 
-                        break;
232 
-                }
233 
-            } else if (getCurrentBottomView() == child) {
234 
-
235 
-                switch (mCurrentDragEdge) {
236 
-                    case Top:
237 
-                    case Bottom:
238 
-                        return getPaddingLeft();
239 
-                    case Left:
240 
-                        if (mShowMode == ShowMode.PullOut) {
241 
-                            if (left > getPaddingLeft()) return getPaddingLeft();
242 
-                        }
243 
-                        break;
244 
-                    case Right:
245 
-                        if (mShowMode == ShowMode.PullOut) {
246 
-                            if (left < getMeasuredWidth() - mDragDistance) {
247 
-                                return getMeasuredWidth() - mDragDistance;
248 
-                            }
249 
-                        }
250 
-                        break;
251 
-                }
252 
-            }
253 
-            return left;
254 
-        }
255 
-
256 
-        @Override
257 
-        public int clampViewPositionVertical(View child, int top, int dy) {
258 
-            if (child == getSurfaceView()) {
259 
-                switch (mCurrentDragEdge) {
260 
-                    case Left:
261 
-                    case Right:
262 
-                        return getPaddingTop();
263 
-                    case Top:
264 
-                        if (top < getPaddingTop()) return getPaddingTop();
265 
-                        if (top > getPaddingTop() + mDragDistance)
266 
-                            return getPaddingTop() + mDragDistance;
267 
-                        break;
268 
-                    case Bottom:
269 
-                        if (top < getPaddingTop() - mDragDistance) {
270 
-                            return getPaddingTop() - mDragDistance;
271 
-                        }
272 
-                        if (top > getPaddingTop()) {
273 
-                            return getPaddingTop();
274 
-                        }
275 
-                }
276 
-            } else {
277 
-                View surfaceView = getSurfaceView();
278 
-                int surfaceViewTop = surfaceView == null ? 0 : surfaceView.getTop();
279 
-                switch (mCurrentDragEdge) {
280 
-                    case Left:
281 
-                    case Right:
282 
-                        return getPaddingTop();
283 
-                    case Top:
284 
-                        if (mShowMode == ShowMode.PullOut) {
285 
-                            if (top > getPaddingTop()) return getPaddingTop();
286 
-                        } else {
287 
-                            if (surfaceViewTop + dy < getPaddingTop())
288 
-                                return getPaddingTop();
289 
-                            if (surfaceViewTop + dy > getPaddingTop() + mDragDistance)
290 
-                                return getPaddingTop() + mDragDistance;
291 
-                        }
292 
-                        break;
293 
-                    case Bottom:
294 
-                        if (mShowMode == ShowMode.PullOut) {
295 
-                            if (top < getMeasuredHeight() - mDragDistance)
296 
-                                return getMeasuredHeight() - mDragDistance;
297 
-                        } else {
298 
-                            if (surfaceViewTop + dy >= getPaddingTop())
299 
-                                return getPaddingTop();
300 
-                            if (surfaceViewTop + dy <= getPaddingTop() - mDragDistance)
301 
-                                return getPaddingTop() - mDragDistance;
302 
-                        }
303 
-                }
304 
-            }
305 
-            return top;
306 
-        }
307 
-
308 
-        @Override
309 
-        public boolean tryCaptureView(View child, int pointerId) {
310 
-            boolean result = child == getSurfaceView() || getBottomViews().contains(child);
311 
-            if (result) {
312 
-                isCloseBeforeDrag = getOpenStatus() == Status.Close;
313 
-            }
314 
-            return result;
315 
-        }
316 
-
317 
-        @Override
318 
-        public int getViewHorizontalDragRange(View child) {
319 
-            return mDragDistance;
320 
-        }
321 
-
322 
-        @Override
323 
-        public int getViewVerticalDragRange(View child) {
324 
-            return mDragDistance;
325 
-        }
326 
-
327 
-        boolean isCloseBeforeDrag = true;
328 
-
329 
-        @Override
330 
-        public void onViewReleased(View releasedChild, float xvel, float yvel) {
331 
-            super.onViewReleased(releasedChild, xvel, yvel);
332 
-            processHandRelease(xvel, yvel, isCloseBeforeDrag);
333 
-            for (SwipeListener l : mSwipeListeners) {
334 
-                l.onHandRelease(SwipeLayout.this, xvel, yvel);
335 
-            }
336 
-
337 
-            invalidate();
338 
-        }
339 
-
340 
-        @Override
341 
-        public void onViewPositionChanged(View changedView, int left, int top, int dx, int dy) {
342 
-            View surfaceView = getSurfaceView();
343 
-            if (surfaceView == null) return;
344 
-            View currentBottomView = getCurrentBottomView();
345 
-            int evLeft = surfaceView.getLeft(),
346 
-                    evRight = surfaceView.getRight(),
347 
-                    evTop = surfaceView.getTop(),
348 
-                    evBottom = surfaceView.getBottom();
349 
-            if (changedView == surfaceView) {
350 
-
351 
-                if (mShowMode == ShowMode.PullOut && currentBottomView != null) {
352 
-                    if (mCurrentDragEdge == DragEdge.Left || mCurrentDragEdge == DragEdge.Right) {
353 
-                        currentBottomView.offsetLeftAndRight(dx);
354 
-                    } else {
355 
-                        currentBottomView.offsetTopAndBottom(dy);
356 
-                    }
357 
-                }
358 
-
359 
-            } else if (getBottomViews().contains(changedView)) {
360 
-
361 
-                if (mShowMode == ShowMode.PullOut) {
362 
-                    surfaceView.offsetLeftAndRight(dx);
363 
-                    surfaceView.offsetTopAndBottom(dy);
364 
-                } else {
365 
-                    Rect rect = computeBottomLayDown(mCurrentDragEdge);
366 
-                    if (currentBottomView != null) {
367 
-                        currentBottomView.layout(rect.left, rect.top, rect.right, rect.bottom);
368 
-                    }
369 
-
370 
-                    int newLeft = surfaceView.getLeft() + dx, newTop = surfaceView.getTop() + dy;
371 
-
372 
-                    if (mCurrentDragEdge == DragEdge.Left && newLeft < getPaddingLeft())
373 
-                        newLeft = getPaddingLeft();
374 
-                    else if (mCurrentDragEdge == DragEdge.Right && newLeft > getPaddingLeft())
375 
-                        newLeft = getPaddingLeft();
376 
-                    else if (mCurrentDragEdge == DragEdge.Top && newTop < getPaddingTop())
377 
-                        newTop = getPaddingTop();
378 
-                    else if (mCurrentDragEdge == DragEdge.Bottom && newTop > getPaddingTop())
379 
-                        newTop = getPaddingTop();
380 
-
381 
-                    surfaceView.layout(newLeft, newTop, newLeft + getMeasuredWidth(), newTop + getMeasuredHeight());
382 
-                }
383 
-            }
384 
-
385 
-            dispatchRevealEvent(evLeft, evTop, evRight, evBottom);
386 
-
387 
-            dispatchSwipeEvent(evLeft, evTop, dx, dy);
388 
-
389 
-            invalidate();
390 
-
391 
-            captureChildrenBound();
392 
-        }
393 
-    };
394 
-
395 
-    /**
396 
-     * save children's bounds, so they can restore the bound in {@link #onLayout(boolean, int, int, int, int)}
397 
-     */
398 
-    private void captureChildrenBound(){
399 
-        View currentBottomView = getCurrentBottomView();
400 
-        if(getOpenStatus()== Status.Close){
401 
-            mViewBoundCache.remove(currentBottomView);
402 
-            return;
403 
-        }
404 
-
405 
-        View[] views = new View[]{getSurfaceView(), currentBottomView};
406 
-        for (View child : views) {
407 
-            Rect rect = mViewBoundCache.get(child);
408 
-            if(rect==null){
409 
-                rect = new Rect();
410 
-                mViewBoundCache.put(child, rect);
411 
-            }
412 
-            rect.left = child.getLeft();
413 
-            rect.top = child.getTop();
414 
-            rect.right = child.getRight();
415 
-            rect.bottom = child.getBottom();
416 
-        }
417 
-    }
418 
-
419 
-    /**
420 
-     * the dispatchRevealEvent method may not always get accurate position, it
421 
-     * makes the view may not always get the event when the view is totally
422 
-     * show( fraction = 1), so , we need to calculate every time.
423 
-     */
424 
-    protected boolean isViewTotallyFirstShowed(View child, Rect relativePosition, DragEdge edge, int surfaceLeft,
425 
-                                               int surfaceTop, int surfaceRight, int surfaceBottom) {
426 
-        if (mShowEntirely.get(child)) return false;
427 
-        int childLeft = relativePosition.left;
428 
-        int childRight = relativePosition.right;
429 
-        int childTop = relativePosition.top;
430 
-        int childBottom = relativePosition.bottom;
431 
-        boolean r = false;
432 
-        if (getShowMode() == ShowMode.LayDown) {
433 
-            if ((edge == DragEdge.Right && surfaceRight <= childLeft)
434 
-                    || (edge == DragEdge.Left && surfaceLeft >= childRight)
435 
-                    || (edge == DragEdge.Top && surfaceTop >= childBottom)
436 
-                    || (edge == DragEdge.Bottom && surfaceBottom <= childTop)) r = true;
437 
-        } else if (getShowMode() == ShowMode.PullOut) {
438 
-            if ((edge == DragEdge.Right && childRight <= getWidth())
439 
-                    || (edge == DragEdge.Left && childLeft >= getPaddingLeft())
440 
-                    || (edge == DragEdge.Top && childTop >= getPaddingTop())
441 
-                    || (edge == DragEdge.Bottom && childBottom <= getHeight())) r = true;
442 
-        }
443 
-        return r;
444 
-    }
445 
-
446 
-    protected boolean isViewShowing(View child, Rect relativePosition, DragEdge availableEdge, int surfaceLeft,
447 
-                                    int surfaceTop, int surfaceRight, int surfaceBottom) {
448 
-        int childLeft = relativePosition.left;
449 
-        int childRight = relativePosition.right;
450 
-        int childTop = relativePosition.top;
451 
-        int childBottom = relativePosition.bottom;
452 
-        if (getShowMode() == ShowMode.LayDown) {
453 
-            switch (availableEdge) {
454 
-                case Right:
455 
-                    if (surfaceRight > childLeft && surfaceRight <= childRight) {
456 
-                        return true;
457 
-                    }
458 
-                    break;
459 
-                case Left:
460 
-                    if (surfaceLeft < childRight && surfaceLeft >= childLeft) {
461 
-                        return true;
462 
-                    }
463 
-                    break;
464 
-                case Top:
465 
-                    if (surfaceTop >= childTop && surfaceTop < childBottom) {
466 
-                        return true;
467 
-                    }
468 
-                    break;
469 
-                case Bottom:
470 
-                    if (surfaceBottom > childTop && surfaceBottom <= childBottom) {
471 
-                        return true;
472 
-                    }
473 
-                    break;
474 
-            }
475 
-        } else if (getShowMode() == ShowMode.PullOut) {
476 
-            switch (availableEdge) {
477 
-                case Right:
478 
-                    if (childLeft <= getWidth() && childRight > getWidth()) return true;
479 
-                    break;
480 
-                case Left:
481 
-                    if (childRight >= getPaddingLeft() && childLeft < getPaddingLeft()) return true;
482 
-                    break;
483 
-                case Top:
484 
-                    if (childTop < getPaddingTop() && childBottom >= getPaddingTop()) return true;
485 
-                    break;
486 
-                case Bottom:
487 
-                    if (childTop < getHeight() && childTop >= getPaddingTop()) return true;
488 
-                    break;
489 
-            }
490 
-        }
491 
-        return false;
492 
-    }
493 
-
494 
-    protected Rect getRelativePosition(View child) {
495 
-        View t = child;
496 
-        Rect r = new Rect(t.getLeft(), t.getTop(), 0, 0);
497 
-        while (t.getParent() != null && t != getRootView()) {
498 
-            t = (View) t.getParent();
499 
-            if (t == this) break;
500 
-            r.left += t.getLeft();
501 
-            r.top += t.getTop();
502 
-        }
503 
-        r.right = r.left + child.getMeasuredWidth();
504 
-        r.bottom = r.top + child.getMeasuredHeight();
505 
-        return r;
506 
-    }
507 
-
508 
-    private int mEventCounter = 0;
509 
-
510 
-    protected void dispatchSwipeEvent(int surfaceLeft, int surfaceTop, int dx, int dy) {
511 
-        DragEdge edge = getDragEdge();
512 
-        boolean open = true;
513 
-        if (edge == DragEdge.Left) {
514 
-            if (dx < 0) open = false;
515 
-        } else if (edge == DragEdge.Right) {
516 
-            if (dx > 0) open = false;
517 
-        } else if (edge == DragEdge.Top) {
518 
-            if (dy < 0) open = false;
519 
-        } else if (edge == DragEdge.Bottom) {
520 
-            if (dy > 0) open = false;
521 
-        }
522 
-
523 
-        dispatchSwipeEvent(surfaceLeft, surfaceTop, open);
524 
-    }
525 
-
526 
-    protected void dispatchSwipeEvent(int surfaceLeft, int surfaceTop, boolean open) {
527 
-        safeBottomView();
528 
-        Status status = getOpenStatus();
529 
-
530 
-        if (!mSwipeListeners.isEmpty()) {
531 
-            mEventCounter++;
532 
-            for (SwipeListener l : mSwipeListeners) {
533 
-                if (mEventCounter == 1) {
534 
-                    if (open) {
535 
-                        l.onStartOpen(this);
536 
-                    } else {
537 
-                        l.onStartClose(this);
538 
-                    }
539 
-                }
540 
-                l.onUpdate(SwipeLayout.this, surfaceLeft - getPaddingLeft(), surfaceTop - getPaddingTop());
541 
-            }
542 
-
543 
-            if (status == Status.Close) {
544 
-                for (SwipeListener l : mSwipeListeners) {
545 
-                    l.onClose(SwipeLayout.this);
546 
-                }
547 
-                mEventCounter = 0;
548 
-            }
549 
-
550 
-            if (status == Status.Open) {
551 
-                View currentBottomView = getCurrentBottomView();
552 
-                if (currentBottomView != null) {
553 
-                    currentBottomView.setEnabled(true);
554 
-                }
555 
-                for (SwipeListener l : mSwipeListeners) {
556 
-                    l.onOpen(SwipeLayout.this);
557 
-                }
558 
-                mEventCounter = 0;
559 
-            }
560 
-        }
561 
-    }
562 
-
563 
-    /**
564 
-     * prevent bottom view get any touch event. Especially in LayDown mode.
565 
-     */
566 
-    private void safeBottomView() {
567 
-        Status status = getOpenStatus();
568 
-        List<View> bottoms = getBottomViews();
569 
-
570 
-        if (status == Status.Close) {
571 
-            for (View bottom : bottoms) {
572 
-                if (bottom != null && bottom.getVisibility() != INVISIBLE) {
573 
-                    bottom.setVisibility(INVISIBLE);
574 
-                }
575 
-            }
576 
-        } else {
577 
-            View currentBottomView = getCurrentBottomView();
578 
-            if (currentBottomView != null && currentBottomView.getVisibility() != VISIBLE) {
579 
-                currentBottomView.setVisibility(VISIBLE);
580 
-            }
581 
-        }
582 
-    }
583 
-
584 
-    protected void dispatchRevealEvent(final int surfaceLeft, final int surfaceTop, final int surfaceRight,
585 
-                                       final int surfaceBottom) {
586 
-        if (mRevealListeners.isEmpty()) return;
587 
-        for (Map.Entry<View, ArrayList<OnRevealListener>> entry : mRevealListeners.entrySet()) {
588 
-            View child = entry.getKey();
589 
-            Rect rect = getRelativePosition(child);
590 
-            if (isViewShowing(child, rect, mCurrentDragEdge, surfaceLeft, surfaceTop,
591 
-                    surfaceRight, surfaceBottom)) {
592 
-                mShowEntirely.put(child, false);
593 
-                int distance = 0;
594 
-                float fraction = 0f;
595 
-                if (getShowMode() == ShowMode.LayDown) {
596 
-                    switch (mCurrentDragEdge) {
597 
-                        case Left:
598 
-                            distance = rect.left - surfaceLeft;
599 
-                            fraction = distance / (float) child.getWidth();
600 
-                            break;
601 
-                        case Right:
602 
-                            distance = rect.right - surfaceRight;
603 
-                            fraction = distance / (float) child.getWidth();
604 
-                            break;
605 
-                        case Top:
606 
-                            distance = rect.top - surfaceTop;
607 
-                            fraction = distance / (float) child.getHeight();
608 
-                            break;
609 
-                        case Bottom:
610 
-                            distance = rect.bottom - surfaceBottom;
611 
-                            fraction = distance / (float) child.getHeight();
612 
-                            break;
613 
-                    }
614 
-                } else if (getShowMode() == ShowMode.PullOut) {
615 
-                    switch (mCurrentDragEdge) {
616 
-                        case Left:
617 
-                            distance = rect.right - getPaddingLeft();
618 
-                            fraction = distance / (float) child.getWidth();
619 
-                            break;
620 
-                        case Right:
621 
-                            distance = rect.left - getWidth();
622 
-                            fraction = distance / (float) child.getWidth();
623 
-                            break;
624 
-                        case Top:
625 
-                            distance = rect.bottom - getPaddingTop();
626 
-                            fraction = distance / (float) child.getHeight();
627 
-                            break;
628 
-                        case Bottom:
629 
-                            distance = rect.top - getHeight();
630 
-                            fraction = distance / (float) child.getHeight();
631 
-                            break;
632 
-                    }
633 
-                }
634 
-
635 
-                for (OnRevealListener l : entry.getValue()) {
636 
-                    l.onReveal(child, mCurrentDragEdge, Math.abs(fraction), distance);
637 
-                    if (Math.abs(fraction) == 1) {
638 
-                        mShowEntirely.put(child, true);
639 
-                    }
640 
-                }
641 
-            }
642 
-
643 
-            if (isViewTotallyFirstShowed(child, rect, mCurrentDragEdge, surfaceLeft, surfaceTop,
644 
-                    surfaceRight, surfaceBottom)) {
645 
-                mShowEntirely.put(child, true);
646 
-                for (OnRevealListener l : entry.getValue()) {
647 
-                    if (mCurrentDragEdge == DragEdge.Left
648 
-                            || mCurrentDragEdge == DragEdge.Right)
649 
-                        l.onReveal(child, mCurrentDragEdge, 1, child.getWidth());
650 
-                    else
651 
-                        l.onReveal(child, mCurrentDragEdge, 1, child.getHeight());
652 
-                }
653 
-            }
654 
-
655 
-        }
656 
-    }
657 
-
658 
-    @Override
659 
-    public void computeScroll() {
660 
-        super.computeScroll();
661 
-        if (mDragHelper.continueSettling(true)) {
662 
-            ViewCompat.postInvalidateOnAnimation(this);
663 
-        }
664 
-    }
665 
-
666 
-    /**
667 
-     * {@link OnLayoutChangeListener} added in API 11. I need
668 
-     * to support it from API 8.
669 
-     */
670 
-    public interface OnLayout {
671 
-        void onLayout(SwipeLayout v);
672 
-    }
673 
-
674 
-    private List<OnLayout> mOnLayoutListeners;
675 
-
676 
-    public void addOnLayoutListener(OnLayout l) {
677 
-        if (mOnLayoutListeners == null) mOnLayoutListeners = new ArrayList<OnLayout>();
678 
-        mOnLayoutListeners.add(l);
679 
-    }
680 
-
681 
-    public void removeOnLayoutListener(OnLayout l) {
682 
-        if (mOnLayoutListeners != null) mOnLayoutListeners.remove(l);
683 
-    }
684 
-
685 
-    public void clearDragEdge() {
686 
-        mDragEdges.clear();
687 
-    }
688 
-
689 
-    public void setDrag(DragEdge dragEdge, int childId) {
690 
-        clearDragEdge();
691 
-        addDrag(dragEdge, childId);
692 
-    }
693 
-
694 
-    public void setDrag(DragEdge dragEdge, View child) {
695 
-        clearDragEdge();
696 
-        addDrag(dragEdge, child);
697 
-    }
698 
-
699 
-    public void addDrag(DragEdge dragEdge, int childId) {
700 
-        addDrag(dragEdge, findViewById(childId), null);
701 
-    }
702 
-
703 
-    public void addDrag(DragEdge dragEdge, View child) {
704 
-        addDrag(dragEdge, child, null);
705 
-    }
706 
-
707 
-    public void addDrag(DragEdge dragEdge, View child, ViewGroup.LayoutParams params) {
708 
-        if (child == null) return;
709 
-
710 
-        if (params == null) {
711 
-            params = generateDefaultLayoutParams();
712 
-        }
713 
-        if (!checkLayoutParams(params)) {
714 
-            params = generateLayoutParams(params);
715 
-        }
716 
-        int gravity = -1;
717 
-        switch (dragEdge) {
718 
-            case Left:
719 
-                gravity = Gravity.LEFT;
720 
-                break;
721 
-            case Right:
722 
-                gravity = Gravity.RIGHT;
723 
-                break;
724 
-            case Top:
725 
-                gravity = Gravity.TOP;
726 
-                break;
727 
-            case Bottom:
728 
-                gravity = Gravity.BOTTOM;
729 
-                break;
730 
-        }
731 
-        if (params instanceof LayoutParams) {
732 
-            ((LayoutParams) params).gravity = gravity;
733 
-        }
734 
-        addView(child, 0, params);
735 
-    }
736 
-
737 
-    @Override
738 
-    public void addView(View child, int index, ViewGroup.LayoutParams params) {
739 
-        if (child == null) return;
740 
-        int gravity = Gravity.NO_GRAVITY;
741 
-        try {
742 
-            gravity = (Integer) params.getClass().getField("gravity").get(params);
743 
-        } catch (Exception e) {
744 
-            e.printStackTrace();
745 
-        }
746 
-
747 
-        if (gravity > 0) {
748 
-            gravity = GravityCompat.getAbsoluteGravity(gravity, ViewCompat.getLayoutDirection(this));
749 
-
750 
-            if ((gravity & Gravity.LEFT) == Gravity.LEFT) {
751 
-                mDragEdges.put(DragEdge.Left, child);
752 
-            }
753 
-            if ((gravity & Gravity.RIGHT) == Gravity.RIGHT) {
754 
-                mDragEdges.put(DragEdge.Right, child);
755 
-            }
756 
-            if ((gravity & Gravity.TOP) == Gravity.TOP) {
757 
-                mDragEdges.put(DragEdge.Top, child);
758 
-            }
759 
-            if ((gravity & Gravity.BOTTOM) == Gravity.BOTTOM) {
760 
-                mDragEdges.put(DragEdge.Bottom, child);
761 
-            }
762 
-        } else {
763 
-            for (Map.Entry<DragEdge, View> entry : mDragEdges.entrySet()) {
764 
-                if (entry.getValue() == null) {
765 
-                    //means used the drag_edge attr, the no gravity child should be use set
766 
-                    mDragEdges.put(entry.getKey(), child);
767 
-                    break;
768 
-                }
769 
-            }
770 
-        }
771 
-        if (child.getParent() == this) {
772 
-            return;
773 
-        }
774 
-        super.addView(child, index, params);
775 
-    }
776 
-
777 
-    @Override
778 
-    protected void onLayout(boolean changed, int l, int t, int r, int b) {
779 
-        updateBottomViews();
780 
-
781 
-        if (mOnLayoutListeners != null) for (int i = 0; i < mOnLayoutListeners.size(); i++) {
782 
-            mOnLayoutListeners.get(i).onLayout(this);
783 
-        }
784 
-    }
785 
-
786 
-    void layoutPullOut() {
787 
-        View surfaceView = getSurfaceView();
788 
-        Rect surfaceRect = mViewBoundCache.get(surfaceView);
789 
-        if(surfaceRect == null) surfaceRect = computeSurfaceLayoutArea(false);
790 
-        if (surfaceView != null) {
791 
-            surfaceView.layout(surfaceRect.left, surfaceRect.top, surfaceRect.right, surfaceRect.bottom);
792 
-            bringChildToFront(surfaceView);
793 
-        }
794 
-        View currentBottomView = getCurrentBottomView();
795 
-        Rect bottomViewRect = mViewBoundCache.get(currentBottomView);
796 
-        if(bottomViewRect == null) bottomViewRect = computeBottomLayoutAreaViaSurface(ShowMode.PullOut, surfaceRect);
797 
-        if (currentBottomView != null) {
798 
-            currentBottomView.layout(bottomViewRect.left, bottomViewRect.top, bottomViewRect.right, bottomViewRect.bottom);
799 
-        }
800 
-    }
801 
-
802 
-    void layoutLayDown() {
803 
-        View surfaceView = getSurfaceView();
804 
-        Rect surfaceRect = mViewBoundCache.get(surfaceView);
805 
-        if(surfaceRect == null) surfaceRect = computeSurfaceLayoutArea(false);
806 
-        if (surfaceView != null) {
807 
-            surfaceView.layout(surfaceRect.left, surfaceRect.top, surfaceRect.right, surfaceRect.bottom);
808 
-            bringChildToFront(surfaceView);
809 
-        }
810 
-        View currentBottomView = getCurrentBottomView();
811 
-        Rect bottomViewRect = mViewBoundCache.get(currentBottomView);
812 
-        if(bottomViewRect == null) bottomViewRect = computeBottomLayoutAreaViaSurface(ShowMode.LayDown, surfaceRect);
813 
-        if (currentBottomView != null) {
814 
-            currentBottomView.layout(bottomViewRect.left, bottomViewRect.top, bottomViewRect.right, bottomViewRect.bottom);
815 
-        }
816 
-    }
817 
-
818 
-    private boolean mIsBeingDragged;
819 
-
820 
-    private void checkCanDrag(MotionEvent ev) {
821 
-        if (mIsBeingDragged) return;
822 
-        if (getOpenStatus() == Status.Middle) {
823 
-            mIsBeingDragged = true;
824 
-            return;
825 
-        }
826 
-        Status status = getOpenStatus();
827 
-        float distanceX = ev.getRawX() - sX;
828 
-        float distanceY = ev.getRawY() - sY;
829 
-        float angle = Math.abs(distanceY / distanceX);
830 
-        angle = (float) Math.toDegrees(Math.atan(angle));
831 
-        if (getOpenStatus() == Status.Close) {
832 
-            DragEdge dragEdge;
833 
-            if (angle < 45) {
834 
-                if (distanceX > 0 && isLeftSwipeEnabled()) {
835 
-                    dragEdge = DragEdge.Left;
836 
-                } else if (distanceX < 0 && isRightSwipeEnabled()) {
837 
-                    dragEdge = DragEdge.Right;
838 
-                } else return;
839 
-
840 
-            } else {
841 
-                if (distanceY > 0 && isTopSwipeEnabled()) {
842 
-                    dragEdge = DragEdge.Top;
843 
-                } else if (distanceY < 0 && isBottomSwipeEnabled()) {
844 
-                    dragEdge = DragEdge.Bottom;
845 
-                } else return;
846 
-            }
847 
-            setCurrentDragEdge(dragEdge);
848 
-        }
849 
-
850 
-        boolean doNothing = false;
851 
-        if (mCurrentDragEdge == DragEdge.Right) {
852 
-            boolean suitable = (status == Status.Open && distanceX > mTouchSlop)
853 
-                    || (status == Status.Close && distanceX < -mTouchSlop);
854 
-            suitable = suitable || (status == Status.Middle);
855 
-
856 
-            if (angle > 30 || !suitable) {
857 
-                doNothing = true;
858 
-            }
859 
-        }
860 
-
861 
-        if (mCurrentDragEdge == DragEdge.Left) {
862 
-            boolean suitable = (status == Status.Open && distanceX < -mTouchSlop)
863 
-                    || (status == Status.Close && distanceX > mTouchSlop);
864 
-            suitable = suitable || status == Status.Middle;
865 
-
866 
-            if (angle > 30 || !suitable) {
867 
-                doNothing = true;
868 
-            }
869 
-        }
870 
-
871 
-        if (mCurrentDragEdge == DragEdge.Top) {
872 
-            boolean suitable = (status == Status.Open && distanceY < -mTouchSlop)
873 
-                    || (status == Status.Close && distanceY > mTouchSlop);
874 
-            suitable = suitable || status == Status.Middle;
875 
-
876 
-            if (angle < 60 || !suitable) {
877 
-                doNothing = true;
878 
-            }
879 
-        }
880 
-
881 
-        if (mCurrentDragEdge == DragEdge.Bottom) {
882 
-            boolean suitable = (status == Status.Open && distanceY > mTouchSlop)
883 
-                    || (status == Status.Close && distanceY < -mTouchSlop);
884 
-            suitable = suitable || status == Status.Middle;
885 
-
886 
-            if (angle < 60 || !suitable) {
887 
-                doNothing = true;
888 
-            }
889 
-        }
890 
-        mIsBeingDragged = !doNothing;
891 
-    }
892 
-
893 
-    @Override
894 
-    public boolean onInterceptTouchEvent(MotionEvent ev) {
895 
-        if (!isSwipeEnabled()) {
896 
-            return false;
897 
-        }
898 
-        if (mClickToClose && getOpenStatus() == Status.Open && isTouchOnSurface(ev)) {
899 
-            return true;
