android亮屏、暗屏、解锁、关闭系统对话的监听事件

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 protected void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
     setContentView(R.layout.button_layuout);

     final IntentFilter filter = new IntentFilter();
     // 屏幕灭屏广播
     filter.addAction(Intent.ACTION_SCREEN_OFF);
     // 屏幕亮屏广播
     filter.addAction(Intent.ACTION_SCREEN_ON);
     // 屏幕解锁广播
     filter.addAction(Intent.ACTION_USER_PRESENT);
     // 当长按电源键弹出“关机”对话或者锁屏时系统会发出这个广播
     // example：有时候会用到系统对话框，权限可能很高，会覆盖在锁屏界面或者“关机”对话框之上，
     // 所以监听这个广播，当收到时就隐藏自己的对话，如点击pad右下角部分弹出的对话框
     filter.addAction(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);

     BroadcastReceiver mBatInfoReceiver = new BroadcastReceiver() {
         @Override
         public void onReceive(final Context context, final Intent intent) {
             Log.d(TAG, "onReceive");
             String action = intent.getAction();

             if (Intent.ACTION_SCREEN_ON.equals(action)) {
                 Log.d(TAG, "screen on");
             } else if (Intent.ACTION_SCREEN_OFF.equals(action)) {
                 Log.d(TAG, "screen off");
             } else if (Intent.ACTION_USER_PRESENT.equals(action)) {
                 Log.d(TAG, "screen unlock");
             } else if (Intent.ACTION_CLOSE_SYSTEM_DIALOGS.equals(intent.getAction())) {
                 Log.i(TAG, " receive Intent.ACTION_CLOSE_SYSTEM_DIALOGS");
             }
         }
     };
     Log.d(TAG, "registerReceiver");
     registerReceiver(mBatInfoReceiver, filter);
 }