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public class SampleActivity extends Activity {private final Handler mHandler = new Handler() {@Overridepublic void handleMessage(Message msg) {// ... }}
}

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public class SampleActivity extends Activity {private final Handler mHandler = new Handler() {@Overridepublic void handleMessage(Message msg) {// ...}}@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);// 发送一个10分钟后执行的一个消息mHandler.postDelayed(new Runnable() {@Overridepublic void run() { }}, 600000);// 结束当前的Activityfinish();}
}

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public class SampleActivity extends Activity {/**
   * 使用静态的内部类，不会持有当前对象的引用
   */private static class MyHandler extends Handler {private final WeakReference<SampleActivity> mActivity;public MyHandler(SampleActivity activity) {mActivity = new WeakReference<SampleActivity>(activity);}@Overridepublic void handleMessage(Message msg) {SampleActivity activity = mActivity.get();if (activity != null) {// ...}}}private final MyHandler mHandler = new MyHandler(this);/**
   * 使用静态的内部类，不会持有当前对象的引用
   */private static final Runnable sRunnable = new Runnable() {@Overridepublic void run() { }};@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);//  发送一个10分钟后执行的一个消息mHandler.postDelayed(sRunnable, 600000);// 结束finish();}
}

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 final Class<? extends Handler> klass = getClass();if ((klass.isAnonymousClass() || klass.isMemberClass() || klass.isLocalClass()) &&(klass.getModifiers() & Modifier.STATIC) == 0) {Log.w(TAG, "The following Handler class should be static or leaks might occur: " +klass.getCanonicalName());