900 
-        }
901 
-        for (SwipeDenier denier : mSwipeDeniers) {
902 
-            if (denier != null && denier.shouldDenySwipe(ev)) {
903 
-                return false;
904 
-            }
905 
-        }
906 
-
907 
-        switch (ev.getAction()) {
908 
-            case MotionEvent.ACTION_DOWN:
909 
-                mDragHelper.processTouchEvent(ev);
910 
-                mIsBeingDragged = false;
911 
-                sX = ev.getRawX();
912 
-                sY = ev.getRawY();
913 
-                //if the swipe is in middle state(scrolling), should intercept the touch
914 
-                if (getOpenStatus() == Status.Middle) {
915 
-                    mIsBeingDragged = true;
916 
-                }
917 
-                break;
918 
-            case MotionEvent.ACTION_MOVE:
919 
-                boolean beforeCheck = mIsBeingDragged;
920 
-                checkCanDrag(ev);
921 
-                if (mIsBeingDragged) {
922 
-                    ViewParent parent = getParent();
923 
-                    if (parent != null) {
924 
-                        parent.requestDisallowInterceptTouchEvent(true);
925 
-                    }
926 
-                }
927 
-                if (!beforeCheck && mIsBeingDragged) {
928 
-                    //let children has one chance to catch the touch, and request the swipe not intercept
929 
-                    //useful when swipeLayout wrap a swipeLayout or other gestural layout
930 
-                    return false;
931 
-                }
932 
-                break;
933 
-
934 
-            case MotionEvent.ACTION_CANCEL:
935 
-            case MotionEvent.ACTION_UP:
936 
-                mIsBeingDragged = false;
937 
-                mDragHelper.processTouchEvent(ev);
938 
-                break;
939 
-            default://handle other action, such as ACTION_POINTER_DOWN/UP
940 
-                mDragHelper.processTouchEvent(ev);
941 
-        }
942 
-        return mIsBeingDragged;
943 
-    }
944 
-
945 
-    private float sX = -1, sY = -1;
946 
-
947 
-    @Override
948 
-    public boolean onTouchEvent(MotionEvent event) {
949 
-        if (!isSwipeEnabled()) return super.onTouchEvent(event);
950 
-
951 
-        int action = event.getActionMasked();
952 
-        gestureDetector.onTouchEvent(event);
953 
-
954 
-        switch (action) {
955 
-            case MotionEvent.ACTION_DOWN:
956 
-                mDragHelper.processTouchEvent(event);
957 
-                sX = event.getRawX();
958 
-                sY = event.getRawY();
959 
-
960 
-
961 
-            case MotionEvent.ACTION_MOVE: {
962 
-                //the drag state and the direction are already judged at onInterceptTouchEvent
963 
-                checkCanDrag(event);
964 
-                if (mIsBeingDragged) {
965 
-                    getParent().requestDisallowInterceptTouchEvent(true);
966 
-                    mDragHelper.processTouchEvent(event);
967 
-                }
968 
-                break;
969 
-            }
970 
-            case MotionEvent.ACTION_UP:
971 
-            case MotionEvent.ACTION_CANCEL:
972 
-                mIsBeingDragged = false;
973 
-                mDragHelper.processTouchEvent(event);
974 
-                break;
975 
-
976 
-            default://handle other action, such as ACTION_POINTER_DOWN/UP
977 
-                mDragHelper.processTouchEvent(event);
978 
-        }
979 
-
980 
-        return super.onTouchEvent(event) || mIsBeingDragged || action == MotionEvent.ACTION_DOWN;
981 
-    }
982 
-
983 
-    public boolean isClickToClose() {
984 
-        return mClickToClose;
985 
-    }
986 
-
987 
-    public void setClickToClose(boolean mClickToClose) {
988 
-        this.mClickToClose = mClickToClose;
989 
-    }
990 
-
991 
-    public void setSwipeEnabled(boolean enabled) {
992 
-        mSwipeEnabled = enabled;
993 
-    }
994 
-
995 
-    public boolean isSwipeEnabled() {
996 
-        return mSwipeEnabled;
997 
-    }
998 
-
999 
-    public boolean isLeftSwipeEnabled() {
1000 
-        View bottomView = mDragEdges.get(DragEdge.Left);
1001 
-        return bottomView != null && bottomView.getParent() == this
1002 
-                && bottomView != getSurfaceView() && mSwipesEnabled[DragEdge.Left.ordinal()];
1003 
-    }
1004 
-
1005 
-    public void setLeftSwipeEnabled(boolean leftSwipeEnabled) {
1006 
-        this.mSwipesEnabled[DragEdge.Left.ordinal()] = leftSwipeEnabled;
1007 
-    }
1008 
-
1009 
-    public boolean isRightSwipeEnabled() {
1010 
-        View bottomView = mDragEdges.get(DragEdge.Right);
1011 
-        return bottomView != null && bottomView.getParent() == this
1012 
-                && bottomView != getSurfaceView() && mSwipesEnabled[DragEdge.Right.ordinal()];
1013 
-    }
1014 
-
1015 
-    public void setRightSwipeEnabled(boolean rightSwipeEnabled) {
1016 
-        this.mSwipesEnabled[DragEdge.Right.ordinal()] = rightSwipeEnabled;
1017 
-    }
1018 
-
1019 
-    public boolean isTopSwipeEnabled() {
1020 
-        View bottomView = mDragEdges.get(DragEdge.Top);
1021 
-        return bottomView != null && bottomView.getParent() == this
1022 
-                && bottomView != getSurfaceView() && mSwipesEnabled[DragEdge.Top.ordinal()];
1023 
-    }
1024 
-
1025 
-    public void setTopSwipeEnabled(boolean topSwipeEnabled) {
1026 
-        this.mSwipesEnabled[DragEdge.Top.ordinal()] = topSwipeEnabled;
1027 
-    }
1028 
-
1029 
-    public boolean isBottomSwipeEnabled() {
1030 
-        View bottomView = mDragEdges.get(DragEdge.Bottom);
1031 
-        return bottomView != null && bottomView.getParent() == this
1032 
-                && bottomView != getSurfaceView() && mSwipesEnabled[DragEdge.Bottom.ordinal()];
1033 
-    }
1034 
-
1035 
-    public void setBottomSwipeEnabled(boolean bottomSwipeEnabled) {
1036 
-        this.mSwipesEnabled[DragEdge.Bottom.ordinal()] = bottomSwipeEnabled;
1037 
-    }
1038 
-    /***
1039 
-     * Returns the percentage of revealing at which the view below should the view finish opening
1040 
-     * if it was already open before dragging
1041 
-     * @returns  The percentage of view revealed to trigger, default value is 0.25
1042 
-     */
1043 
-    public float getWillOpenPercentAfterOpen() {
1044 
-        return mWillOpenPercentAfterOpen;
1045 
-    }
1046 
-
1047 
-    /***
1048 
-     * Allows to stablish at what percentage of revealing the view below should the view finish opening
1049 
-     * if it was already open before dragging
1050 
-     * @param willOpenPercentAfterOpen The percentage of view revealed to trigger, default value is 0.25
1051 
-     */
1052 
-    public void setWillOpenPercentAfterOpen(float willOpenPercentAfterOpen) {
1053 
-        this.mWillOpenPercentAfterOpen = willOpenPercentAfterOpen;
1054 
-    }
1055 
-    /***
1056 
-     * Returns the percentage of revealing at which the view below should the view finish opening
1057 
-     * if it was already closed before dragging
1058 
-     * @returns  The percentage of view revealed to trigger, default value is 0.25
1059 
-     */
1060 
-    public float getWillOpenPercentAfterClose() {
1061 
-        return mWillOpenPercentAfterClose;
1062 
-    }
1063 
-    /***
1064 
-     * Allows to stablish at what percentage of revealing the view below should the view finish opening
1065 
-     * if it was already closed before dragging
1066 
-     * @param willOpenPercentAfterClose The percentage of view revealed to trigger, default value is 0.75
1067 
-     */
1068 
-    public void setWillOpenPercentAfterClose(float willOpenPercentAfterClose) {
1069 
-        this.mWillOpenPercentAfterClose = willOpenPercentAfterClose;
1070 
-    }
1071 
-
1072 
-    private boolean insideAdapterView() {
1073 
-        return getAdapterView() != null;
1074 
-    }
1075 
-
1076 
-    private AdapterView getAdapterView() {
1077 
-        ViewParent t = getParent();
1078 
-        if (t instanceof AdapterView) {
1079 
-            return (AdapterView) t;
1080 
-        }
1081 
-        return null;
1082 
-    }
1083 
-
1084 
-    private void performAdapterViewItemClick() {
1085 
-        if (getOpenStatus() != Status.Close) return;
1086 
-        ViewParent t = getParent();
1087 
-        if (t instanceof AdapterView) {
1088 
-            AdapterView view = (AdapterView) t;
1089 
-            int p = view.getPositionForView(SwipeLayout.this);
1090 
-            if (p != AdapterView.INVALID_POSITION) {
1091 
-                view.performItemClick(view.getChildAt(p - view.getFirstVisiblePosition()), p, view
1092 
-                        .getAdapter().getItemId(p));
1093 
-            }
1094 
-        }
1095 
-    }
1096 
-
1097 
-    private boolean performAdapterViewItemLongClick() {
1098 
-        if (getOpenStatus() != Status.Close) return false;
1099 
-        ViewParent t = getParent();
1100 
-        if (t instanceof AdapterView) {
1101 
-            AdapterView view = (AdapterView) t;
1102 
-            int p = view.getPositionForView(SwipeLayout.this);
1103 
-            if (p == AdapterView.INVALID_POSITION) return false;
1104 
-            long vId = view.getItemIdAtPosition(p);
1105 
-            boolean handled = false;
1106 
-            try {
1107 
-                Method m = AbsListView.class.getDeclaredMethod("performLongPress", View.class, int.class, long.class);
1108 
-                m.setAccessible(true);
1109 
-                handled = (boolean) m.invoke(view, SwipeLayout.this, p, vId);
1110 
-
1111 
-            } catch (Exception e) {
1112 
-                e.printStackTrace();
1113 
-
1114 
-                if (view.getOnItemLongClickListener() != null) {
1115 
-                    handled = view.getOnItemLongClickListener().onItemLongClick(view, SwipeLayout.this, p, vId);
1116 
-                }
1117 
-                if (handled) {
1118 
-                    view.performHapticFeedback(HapticFeedbackConstants.LONG_PRESS);
1119 
-                }
1120 
-            }
1121 
-            return handled;
1122 
-        }
1123 
-        return false;
1124 
-    }
1125 
-
1126 
-    @Override
1127 
-    protected void onAttachedToWindow() {
1128 
-        super.onAttachedToWindow();
1129 
-        if (insideAdapterView()) {
1130 
-            if (clickListener == null) {
1131 
-                setOnClickListener(new OnClickListener() {
1132 
-                    @Override
1133 
-                    public void onClick(View v) {
1134 
-                        performAdapterViewItemClick();
1135 
-                    }
1136 
-                });
1137 
-            }
1138 
-            if (longClickListener == null) {
1139 
-                setOnLongClickListener(new OnLongClickListener() {
1140 
-                    @Override
1141 
-                    public boolean onLongClick(View v) {
1142 
-                        performAdapterViewItemLongClick();
1143 
-                        return true;
1144 
-                    }
1145 
-                });
1146 
-            }
1147 
-        }
1148 
-    }
1149 
-
1150 
-    OnClickListener clickListener;
1151 
-
1152 
-    @Override
1153 
-    public void setOnClickListener(OnClickListener l) {
1154 
-        super.setOnClickListener(l);
1155 
-        clickListener = l;
1156 
-    }
1157 
-
1158 
-    OnLongClickListener longClickListener;
1159 
-
1160 
-    @Override
1161 
-    public void setOnLongClickListener(OnLongClickListener l) {
1162 
-        super.setOnLongClickListener(l);
1163 
-        longClickListener = l;
1164 
-    }
1165 
-
1166 
-    private Rect hitSurfaceRect;
1167 
-
1168 
-    private boolean isTouchOnSurface(MotionEvent ev) {
1169 
-        View surfaceView = getSurfaceView();
1170 
-        if (surfaceView == null) {
1171 
-            return false;
1172 
-        }
1173 
-        if (hitSurfaceRect == null) {
1174 
-            hitSurfaceRect = new Rect();
1175 
-        }
1176 
-        surfaceView.getHitRect(hitSurfaceRect);
1177 
-        return hitSurfaceRect.contains((int) ev.getX(), (int) ev.getY());
1178 
-    }
1179 
-
1180 
-    private GestureDetector gestureDetector = new GestureDetector(getContext(), new SwipeDetector());
1181 
-
1182 
-    class SwipeDetector extends GestureDetector.SimpleOnGestureListener {
1183 
-        @Override
1184 
-        public boolean onSingleTapUp(MotionEvent e) {
1185 
-            if (mClickToClose && isTouchOnSurface(e)) {
1186 
-                close();
1187 
-            }
1188 
-            return super.onSingleTapUp(e);
1189 
-        }
1190 
-
1191 
-        @Override
1192 
-        public boolean onDoubleTap(MotionEvent e) {
1193 
-            if (mDoubleClickListener != null) {
1194 
-                View target;
1195 
-                View bottom = getCurrentBottomView();
1196 
-                View surface = getSurfaceView();
1197 
-                if (bottom != null && e.getX() > bottom.getLeft() && e.getX() < bottom.getRight()
1198 
-                        && e.getY() > bottom.getTop() && e.getY() < bottom.getBottom()) {
1199 
-                    target = bottom;
1200 
-                } else {
1201 
-                    target = surface;
1202 
-                }
1203 
-                mDoubleClickListener.onDoubleClick(SwipeLayout.this, target == surface);
1204 
-            }
1205 
-            return true;
1206 
-        }
1207 
-    }
1208 
-
1209 
-    /**
1210 
-     * set the drag distance, it will force set the bottom view's width or
1211 
-     * height via this value.
1212 
-     *
1213 
-     * @param max max distance in dp unit
1214 
-     */
1215 
-    public void setDragDistance(int max) {
1216 
-        if (max < 0) max = 0;
1217 
-        mDragDistance = dp2px(max);
1218 
-        requestLayout();
1219 
-    }
1220 
-
1221 
-    /**
1222 
-     * There are 2 diffirent show mode.
1223 
-     *
1224 
-     * @param mode
1225 
-     */
1226 
-    public void setShowMode(ShowMode mode) {
1227 
-        mShowMode = mode;
1228 
-        requestLayout();
1229 
-    }
1230 
-
1231 
-    public DragEdge getDragEdge() {
1232 
-        return mCurrentDragEdge;
1233 
-    }
1234 
-
1235 
-    public int getDragDistance() {
1236 
-        return mDragDistance;
1237 
-    }
1238 
-
1239 
-    public ShowMode getShowMode() {
1240 
-        return mShowMode;
1241 
-    }
1242 
-
1243 
-    /**
1244 
-     * return null if there is no surface view(no children)
1245 
-     */
1246 
-    public View getSurfaceView() {
1247 
-        if (getChildCount() == 0) return null;
1248 
-        return getChildAt(getChildCount() - 1);
1249 
-    }
1250 
-
1251 
-    /**
1252 
-     * return null if there is no bottom view
1253 
-     */
1254 
-    @Nullable
1255 
-    public View getCurrentBottomView() {
1256 
-        List<View> bottoms = getBottomViews();
1257 
-        if (mCurrentDragEdge.ordinal() < bottoms.size()) {
1258 
-            return bottoms.get(mCurrentDragEdge.ordinal());
1259 
-        }
1260 
-        return null;
1261 
-    }
1262 
-
1263 
-    /**
1264 
-     * @return all bottomViews: left, top, right, bottom (may null if the edge is not set)
1265 
-     */
1266 
-    public List<View> getBottomViews() {
1267 
-        ArrayList<View> bottoms = new ArrayList<View>();
1268 
-        for (DragEdge dragEdge : DragEdge.values()) {
1269 
-            bottoms.add(mDragEdges.get(dragEdge));
1270 
-        }
1271 
-        return bottoms;
1272 
-    }
1273 
-
1274 
-    public enum Status {
1275 
-        Middle,
1276 
-        Open,
1277 
-        Close
1278 
-    }
1279 
-
1280 
-    /**
1281 
-     * get the open status.
1282 
-     *
1283 
-     */
1284 
-    public Status getOpenStatus() {
1285 
-        View surfaceView = getSurfaceView();
1286 
-        if (surfaceView == null) {
1287 
-            return Status.Close;
1288 
-        }
1289 
-        int surfaceLeft = surfaceView.getLeft();
1290 
-        int surfaceTop = surfaceView.getTop();
1291 
-        if (surfaceLeft == getPaddingLeft() && surfaceTop == getPaddingTop()) return Status.Close;
1292 
-
1293 
-        if (surfaceLeft == (getPaddingLeft() - mDragDistance) || surfaceLeft == (getPaddingLeft() + mDragDistance)
1294 
-                || surfaceTop == (getPaddingTop() - mDragDistance) || surfaceTop == (getPaddingTop() + mDragDistance))
1295 
-            return Status.Open;
1296 
-
1297 
-        return Status.Middle;
1298 
-    }
1299 
-
1300 
-
1301 
-    /**
1302 
-     * Process the surface release event.
1303 
-     *
1304 
-     * @param xvel                 xVelocity
1305 
-     * @param yvel                 yVelocity
1306 
-     * @param isCloseBeforeDragged the open state before drag
1307 
-     */
1308 
-    protected void processHandRelease(float xvel, float yvel, boolean isCloseBeforeDragged) {
1309 
-        float minVelocity = mDragHelper.getMinVelocity();
1310 
-        View surfaceView = getSurfaceView();
1311 
-        DragEdge currentDragEdge = mCurrentDragEdge;
1312 
-        if (currentDragEdge == null || surfaceView == null) {
1313 
-            return;
1314 
-        }
1315 
-        float willOpenPercent = (isCloseBeforeDragged ? mWillOpenPercentAfterClose : mWillOpenPercentAfterOpen);
1316 
-        if (currentDragEdge == DragEdge.Left) {
1317 
-            if (xvel > minVelocity) open();
1318 
-            else if (xvel < -minVelocity) close();
1319 
-            else {
1320 
-                float openPercent = 1f * getSurfaceView().getLeft() / mDragDistance;
1321 
-                if (openPercent > willOpenPercent) open();
1322 
-                else close();
1323 
-            }
1324 
-        } else if (currentDragEdge == DragEdge.Right) {
1325 
-            if (xvel > minVelocity) close();
1326 
-            else if (xvel < -minVelocity) open();
1327 
-            else {
1328 
-                float openPercent = 1f * (-getSurfaceView().getLeft()) / mDragDistance;
1329 
-                if (openPercent > willOpenPercent) open();
1330 
-                else close();
1331 
-            }
1332 
-        } else if (currentDragEdge == DragEdge.Top) {
1333 
-            if (yvel > minVelocity) open();
1334 
-            else if (yvel < -minVelocity) close();
1335 
-            else {
1336 
-                float openPercent = 1f * getSurfaceView().getTop() / mDragDistance;
1337 
-                if (openPercent > willOpenPercent) open();
1338 
-                else close();
1339 
-            }
1340 
-        } else if (currentDragEdge == DragEdge.Bottom) {
1341 
-            if (yvel > minVelocity) close();
1342 
-            else if (yvel < -minVelocity) open();
1343 
-            else {
1344 
-                float openPercent = 1f * (-getSurfaceView().getTop()) / mDragDistance;
1345 
-                if (openPercent > willOpenPercent) open();
1346 
-                else close();
1347 
-            }
1348 
-        }
1349 
-    }
1350 
-
1351 
-    /**
1352 
-     * smoothly open surface.
1353 
-     */
1354 
-    public void open() {
1355 
-        open(true, true);
1356 
-    }
1357 
-
1358 
-    public void open(boolean smooth) {
1359 
-        open(smooth, true);
1360 
-    }
1361 
-
1362 
-    public void open(boolean smooth, boolean notify) {
1363 
-        View surface = getSurfaceView(), bottom = getCurrentBottomView();
1364 
-        if (surface == null) {
1365 
-            return;
1366 
-        }
1367 
-        int dx, dy;
1368 
-        Rect rect = computeSurfaceLayoutArea(true);
1369 
-        if (smooth) {
1370 
-            mDragHelper.smoothSlideViewTo(surface, rect.left, rect.top);
1371 
-        } else {
1372 
-            dx = rect.left - surface.getLeft();
1373 
-            dy = rect.top - surface.getTop();
1374 
-            surface.layout(rect.left, rect.top, rect.right, rect.bottom);
1375 
-            if (getShowMode() == ShowMode.PullOut) {
1376 
-                Rect bRect = computeBottomLayoutAreaViaSurface(ShowMode.PullOut, rect);
1377 
-                if (bottom != null) {
1378 
-                    bottom.layout(bRect.left, bRect.top, bRect.right, bRect.bottom);
1379 
-                }
1380 
-            }
1381 
-            if (notify) {
1382 
-                dispatchRevealEvent(rect.left, rect.top, rect.right, rect.bottom);
1383 
-                dispatchSwipeEvent(rect.left, rect.top, dx, dy);
1384 
-            } else {
1385 
-                safeBottomView();
1386 
-            }
1387 
-        }
1388 
-        invalidate();
1389 
-    }
1390 
-
1391 
-    public void open(DragEdge edge) {
1392 
-        setCurrentDragEdge(edge);
1393 
-        open(true, true);
1394 
-    }
1395 
-
1396 
-    public void open(boolean smooth, DragEdge edge) {
1397 
-        setCurrentDragEdge(edge);
1398 
-        open(smooth, true);
1399 
-    }
1400 
-
1401 
-    public void open(boolean smooth, boolean notify, DragEdge edge) {
1402 
-        setCurrentDragEdge(edge);
1403 
-        open(smooth, notify);
1404 
-    }
1405 
-
1406 
-    /**
1407 
-     * smoothly close surface.
1408 
-     */
1409 
-    public void close() {
1410 
-        close(true, true);
1411 
-    }
1412 
-
1413 
-    public void close(boolean smooth) {
1414 
-        close(smooth, true);
1415 
-    }
1416 
-
1417 
-    /**
1418 
-     * close surface
1419 
-     *
1420 
-     * @param smooth smoothly or not.
1421 
-     * @param notify if notify all the listeners.
1422 
-     */
1423 
-    public void close(boolean smooth, boolean notify) {
1424 
-        View surface = getSurfaceView();
1425 
-        if (surface == null) {
1426 
-            return;
1427 
-        }
1428 
-        int dx, dy;
1429 
-        if (smooth)
1430 
-            mDragHelper.smoothSlideViewTo(getSurfaceView(), getPaddingLeft(), getPaddingTop());
1431 
-        else {
1432 
-            Rect rect = computeSurfaceLayoutArea(false);
1433 
-            dx = rect.left - surface.getLeft();
1434 
-            dy = rect.top - surface.getTop();
1435 
-            surface.layout(rect.left, rect.top, rect.right, rect.bottom);
1436 
-            if (notify) {
1437 
-                dispatchRevealEvent(rect.left, rect.top, rect.right, rect.bottom);
1438 
-                dispatchSwipeEvent(rect.left, rect.top, dx, dy);
1439 
-            } else {
1440 
-                safeBottomView();
1441 
-            }
1442 
-        }
1443 
-        invalidate();
1444 
-    }
1445 
-
1446 
-    public void toggle() {
1447 
-        toggle(true);
1448 
-    }
1449 
-
1450 
-    public void toggle(boolean smooth) {
1451 
-        if (getOpenStatus() == Status.Open)
1452 
-            close(smooth);
1453 
-        else if (getOpenStatus() == Status.Close) open(smooth);
1454 
-    }
1455 
-
1456 
-
1457 
-    /**
1458 
-     * a helper function to compute the Rect area that surface will hold in.
1459 
-     *
1460 
-     * @param open open status or close status.
1461 
-     */
1462 
-    private Rect computeSurfaceLayoutArea(boolean open) {
1463 
-        int l = getPaddingLeft(), t = getPaddingTop();
1464 
-        if (open) {
1465 
-            if (mCurrentDragEdge == DragEdge.Left)
1466 
-                l = getPaddingLeft() + mDragDistance;
1467 
-            else if (mCurrentDragEdge == DragEdge.Right)
1468 
-                l = getPaddingLeft() - mDragDistance;
1469 
-            else if (mCurrentDragEdge == DragEdge.Top)
1470 
-                t = getPaddingTop() + mDragDistance;
1471 
-            else t = getPaddingTop() - mDragDistance;
1472 
-        }
1473 
-        return new Rect(l, t, l + getMeasuredWidth(), t + getMeasuredHeight());
1474 
-    }
1475 
-
1476 
-    private Rect computeBottomLayoutAreaViaSurface(ShowMode mode, Rect surfaceArea) {
1477 
-        Rect rect = surfaceArea;
1478 
-        View bottomView = getCurrentBottomView();
1479 
-
1480 
-        int bl = rect.left, bt = rect.top, br = rect.right, bb = rect.bottom;
1481 
-        if (mode == ShowMode.PullOut) {
1482 
-            if (mCurrentDragEdge == DragEdge.Left)
1483 
-                bl = rect.left - mDragDistance;
1484 
-            else if (mCurrentDragEdge == DragEdge.Right)
1485 
-                bl = rect.right;
1486 
-            else if (mCurrentDragEdge == DragEdge.Top)
1487 
-                bt = rect.top - mDragDistance;
1488 
-            else bt = rect.bottom;
1489 
-
1490 
-            if (mCurrentDragEdge == DragEdge.Left || mCurrentDragEdge == DragEdge.Right) {
1491 
-                bb = rect.bottom;
1492 
-                br = bl + (bottomView == null ? 0 : bottomView.getMeasuredWidth());
1493 
-            } else {
1494 
-                bb = bt + (bottomView == null ? 0 : bottomView.getMeasuredHeight());
1495 
-                br = rect.right;
1496 
-            }
1497 
-        } else if (mode == ShowMode.LayDown) {
1498 
-            if (mCurrentDragEdge == DragEdge.Left)
1499 
-                br = bl + mDragDistance;
1500 
-            else if (mCurrentDragEdge == DragEdge.Right)
1501 
-                bl = br - mDragDistance;
1502 
-            else if (mCurrentDragEdge == DragEdge.Top)
1503 
-                bb = bt + mDragDistance;
1504 
-            else bt = bb - mDragDistance;
1505 
-
1506 
-        }
1507 
-        return new Rect(bl, bt, br, bb);
1508 
-
1509 
-    }
1510 
-
1511 
-    private Rect computeBottomLayDown(DragEdge dragEdge) {
1512 
-        int bl = getPaddingLeft(), bt = getPaddingTop();
1513 
-        int br, bb;
1514 
-        if (dragEdge == DragEdge.Right) {
1515 
-            bl = getMeasuredWidth() - mDragDistance;
1516 
-        } else if (dragEdge == DragEdge.Bottom) {
1517 
-            bt = getMeasuredHeight() - mDragDistance;
1518 
-        }
1519 
-        if (dragEdge == DragEdge.Left || dragEdge == DragEdge.Right) {
1520 
-            br = bl + mDragDistance;
1521 
-            bb = bt + getMeasuredHeight();
1522 
-        } else {
1523 
-            br = bl + getMeasuredWidth();
1524 
-            bb = bt + mDragDistance;
1525 
-        }
1526 
-        return new Rect(bl, bt, br, bb);
1527 
-    }
1528 
-
1529 
-    public void setOnDoubleClickListener(DoubleClickListener doubleClickListener) {
1530 
-        mDoubleClickListener = doubleClickListener;
1531 
-    }
1532 
-
1533 
-    public interface DoubleClickListener {
1534 
-        void onDoubleClick(SwipeLayout layout, boolean surface);
1535 
-    }
1536 
-
1537 
-    private int dp2px(float dp) {
1538 
-        return (int) (dp * getContext().getResources().getDisplayMetrics().density + 0.5f);
1539 
-    }
1540 
-
1541 
-
1542 
-    /**
1543 
-     * Deprecated, use {@link #setDrag(DragEdge, View)}
1544 
-     */
1545 
-    @Deprecated
1546 
-    public void setDragEdge(DragEdge dragEdge) {
1547 
-        clearDragEdge();
1548 
-        if (getChildCount() >= 2) {
1549 
-            mDragEdges.put(dragEdge, getChildAt(getChildCount() - 2));
1550 
-        }
1551 
-        setCurrentDragEdge(dragEdge);
1552 
-    }
1553 
-
1554 
-    public void onViewRemoved(View child) {
1555 
-        for (Map.Entry<DragEdge, View> entry : new HashMap<DragEdge, View>(mDragEdges).entrySet()) {
1556 
-            if (entry.getValue() == child) {
1557 
-                mDragEdges.remove(entry.getKey());
1558 
-            }
1559 
-        }
1560 
-    }
1561 
-
1562 
-    public Map<DragEdge, View> getDragEdgeMap() {
1563 
-        return mDragEdges;
1564 
-    }
1565 
-
1566 
-    /**
1567 
-     * Deprecated, use {@link #getDragEdgeMap()}
1568 
-     */
1569 
-    @Deprecated
1570 
-    public List<DragEdge> getDragEdges() {
1571 
-        return new ArrayList<DragEdge>(mDragEdges.keySet());
1572 
-    }
1573 
-
1574 
-    /**
1575 
-     * Deprecated, use {@link #setDrag(DragEdge, View)}
1576 
-     */
1577 
-    @Deprecated
1578 
-    public void setDragEdges(List<DragEdge> dragEdges) {
1579 
-        clearDragEdge();
1580 
-        for (int i = 0, size = Math.min(dragEdges.size(), getChildCount() - 1); i < size; i++) {
1581 
-            DragEdge dragEdge = dragEdges.get(i);
1582 
-            mDragEdges.put(dragEdge, getChildAt(i));
1583 
-        }
1584 
-        if (dragEdges.size() == 0 || dragEdges.contains(DefaultDragEdge)) {
1585 
-            setCurrentDragEdge(DefaultDragEdge);
1586 
-        } else {
1587 
-            setCurrentDragEdge(dragEdges.get(0));
1588 
-        }
1589 
-    }
1590 
-
1591 
-    /**
1592 
-     * Deprecated, use {@link #addDrag(DragEdge, View)}
1593 
-     */
1594 
-    @Deprecated
1595 
-    public void setDragEdges(DragEdge... mDragEdges) {
1596 
-        clearDragEdge();
1597 
-        setDragEdges(Arrays.asList(mDragEdges));
1598 
-    }
1599 
-
1600 
-    /**
1601 
-     * Deprecated, use {@link #addDrag(DragEdge, View)}
1602 
-     * When using multiple drag edges it's a good idea to pass the ids of the views that
1603 
-     * you're using for the left, right, top bottom views (-1 if you're not using a particular view)
1604 
-     */
1605 
-    @Deprecated
1606 
-    public void setBottomViewIds(int leftId, int rightId, int topId, int bottomId) {
1607 
-        addDrag(DragEdge.Left, findViewById(leftId));
1608 
-        addDrag(DragEdge.Right, findViewById(rightId));
1609 
-        addDrag(DragEdge.Top, findViewById(topId));
1610 
-        addDrag(DragEdge.Bottom, findViewById(bottomId));
1611 
-    }
1612 
-
1613 
-    private float getCurrentOffset() {
1614 
-        if (mCurrentDragEdge == null) return 0;
1615 
-        return mEdgeSwipesOffset[mCurrentDragEdge.ordinal()];
1616 
-    }
1617 
-
1618 
-    private void setCurrentDragEdge(DragEdge dragEdge) {
1619 
-        mCurrentDragEdge = dragEdge;
1620 
-        updateBottomViews();
1621 
-    }
1622 
-
1623 
-    private void updateBottomViews() {
1624 
-        View currentBottomView = getCurrentBottomView();
1625 
-        if (currentBottomView != null) {
1626 
-            if (mCurrentDragEdge == DragEdge.Left || mCurrentDragEdge == DragEdge.Right) {
1627 
-                mDragDistance = currentBottomView.getMeasuredWidth() - dp2px(getCurrentOffset());
1628 
-            } else {
1629 
-                mDragDistance = currentBottomView.getMeasuredHeight() - dp2px(getCurrentOffset());
1630 
-            }
1631 
-        }
1632 
-
1633 
-        if (mShowMode == ShowMode.PullOut) {
1634 
-            layoutPullOut();
1635 
-        } else if (mShowMode == ShowMode.LayDown) {
1636 
-            layoutLayDown();
1637 
-        }
1638 
-
1639 
-        safeBottomView();
1640 
-    }
1641 
-}

