android 如何监听系统休眠
时间: 2024-05-31 11:03:39 浏览: 139
在Android中,可以通过注册BroadcastReceiver来监听系统休眠事件。
首先,在AndroidManifest.xml文件中添加以下权限:
```xml
<uses-permission android:name="android.permission.WAKE_LOCK" />
```
然后,在你的Activity或Service中注册BroadcastReceiver,如下所示:
```java
public class MyActivity extends Activity {
private BroadcastReceiver mReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
if (Intent.ACTION_SCREEN_OFF.equals(intent.getAction())) {
// 系统进入休眠
} else if (Intent.ACTION_SCREEN_ON.equals(intent.getAction())) {
// 系统唤醒
}
}
};
@Override
protected void onResume() {
super.onResume();
IntentFilter filter = new IntentFilter();
filter.addAction(Intent.ACTION_SCREEN_OFF);
filter.addAction(Intent.ACTION_SCREEN_ON);
registerReceiver(mReceiver, filter);
}
@Override
protected void onPause() {
super.onPause();
unregisterReceiver(mReceiver);
}
}
```
在上面的代码中,我们注册了一个BroadcastReceiver,然后在onResume()方法中注册接收器,当屏幕关闭或打开时,接收器将会接收到相应的Intent,然后在onReceive()方法中处理相应的逻辑。最后,在onPause()方法中取消注册接收器。
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