android屏幕加解锁事件广播的监听
想在程序中监听屏幕SCREEN_ON和SCREEN_OFF这两个action,实现屏幕锁定状态的监听,从而实现自己的相应功能。比较奇怪的是这两个action只能通过代码的形式注册才能被监听到,在AndroidManifest.xml中注册根本监听不到。去网上查了一下,原来是PowerManager那边在发这个广播的时候做了限制,限制只有register到代码中的receiver才能接收。特此记录!
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public class ScreenActionReceiver extends BroadcastReceiver {
private String TAG = "ScreenActionReceiver";
private boolean isRegisterReceiver = false;
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (action.equals(Intent.ACTION_SCREEN_ON)) {
Logcat.d(TAG, "屏幕解锁广播...");
} else if (action.equals(Intent.ACTION_SCREEN_OFF)) {
Logcat.d(TAG, "屏幕加锁广播...");
}
}
public void registerScreenActionReceiver(Context mContext) {
if (!isRegisterReceiver) {
isRegisterReceiver = true;
IntentFilter filter = new IntentFilter();
filter.addAction(Intent.ACTION_SCREEN_OFF);
filter.addAction(Intent.ACTION_SCREEN_ON);
Logcat.d(TAG, "注册屏幕解锁、加锁广播接收者...");
mContext.registerReceiver(ScreenActionReceiver.this, filter);
}
}
public void unRegisterScreenActionReceiver(Context mContext) {
if (isRegisterReceiver) {
isRegisterReceiver = false;
Logcat.d(TAG, "注销屏幕解锁、加锁广播接收者...");
mContext.unregisterReceiver(ScreenActionReceiver.this);
}
}
}
补充:移动开发 , Android ,