+ 19 - 0
views/src/main/java/com/android/views/swipebacklayout/SwipeBackActivityBase.java
查看文件 

@@ -0,0 +1,19 @@
1 
+package com.android.views.swipebacklayout;
2 
+
3 
+/**
4 
+ * @author Yrom
5 
+ */
6 
+public interface SwipeBackActivityBase {
7 
+    /**
8 
+     * @return the SwipeBackLayout associated with this activity.
9 
+     */
10 
+    public abstract SwipeBackLayout getSwipeBackLayout();
11 
+
12 
+    public abstract void setSwipeBackEnable(boolean enable);
13 
+
14 
+    /**
15 
+     * Scroll out contentView and finish the activity
16 
+     */
17 
+    public abstract void scrollToFinishActivity();
18 
+
19 
+}

+ 60 - 0
views/src/main/java/com/android/views/swipebacklayout/SwipeBackActivityHelper.java
查看文件 

@@ -0,0 +1,60 @@
1 
+package com.android.views.swipebacklayout;
2 
+
3 
+import android.app.Activity;
4 
+import android.graphics.Color;
5 
+import android.graphics.drawable.ColorDrawable;
6 
+import android.view.LayoutInflater;
7 
+import android.view.View;
8 
+
9 
+import com.android.views.R;
10 
+
11 
+/**
12 
+ * @author Yrom
13 
+ */
14 
+public class SwipeBackActivityHelper {
15 
+    private Activity mActivity;
16 
+
17 
+    private SwipeBackLayout mSwipeBackLayout;
18 
+
19 
+    public SwipeBackActivityHelper(Activity activity) {
20 
+        mActivity = activity;
21 
+    }
22 
+
23 
+    @SuppressWarnings("deprecation")
24 
+    public void onActivityCreate() {
25 
+        mActivity.getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
26 
+        mActivity.getWindow().getDecorView().setBackgroundDrawable(null);
27 
+        mSwipeBackLayout = (SwipeBackLayout) LayoutInflater.from(mActivity).inflate(
28 
+                R.layout.swipeback_layout, null);
29 
+        mSwipeBackLayout.addSwipeListener(new SwipeBackLayout.SwipeListener() {
30 
+            @Override
31 
+            public void onScrollStateChange(int state, float scrollPercent) {
32 
+            }
33 
+
34 
+            @Override
35 
+            public void onEdgeTouch(int edgeFlag) {
36 
+                Utils.convertActivityToTranslucent(mActivity);
37 
+            }
38 
+
39 
+            @Override
40 
+            public void onScrollOverThreshold() {
41 
+
42 
+            }
43 
+        });
44 
+    }
45 
+
46 
+    public void onPostCreate() {
47 
+        mSwipeBackLayout.attachToActivity(mActivity);
48 
+    }
49 
+
50 
+    public View findViewById(int id) {
51 
+        if (mSwipeBackLayout != null) {
52 
+            return mSwipeBackLayout.findViewById(id);
53 
+        }
54 
+        return null;
55 
+    }
56 
+
57 
+    public SwipeBackLayout getSwipeBackLayout() {
58 
+        return mSwipeBackLayout;
59 
+    }
60 
+}

