Question

我想在用户位置发生变化时通知用户。我通过＆＃34; FusedLocationApi.requestLocationUpdates ＆＃34;来监控用户的位置。

只要应用程序存在，一切正常。

但是当我轻扫/杀死该应用时，我不再收到任何通知。即使我杀了/轻扫应用程序，我该怎么做才能继续收到通知？

   @Override
public void onHandleIntent(Intent intent){

    googleApiClient = new GoogleApiClient.Builder(this)
            .addConnectionCallbacks(this)
            .addOnConnectionFailedListener(this)
            .addApi(LocationServices.API)
            .build();
    googleApiClient.connect();

    locationRequest = new LocationRequest();
    locationRequest.setInterval(2000);
    locationRequest.setFastestInterval(1000);
    locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
}


@Override
public void onConnected(Bundle bundle) {
    try{
        LocationServices.FusedLocationApi.requestLocationUpdates(googleApiClient, locationRequest, this);
    } catch (SecurityException ex){ex.printStackTrace();}
}

@Override
public void onLocationChanged(Location location) {
    this.location = location;
    handleLocationUpdate();
}

private void handleLocationUpdate(){
    NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(BackGroundService.this);
    mBuilder.setSmallIcon(R.mipmap.ic_launcher);
    mBuilder.setContentTitle(String.format(Locale.getDefault(),
            "Lat:%.2f Long:%.2f", location.getLatitude(), location.getLongitude()));
    mBuilder.setContentText("Hi, This is Android Notification Detail!");

    NotificationManager mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
    mNotificationManager.notify(1, mBuilder.build());
    //startForeground(1, mBuilder.build());
}

Answer 1

这将尝试通过刷出来保存您的服务免于杀戮。正如一些自定义rom杀死你的应用程序甚至你使用它

@Override
public int onStartCommand(Intent intent, int flags, int startId) {
    return Service.START_STICKY;
}

从任务中移除？好的，我会再次启动它

    @Override
public void onTaskRemoved(Intent rootIntent) {
    super.onTaskRemoved(rootIntent);
    Intent myIntent = new Intent(this, NotificationService.class);
    startService(myIntent)
}

被摧毁？

 @Override
public void onDestroy() {
    super.onDestroy();
    //startService(new Intent(getApplicationContext(), NotificationService.class));

    Intent myIntent = new Intent(this, NotificationService.class);

    PendingIntent pendingIntent = PendingIntent.getService(getApplicationContext(), 0, myIntent, 0);

    AlarmManager alarmManager1 = (AlarmManager) getSystemService(ALARM_SERVICE);

    Calendar calendar = Calendar.getInstance();

    calendar.setTimeInMillis(System.currentTimeMillis());

    calendar.add(Calendar.HOUR, 6);

    alarmManager1.set(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), pendingIntent);

}

Answer 2

您需要使用android服务或intentservice，具体取决于您想要做什么。然后，即使用户已经开始使用另一个应用程序，您也可以在背景幕中运行。

我认为您需要使用服务，因为您希望它继续在后台运行。 Intentservice只运行到操作结束。

她的一些阅读材料：

IntentService ， Services ， IntentService vs Serviceenter code here

Android，服务在刷卡/杀死应用程序时死亡

2 个答案: