在这里,我试图确定屏幕是否打开,但按下电源锁定/解锁按钮时它似乎不起作用。应用程序正常工作,但 if-else 中的代码似乎没有效果。 现在编辑 了代码工作(感谢Olgun),但媒体播放器播放不会停止,并且每次打开/关闭屏幕时都会创建新的媒体播放器对象(多次播放)。
SCBroadcaster.java
public class SCBroadcaster extends BroadcastReceiver {
PowerManager pm;
MediaPlayer mp;
public static boolean wasScreenOn = true;
@Override
public void onReceive(Context arg0, Intent arg1) {
// TODO Auto-generated method stub
mp = MediaPlayer.create(arg0, R.raw.gale);
if (arg1.getAction().equals(Intent.ACTION_SCREEN_ON)) {
mp.stop();
mp.release();
Toast.makeText(arg0, "oNONONO", Toast.LENGTH_LONG).show();
} else if (arg1.getAction().equals(Intent.ACTION_SCREEN_OFF)) {
mp.start();
}
}
}
MainActivity.java
public class MainActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_OFF);
filter.addAction(Intent.ACTION_SCREEN_ON);
BroadcastReceiver bre = new SCBroadcaster();
registerReceiver(bre, filter);
}
protected void onPause() {
super.onPause();
if (SCBroadcaster.wasScreenOn) {
System.out.println("SCREEN TURNED OFF");
} else {
}
}
protected void onResume() {
super.onResume();
if (!SCBroadcaster.wasScreenOn) {
} else {
}
}
}