+ 606 - 0
views/src/main/java/com/android/views/swipebacklayout/SwipeBackLayout.java
查看文件 

@@ -0,0 +1,606 @@
1 
+package com.android.views.swipebacklayout;
2 
+
3 
+import android.app.Activity;
4 
+import android.content.Context;
5 
+import android.content.res.TypedArray;
6 
+import android.graphics.Canvas;
7 
+import android.graphics.Rect;
8 
+import android.graphics.drawable.Drawable;
9 
+import android.support.v4.view.ViewCompat;
10 
+import android.util.AttributeSet;
11 
+import android.view.MotionEvent;
12 
+import android.view.View;
13 
+import android.view.ViewGroup;
14 
+import android.widget.FrameLayout;
15 
+
16 
+import com.android.views.R;
17 
+
18 
+import java.util.ArrayList;
19 
+import java.util.List;
20 
+
21 
+
22 
+public class SwipeBackLayout extends FrameLayout {
23 
+    /**
24 
+     * Minimum velocity that will be detected as a fling
25 
+     */
26 
+    private static final int MIN_FLING_VELOCITY = 400; // dips per second
27 
+
28 
+    private static final int DEFAULT_SCRIM_COLOR = 0x99000000;
29 
+
30 
+    private static final int FULL_ALPHA = 255;
31 
+
32 
+    /**
33 
+     * Edge flag indicating that the left edge should be affected.
34 
+     */
35 
+    public static final int EDGE_LEFT = ViewDragHelper.EDGE_LEFT;
36 
+
37 
+    /**
38 
+     * Edge flag indicating that the right edge should be affected.
39 
+     */
40 
+    public static final int EDGE_RIGHT = ViewDragHelper.EDGE_RIGHT;
41 
+
42 
+    /**
43 
+     * Edge flag indicating that the bottom edge should be affected.
44 
+     */
45 
+    public static final int EDGE_BOTTOM = ViewDragHelper.EDGE_BOTTOM;
46 
+
47 
+    /**
48 
+     * Edge flag set indicating all edges should be affected.
49 
+     */
50 
+    public static final int EDGE_ALL = EDGE_LEFT | EDGE_RIGHT | EDGE_BOTTOM;
51 
+
52 
+    /**
53 
+     * A view is not currently being dragged or animating as a result of a
54 
+     * fling/snap.
55 
+     */
56 
+    public static final int STATE_IDLE = ViewDragHelper.STATE_IDLE;
57 
+
58 
+    /**
59 
+     * A view is currently being dragged. The position is currently changing as
60 
+     * a result of user input or simulated user input.
61 
+     */
62 
+    public static final int STATE_DRAGGING = ViewDragHelper.STATE_DRAGGING;
63 
+
64 
+    /**
65 
+     * A view is currently settling into place as a result of a fling or
66 
+     * predefined non-interactive motion.
67 
+     */
68 
+    public static final int STATE_SETTLING = ViewDragHelper.STATE_SETTLING;
69 
+
70 
+    /**
71 
+     * Default threshold of scroll
72 
+     */
73 
+    private static final float DEFAULT_SCROLL_THRESHOLD = 0.3f;
74 
+
75 
+    private static final int OVERSCROLL_DISTANCE = 10;
76 
+
77 
+    private static final int[] EDGE_FLAGS = {
78 
+            EDGE_LEFT, EDGE_RIGHT, EDGE_BOTTOM, EDGE_ALL
79 
+    };
80 
+
81 
+    private int mEdgeFlag;
82 
+
83 
+    /**
84 
+     * Threshold of scroll, we will close the activity, when scrollPercent over
85 
+     * this value;
86 
+     */
87 
+    private float mScrollThreshold = DEFAULT_SCROLL_THRESHOLD;
88 
+
89 
+    private Activity mActivity;
90 
+
91 
+    private boolean mEnable = true;
92 
+
93 
+    private View mContentView;
94 
+
95 
+    private ViewDragHelper mDragHelper;
96 
+
97 
+    private float mScrollPercent;
98 
+
99 
+    private int mContentLeft;
100 
+
101 
+    private int mContentTop;
102 
+
103 
+    /**
104 
+     * The set of listeners to be sent events through.
105 
+     */
106 
+    private List<SwipeListener> mListeners;
107 
+
108 
+    private Drawable mShadowLeft;
109 
+
110 
+    private Drawable mShadowRight;
111 
+
112 
+    private Drawable mShadowBottom;
113 
+
114 
+    private float mScrimOpacity;
115 
+
116 
+    private int mScrimColor = DEFAULT_SCRIM_COLOR;
117 
+
118 
+    private boolean mInLayout;
119 
+
120 
+    private Rect mTmpRect = new Rect();
121 
+
122 
+    /**
123 
+     * Edge being dragged
124 
+     */
125 
+    private int mTrackingEdge;
126 
+
127 
+    public SwipeBackLayout(Context context) {
128 
+        this(context, null);
129 
+    }
130 
+
131 
+    public SwipeBackLayout(Context context, AttributeSet attrs) {
132 
+        this(context, attrs, R.attr.SwipeBackLayoutStyle);
133 
+    }
134 
+
135 
+    public SwipeBackLayout(Context context, AttributeSet attrs, int defStyle) {
136 
+        super(context, attrs);
137 
+        mDragHelper = ViewDragHelper.create(this, new ViewDragCallback());
138 
+
139 
+        TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.SwipeBackLayout, defStyle,
140 
+                R.style.SwipeBackLayout);
141 
+
142 
+        int edgeSize = a.getDimensionPixelSize(R.styleable.SwipeBackLayout_edge_size, -1);
143 
+        if (edgeSize > 0)
144 
+            setEdgeSize(edgeSize);
145 
+        int mode = EDGE_FLAGS[a.getInt(R.styleable.SwipeBackLayout_edge_flag, 0)];
146 
+        setEdgeTrackingEnabled(mode);
147 
+
148 
+        int shadowLeft = a.getResourceId(R.styleable.SwipeBackLayout_shadow_left,
149 
+                R.drawable.shadow_left);
150 
+        int shadowRight = a.getResourceId(R.styleable.SwipeBackLayout_shadow_right,
151 
+                R.drawable.shadow_right);
152 
+        int shadowBottom = a.getResourceId(R.styleable.SwipeBackLayout_shadow_bottom,
153 
+                R.drawable.shadow_bottom);
154 
+        setShadow(shadowLeft, EDGE_LEFT);
155 
+        setShadow(shadowRight, EDGE_RIGHT);
156 
+        setShadow(shadowBottom, EDGE_BOTTOM);
157 
+        a.recycle();
158 
+        final float density = getResources().getDisplayMetrics().density;
159 
+        final float minVel = MIN_FLING_VELOCITY * density;
160 
+        mDragHelper.setMinVelocity(minVel);
161 
+        mDragHelper.setMaxVelocity(minVel * 2f);
162 
+    }
163 
+
164 
+    /**
165 
+     * Sets the sensitivity of the NavigationLayout.
166 
+     *
167 
+     * @param context     The application context.
168 
+     * @param sensitivity value between 0 and 1, the final value for touchSlop =
169 
+     *                    ViewConfiguration.getScaledTouchSlop * (1 / s);
170 
+     */
171 
+    public void setSensitivity(Context context, float sensitivity) {
172 
+        mDragHelper.setSensitivity(context, sensitivity);
173 
+    }
174 
+
175 
+    /**
176 
+     * Set up contentView which will be moved by user gesture
177 
+     *
178 
+     * @param view
179 
+     */
180 
+    private void setContentView(View view) {
181 
+        mContentView = view;
182 
+    }
183 
+
184 
+    public void setEnableGesture(boolean enable) {
185 
+        mEnable = enable;
186 
+    }
187 
+
188 
+    /**
189 
+     * Enable edge tracking for the selected edges of the parent view. The
190 
+     * callback's
191 
+     *
192 
+     * @param edgeFlags Combination of edge flags describing the edges to watch
193 
+     * @see #EDGE_LEFT
194 
+     * @see #EDGE_RIGHT
195 
+     * @see #EDGE_BOTTOM
196 
+     */
197 
+    public void setEdgeTrackingEnabled(int edgeFlags) {
198 
+        mEdgeFlag = edgeFlags;
199 
+        mDragHelper.setEdgeTrackingEnabled(mEdgeFlag);
200 
+    }
201 
+
202 
+    /**
203 
+     * Set a color to use for the scrim that obscures primary content while a
204 
+     * drawer is open.
205 
+     *
206 
+     * @param color Color to use in 0xAARRGGBB format.
207 
+     */
208 
+    public void setScrimColor(int color) {
209 
+        mScrimColor = color;
210 
+        invalidate();
211 
+    }
212 
+
213 
+    /**
214 
+     * Set the size of an edge. This is the range in pixels along the edges of
215 
+     * this view that will actively detect edge touches or drags if edge
216 
+     * tracking is enabled.
217 
+     *
218 
+     * @param size The size of an edge in pixels
219 
+     */
220 
+    public void setEdgeSize(int size) {
221 
+        mDragHelper.setEdgeSize(size);
222 
+    }
223 
+
224 
+    /**
225 
+     * Register a callback to be invoked when a swipe event is sent to this
226 
+     * view.
227 
+     *
228 
+     * @param listener the swipe listener to attach to this view
229 
+     * @deprecated use {@link #addSwipeListener} instead
230 
+     */
231 
+    @Deprecated
232 
+    public void setSwipeListener(SwipeListener listener) {
233 
+        addSwipeListener(listener);
234 
+    }
235 
+
236 
+    /**
237 
+     * Add a callback to be invoked when a swipe event is sent to this view.
238 
+     *
239 
+     * @param listener the swipe listener to attach to this view
240 
+     */
241 
+    public void addSwipeListener(SwipeListener listener) {
242 
+        if (mListeners == null) {
243 
+            mListeners = new ArrayList<SwipeListener>();
244 
+        }
245 
+        mListeners.add(listener);
246 
+    }
247 
+
248 
+    /**
249 
+     * Removes a listener from the set of listeners
250 
+     *
251 
+     * @param listener
252 
+     */
253 
+    public void removeSwipeListener(SwipeListener listener) {
254 
+        if (mListeners == null) {
255 
+            return;
256 
+        }
257 
+        mListeners.remove(listener);
258 
+    }
259 
+
260 
+    public static interface SwipeListener {
261 
+        /**
262 
+         * Invoke when state change
263 
+         *
264 
+         * @param state         flag to describe scroll state
265 
+         * @param scrollPercent scroll percent of this view
266 
+         * @see #STATE_IDLE
267 
+         * @see #STATE_DRAGGING
268 
+         * @see #STATE_SETTLING
269 
+         */
270 
+        public void onScrollStateChange(int state, float scrollPercent);
271 
+
272 
+        /**
273 
+         * Invoke when edge touched
274 
+         *
275 
+         * @param edgeFlag edge flag describing the edge being touched
276 
+         * @see #EDGE_LEFT
277 
+         * @see #EDGE_RIGHT
278 
+         * @see #EDGE_BOTTOM
279 
+         */
280 
+        public void onEdgeTouch(int edgeFlag);
281 
+
282 
+        /**
283 
+         * Invoke when scroll percent over the threshold for the first time
284 
+         */
285 
+        public void onScrollOverThreshold();
286 
+    }
287 
+
288 
+    /**
289 
+     * Set scroll threshold, we will close the activity, when scrollPercent over
290 
+     * this value
291 
+     *
292 
+     * @param threshold
293 
+     */
294 
+    public void setScrollThresHold(float threshold) {
295 
+        if (threshold >= 1.0f || threshold <= 0) {
296 
+            throw new IllegalArgumentException("Threshold value should be between 0 and 1.0");
297 
+        }
298 
+        mScrollThreshold = threshold;
299 
+    }
300 
+
301 
+    /**
302 
+     * Set a drawable used for edge shadow.
303 
+     *
304 
+     * @param shadow    Drawable to use
305 
+     * @param edgeFlag Combination of edge flags describing the edge to set
306 
+     * @see #EDGE_LEFT
307 
+     * @see #EDGE_RIGHT
308 
+     * @see #EDGE_BOTTOM
309 
+     */
310 
+    public void setShadow(Drawable shadow, int edgeFlag) {
311 
+        if ((edgeFlag & EDGE_LEFT) != 0) {
312 
+            mShadowLeft = shadow;
313 
+        } else if ((edgeFlag & EDGE_RIGHT) != 0) {
314 
+            mShadowRight = shadow;
315 
+        } else if ((edgeFlag & EDGE_BOTTOM) != 0) {
316 
+            mShadowBottom = shadow;
317 
+        }
318 
+        invalidate();
319 
+    }
320 
+
321 
+    /**
322 
+     * Set a drawable used for edge shadow.
323 
+     *
324 
+     * @param resId     Resource of drawable to use
325 
+     * @param edgeFlag Combination of edge flags describing the edge to set
326 
+     * @see #EDGE_LEFT
327 
+     * @see #EDGE_RIGHT
328 
+     * @see #EDGE_BOTTOM
329 
+     */
330 
+    public void setShadow(int resId, int edgeFlag) {
331 
+        setShadow(getResources().getDrawable(resId), edgeFlag);
332 
+    }
333 
+
334 
+    /**
335 
+     * Scroll out contentView and finish the activity
336 
+     */
337 
+    public void scrollToFinishActivity() {
338 
+        final int childWidth = mContentView.getWidth();
339 
+        final int childHeight = mContentView.getHeight();
340 
+
341 
+        int left = 0, top = 0;
342 
+        if ((mEdgeFlag & EDGE_LEFT) != 0) {
343 
+            left = childWidth + mShadowLeft.getIntrinsicWidth() + OVERSCROLL_DISTANCE;
344 
+            mTrackingEdge = EDGE_LEFT;
345 
+        } else if ((mEdgeFlag & EDGE_RIGHT) != 0) {
346 
+            left = -childWidth - mShadowRight.getIntrinsicWidth() - OVERSCROLL_DISTANCE;
347 
+            mTrackingEdge = EDGE_RIGHT;
348 
+        } else if ((mEdgeFlag & EDGE_BOTTOM) != 0) {
349 
+            top = -childHeight - mShadowBottom.getIntrinsicHeight() - OVERSCROLL_DISTANCE;
350 
+            mTrackingEdge = EDGE_BOTTOM;
351 
+        }
352 
+
353 
+        mDragHelper.smoothSlideViewTo(mContentView, left, top);
354 
+        invalidate();
355 
+    }
356 
+
357 
+    @Override
358 
+    public boolean onInterceptTouchEvent(MotionEvent event) {
359 
+        if (!mEnable) {
360 
+            return false;
361 
+        }
362 
+        try {
363 
+            return mDragHelper.shouldInterceptTouchEvent(event);
364 
+        } catch (ArrayIndexOutOfBoundsException e) {
365 
+            // FIXME: handle exception
366 
+            // issues #9
367 
+            return false;
368 
+        }
369 
+    }
370 
+
371 
+    @Override
372 
+    public boolean onTouchEvent(MotionEvent event) {
373 
+        if (!mEnable) {
374 
+            return false;
375 
+        }
376 
+        mDragHelper.processTouchEvent(event);
377 
+        return true;
378 
+    }
379 
+
380 
+    @Override
381 
+    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
382 
+        mInLayout = true;
383 
+        if (mContentView != null)
384 
+            mContentView.layout(mContentLeft, mContentTop,
385 
+                    mContentLeft + mContentView.getMeasuredWidth(),
386 
+                    mContentTop + mContentView.getMeasuredHeight());
387 
+        mInLayout = false;
388 
+    }
389 
+
390 
+    @Override
391 
+    public void requestLayout() {
392 
+        if (!mInLayout) {
393 
+            super.requestLayout();
394 
+        }
395 
+    }
396 
+
397 
+    @Override
398 
+    protected boolean drawChild(Canvas canvas, View child, long drawingTime) {
399 
+        final boolean drawContent = child == mContentView;
400 
+
401 
+        boolean ret = super.drawChild(canvas, child, drawingTime);
402 
+        if (mScrimOpacity > 0 && drawContent
403 
+                && mDragHelper.getViewDragState() != ViewDragHelper.STATE_IDLE) {
404 
+            drawShadow(canvas, child);
405 
+            drawScrim(canvas, child);
406 
+        }
407 
+        return ret;
408 
+    }
409 
+
410 
+    private void drawScrim(Canvas canvas, View child) {
411 
+        final int baseAlpha = (mScrimColor & 0xff000000) >>> 24;
412 
+        final int alpha = (int) (baseAlpha * mScrimOpacity);
413 
+        final int color = alpha << 24 | (mScrimColor & 0xffffff);
414 
+
415 
+        if ((mTrackingEdge & EDGE_LEFT) != 0) {
416 
+            canvas.clipRect(0, 0, child.getLeft(), getHeight());
417 
+        } else if ((mTrackingEdge & EDGE_RIGHT) != 0) {
418 
+            canvas.clipRect(child.getRight(), 0, getRight(), getHeight());
419 
+        } else if ((mTrackingEdge & EDGE_BOTTOM) != 0) {
420 
+            canvas.clipRect(child.getLeft(), child.getBottom(), getRight(), getHeight());
421 
+        }
422 
+        canvas.drawColor(color);
423 
+    }
424 
+
425 
+    private void drawShadow(Canvas canvas, View child) {
426 
+        final Rect childRect = mTmpRect;
427 
+        child.getHitRect(childRect);
428 
+
429 
+        if ((mEdgeFlag & EDGE_LEFT) != 0) {
430 
+            mShadowLeft.setBounds(childRect.left - mShadowLeft.getIntrinsicWidth(), childRect.top,
431 
+                    childRect.left, childRect.bottom);
432 
+            mShadowLeft.setAlpha((int) (mScrimOpacity * FULL_ALPHA));
433 
+            mShadowLeft.draw(canvas);
434 
+        }
435 
+
436 
+        if ((mEdgeFlag & EDGE_RIGHT) != 0) {
437 
+            mShadowRight.setBounds(childRect.right, childRect.top,
438 
+                    childRect.right + mShadowRight.getIntrinsicWidth(), childRect.bottom);
439 
+            mShadowRight.setAlpha((int) (mScrimOpacity * FULL_ALPHA));
440 
+            mShadowRight.draw(canvas);
441 
+        }
442 
+
443 
+        if ((mEdgeFlag & EDGE_BOTTOM) != 0) {
444 
+            mShadowBottom.setBounds(childRect.left, childRect.bottom, childRect.right,
445 
+                    childRect.bottom + mShadowBottom.getIntrinsicHeight());
446 
+            mShadowBottom.setAlpha((int) (mScrimOpacity * FULL_ALPHA));
447 
+            mShadowBottom.draw(canvas);
448 
+        }
449 
+    }
450 
+
451 
+    public void attachToActivity(Activity activity) {
452 
+        mActivity = activity;
453 
+        TypedArray a = activity.getTheme().obtainStyledAttributes(new int[]{
454 
+                android.R.attr.windowBackground
455 
+        });
456 
+        int background = a.getResourceId(0, 0);
457 
+        a.recycle();
458 
+
459 
+        ViewGroup decor = (ViewGroup) activity.getWindow().getDecorView();
460 
+        ViewGroup decorChild = (ViewGroup) decor.getChildAt(0);
461 
+        decorChild.setBackgroundResource(background);
462 
+        decor.removeView(decorChild);
463 
+        addView(decorChild);
464 
+        setContentView(decorChild);
465 
+        decor.addView(this);
466 
+    }
467 
+
468 
+    @Override
469 
+    public void computeScroll() {
470 
+        mScrimOpacity = 1 - mScrollPercent;
471 
+        if (mDragHelper.continueSettling(true)) {
472 
+            ViewCompat.postInvalidateOnAnimation(this);
473 
+        }
474 
+    }
475 
+
476 
+    private class ViewDragCallback extends ViewDragHelper.Callback {
477 
+        private boolean mIsScrollOverValid;
478 
+
479 
+        @Override
480 
+        public boolean tryCaptureView(View view, int i) {
481 
+            boolean ret = mDragHelper.isEdgeTouched(mEdgeFlag, i);
482 
+            if (ret) {
483 
+                if (mDragHelper.isEdgeTouched(EDGE_LEFT, i)) {
484 
+                    mTrackingEdge = EDGE_LEFT;
485 
+                } else if (mDragHelper.isEdgeTouched(EDGE_RIGHT, i)) {
486 
+                    mTrackingEdge = EDGE_RIGHT;
487 
+                } else if (mDragHelper.isEdgeTouched(EDGE_BOTTOM, i)) {
488 
+                    mTrackingEdge = EDGE_BOTTOM;
489 
+                }
490 
+                if (mListeners != null && !mListeners.isEmpty()) {
491 
+                    for (SwipeListener listener : mListeners) {
492 
+                        listener.onEdgeTouch(mTrackingEdge);
493 
+                    }
494 
+                }
495 
+                mIsScrollOverValid = true;
496 
+            }
497 
+            boolean directionCheck = false;
498 
+            if (mEdgeFlag == EDGE_LEFT || mEdgeFlag == EDGE_RIGHT) {
499 
+                directionCheck = !mDragHelper.checkTouchSlop(ViewDragHelper.DIRECTION_VERTICAL, i);
500 
+            } else if (mEdgeFlag == EDGE_BOTTOM) {
501 
+                directionCheck = !mDragHelper
502 
+                        .checkTouchSlop(ViewDragHelper.DIRECTION_HORIZONTAL, i);
503 
+            } else if (mEdgeFlag == EDGE_ALL) {
504 
+                directionCheck = true;
505 
+            }
506 
+            return ret & directionCheck;
507 
+        }
508 
+
509 
+        @Override
510 
+        public int getViewHorizontalDragRange(View child) {
511 
+            return mEdgeFlag & (EDGE_LEFT | EDGE_RIGHT);
512 
+        }
513 
+
514 
+        @Override
515 
+        public int getViewVerticalDragRange(View child) {
516 
+            return mEdgeFlag & EDGE_BOTTOM;
517 
+        }
518 
+
519 
+        @Override
520 
+        public void onViewPositionChanged(View changedView, int left, int top, int dx, int dy) {
521 
+            super.onViewPositionChanged(changedView, left, top, dx, dy);
522 
+            if ((mTrackingEdge & EDGE_LEFT) != 0) {
523 
+                mScrollPercent = Math.abs((float) left
524 
+                        / (mContentView.getWidth() + mShadowLeft.getIntrinsicWidth()));
525 
+            } else if ((mTrackingEdge & EDGE_RIGHT) != 0) {
526 
+                mScrollPercent = Math.abs((float) left
527 
+                        / (mContentView.getWidth() + mShadowRight.getIntrinsicWidth()));
528 
+            } else if ((mTrackingEdge & EDGE_BOTTOM) != 0) {
529 
+                mScrollPercent = Math.abs((float) top
530 
+                        / (mContentView.getHeight() + mShadowBottom.getIntrinsicHeight()));
531 
+            }
532 
+            mContentLeft = left;
533 
+            mContentTop = top;
534 
+            invalidate();
535 
+            if (mScrollPercent < mScrollThreshold && !mIsScrollOverValid) {
536 
+                mIsScrollOverValid = true;
537 
+            }
538 
+            if (mListeners != null && !mListeners.isEmpty()
539 
+                    && mDragHelper.getViewDragState() == STATE_DRAGGING
540 
+                    && mScrollPercent >= mScrollThreshold && mIsScrollOverValid) {
541 
+                mIsScrollOverValid = false;
542 
+                for (SwipeListener listener : mListeners) {
543 
+                    listener.onScrollOverThreshold();
544 
+                }
545 
+            }
546 
+
547 
+            if (mScrollPercent >= 1) {
548 
+                if (!mActivity.isFinishing()) {
549 
+                    mActivity.finish();
550 
+                    mActivity.overridePendingTransition(0, 0);
551 
+                }
552 
+            }
553 
+        }
554 
+
555 
+        @Override
556 
+        public void onViewReleased(View releasedChild, float xvel, float yvel) {
557 
+            final int childWidth = releasedChild.getWidth();
558 
+            final int childHeight = releasedChild.getHeight();
559 
+
560 
+            int left = 0, top = 0;
561 
+            if ((mTrackingEdge & EDGE_LEFT) != 0) {
562 
+                left = xvel > 0 || xvel == 0 && mScrollPercent > mScrollThreshold ? childWidth
563 
+                        + mShadowLeft.getIntrinsicWidth() + OVERSCROLL_DISTANCE : 0;
564 
+            } else if ((mTrackingEdge & EDGE_RIGHT) != 0) {
565 
+                left = xvel < 0 || xvel == 0 && mScrollPercent > mScrollThreshold ? -(childWidth
566 
+                        + mShadowLeft.getIntrinsicWidth() + OVERSCROLL_DISTANCE) : 0;
567 
+            } else if ((mTrackingEdge & EDGE_BOTTOM) != 0) {
568 
+                top = yvel < 0 || yvel == 0 && mScrollPercent > mScrollThreshold ? -(childHeight
569 
+                        + mShadowBottom.getIntrinsicHeight() + OVERSCROLL_DISTANCE) : 0;
570 
+            }
571 
+
572 
+            mDragHelper.settleCapturedViewAt(left, top);
573 
+            invalidate();
574 
+        }
575 
+
576 
+        @Override
577 
+        public int clampViewPositionHorizontal(View child, int left, int dx) {
578 
+            int ret = 0;
579 
+            if ((mTrackingEdge & EDGE_LEFT) != 0) {
580 
+                ret = Math.min(child.getWidth(), Math.max(left, 0));
581 
+            } else if ((mTrackingEdge & EDGE_RIGHT) != 0) {
582 
+                ret = Math.min(0, Math.max(left, -child.getWidth()));
583 
+            }
584 
+            return ret;
585 
+        }
586 
+
587 
+        @Override
588 
+        public int clampViewPositionVertical(View child, int top, int dy) {
589 
+            int ret = 0;
590 
+            if ((mTrackingEdge & EDGE_BOTTOM) != 0) {
591 
+                ret = Math.min(0, Math.max(top, -child.getHeight()));
592 
+            }
593 
+            return ret;
594 
+        }
595 
+
596 
+        @Override
597 
+        public void onViewDragStateChanged(int state) {
598 
+            super.onViewDragStateChanged(state);
599 
+            if (mListeners != null && !mListeners.isEmpty()) {
600 
+                for (SwipeListener listener : mListeners) {
601 
+                    listener.onScrollStateChange(state, mScrollPercent);
602 
+                }
603 
+            }
604 
+        }
605 
+    }
606 
+}

+ 103 - 0
views/src/main/java/com/android/views/swipebacklayout/Utils.java
查看文件 

@@ -0,0 +1,103 @@
1 
+
2 
+package com.android.views.swipebacklayout;
3 
+
4 
+import android.app.Activity;
5 
+import android.app.ActivityOptions;
6 
+import android.os.Build;
7 
+
8 
+import java.lang.reflect.Method;
9 
+
10 
+/**
11 
+ * Created by Chaojun Wang on 6/9/14.
12 
+ */
13 
+public class Utils {
14 
+    private Utils() {
15 
+    }
16 
+
17 
+    /**
18 
+     * Convert a translucent themed Activity
19 
+     * {@link android.R.attr#windowIsTranslucent} to a fullscreen opaque
20 
+     * Activity.
21 
+     * <p>
22 
+     * Call this whenever the background of a translucent Activity has changed
23 
+     * to become opaque. Doing so will allow the {@link android.view.Surface} of
24 
+     * the Activity behind to be released.
25 
+     * <p>
26 
+     * This call has no effect on non-translucent activities or on activities
27 
+     * with the {@link android.R.attr#windowIsFloating} attribute.
28 
+     */
29 
+    public static void convertActivityFromTranslucent(Activity activity) {
30 
+        try {
31 
+            Method method = Activity.class.getDeclaredMethod("convertFromTranslucent");
32 
+            method.setAccessible(true);
33 
+            method.invoke(activity);
34 
+        } catch (Throwable t) {
35 
+        }
36 
+    }
37 
+
38 
+    /**
39 
+     * Convert a translucent themed Activity
40 
+     * {@link android.R.attr#windowIsTranslucent} back from opaque to
41 
+     * translucent following a call to
42 
+     * {@link #convertActivityFromTranslucent(Activity)} .
43 
+     * <p>
44 
+     * Calling this allows the Activity behind this one to be seen again. Once
45 
+     * all such Activities have been redrawn
46 
+     * <p>
47 
+     * This call has no effect on non-translucent activities or on activities
48 
+     * with the {@link android.R.attr#windowIsFloating} attribute.
49 
+     */
50 
+    public static void convertActivityToTranslucent(Activity activity) {
51 
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
52 
+            convertActivityToTranslucentAfterL(activity);
53 
+        } else {
54 
+            convertActivityToTranslucentBeforeL(activity);
55 
+        }
56 
+    }
57 
+
58 
+    /**
59 
+     * Calling the convertToTranslucent method on platforms before Android 5.0
60 
+     */
61 
+    public static void convertActivityToTranslucentBeforeL(Activity activity) {
62 
+        try {
63 
+            Class<?>[] classes = Activity.class.getDeclaredClasses();
64 
+            Class<?> translucentConversionListenerClazz = null;
65 
+            for (Class clazz : classes) {
66 
+                if (clazz.getSimpleName().contains("TranslucentConversionListener")) {
67 
+                    translucentConversionListenerClazz = clazz;
68 
+                }
69 
+            }
70 
+            Method method = Activity.class.getDeclaredMethod("convertToTranslucent",
71 
+                    translucentConversionListenerClazz);
72 
+            method.setAccessible(true);
73 
+            method.invoke(activity, new Object[] {
74 
+                null
75 
+            });
76 
+        } catch (Throwable t) {
77 
+        }
78 
+    }
79 
+
80 
+    /**
81 
+     * Calling the convertToTranslucent method on platforms after Android 5.0
82 
+     */
83 
+    private static void convertActivityToTranslucentAfterL(Activity activity) {
84 
+        try {
85 
+            Method getActivityOptions = Activity.class.getDeclaredMethod("getActivityOptions");
86 
+            getActivityOptions.setAccessible(true);
87 
+            Object options = getActivityOptions.invoke(activity);
88 
+
89 
+            Class<?>[] classes = Activity.class.getDeclaredClasses();
90 
+            Class<?> translucentConversionListenerClazz = null;
91 
+            for (Class clazz : classes) {
92 
+                if (clazz.getSimpleName().contains("TranslucentConversionListener")) {
93 
+                    translucentConversionListenerClazz = clazz;
94 
+                }
95 
+            }
96 
+            Method convertToTranslucent = Activity.class.getDeclaredMethod("convertToTranslucent",
97 
+                    translucentConversionListenerClazz, ActivityOptions.class);
98 
+            convertToTranslucent.setAccessible(true);
99 
+            convertToTranslucent.invoke(activity, null, options);
100 
+        } catch (Throwable t) {
101 
+        }
102 
+    }
103 
+}

+ 1580 - 0
views/src/main/java/com/android/views/swipebacklayout/ViewDragHelper.java
查看文件 

