1 public class SampleActivity extends Activity {
2
3   private final Handler mLeakyHandler = new Handler() {
4     @Override
5     public void handleMessage(Message msg) {
6       // ...
7     }
8   }
9 }

 1 public class SampleActivity extends Activity {
 2
 3   private final Handler mLeakyHandler = new Handler() {
 4     @Override
 5     public void handleMessage(Message msg) {
 6       // ...
 7     }
 8   }
 9
10   @Override
11   protected void onCreate(Bundle savedInstanceState) {
12     super.onCreate(savedInstanceState);
13
14     // 延时10分钟发送一个消息
15     mLeakyHandler.postDelayed(new Runnable() {
16       @Override
17       public void run() { }
18     }, 60 * 10 * 1000);
19
20     // 返回前一个Activity
21     finish();
22   }
23 }

 1 public class SampleActivity extends Activity {
 2     /**
 3     * 匿名类的静态实例不会隐式持有他们外部类的引用
 4     */
 5     private static final Runnable sRunnable = new Runnable() {
 6             @Override
 7             public void run() {
 8             }
 9         };
10
11     private final MyHandler mHandler = new MyHandler(this);
12
13     @Override
14     protected void onCreate(Bundle savedInstanceState) {
15         super.onCreate(savedInstanceState);
16
17         // 延时10分钟发送一个消息.
18         mHandler.postDelayed(sRunnable, 60 * 10 * 1000);
19
20         // 返回前一个Activity
21         finish();
22     }
23
24     /**
25     * 静态内部类的实例不会隐式持有他们外部类的引用。
26     */
27     private static class MyHandler extends Handler {
28         private final WeakReference<SampleActivity> mActivity;
29
30         public MyHandler(SampleActivity activity) {
31             mActivity = new WeakReference<SampleActivity>(activity);
32         }
33
34         @Override
35         public void handleMessage(Message msg) {
36             SampleActivity activity = mActivity.get();
37
38             if (activity != null) {
39                 // ...
40             }
41         }
42     }
43 }