Android - 如何接收广播意图ACTION_SCREEN_ON / OFF？

Question

 <application>
         <receiver android:name=".MyBroadcastReceiver" android:enabled="true">
                <intent-filter>
                      <action android:name="android.intent.action.ACTION_SCREEN_ON"></action>
                      <action android:name="android.intent.action.ACTION_SCREEN_OFF"></action>
                </intent-filter>
         </receiver>...    </application>

MyBroadcastReceiver设置只是为了向日志吐出foo。什么也没做。有什么建议吗？我是否需要分配任何权限来捕获意图？

Answer 1

我相信这些行为只能由在Java代码（via registerReceiver()）中注册的接收者接收，而不是通过清单中注册的接收者接收。

Answer 2

或者，您可以使用电源管理器来检测屏幕锁定。@Overrideprotected void onPause(){    super.onPause();    // If the screen is off then the device has been locked    PowerManager powerManager = (PowerManager) getSystemService(POWER_SERVICE);    boolean isScreenOn;    if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT_WATCH) {        isScreenOn = powerManager.isInteractive();    } else {        isScreenOn = powerManager.isScreenOn();    }    if (!isScreenOn) {        // The screen has been locked         // do stuff...    }}