@@ -0,0 +1,1580 @@
1 
+/*
2 
+ * Copyright (C) 2013 The Android Open Source Project
3 
+ *
4 
+ * Licensed under the Apache License, Version 2.0 (the "License");
5 
+ * you may not use this file except in compliance with the License.
6 
+ * You may obtain a copy of the License at
7 
+ *
8 
+ *      http://www.apache.org/licenses/LICENSE-2.0
9 
+ *
10 
+ * Unless required by applicable law or agreed to in writing, software
11 
+ * distributed under the License is distributed on an "AS IS" BASIS,
12 
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 
+ * See the License for the specific language governing permissions and
14 
+ * limitations under the License.
15 
+ */
16 
+
17 
+package com.android.views.swipebacklayout;
18 
+
19 
+import android.content.Context;
20 
+import android.support.v4.view.MotionEventCompat;
21 
+import android.support.v4.view.VelocityTrackerCompat;
22 
+import android.support.v4.view.ViewCompat;
23 
+import android.support.v4.widget.ScrollerCompat;
24 
+import android.view.MotionEvent;
25 
+import android.view.VelocityTracker;
26 
+import android.view.View;
27 
+import android.view.ViewConfiguration;
28 
+import android.view.ViewGroup;
29 
+import android.view.animation.Interpolator;
30 
+
31 
+import java.util.Arrays;
32 
+
33 
+/**
34 
+ * ViewDragHelper is a utility class for writing custom ViewGroups. It offers a
35 
+ * number of useful operations and state tracking for allowing a user to drag
36 
+ * and reposition views within their parent ViewGroup.
37 
+ */
38 
+public class ViewDragHelper {
39 
+    private static final String TAG = "ViewDragHelper";
40 
+
41 
+    /**
42 
+     * A null/invalid pointer ID.
43 
+     */
44 
+    public static final int INVALID_POINTER = -1;
45 
+
46 
+    /**
47 
+     * A view is not currently being dragged or animating as a result of a
48 
+     * fling/snap.
49 
+     */
50 
+    public static final int STATE_IDLE = 0;
51 
+
52 
+    /**
53 
+     * A view is currently being dragged. The position is currently changing as
54 
+     * a result of user input or simulated user input.
55 
+     */
56 
+    public static final int STATE_DRAGGING = 1;
57 
+
58 
+    /**
59 
+     * A view is currently settling into place as a result of a fling or
60 
+     * predefined non-interactive motion.
61 
+     */
62 
+    public static final int STATE_SETTLING = 2;
63 
+
64 
+    /**
65 
+     * Edge flag indicating that the left edge should be affected.
66 
+     */
67 
+    public static final int EDGE_LEFT = 1 << 0;
68 
+
69 
+    /**
70 
+     * Edge flag indicating that the right edge should be affected.
71 
+     */
72 
+    public static final int EDGE_RIGHT = 1 << 1;
73 
+
74 
+    /**
75 
+     * Edge flag indicating that the top edge should be affected.
76 
+     */
77 
+    public static final int EDGE_TOP = 1 << 2;
78 
+
79 
+    /**
80 
+     * Edge flag indicating that the bottom edge should be affected.
81 
+     */
82 
+    public static final int EDGE_BOTTOM = 1 << 3;
83 
+
84 
+    /**
85 
+     * Edge flag set indicating all edges should be affected.
86 
+     */
87 
+    public static final int EDGE_ALL = EDGE_LEFT | EDGE_TOP | EDGE_RIGHT | EDGE_BOTTOM;
88 
+
89 
+    /**
90 
+     * Indicates that a check should occur along the horizontal axis
91 
+     */
92 
+    public static final int DIRECTION_HORIZONTAL = 1 << 0;
93 
+
94 
+    /**
95 
+     * Indicates that a check should occur along the vertical axis
96 
+     */
97 
+    public static final int DIRECTION_VERTICAL = 1 << 1;
98 
+
99 
+    /**
100 
+     * Indicates that a check should occur along all axes
101 
+     */
102 
+    public static final int DIRECTION_ALL = DIRECTION_HORIZONTAL | DIRECTION_VERTICAL;
103 
+
104 
+    public static final int EDGE_SIZE = 20; // dp
105 
+
106 
+    private static final int BASE_SETTLE_DURATION = 256; // ms
107 
+
108 
+    private static final int MAX_SETTLE_DURATION = 600; // ms
109 
+
110 
+    // Current drag state; idle, dragging or settling
111 
+    private int mDragState;
112 
+
113 
+    // Distance to travel before a drag may begin
114 
+    private int mTouchSlop;
115 
+
116 
+    // Last known position/pointer tracking
117 
+    private int mActivePointerId = INVALID_POINTER;
118 
+
119 
+    private float[] mInitialMotionX;
120 
+
121 
+    private float[] mInitialMotionY;
122 
+
123 
+    private float[] mLastMotionX;
124 
+
125 
+    private float[] mLastMotionY;
126 
+
127 
+    private int[] mInitialEdgeTouched;
128 
+
129 
+    private int[] mEdgeDragsInProgress;
130 
+
131 
+    private int[] mEdgeDragsLocked;
132 
+
133 
+    private int mPointersDown;
134 
+
135 
+    private VelocityTracker mVelocityTracker;
136 
+
137 
+    private float mMaxVelocity;
138 
+
139 
+    private float mMinVelocity;
140 
+
141 
+    private int mEdgeSize;
142 
+
143 
+    private int mTrackingEdges;
144 
+
145 
+    private ScrollerCompat mScroller;
146 
+
147 
+    private final Callback mCallback;
148 
+
149 
+    private View mCapturedView;
150 
+
151 
+    private boolean mReleaseInProgress;
152 
+
153 
+    private final ViewGroup mParentView;
154 
+
155 
+    /**
156 
+     * A Callback is used as a communication channel with the ViewDragHelper
157 
+     * back to the parent view using it. <code>on*</code>methods are invoked on
158 
+     * siginficant events and several accessor methods are expected to provide
159 
+     * the ViewDragHelper with more information about the state of the parent
160 
+     * view upon request. The callback also makes decisions governing the range
161 
+     * and draggability of child views.
162 
+     */
163 
+    public static abstract class Callback {
164 
+        /**
165 
+         * Called when the drag state changes. See the <code>STATE_*</code>
166 
+         * constants for more information.
167 
+         *
168 
+         * @param state The new drag state
169 
+         * @see #STATE_IDLE
170 
+         * @see #STATE_DRAGGING
171 
+         * @see #STATE_SETTLING
172 
+         */
173 
+        public void onViewDragStateChanged(int state) {
174 
+        }
175 
+
176 
+        /**
177 
+         * Called when the captured view's position changes as the result of a
178 
+         * drag or settle.
179 
+         *
180 
+         * @param changedView View whose position changed
181 
+         * @param left        New X coordinate of the left edge of the view
182 
+         * @param top         New Y coordinate of the top edge of the view
183 
+         * @param dx          Change in X position from the last call
184 
+         * @param dy          Change in Y position from the last call
185 
+         */
186 
+        public void onViewPositionChanged(View changedView, int left, int top, int dx, int dy) {
187 
+        }
188 
+
189 
+        /**
190 
+         * Called when a child view is captured for dragging or settling. The ID
191 
+         * of the pointer currently dragging the captured view is supplied. If
192 
+         * activePointerId is identified as {@link #INVALID_POINTER} the capture
193 
+         * is programmatic instead of pointer-initiated.
194 
+         *
195 
+         * @param capturedChild   Child view that was captured
196 
+         * @param activePointerId Pointer id tracking the child capture
197 
+         */
198 
+        public void onViewCaptured(View capturedChild, int activePointerId) {
199 
+        }
200 
+
201 
+        /**
202 
+         * Called when the child view is no longer being actively dragged. The
203 
+         * fling velocity is also supplied, if relevant. The velocity values may
204 
+         * be clamped to system minimums or maximums.
205 
+         * <p>
206 
+         * Calling code may decide to fling or otherwise release the view to let
207 
+         * it settle into place. It should do so using
208 
+         * {@link #settleCapturedViewAt(int, int)} or
209 
+         * {@link #flingCapturedView(int, int, int, int)}. If the Callback
210 
+         * invokes one of these methods, the ViewDragHelper will enter
211 
+         * {@link #STATE_SETTLING} and the view capture will not fully end until
212 
+         * it comes to a complete stop. If neither of these methods is invoked
213 
+         * before <code>onViewReleased</code> returns, the view will stop in
214 
+         * place and the ViewDragHelper will return to {@link #STATE_IDLE}.
215 
+         * </p>
216 
+         *
217 
+         * @param releasedChild The captured child view now being released
218 
+         * @param xvel          X velocity of the pointer as it left the screen in pixels
219 
+         *                      per second.
220 
+         * @param yvel          Y velocity of the pointer as it left the screen in pixels
221 
+         *                      per second.
222 
+         */
223 
+        public void onViewReleased(View releasedChild, float xvel, float yvel) {
224 
+        }
225 
+
226 
+        /**
227 
+         * Called when one of the subscribed edges in the parent view has been
228 
+         * touched by the user while no child view is currently captured.
229 
+         *
230 
+         * @param edgeFlags A combination of edge flags describing the edge(s)
231 
+         *                  currently touched
232 
+         * @param pointerId ID of the pointer touching the described edge(s)
233 
+         * @see #EDGE_LEFT
234 
+         * @see #EDGE_TOP
235 
+         * @see #EDGE_RIGHT
236 
+         * @see #EDGE_BOTTOM
237 
+         */
238 
+        public void onEdgeTouched(int edgeFlags, int pointerId) {
239 
+        }
240 
+
241 
+        /**
242 
+         * Called when the given edge may become locked. This can happen if an
243 
+         * edge drag was preliminarily rejected before beginning, but after
244 
+         * {@link #onEdgeTouched(int, int)} was called. This method should
245 
+         * return true to lock this edge or false to leave it unlocked. The
246 
+         * default behavior is to leave edges unlocked.
247 
+         *
248 
+         * @param edgeFlags A combination of edge flags describing the edge(s)
249 
+         *                  locked
250 
+         * @return true to lock the edge, false to leave it unlocked
251 
+         */
252 
+        public boolean onEdgeLock(int edgeFlags) {
253 
+            return false;
254 
+        }
255 
+
256 
+        /**
257 
+         * Called when the user has started a deliberate drag away from one of
258 
+         * the subscribed edges in the parent view while no child view is
259 
+         * currently captured.
260 
+         *
261 
+         * @param edgeFlags A combination of edge flags describing the edge(s)
262 
+         *                  dragged
263 
+         * @param pointerId ID of the pointer touching the described edge(s)
264 
+         * @see #EDGE_LEFT
265 
+         * @see #EDGE_TOP
266 
+         * @see #EDGE_RIGHT
267 
+         * @see #EDGE_BOTTOM
268 
+         */
269 
+        public void onEdgeDragStarted(int edgeFlags, int pointerId) {
270 
+        }
271 
+
272 
+        /**
273 
+         * Called to determine the Z-order of child views.
274 
+         *
275 
+         * @param index the ordered position to query for
276 
+         * @return index of the view that should be ordered at position
277 
+         * <code>index</code>
278 
+         */
279 
+        public int getOrderedChildIndex(int index) {
280 
+            return index;
281 
+        }
282 
+
283 
+        /**
284 
+         * Return the magnitude of a draggable child view's horizontal range of
285 
+         * motion in pixels. This method should return 0 for views that cannot
286 
+         * move horizontally.
287 
+         *
288 
+         * @param child Child view to check
289 
+         * @return range of horizontal motion in pixels
290 
+         */
291 
+        public int getViewHorizontalDragRange(View child) {
292 
+            return 0;
293 
+        }
294 
+
295 
+        /**
296 
+         * Return the magnitude of a draggable child view's vertical range of
297 
+         * motion in pixels. This method should return 0 for views that cannot
298 
+         * move vertically.
299 
+         *
300 
+         * @param child Child view to check
301 
+         * @return range of vertical motion in pixels
302 
+         */
303 
+        public int getViewVerticalDragRange(View child) {
304 
+            return 0;
305 
+        }
306 
+
307 
+        /**
308 
+         * Called when the user's input indicates that they want to capture the
309 
+         * given child view with the pointer indicated by pointerId. The
310 
+         * callback should return true if the user is permitted to drag the
311 
+         * given view with the indicated pointer.
312 
+         * <p>
313 
+         * ViewDragHelper may call this method multiple times for the same view
314 
+         * even if the view is already captured; this indicates that a new
315 
+         * pointer is trying to take control of the view.
316 
+         * </p>
317 
+         * <p>
318 
+         * If this method returns true, a call to
319 
+         * {@link #onViewCaptured(View, int)} will follow if the
320 
+         * capture is successful.
321 
+         * </p>
322 
+         *
323 
+         * @param child     Child the user is attempting to capture
324 
+         * @param pointerId ID of the pointer attempting the capture
325 
+         * @return true if capture should be allowed, false otherwise
326 
+         */
327 
+        public abstract boolean tryCaptureView(View child, int pointerId);
328 
+
329 
+        /**
330 
+         * Restrict the motion of the dragged child view along the horizontal
331 
+         * axis. The default implementation does not allow horizontal motion;
332 
+         * the extending class must override this method and provide the desired
333 
+         * clamping.
334 
+         *
335 
+         * @param child Child view being dragged
336 
+         * @param left  Attempted motion along the X axis
337 
+         * @param dx    Proposed change in position for left
338 
+         * @return The new clamped position for left
339 
+         */
340 
+        public int clampViewPositionHorizontal(View child, int left, int dx) {
341 
+            return 0;
342 
+        }
343 
+
344 
+        /**
345 
+         * Restrict the motion of the dragged child view along the vertical
346 
+         * axis. The default implementation does not allow vertical motion; the
347 
+         * extending class must override this method and provide the desired
348 
+         * clamping.
349 
+         *
350 
+         * @param child Child view being dragged
351 
+         * @param top   Attempted motion along the Y axis
352 
+         * @param dy    Proposed change in position for top
353 
+         * @return The new clamped position for top
354 
+         */
355 
+        public int clampViewPositionVertical(View child, int top, int dy) {
356 
+            return 0;
357 
+        }
358 
+    }
359 
+
360 
+    /**
361 
+     * Interpolator defining the animation curve for mScroller
362 
+     */
363 
+    private static final Interpolator sInterpolator = new Interpolator() {
364 
+        public float getInterpolation(float t) {
365 
+            t -= 1.0f;
366 
+            return t * t * t * t * t + 1.0f;
367 
+        }
368 
+    };
369 
+
370 
+    private final Runnable mSetIdleRunnable = new Runnable() {
371 
+        public void run() {
372 
+            setDragState(STATE_IDLE);
373 
+        }
374 
+    };
375 
+
376 
+    /**
377 
+     * Factory method to create a new ViewDragHelper.
378 
+     *
379 
+     * @param forParent Parent view to monitor
380 
+     * @param cb        Callback to provide information and receive events
381 
+     * @return a new ViewDragHelper instance
382 
+     */
383 
+    public static ViewDragHelper create(ViewGroup forParent, Callback cb) {
384 
+        return new ViewDragHelper(forParent.getContext(), forParent, cb);
385 
+    }
386 
+
387 
+    /**
388 
+     * Factory method to create a new ViewDragHelper.
389 
+     *
390 
+     * @param forParent   Parent view to monitor
391 
+     * @param sensitivity Multiplier for how sensitive the helper should be
392 
+     *                    about detecting the start of a drag. Larger values are more
393 
+     *                    sensitive. 1.0f is normal.
394 
+     * @param cb          Callback to provide information and receive events
395 
+     * @return a new ViewDragHelper instance
396 
+     */
397 
+    public static ViewDragHelper create(ViewGroup forParent, float sensitivity, Callback cb) {
398 
+        final ViewDragHelper helper = create(forParent, cb);
399 
+        helper.mTouchSlop = (int) (helper.mTouchSlop * (1 / sensitivity));
400 
+        return helper;
401 
+    }
402 
+
403 
+    /**
404 
+     * Apps should use ViewDragHelper.create() to get a new instance. This will
405 
+     * allow VDH to use internal compatibility implementations for different
406 
+     * platform versions.
407 
+     *
408 
+     * @param context   Context to initialize config-dependent params from
409 
+     * @param forParent Parent view to monitor
410 
+     */
411 
+    private ViewDragHelper(Context context, ViewGroup forParent, Callback cb) {
412 
+        if (forParent == null) {
413 
+            throw new IllegalArgumentException("Parent view may not be null");
414 
+        }
415 
+        if (cb == null) {
416 
+            throw new IllegalArgumentException("Callback may not be null");
417 
+        }
418 
+
419 
+        mParentView = forParent;
420 
+        mCallback = cb;
421 
+
422 
+        final ViewConfiguration vc = ViewConfiguration.get(context);
423 
+        final float density = context.getResources().getDisplayMetrics().density;
424 
+        mEdgeSize = (int) (EDGE_SIZE * density + 0.5f);
425 
+
426 
+        mTouchSlop = vc.getScaledTouchSlop();
427 
+        mMaxVelocity = vc.getScaledMaximumFlingVelocity();
428 
+        mMinVelocity = vc.getScaledMinimumFlingVelocity();
429 
+        mScroller = ScrollerCompat.create(context, sInterpolator);
430 
+    }
431 
+
432 
+    /**
433 
+     * Sets the sensitivity of the dragger.
434 
+     *
435 
+     * @param context     The application context.
436 
+     * @param sensitivity value between 0 and 1, the final value for touchSlop =
437 
+     *                    ViewConfiguration.getScaledTouchSlop * (1 / s);
438 
+     */
439 
+    public void setSensitivity(Context context, float sensitivity) {
440 
+        float s = Math.max(0f, Math.min(1.0f, sensitivity));
441 
+        ViewConfiguration viewConfiguration = ViewConfiguration.get(context);
442 
+        mTouchSlop = (int) (viewConfiguration.getScaledTouchSlop() * (1 / s));
443 
+    }
444 
+
445 
+    /**
446 
+     * Set the minimum velocity that will be detected as having a magnitude
447 
+     * greater than zero in pixels per second. Callback methods accepting a
448 
+     * velocity will be clamped appropriately.
449 
+     *
450 
+     * @param minVel minimum velocity to detect
451 
+     */
452 
+    public void setMinVelocity(float minVel) {
453 
+        mMinVelocity = minVel;
454 
+    }
455 
+
456 
+    /**
457 
+     * Set the max velocity that will be detected as having a magnitude
458 
+     * greater than zero in pixels per second. Callback methods accepting a
459 
+     * velocity will be clamped appropriately.
460 
+     *
461 
+     * @param maxVel max velocity to detect
462 
+     */
463 
+    public void setMaxVelocity(float maxVel) {
464 
+        mMaxVelocity = maxVel;
465 
+    }
466 
+
467 
+    /**
468 
+     * Return the currently configured minimum velocity. Any flings with a
469 
+     * magnitude less than this value in pixels per second. Callback methods
470 
+     * accepting a velocity will receive zero as a velocity value if the real
471 
+     * detected velocity was below this threshold.
472 
+     *
473 
+     * @return the minimum velocity that will be detected
474 
+     */
475 
+    public float getMinVelocity() {
476 
+        return mMinVelocity;
477 
+    }
478 
+
479 
+    /**
480 
+     * Retrieve the current drag state of this helper. This will return one of
481 
+     * {@link #STATE_IDLE}, {@link #STATE_DRAGGING} or {@link #STATE_SETTLING}.
482 
+     *
483 
+     * @return The current drag state
484 
+     */
485 
+    public int getViewDragState() {
486 
+        return mDragState;
487 
+    }
488 
+
489 
+    /**
490 
+     * Enable edge tracking for the selected edges of the parent view. The
491 
+     * callback's
492 
+     * {@link me.imid.swipebacklayout.lib.ViewDragHelper.Callback#onEdgeTouched(int, int)}
493 
+     * and
494 
+     * {@link me.imid.swipebacklayout.lib.ViewDragHelper.Callback#onEdgeDragStarted(int, int)}
495 
+     * methods will only be invoked for edges for which edge tracking has been
496 
+     * enabled.
497 
+     *
498 
+     * @param edgeFlags Combination of edge flags describing the edges to watch
499 
+     * @see #EDGE_LEFT
500 
+     * @see #EDGE_TOP
501 
+     * @see #EDGE_RIGHT
502 
+     * @see #EDGE_BOTTOM
503 
+     */
504 
+    public void setEdgeTrackingEnabled(int edgeFlags) {
505 
+        mTrackingEdges = edgeFlags;
506 
+    }
507 
+
508 
+    /**
509 
+     * Return the size of an edge. This is the range in pixels along the edges
510 
+     * of this view that will actively detect edge touches or drags if edge
511 
+     * tracking is enabled.
512 
+     *
513 
+     * @return The size of an edge in pixels
514 
+     * @see #setEdgeTrackingEnabled(int)
515 
+     */
516 
+    public int getEdgeSize() {
517 
+        return mEdgeSize;
518 
+    }
519 
+
520 
+    /**
521 
+     * Set the size of an edge. This is the range in pixels along the edges of
522 
+     * this view that will actively detect edge touches or drags if edge
523 
+     * tracking is enabled.
524 
+     *
525 
+     * @param size The size of an edge in pixels
526 
+     */
527 
+    public void setEdgeSize(int size) {
528 
+        mEdgeSize = size;
529 
+    }
530 
+
531 
+    /**
532 
+     * Capture a specific child view for dragging within the parent. The
533 
+     * callback will be notified but
534 
+     * {@link me.imid.swipebacklayout.lib.ViewDragHelper.Callback#tryCaptureView(View, int)}
535 
+     * will not be asked permission to capture this view.
536 
+     *
537 
+     * @param childView       Child view to capture
538 
+     * @param activePointerId ID of the pointer that is dragging the captured
539 
+     *                        child view
540 
+     */
541 
+    public void captureChildView(View childView, int activePointerId) {
542 
+        if (childView.getParent() != mParentView) {
543 
+            throw new IllegalArgumentException("captureChildView: parameter must be a descendant "
544 
+                    + "of the ViewDragHelper's tracked parent view (" + mParentView + ")");
545 
+        }
546 
+
547 
+        mCapturedView = childView;
548 
+        mActivePointerId = activePointerId;
549 
+        mCallback.onViewCaptured(childView, activePointerId);
550 
+        setDragState(STATE_DRAGGING);
551 
+    }
552 
+
553 
+    /**
554 
+     * @return The currently captured view, or null if no view has been
555 
+     * captured.
556 
+     */
557 
+    public View getCapturedView() {
558 
+        return mCapturedView;
559 
+    }
560 
+
561 
+    /**
562 
+     * @return The ID of the pointer currently dragging the captured view, or
563 
+     * {@link #INVALID_POINTER}.
564 
+     */
565 
+    public int getActivePointerId() {
566 
+        return mActivePointerId;
567 
+    }
568 
+
569 
+    /**
570 
+     * @return The minimum distance in pixels that the user must travel to
571 
+     * initiate a drag
572 
+     */
573 
+    public int getTouchSlop() {
574 
+        return mTouchSlop;
575 
+    }
576 
+
577 
+    /**
578 
+     * The result of a call to this method is equivalent to
579 
+     * {@link #processTouchEvent(MotionEvent)} receiving an
580 
+     * ACTION_CANCEL event.
581 
+     */
582 
+    public void cancel() {
583 
+        mActivePointerId = INVALID_POINTER;
584 
+        clearMotionHistory();
585 
+
586 
+        if (mVelocityTracker != null) {
587 
+            mVelocityTracker.recycle();
588 
+            mVelocityTracker = null;
589 
+        }
590 
+    }
591 
+
592 
+    /**
593 
+     * {@link #cancel()}, but also abort all motion in progress and snap to the
594 
+     * end of any animation.
595 
+     */
596 
+    public void abort() {
597 
+        cancel();
598 
+        if (mDragState == STATE_SETTLING) {
599 
+            final int oldX = mScroller.getCurrX();
600 
+            final int oldY = mScroller.getCurrY();
601 
+            mScroller.abortAnimation();
602 
+            final int newX = mScroller.getCurrX();
603 
+            final int newY = mScroller.getCurrY();
604 
+            mCallback.onViewPositionChanged(mCapturedView, newX, newY, newX - oldX, newY - oldY);
605 
+        }
606 
+        setDragState(STATE_IDLE);
607 
+    }
608 
+
609 
+    /**
610 
+     * Animate the view <code>child</code> to the given (left, top) position. If
611 
+     * this method returns true, the caller should invoke
612 
+     * {@link #continueSettling(boolean)} on each subsequent frame to continue
613 
+     * the motion until it returns false. If this method returns false there is
614 
+     * no further work to do to complete the movement.
615 
+     * <p>
616 
+     * This operation does not count as a capture event, though
617 
+     * {@link #getCapturedView()} will still report the sliding view while the
618 
+     * slide is in progress.
619 
+     * </p>
620 
+     *
621 
+     * @param child     Child view to capture and animate
622 
+     * @param finalLeft Final left position of child
623 
+     * @param finalTop  Final top position of child
624 
+     * @return true if animation should continue through
625 
+     * {@link #continueSettling(boolean)} calls
626 
+     */
627 
+    public boolean smoothSlideViewTo(View child, int finalLeft, int finalTop) {
628 
+        mCapturedView = child;
629 
+        mActivePointerId = INVALID_POINTER;
630 
+
631 
+        return forceSettleCapturedViewAt(finalLeft, finalTop, 0, 0);
632 
+    }
633 
+
634 
+    /**
635 
+     * Settle the captured view at the given (left, top) position. The
636 
+     * appropriate velocity from prior motion will be taken into account. If
637 
+     * this method returns true, the caller should invoke
638 
+     * {@link #continueSettling(boolean)} on each subsequent frame to continue
639 
+     * the motion until it returns false. If this method returns false there is
640 
+     * no further work to do to complete the movement.
641 
+     *
642 
+     * @param finalLeft Settled left edge position for the captured view
643 
+     * @param finalTop  Settled top edge position for the captured view
644 
+     * @return true if animation should continue through
645 
+     * {@link #continueSettling(boolean)} calls
646 
+     */
647 
+    public boolean settleCapturedViewAt(int finalLeft, int finalTop) {
648 
+        if (!mReleaseInProgress) {
649 
+            throw new IllegalStateException("Cannot settleCapturedViewAt outside of a call to "
650 
+                    + "Callback#onViewReleased");
651 
+        }
652 
+
653 
+        return forceSettleCapturedViewAt(finalLeft, finalTop,
654 
+                (int) VelocityTrackerCompat.getXVelocity(mVelocityTracker, mActivePointerId),
655 
+                (int) VelocityTrackerCompat.getYVelocity(mVelocityTracker, mActivePointerId));
656 
+    }
657 
+
658 
+    /**
659 
+     * Settle the captured view at the given (left, top) position.
660 
+     *
661 
+     * @param finalLeft Target left position for the captured view
662 
+     * @param finalTop  Target top position for the captured view
663 
+     * @param xvel      Horizontal velocity
664 
+     * @param yvel      Vertical velocity
665 
+     * @return true if animation should continue through
666 
+     * {@link #continueSettling(boolean)} calls
667 
+     */
668 
+    private boolean forceSettleCapturedViewAt(int finalLeft, int finalTop, int xvel, int yvel) {
669 
+        final int startLeft = mCapturedView.getLeft();
670 
+        final int startTop = mCapturedView.getTop();
671 
+        final int dx = finalLeft - startLeft;
672 
+        final int dy = finalTop - startTop;
673 
+
674 
+        if (dx == 0 && dy == 0) {
675 
+            // Nothing to do. Send callbacks, be done.
676 
+            mScroller.abortAnimation();
677 
+            setDragState(STATE_IDLE);
678 
+            return false;
679 
+        }
680 
+
681 
+        final int duration = computeSettleDuration(mCapturedView, dx, dy, xvel, yvel);
682 
+        mScroller.startScroll(startLeft, startTop, dx, dy, duration);
683 
+
684 
+        setDragState(STATE_SETTLING);
685 
+        return true;
686 
+    }
687 
+
688 
+    private int computeSettleDuration(View child, int dx, int dy, int xvel, int yvel) {
689 
+        xvel = clampMag(xvel, (int) mMinVelocity, (int) mMaxVelocity);
690 
+        yvel = clampMag(yvel, (int) mMinVelocity, (int) mMaxVelocity);
691 
+        final int absDx = Math.abs(dx);
692 
+        final int absDy = Math.abs(dy);
693 
+        final int absXVel = Math.abs(xvel);
694 
+        final int absYVel = Math.abs(yvel);
695 
+        final int addedVel = absXVel + absYVel;
696 
+        final int addedDistance = absDx + absDy;
697 
+
698 
+        final float xweight = xvel != 0 ? (float) absXVel / addedVel : (float) absDx
699 
+                / addedDistance;
700 
+        final float yweight = yvel != 0 ? (float) absYVel / addedVel : (float) absDy
701 
+                / addedDistance;
702 
+
703 
+        int xduration = computeAxisDuration(dx, xvel, mCallback.getViewHorizontalDragRange(child));
704 
+        int yduration = computeAxisDuration(dy, yvel, mCallback.getViewVerticalDragRange(child));
705 
+
706 
+        return (int) (xduration * xweight + yduration * yweight);
707 
+    }
708 
+
709 
+    private int computeAxisDuration(int delta, int velocity, int motionRange) {
710 
+        if (delta == 0) {
711 
+            return 0;
712 
+        }
713 
+
714 
+        final int width = mParentView.getWidth();
715 
+        final int halfWidth = width / 2;
716 
+        final float distanceRatio = Math.min(1f, (float) Math.abs(delta) / width);
717 
+        final float distance = halfWidth + halfWidth
718 
+                * distanceInfluenceForSnapDuration(distanceRatio);
719 
+
720 
+        int duration;
721 
+        velocity = Math.abs(velocity);
722 
+        if (velocity > 0) {
723 
+            duration = 4 * Math.round(1000 * Math.abs(distance / velocity));
724 
+        } else {
725 
+            final float range = (float) Math.abs(delta) / motionRange;
726 
+            duration = (int) ((range + 1) * BASE_SETTLE_DURATION);
727 
+        }
728 
+        return Math.min(duration, MAX_SETTLE_DURATION);
729 
+    }
730 
+
731 
+    /**
732 
+     * Clamp the magnitude of value for absMin and absMax. If the value is below
733 
+     * the minimum, it will be clamped to zero. If the value is above the
734 
+     * maximum, it will be clamped to the maximum.
735 
+     *
736 
+     * @param value  Value to clamp
737 
+     * @param absMin Absolute value of the minimum significant value to return
738 
+     * @param absMax Absolute value of the maximum value to return
739 
+     * @return The clamped value with the same sign as <code>value</code>
740 
+     */
741 
+    private int clampMag(int value, int absMin, int absMax) {
742 
+        final int absValue = Math.abs(value);
743 
+        if (absValue < absMin)
744 
+            return 0;
745 
+        if (absValue > absMax)
746 
+            return value > 0 ? absMax : -absMax;
747 
+        return value;
748 
+    }
749 
+
750 
+    /**
751 
+     * Clamp the magnitude of value for absMin and absMax. If the value is below
752 
+     * the minimum, it will be clamped to zero. If the value is above the
753 
+     * maximum, it will be clamped to the maximum.
754 
+     *
755 
+     * @param value  Value to clamp
756 
+     * @param absMin Absolute value of the minimum significant value to return
757 
+     * @param absMax Absolute value of the maximum value to return
758 
+     * @return The clamped value with the same sign as <code>value</code>
759 
+     */
760 
+    private float clampMag(float value, float absMin, float absMax) {
761 
+        final float absValue = Math.abs(value);
762 
+        if (absValue < absMin)
763 
+            return 0;
764 
+        if (absValue > absMax)
765 
+            return value > 0 ? absMax : -absMax;
766 
+        return value;
767 
+    }
768 
+
769 
+    private float distanceInfluenceForSnapDuration(float f) {
770 
+        f -= 0.5f; // center the values about 0.
771 
+        f *= 0.3f * Math.PI / 2.0f;
772 
+        return (float) Math.sin(f);
773 
+    }
774 
+
775 
+    /**
776 
+     * Settle the captured view based on standard free-moving fling behavior.
777 
+     * The caller should invoke {@link #continueSettling(boolean)} on each
778 
+     * subsequent frame to continue the motion until it returns false.
779 
+     *
780 
+     * @param minLeft Minimum X position for the view's left edge
781 
+     * @param minTop  Minimum Y position for the view's top edge
782 
+     * @param maxLeft Maximum X position for the view's left edge
783 
+     * @param maxTop  Maximum Y position for the view's top edge
784 
+     */
785 
+    public void flingCapturedView(int minLeft, int minTop, int maxLeft, int maxTop) {
786 
+        if (!mReleaseInProgress) {
787 
+            throw new IllegalStateException("Cannot flingCapturedView outside of a call to "
788 
+                    + "Callback#onViewReleased");
789 
+        }
790 
+
791 
+        mScroller.fling(mCapturedView.getLeft(), mCapturedView.getTop(),
792 
+                (int) VelocityTrackerCompat.getXVelocity(mVelocityTracker, mActivePointerId),
793 
+                (int) VelocityTrackerCompat.getYVelocity(mVelocityTracker, mActivePointerId),
794 
+                minLeft, maxLeft, minTop, maxTop);
795 
+
796 
+        setDragState(STATE_SETTLING);
797 
+    }
798 
+
799 
+    /**
800 
+     * Move the captured settling view by the appropriate amount for the current
801 
+     * time. If <code>continueSettling</code> returns true, the caller should
802 
+     * call it again on the next frame to continue.
803 
+     *
804 
+     * @param deferCallbacks true if state callbacks should be deferred via
805 
+     *                       posted message. Set this to true if you are calling this
806 
+     *                       method from {@link View#computeScroll()} or
807 
+     *                       similar methods invoked as part of layout or drawing.
808 
+     * @return true if settle is still in progress
809 
+     */
810 
+    public boolean continueSettling(boolean deferCallbacks) {
811 
+        if (mDragState == STATE_SETTLING) {
812 
+            boolean keepGoing = mScroller.computeScrollOffset();
813 
+            final int x = mScroller.getCurrX();
814 
+            final int y = mScroller.getCurrY();
815 
+            final int dx = x - mCapturedView.getLeft();
816 
+            final int dy = y - mCapturedView.getTop();
817 
+
818 
+            if (dx != 0) {
819 
+                mCapturedView.offsetLeftAndRight(dx);
820 
+            }
821 
+            if (dy != 0) {
822 
+                mCapturedView.offsetTopAndBottom(dy);
823 
+            }
824 
+
825 
+            if (dx != 0 || dy != 0) {
826 
+                mCallback.onViewPositionChanged(mCapturedView, x, y, dx, dy);
827 
+            }
828 
+
829 
+            if (keepGoing && x == mScroller.getFinalX() && y == mScroller.getFinalY()) {
830 
+                // Close enough. The interpolator/scroller might think we're
