android亮屏、暗屏、解锁、关闭系统对话的监听事件

    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);    }
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