解决方法是通过使用WakefulBroadcastReceiver来注册广播并请求唤醒锁定，以便在设备处于睡眠模式下将屏幕点亮。具体代码如下：

public class MyFirebaseMessagingService extends FirebaseMessagingService {
  private static final String TAG = "MyFirebaseMsgService";
 
  @Override
  public void onMessageReceived(RemoteMessage remoteMessage) {
    // ...
    PowerManager powerManager = (PowerManager) getSystemService(POWER_SERVICE);
    PowerManager.WakeLock wakeLock = powerManager.newWakeLock(
            PowerManager.PARTIAL_WAKE_LOCK,
            "MyWakelockTag");
 
    wakeLock.acquire(10*60*1000L /*10 minutes*/);
 
    // Go to the activity that displays the message
    Intent intent = new Intent(this, MessageActivity.class);
    intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    intent.putExtra("message", messageBody);
 
    startActivity(intent);
    // ...
    wakeLock.release();
  }
}
 
public class MyWakefulReceiver extends WakefulBroadcastReceiver {
 
  @Override
  public void onReceive(Context context, Intent intent) {
    PowerManager.WakeLock wakeLock = ((PowerManager) context.getSystemService(POWER_SERVICE)).newWakeLock(
            PowerManager.PARTIAL_WAKE_LOCK,
            "MyWakelockTag");
    wakeLock.acquire();
    // Release the lock when the service is done doing its work
    Intent service = new Intent(context, MyFirebaseMessagingService.class);
    startWakefulService(context, service);
    wakeLock.release();
  }
}