831 
+                // still moving
832 
+                // but the user sure doesn't.
833 
+                mScroller.abortAnimation();
834 
+                keepGoing = mScroller.isFinished();
835 
+            }
836 
+
837 
+            if (!keepGoing) {
838 
+                if (deferCallbacks) {
839 
+                    mParentView.post(mSetIdleRunnable);
840 
+                } else {
841 
+                    setDragState(STATE_IDLE);
842 
+                }
843 
+            }
844 
+        }
845 
+
846 
+        return mDragState == STATE_SETTLING;
847 
+    }
848 
+
849 
+    /**
850 
+     * Like all callback events this must happen on the UI thread, but release
851 
+     * involves some extra semantics. During a release (mReleaseInProgress) is
852 
+     * the only time it is valid to call {@link #settleCapturedViewAt(int, int)}
853 
+     * or {@link #flingCapturedView(int, int, int, int)}.
854 
+     */
855 
+    private void dispatchViewReleased(float xvel, float yvel) {
856 
+        mReleaseInProgress = true;
857 
+        mCallback.onViewReleased(mCapturedView, xvel, yvel);
858 
+        mReleaseInProgress = false;
859 
+
860 
+        if (mDragState == STATE_DRAGGING) {
861 
+            // onViewReleased didn't call a method that would have changed this.
862 
+            // Go idle.
863 
+            setDragState(STATE_IDLE);
864 
+        }
865 
+    }
866 
+
867 
+    private void clearMotionHistory() {
868 
+        if (mInitialMotionX == null) {
869 
+            return;
870 
+        }
871 
+        Arrays.fill(mInitialMotionX, 0);
872 
+        Arrays.fill(mInitialMotionY, 0);
873 
+        Arrays.fill(mLastMotionX, 0);
874 
+        Arrays.fill(mLastMotionY, 0);
875 
+        Arrays.fill(mInitialEdgeTouched, 0);
876 
+        Arrays.fill(mEdgeDragsInProgress, 0);
877 
+        Arrays.fill(mEdgeDragsLocked, 0);
878 
+        mPointersDown = 0;
879 
+    }
880 
+
881 
+    private void clearMotionHistory(int pointerId) {
882 
+        if (mInitialMotionX == null) {
883 
+            return;
884 
+        }
885 
+        mInitialMotionX[pointerId] = 0;
886 
+        mInitialMotionY[pointerId] = 0;
887 
+        mLastMotionX[pointerId] = 0;
888 
+        mLastMotionY[pointerId] = 0;
889 
+        mInitialEdgeTouched[pointerId] = 0;
890 
+        mEdgeDragsInProgress[pointerId] = 0;
891 
+        mEdgeDragsLocked[pointerId] = 0;
892 
+        mPointersDown &= ~(1 << pointerId);
893 
+    }
894 
+
895 
+    private void ensureMotionHistorySizeForId(int pointerId) {
896 
+        if (mInitialMotionX == null || mInitialMotionX.length <= pointerId) {
897 
+            float[] imx = new float[pointerId + 1];
898 
+            float[] imy = new float[pointerId + 1];
899 
+            float[] lmx = new float[pointerId + 1];
900 
+            float[] lmy = new float[pointerId + 1];
901 
+            int[] iit = new int[pointerId + 1];
902 
+            int[] edip = new int[pointerId + 1];
903 
+            int[] edl = new int[pointerId + 1];
904 
+
905 
+            if (mInitialMotionX != null) {
906 
+                System.arraycopy(mInitialMotionX, 0, imx, 0, mInitialMotionX.length);
907 
+                System.arraycopy(mInitialMotionY, 0, imy, 0, mInitialMotionY.length);
908 
+                System.arraycopy(mLastMotionX, 0, lmx, 0, mLastMotionX.length);
909 
+                System.arraycopy(mLastMotionY, 0, lmy, 0, mLastMotionY.length);
910 
+                System.arraycopy(mInitialEdgeTouched, 0, iit, 0, mInitialEdgeTouched.length);
911 
+                System.arraycopy(mEdgeDragsInProgress, 0, edip, 0, mEdgeDragsInProgress.length);
912 
+                System.arraycopy(mEdgeDragsLocked, 0, edl, 0, mEdgeDragsLocked.length);
913 
+            }
914 
+
915 
+            mInitialMotionX = imx;
916 
+            mInitialMotionY = imy;
917 
+            mLastMotionX = lmx;
918 
+            mLastMotionY = lmy;
919 
+            mInitialEdgeTouched = iit;
920 
+            mEdgeDragsInProgress = edip;
921 
+            mEdgeDragsLocked = edl;
922 
+        }
923 
+    }
924 
+
925 
+    private void saveInitialMotion(float x, float y, int pointerId) {
926 
+        ensureMotionHistorySizeForId(pointerId);
927 
+        mInitialMotionX[pointerId] = mLastMotionX[pointerId] = x;
928 
+        mInitialMotionY[pointerId] = mLastMotionY[pointerId] = y;
929 
+        mInitialEdgeTouched[pointerId] = getEdgeTouched((int) x, (int) y);
930 
+        mPointersDown |= 1 << pointerId;
931 
+    }
932 
+
933 
+    private void saveLastMotion(MotionEvent ev) {
934 
+        final int pointerCount = MotionEventCompat.getPointerCount(ev);
935 
+        for (int i = 0; i < pointerCount; i++) {
936 
+            final int pointerId = MotionEventCompat.getPointerId(ev, i);
937 
+            final float x = MotionEventCompat.getX(ev, i);
938 
+            final float y = MotionEventCompat.getY(ev, i);
939 
+            mLastMotionX[pointerId] = x;
940 
+            mLastMotionY[pointerId] = y;
941 
+        }
942 
+    }
943 
+
944 
+    /**
945 
+     * Check if the given pointer ID represents a pointer that is currently down
946 
+     * (to the best of the ViewDragHelper's knowledge).
947 
+     * <p>
948 
+     * The state used to report this information is populated by the methods
949 
+     * {@link #shouldInterceptTouchEvent(MotionEvent)} or
950 
+     * {@link #processTouchEvent(MotionEvent)}. If one of these
951 
+     * methods has not been called for all relevant MotionEvents to track, the
952 
+     * information reported by this method may be stale or incorrect.
953 
+     * </p>
954 
+     *
955 
+     * @param pointerId pointer ID to check; corresponds to IDs provided by
956 
+     *                  MotionEvent
957 
+     * @return true if the pointer with the given ID is still down
958 
+     */
959 
+    public boolean isPointerDown(int pointerId) {
960 
+        return (mPointersDown & 1 << pointerId) != 0;
961 
+    }
962 
+
963 
+    void setDragState(int state) {
964 
+        if (mDragState != state) {
965 
+            mDragState = state;
966 
+            mCallback.onViewDragStateChanged(state);
967 
+            if (state == STATE_IDLE) {
968 
+                mCapturedView = null;
969 
+            }
970 
+        }
971 
+    }
972 
+
973 
+    /**
974 
+     * Attempt to capture the view with the given pointer ID. The callback will
975 
+     * be involved. This will put us into the "dragging" state. If we've already
976 
+     * captured this view with this pointer this method will immediately return
977 
+     * true without consulting the callback.
978 
+     *
979 
+     * @param toCapture View to capture
980 
+     * @param pointerId Pointer to capture with
981 
+     * @return true if capture was successful
982 
+     */
983 
+    boolean tryCaptureViewForDrag(View toCapture, int pointerId) {
984 
+        if (toCapture == mCapturedView && mActivePointerId == pointerId) {
985 
+            // Already done!
986 
+            return true;
987 
+        }
988 
+        if (toCapture != null && mCallback.tryCaptureView(toCapture, pointerId)) {
989 
+            mActivePointerId = pointerId;
990 
+            captureChildView(toCapture, pointerId);
991 
+            return true;
992 
+        }
993 
+        return false;
994 
+    }
995 
+
996 
+    /**
997 
+     * Tests scrollability within child views of v given a delta of dx.
998 
+     *
999 
+     * @param v      View to test for horizontal scrollability
1000 
+     * @param checkV Whether the view v passed should itself be checked for
1001 
+     *               scrollability (true), or just its children (false).
1002 
+     * @param dx     Delta scrolled in pixels along the X axis
1003 
+     * @param dy     Delta scrolled in pixels along the Y axis
1004 
+     * @param x      X coordinate of the active touch point
1005 
+     * @param y      Y coordinate of the active touch point
1006 
+     * @return true if child views of v can be scrolled by delta of dx.
1007 
+     */
1008 
+    protected boolean canScroll(View v, boolean checkV, int dx, int dy, int x, int y) {
1009 
+        if (v instanceof ViewGroup) {
1010 
+            final ViewGroup group = (ViewGroup) v;
1011 
+            final int scrollX = v.getScrollX();
1012 
+            final int scrollY = v.getScrollY();
1013 
+            final int count = group.getChildCount();
1014 
+            // Count backwards - let topmost views consume scroll distance
1015 
+            // first.
1016 
+            for (int i = count - 1; i >= 0; i--) {
1017 
+                // TODO: Add versioned support here for transformed views.
1018 
+                // This will not work for transformed views in Honeycomb+
1019 
+                final View child = group.getChildAt(i);
1020 
+                if (x + scrollX >= child.getLeft()
1021 
+                        && x + scrollX < child.getRight()
1022 
+                        && y + scrollY >= child.getTop()
1023 
+                        && y + scrollY < child.getBottom()
1024 
+                        && canScroll(child, true, dx, dy, x + scrollX - child.getLeft(), y
1025 
+                        + scrollY - child.getTop())) {
1026 
+                    return true;
1027 
+                }
1028 
+            }
1029 
+        }
1030 
+
1031 
+        return checkV
1032 
+                && (ViewCompat.canScrollHorizontally(v, -dx) || ViewCompat.canScrollVertically(v,
1033 
+                -dy));
1034 
+    }
1035 
+
1036 
+    /**
1037 
+     * Check if this event as provided to the parent view's
1038 
+     * onInterceptTouchEvent should cause the parent to intercept the touch
1039 
+     * event stream.
1040 
+     *
1041 
+     * @param ev MotionEvent provided to onInterceptTouchEvent
1042 
+     * @return true if the parent view should return true from
1043 
+     * onInterceptTouchEvent
1044 
+     */
1045 
+    public boolean shouldInterceptTouchEvent(MotionEvent ev) {
1046 
+        final int action = MotionEventCompat.getActionMasked(ev);
1047 
+        final int actionIndex = MotionEventCompat.getActionIndex(ev);
1048 
+
1049 
+        if (action == MotionEvent.ACTION_DOWN) {
1050 
+            // Reset things for a new event stream, just in case we didn't get
1051 
+            // the whole previous stream.
1052 
+            cancel();
1053 
+        }
1054 
+
1055 
+        if (mVelocityTracker == null) {
1056 
+            mVelocityTracker = VelocityTracker.obtain();
1057 
+        }
1058 
+        mVelocityTracker.addMovement(ev);
1059 
+
1060 
+        switch (action) {
1061 
+            case MotionEvent.ACTION_DOWN: {
1062 
+                final float x = ev.getX();
1063 
+                final float y = ev.getY();
1064 
+                final int pointerId = MotionEventCompat.getPointerId(ev, 0);
1065 
+                saveInitialMotion(x, y, pointerId);
1066 
+
1067 
+                final View toCapture = findTopChildUnder((int) x, (int) y);
1068 
+
1069 
+                // Catch a settling view if possible.
1070 
+                if (toCapture == mCapturedView && mDragState == STATE_SETTLING) {
1071 
+                    tryCaptureViewForDrag(toCapture, pointerId);
1072 
+                }
1073 
+
1074 
+                final int edgesTouched = mInitialEdgeTouched[pointerId];
1075 
+                if ((edgesTouched & mTrackingEdges) != 0) {
1076 
+                    mCallback.onEdgeTouched(edgesTouched & mTrackingEdges, pointerId);
1077 
+                }
1078 
+                break;
1079 
+            }
1080 
+
1081 
+            case MotionEventCompat.ACTION_POINTER_DOWN: {
1082 
+                final int pointerId = MotionEventCompat.getPointerId(ev, actionIndex);
1083 
+                final float x = MotionEventCompat.getX(ev, actionIndex);
1084 
+                final float y = MotionEventCompat.getY(ev, actionIndex);
1085 
+
1086 
+                saveInitialMotion(x, y, pointerId);
1087 
+
1088 
+                // A ViewDragHelper can only manipulate one view at a time.
1089 
+                if (mDragState == STATE_IDLE) {
1090 
+                    final int edgesTouched = mInitialEdgeTouched[pointerId];
1091 
+                    if ((edgesTouched & mTrackingEdges) != 0) {
1092 
+                        mCallback.onEdgeTouched(edgesTouched & mTrackingEdges, pointerId);
1093 
+                    }
1094 
+                } else if (mDragState == STATE_SETTLING) {
1095 
+                    // Catch a settling view if possible.
1096 
+                    final View toCapture = findTopChildUnder((int) x, (int) y);
1097 
+                    if (toCapture == mCapturedView) {
1098 
+                        tryCaptureViewForDrag(toCapture, pointerId);
1099 
+                    }
1100 
+                }
1101 
+                break;
1102 
+            }
1103 
+
1104 
+            case MotionEvent.ACTION_MOVE: {
1105 
+                // First to cross a touch slop over a draggable view wins. Also
1106 
+                // report edge drags.
1107 
+                final int pointerCount = MotionEventCompat.getPointerCount(ev);
1108 
+                for (int i = 0; i < pointerCount; i++) {
1109 
+                    final int pointerId = MotionEventCompat.getPointerId(ev, i);
1110 
+                    final float x = MotionEventCompat.getX(ev, i);
1111 
+                    final float y = MotionEventCompat.getY(ev, i);
1112 
+                    final float dx = x - mInitialMotionX[pointerId];
1113 
+                    final float dy = y - mInitialMotionY[pointerId];
1114 
+
1115 
+                    reportNewEdgeDrags(dx, dy, pointerId);
1116 
+                    if (mDragState == STATE_DRAGGING) {
1117 
+                        // Callback might have started an edge drag
1118 
+                        break;
1119 
+                    }
1120 
+
1121 
+                    final View toCapture = findTopChildUnder((int) x, (int) y);
1122 
+                    if (toCapture != null && checkTouchSlop(toCapture, dx, dy)
1123 
+                            && tryCaptureViewForDrag(toCapture, pointerId)) {
1124 
+                        break;
1125 
+                    }
1126 
+                }
1127 
+                saveLastMotion(ev);
1128 
+                break;
1129 
+            }
1130 
+
1131 
+            case MotionEventCompat.ACTION_POINTER_UP: {
1132 
+                final int pointerId = MotionEventCompat.getPointerId(ev, actionIndex);
1133 
+                clearMotionHistory(pointerId);
1134 
+                break;
1135 
+            }
1136 
+
1137 
+            case MotionEvent.ACTION_UP:
1138 
+            case MotionEvent.ACTION_CANCEL: {
1139 
+                cancel();
1140 
+                break;
1141 
+            }
1142 
+        }
1143 
+
1144 
+        return mDragState == STATE_DRAGGING;
1145 
+    }
1146 
+
1147 
+    /**
1148 
+     * Process a touch event received by the parent view. This method will
1149 
+     * dispatch callback events as needed before returning. The parent view's
1150 
+     * onTouchEvent implementation should call this.
1151 
+     *
1152 
+     * @param ev The touch event received by the parent view
1153 
+     */
1154 
+    public void processTouchEvent(MotionEvent ev) {
1155 
+        final int action = MotionEventCompat.getActionMasked(ev);
1156 
+        final int actionIndex = MotionEventCompat.getActionIndex(ev);
1157 
+
1158 
+        if (action == MotionEvent.ACTION_DOWN) {
1159 
+            // Reset things for a new event stream, just in case we didn't get
1160 
+            // the whole previous stream.
1161 
+            cancel();
1162 
+        }
1163 
+
1164 
+        if (mVelocityTracker == null) {
1165 
+            mVelocityTracker = VelocityTracker.obtain();
1166 
+        }
1167 
+        mVelocityTracker.addMovement(ev);
1168 
+
1169 
+        switch (action) {
1170 
+            case MotionEvent.ACTION_DOWN: {
1171 
+                final float x = ev.getX();
1172 
+                final float y = ev.getY();
1173 
+                final int pointerId = MotionEventCompat.getPointerId(ev, 0);
1174 
+                final View toCapture = findTopChildUnder((int) x, (int) y);
1175 
+
1176 
+                saveInitialMotion(x, y, pointerId);
1177 
+
1178 
+                // Since the parent is already directly processing this touch
1179 
+                // event,
1180 
+                // there is no reason to delay for a slop before dragging.
1181 
+                // Start immediately if possible.
1182 
+                tryCaptureViewForDrag(toCapture, pointerId);
1183 
+
1184 
+                final int edgesTouched = mInitialEdgeTouched[pointerId];
1185 
+                if ((edgesTouched & mTrackingEdges) != 0) {
1186 
+                    mCallback.onEdgeTouched(edgesTouched & mTrackingEdges, pointerId);
1187 
+                }
1188 
+                break;
1189 
+            }
1190 
+
1191 
+            case MotionEventCompat.ACTION_POINTER_DOWN: {
1192 
+                final int pointerId = MotionEventCompat.getPointerId(ev, actionIndex);
1193 
+                final float x = MotionEventCompat.getX(ev, actionIndex);
1194 
+                final float y = MotionEventCompat.getY(ev, actionIndex);
1195 
+
1196 
+                saveInitialMotion(x, y, pointerId);
1197 
+
1198 
+                // A ViewDragHelper can only manipulate one view at a time.
1199 
+                if (mDragState == STATE_IDLE) {
1200 
+                    // If we're idle we can do anything! Treat it like a normal
1201 
+                    // down event.
1202 
+
1203 
+                    final View toCapture = findTopChildUnder((int) x, (int) y);
1204 
+                    tryCaptureViewForDrag(toCapture, pointerId);
1205 
+
1206 
+                    final int edgesTouched = mInitialEdgeTouched[pointerId];
1207 
+                    if ((edgesTouched & mTrackingEdges) != 0) {
1208 
+                        mCallback.onEdgeTouched(edgesTouched & mTrackingEdges, pointerId);
1209 
+                    }
1210 
+                } else if (isCapturedViewUnder((int) x, (int) y)) {
1211 
+                    // We're still tracking a captured view. If the same view is
1212 
+                    // under this
1213 
+                    // point, we'll swap to controlling it with this pointer
1214 
+                    // instead.
1215 
+                    // (This will still work if we're "catching" a settling
1216 
+                    // view.)
1217 
+
1218 
+                    tryCaptureViewForDrag(mCapturedView, pointerId);
1219 
+                }
1220 
+                break;
1221 
+            }
1222 
+
1223 
+            case MotionEvent.ACTION_MOVE: {
1224 
+                if (mDragState == STATE_DRAGGING) {
1225 
+                    final int index = MotionEventCompat.findPointerIndex(ev, mActivePointerId);
1226 
+                    final float x = MotionEventCompat.getX(ev, index);
1227 
+                    final float y = MotionEventCompat.getY(ev, index);
1228 
+                    final int idx = (int) (x - mLastMotionX[mActivePointerId]);
1229 
+                    final int idy = (int) (y - mLastMotionY[mActivePointerId]);
1230 
+
1231 
+                    dragTo(mCapturedView.getLeft() + idx, mCapturedView.getTop() + idy, idx, idy);
1232 
+
1233 
+                    saveLastMotion(ev);
1234 
+                } else {
1235 
+                    // Check to see if any pointer is now over a draggable view.
1236 
+                    final int pointerCount = MotionEventCompat.getPointerCount(ev);
1237 
+                    for (int i = 0; i < pointerCount; i++) {
1238 
+                        final int pointerId = MotionEventCompat.getPointerId(ev, i);
1239 
+                        final float x = MotionEventCompat.getX(ev, i);
1240 
+                        final float y = MotionEventCompat.getY(ev, i);
1241 
+                        final float dx = x - mInitialMotionX[pointerId];
1242 
+                        final float dy = y - mInitialMotionY[pointerId];
1243 
+
1244 
+                        reportNewEdgeDrags(dx, dy, pointerId);
1245 
+                        if (mDragState == STATE_DRAGGING) {
1246 
+                            // Callback might have started an edge drag.
1247 
+                            break;
1248 
+                        }
1249 
+
1250 
+                        final View toCapture = findTopChildUnder((int) x, (int) y);
1251 
+                        if (checkTouchSlop(toCapture, dx, dy)
1252 
+                                && tryCaptureViewForDrag(toCapture, pointerId)) {
1253 
+                            break;
1254 
+                        }
1255 
+                    }
1256 
+                    saveLastMotion(ev);
1257 
+                }
1258 
+                break;
1259 
+            }
1260 
+
1261 
+            case MotionEventCompat.ACTION_POINTER_UP: {
1262 
+                final int pointerId = MotionEventCompat.getPointerId(ev, actionIndex);
1263 
+                if (mDragState == STATE_DRAGGING && pointerId == mActivePointerId) {
1264 
+                    // Try to find another pointer that's still holding on to
1265 
+                    // the captured view.
1266 
+                    int newActivePointer = INVALID_POINTER;
1267 
+                    final int pointerCount = MotionEventCompat.getPointerCount(ev);
1268 
+                    for (int i = 0; i < pointerCount; i++) {
1269 
+                        final int id = MotionEventCompat.getPointerId(ev, i);
1270 
+                        if (id == mActivePointerId) {
1271 
+                            // This one's going away, skip.
1272 
+                            continue;
1273 
+                        }
1274 
+
1275 
+                        final float x = MotionEventCompat.getX(ev, i);
1276 
+                        final float y = MotionEventCompat.getY(ev, i);
1277 
+                        if (findTopChildUnder((int) x, (int) y) == mCapturedView
1278 
+                                && tryCaptureViewForDrag(mCapturedView, id)) {
1279 
+                            newActivePointer = mActivePointerId;
1280 
+                            break;
1281 
+                        }
1282 
+                    }
1283 
+
1284 
+                    if (newActivePointer == INVALID_POINTER) {
1285 
+                        // We didn't find another pointer still touching the
1286 
+                        // view, release it.
1287 
+                        releaseViewForPointerUp();
1288 
+                    }
1289 
+                }
1290 
+                clearMotionHistory(pointerId);
1291 
+                break;
1292 
+            }
1293 
+
1294 
+            case MotionEvent.ACTION_UP: {
1295 
+                if (mDragState == STATE_DRAGGING) {
1296 
+                    releaseViewForPointerUp();
1297 
+                }
1298 
+                cancel();
1299 
+                break;
1300 
+            }
1301 
+
1302 
+            case MotionEvent.ACTION_CANCEL: {
1303 
+                if (mDragState == STATE_DRAGGING) {
1304 
+                    dispatchViewReleased(0, 0);
1305 
+                }
1306 
+                cancel();
1307 
+                break;
1308 
+            }
1309 
+        }
1310 
+    }
1311 
+
1312 
+    private void reportNewEdgeDrags(float dx, float dy, int pointerId) {
1313 
+        int dragsStarted = 0;
1314 
+        if (checkNewEdgeDrag(dx, dy, pointerId, EDGE_LEFT)) {
1315 
+            dragsStarted |= EDGE_LEFT;
1316 
+        }
1317 
+        if (checkNewEdgeDrag(dy, dx, pointerId, EDGE_TOP)) {
1318 
+            dragsStarted |= EDGE_TOP;
1319 
+        }
1320 
+        if (checkNewEdgeDrag(dx, dy, pointerId, EDGE_RIGHT)) {
1321 
+            dragsStarted |= EDGE_RIGHT;
1322 
+        }
1323 
+        if (checkNewEdgeDrag(dy, dx, pointerId, EDGE_BOTTOM)) {
1324 
+            dragsStarted |= EDGE_BOTTOM;
1325 
+        }
1326 
+
1327 
+        if (dragsStarted != 0) {
1328 
+            mEdgeDragsInProgress[pointerId] |= dragsStarted;
1329 
+            mCallback.onEdgeDragStarted(dragsStarted, pointerId);
1330 
+        }
1331 
+    }
1332 
+
1333 
+    private boolean checkNewEdgeDrag(float delta, float odelta, int pointerId, int edge) {
1334 
+        final float absDelta = Math.abs(delta);
1335 
+        final float absODelta = Math.abs(odelta);
1336 
+
1337 
+        if ((mInitialEdgeTouched[pointerId] & edge) != edge || (mTrackingEdges & edge) == 0
1338 
+                || (mEdgeDragsLocked[pointerId] & edge) == edge
1339 
+                || (mEdgeDragsInProgress[pointerId] & edge) == edge
1340 
+                || (absDelta <= mTouchSlop && absODelta <= mTouchSlop)) {
1341 
+            return false;
1342 
+        }
1343 
+        if (absDelta < absODelta * 0.5f && mCallback.onEdgeLock(edge)) {
1344 
+            mEdgeDragsLocked[pointerId] |= edge;
1345 
+            return false;
1346 
+        }
1347 
+        return (mEdgeDragsInProgress[pointerId] & edge) == 0 && absDelta > mTouchSlop;
1348 
+    }
1349 
+
1350 
+    /**
1351 
+     * Check if we've crossed a reasonable touch slop for the given child view.
1352 
+     * If the child cannot be dragged along the horizontal or vertical axis,
1353 
+     * motion along that axis will not count toward the slop check.
1354 
+     *
1355 
+     * @param child Child to check
1356 
+     * @param dx    Motion since initial position along X axis
1357 
+     * @param dy    Motion since initial position along Y axis
1358 
+     * @return true if the touch slop has been crossed
1359 
+     */
1360 
+    private boolean checkTouchSlop(View child, float dx, float dy) {
1361 
+        if (child == null) {
1362 
+            return false;
1363 
+        }
1364 
+        final boolean checkHorizontal = mCallback.getViewHorizontalDragRange(child) > 0;
1365 
+        final boolean checkVertical = mCallback.getViewVerticalDragRange(child) > 0;
1366 
+
1367 
+        if (checkHorizontal && checkVertical) {
1368 
+            return dx * dx + dy * dy > mTouchSlop * mTouchSlop;
1369 
+        } else if (checkHorizontal) {
1370 
+            return Math.abs(dx) > mTouchSlop;
1371 
+        } else if (checkVertical) {
1372 
+            return Math.abs(dy) > mTouchSlop;
1373 
+        }
1374 
+        return false;
1375 
+    }
1376 
+
1377 
+    /**
1378 
+     * Check if any pointer tracked in the current gesture has crossed the
1379 
+     * required slop threshold.
1380 
+     * <p>
1381 
+     * This depends on internal state populated by
1382 
+     * {@link #shouldInterceptTouchEvent(MotionEvent)} or
1383 
+     * {@link #processTouchEvent(MotionEvent)}. You should only
1384 
+     * rely on the results of this method after all currently available touch
1385 
+     * data has been provided to one of these two methods.
1386 
+     * </p>
1387 
+     *
1388 
+     * @param directions Combination of direction flags, see
1389 
+     *                   {@link #DIRECTION_HORIZONTAL}, {@link #DIRECTION_VERTICAL},
1390 
+     *                   {@link #DIRECTION_ALL}
1391 
+     * @return true if the slop threshold has been crossed, false otherwise
1392 
+     */
1393 
+    public boolean checkTouchSlop(int directions) {
1394 
+        final int count = mInitialMotionX.length;
1395 
+        for (int i = 0; i < count; i++) {
1396 
+            if (checkTouchSlop(directions, i)) {
1397 
+                return true;
1398 
+            }
1399 
+        }
1400 
+        return false;
1401 
+    }
1402 
+
1403 
+    /**
1404 
+     * Check if the specified pointer tracked in the current gesture has crossed
1405 
+     * the required slop threshold.
1406 
+     * <p>
1407 
+     * This depends on internal state populated by
1408 
+     * {@link #shouldInterceptTouchEvent(MotionEvent)} or
1409 
+     * {@link #processTouchEvent(MotionEvent)}. You should only
1410 
+     * rely on the results of this method after all currently available touch
1411 
+     * data has been provided to one of these two methods.
1412 
+     * </p>
1413 
+     *
1414 
+     * @param directions Combination of direction flags, see
1415 
+     *                   {@link #DIRECTION_HORIZONTAL}, {@link #DIRECTION_VERTICAL},
1416 
+     *                   {@link #DIRECTION_ALL}
1417 
+     * @param pointerId  ID of the pointer to slop check as specified by
1418 
+     *                   MotionEvent
1419 
+     * @return true if the slop threshold has been crossed, false otherwise
1420 
+     */
1421 
+    public boolean checkTouchSlop(int directions, int pointerId) {
1422 
+        if (!isPointerDown(pointerId)) {
1423 
+            return false;
1424 
+        }
1425 
+
1426 
+        final boolean checkHorizontal = (directions & DIRECTION_HORIZONTAL) == DIRECTION_HORIZONTAL;
1427 
+        final boolean checkVertical = (directions & DIRECTION_VERTICAL) == DIRECTION_VERTICAL;
1428 
+
1429 
+        final float dx = mLastMotionX[pointerId] - mInitialMotionX[pointerId];
1430 
+        final float dy = mLastMotionY[pointerId] - mInitialMotionY[pointerId];
1431 
+
1432 
+        if (checkHorizontal && checkVertical) {
1433 
+            return dx * dx + dy * dy > mTouchSlop * mTouchSlop;
1434 
+        } else if (checkHorizontal) {
1435 
+            return Math.abs(dx) > mTouchSlop;
1436 
+        } else if (checkVertical) {
1437 
+            return Math.abs(dy) > mTouchSlop;
1438 
+        }
1439 
+        return false;
1440 
+    }
1441 
+
1442 
+    /**
1443 
+     * Check if any of the edges specified were initially touched in the
1444 
+     * currently active gesture. If there is no currently active gesture this
1445 
+     * method will return false.
1446 
+     *
1447 
+     * @param edges Edges to check for an initial edge touch. See
1448 
+     *              {@link #EDGE_LEFT}, {@link #EDGE_TOP}, {@link #EDGE_RIGHT},
1449 
+     *              {@link #EDGE_BOTTOM} and {@link #EDGE_ALL}
1450 
+     * @return true if any of the edges specified were initially touched in the
1451 
+     * current gesture
1452 
+     */
1453 
+    public boolean isEdgeTouched(int edges) {
1454 
+        final int count = mInitialEdgeTouched.length;
1455 
+        for (int i = 0; i < count; i++) {
1456 
+            if (isEdgeTouched(edges, i)) {
1457 
+                return true;
1458 
+            }
1459 
+        }
1460 
+        return false;
1461 
+    }
1462 
+
1463 
+    /**
1464 
+     * Check if any of the edges specified were initially touched by the pointer
1465 
+     * with the specified ID. If there is no currently active gesture or if
1466 
+     * there is no pointer with the given ID currently down this method will
1467 
+     * return false.
1468 
+     *
1469 
+     * @param edges Edges to check for an initial edge touch. See
1470 
+     *              {@link #EDGE_LEFT}, {@link #EDGE_TOP}, {@link #EDGE_RIGHT},
1471 
+     *              {@link #EDGE_BOTTOM} and {@link #EDGE_ALL}
1472 
+     * @return true if any of the edges specified were initially touched in the
1473 
+     * current gesture
1474 
+     */
1475 
+    public boolean isEdgeTouched(int edges, int pointerId) {
1476 
+        return isPointerDown(pointerId) && (mInitialEdgeTouched[pointerId] & edges) != 0;
1477 
+    }
1478 
+
1479 
+    private void releaseViewForPointerUp() {
1480 
+        mVelocityTracker.computeCurrentVelocity(1000, mMaxVelocity);
1481 
+        final float xvel = clampMag(
1482 
+                VelocityTrackerCompat.getXVelocity(mVelocityTracker, mActivePointerId),
1483 
+                mMinVelocity, mMaxVelocity);
1484 
+        final float yvel = clampMag(
1485 
+                VelocityTrackerCompat.getYVelocity(mVelocityTracker, mActivePointerId),
1486 
+                mMinVelocity, mMaxVelocity);
1487 
+        dispatchViewReleased(xvel, yvel);
1488 
+    }
1489 
+
1490 
+    private void dragTo(int left, int top, int dx, int dy) {
1491 
+        int clampedX = left;
1492 
+        int clampedY = top;
1493 
+        final int oldLeft = mCapturedView.getLeft();
1494 
+        final int oldTop = mCapturedView.getTop();
1495 
+        if (dx != 0) {
1496 
+            clampedX = mCallback.clampViewPositionHorizontal(mCapturedView, left, dx);
1497 
+            mCapturedView.offsetLeftAndRight(clampedX - oldLeft);
1498 
+        }
1499 
+        if (dy != 0) {
1500 
+            clampedY = mCallback.clampViewPositionVertical(mCapturedView, top, dy);
1501 
+            mCapturedView.offsetTopAndBottom(clampedY - oldTop);
1502 
+        }
1503 
+
1504 
+        if (dx != 0 || dy != 0) {
1505 
+            final int clampedDx = clampedX - oldLeft;
1506 
+            final int clampedDy = clampedY - oldTop;
1507 
+            mCallback
1508 
+                    .onViewPositionChanged(mCapturedView, clampedX, clampedY, clampedDx, clampedDy);
1509 
+        }
1510 
+    }
1511 
+
1512 
+    /**
1513 
+     * Determine if the currently captured view is under the given point in the
1514 
+     * parent view's coordinate system. If there is no captured view this method
1515 
+     * will return false.
1516 
+     *
1517 
+     * @param x X position to test in the parent's coordinate system
1518 
+     * @param y Y position to test in the parent's coordinate system
1519 
+     * @return true if the captured view is under the given point, false
1520 
+     * otherwise
1521 
+     */
1522 
+    public boolean isCapturedViewUnder(int x, int y) {
1523 
+        return isViewUnder(mCapturedView, x, y);
1524 
+    }
1525 
+
1526 
+    /**
1527 
+     * Determine if the supplied view is under the given point in the parent
1528 
+     * view's coordinate system.
1529 
+     *
1530 
+     * @param view Child view of the parent to hit test
1531 
+     * @param x    X position to test in the parent's coordinate system
1532 
+     * @param y    Y position to test in the parent's coordinate system
1533 
+     * @return true if the supplied view is under the given point, false
1534 
+     * otherwise
1535 
+     */
1536 
+    public boolean isViewUnder(View view, int x, int y) {
1537 
+        if (view == null) {
1538 
+            return false;
1539 
+        }
1540 
+        return x >= view.getLeft() && x < view.getRight() && y >= view.getTop()
1541 
+                && y < view.getBottom();
1542 
+    }
1543 
+
1544 
+    /**
1545 
+     * Find the topmost child under the given point within the parent view's
1546 
+     * coordinate system. The child order is determined using
1547 
+     * {@link me.imid.swipebacklayout.lib.ViewDragHelper.Callback#getOrderedChildIndex(int)}
1548 
+     * .
1549 
+     *
1550 
+     * @param x X position to test in the parent's coordinate system
1551 
+     * @param y Y position to test in the parent's coordinate system
1552 
+     * @return The topmost child view under (x, y) or null if none found.
1553 
+     */
1554 
+    public View findTopChildUnder(int x, int y) {
1555 
+        final int childCount = mParentView.getChildCount();
1556 
+        for (int i = childCount - 1; i >= 0; i--) {
1557 
+            final View child = mParentView.getChildAt(mCallback.getOrderedChildIndex(i));
1558 
+            if (x >= child.getLeft() && x < child.getRight() && y >= child.getTop()
1559 
+                    && y < child.getBottom()) {
1560 
+                return child;
1561 
+            }
1562 
+        }
1563 
+        return null;
1564 
+    }
1565 
+
1566 
+    private int getEdgeTouched(int x, int y) {
1567 
+        int result = 0;
1568 
+
1569 
+        if (x < mParentView.getLeft() + mEdgeSize)
1570 
+            result = EDGE_LEFT;
1571 
+        if (y < mParentView.getTop() + mEdgeSize)
1572 
+            result = EDGE_TOP;
1573 
+        if (x > mParentView.getRight() - mEdgeSize)
1574 
+            result = EDGE_RIGHT;
1575 
+        if (y > mParentView.getBottom() - mEdgeSize)
1576 
+            result = EDGE_BOTTOM;
1577 
+
1578 
+        return result;
1579 
+    }
1580 
+}

