Android亮屏、暗屏、解鎖、關閉系統對話的監聽事件

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

    final IntentFilter filter = new IntentFilter();
    // 屏幕滅屏廣播
    filter.addAction(Intent.ACTION_SCREEN_OFF);
    // 屏幕亮屏廣播
    filter.addAction(Intent.ACTION_SCREEN_ON);
    // 屏幕解鎖廣播
    filter.addAction(Intent.ACTION_USER_PRESENT);
    // 當長按電源鍵彈出“關機”對話或者鎖屏時系統會發出這個廣播
    // example：有時候會用到系統對話框，權限可能很高，會覆蓋在鎖屏界面或者“關機”對話框之上，
    // 所以監聽這個廣播，當收到時就隱藏自己的對話，如點擊pad右下角部分彈出的對話框
    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);
}