当我在睡眠模式下启动服务时,Android服务会立即调用OnDestroy

时间:2016-03-01 10:29:21

标签: android service wakelock sleep-mode

我使用BroadcastReceiver To:

  • 唤醒手机
  • 在服务中播放声音和振动
  • 显示Activity

Sleep mode

中的手机 时,我测试的每件事都运作良好

BUT

Sleep mode中的手机 时(手机已锁定且屏幕关闭),屏幕会亮起,Activity显示但< / strong>振动服务在OnDestroy之后立即转到onStartCommand

我的BroadcastReceiver:

public class TimerTimeoutBroadcastReceiver extends BroadcastReceiver {

    public void onReceive(Context context, Intent intent) {

        WakeLockManager.acquireWakeLock(context);

        Intent closeDialogs = new Intent(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);
        context.sendBroadcast(closeDialogs);

        // Open OffAlarm Activity
        StartAlarmOffActivity(context);

        //StartVibrationService
        StartVibrationService(context);
    }

    private void StartAlarmOffActivity(Context context) {
        Intent alarmeActivity = new Intent(context, AlarmScreenOffActivity.class);
        alarmeActivity.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        context.startActivity(alarmeActivity);
    }

    private void StartVibrationService(Context context) {
        Intent playAlarm = new Intent(context, AlarmSoundVibrationService.class);
        context.startService(playAlarm);
    }
}

振动服务:

@Override
public int onStartCommand(Intent intent, int flags, int startId) {
    if (intent == null) {
        stopSelf();
        return START_NOT_STICKY;
    }
    play();
    return START_STICKY;
}

@Override
public void onDestroy() {
    super.onDestroy();
    stop();


    WakeLockManager.releaseWakeLock();
}

在WakeLockManager中:

PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
mWakeLock = pm.newWakeLock(PowerManager.SCREEN_BRIGHT_WAKE_LOCK | PowerManager.ON_AFTER_RELEASE , "My Tag");

我的问题:

  • 如何在睡眠模式下启动服务时,如何阻止呼叫OnDestroy
  • 我应该使用通知来保持此服务的活跃吗?

修改1

我尝试通过通知将服务作为前台服务

private void showNotification() {

    CharSequence text = getText(R.string.alarm_vibration_service_started);

    // The PendingIntent to launch our activity if the user selects this notification
    PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
            new Intent(this, AlarmScreenOffActivity.class), 0);

    // Set the info for the views that show in the notification panel.
    Notification notification = null;

    if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.JELLY_BEAN) {

        notification = new Notification.Builder(this)
                .setSmallIcon(R.mipmap.ic_launcher)  // the status icon
                .setTicker(text)  // the status text
                .setWhen(System.currentTimeMillis())  // the time stamp
                .setContentTitle(getText(R.string.alarm_vibration_service_label)+" "+mTimerTitle)  // the label of the entry
                .setContentText(text)  // the contents of the entry
                .setContentIntent(contentIntent)  // The intent to send when the entry is clicked
                .build();
    }

    // Send the notification.
    startForeground(Alarm_Vibration_SERVICE_Id,  notification);
}

现在我在showNotification中致电onStartCommand,但它无法帮助我!

使用后我成功使用Thread.Sleep(10000) 之后的onStartCommand 中的Play(),我的手机振动了10秒钟。

代码:

private void play() {
    stop();
    mVibrator.vibrate(sVibratePattern, 0);

    enableTimeOut();

    mPlaying = true;
}

public void stop() {
    if (mPlaying) {
        mPlaying = false;
        mVibrator.cancel();
    }
    disableTimeOut();
}

private void enableTimeOut() {
    mHandler.sendMessageDelayed(
            mHandler.obtainMessage(TIMEOUT, true),
            1000 * ALARM_TIMEOUT_SECONDS);
}

在某些情况下,我也测试了以上代码。结果(振动10秒)是:

  
      
  • 失败:睡眠模式=&gt;倒计时Activity ----开始----&gt; TimerTimeoutBroadcastReceiver
  •   
  • 失败:睡眠模式=&gt; A Service ----开始----&gt; TimerTimeoutBroadcastReceiver
  •   
  • 失败:正常模式=&gt; A Service ----开始----&gt; TimerTimeoutBroadcastReceiver
  •   
  • 成功:正常模式=&gt;倒计时Activity ----开始----&gt; TimerTimeoutBroadcastReceiver
  •   

最后,我想从我的APP中的TimerTimeoutBroadcastReceiver开始Service,但这个问题让我很困惑!

1 个答案:

答案 0 :(得分:0)

问题解决了!我的服务(以及通知)确实有效,但我在onPause的{​​{1}}中有这些代码:

Activity

protected void onPause() { Intent playAlarm = new Intent(this, AlarmVibrationService.class); stopService(playAlarm); super.onPause(); } 在睡眠模式下打开后,它(onPause)就会发生!我现在不知道为什么会这样,但它会导致停止服务。现在我删除了上面的代码,问题解决了......