二进制
views/src/main/res/drawable/shadow_bottom.png
查看文件


二进制
views/src/main/res/drawable/shadow_left.png
查看文件


二进制
views/src/main/res/drawable/shadow_right.png
查看文件


+ 6 - 0
views/src/main/res/layout/swipeback_layout.xml
查看文件 

@@ -0,0 +1,6 @@
1 
+<?xml version="1.0" encoding="utf-8"?>
2 
+<com.android.views.swipebacklayout.SwipeBackLayout xmlns:android="http://schemas.android.com/apk/res/android"
3 
+    android:id="@+id/swipe"
4 
+    android:layout_width="match_parent"
5 
+    android:layout_height="match_parent" />
6 
+

+ 14 - 0
views/src/main/res/values/attrs.xml
查看文件 

@@ -73,4 +73,18 @@
73 73 
         </attr>
74 74 
     </declare-styleable>
75 75
76 
+    <declare-styleable name="SwipeBackLayout">
77 
+        <attr name="edge_size" format="dimension"/>
78 
+        <attr name="edge_flag">
79 
+            <enum name="left" value="0" />
80 
+            <enum name="right" value="1" />
81 
+            <enum name="bottom" value="2" />
82 
+            <enum name="all" value="3" />
83 
+        </attr>
84 
+        <attr name="shadow_left" format="reference"/>
85 
+        <attr name="shadow_right" format="reference"/>
86 
+        <attr name="shadow_bottom" format="reference"/>
87 
+    </declare-styleable>
88 
+
89 
+    <attr name="SwipeBackLayoutStyle" format="reference"/>
76 90 
 </resources>

+ 8 - 17
views/src/main/res/values/styles.xml
查看文件 

@@ -6,21 +6,12 @@
6 6 
         <item name="android:background">@color/line_bg</item>
7 7 
         <item name="android:layout_margin">2dp</item>
8 8 
     </style>
9 
-    <declare-styleable name="SwipeLayout">
10 
-        <attr name="drag_edge">
11 
-            <flag name="left" value="1" />
12 
-            <flag name="right" value="2" />
13 
-            <flag name="top" value="4" />
14 
-            <flag name="bottom" value="8" />
15 
-        </attr>
16 
-        <attr name="leftEdgeSwipeOffset" format="dimension" />
17 
-        <attr name="rightEdgeSwipeOffset" format="dimension" />
18 
-        <attr name="topEdgeSwipeOffset" format="dimension" />
19 
-        <attr name="bottomEdgeSwipeOffset" format="dimension" />
20 
-        <attr name="show_mode" format="enum">
21 
-            <enum name="lay_down" value="0" />
22 
-            <enum name="pull_out" value="1" />
23 
-        </attr>
24 
-        <attr name="clickToClose" format="boolean" />
25 
-    </declare-styleable>
9 
+
10 
+    <style name="SwipeBackLayout">
11 
+        <item name="edge_size">50dip</item>
12 
+        <item name="shadow_left">@drawable/shadow_left</item>
13 
+        <item name="shadow_right">@drawable/shadow_right</item>
14 
+        <item name="shadow_bottom">@drawable/shadow_bottom</item>
15 
+    </style>
16 
+
26 17 
 </resources>