安卓：发送用户位置服务器每15分钟只有位置已经改变？ [英] Android: Send user location to the server every 15 minutes only if the location has been changed?

问题描述

我的应用程序为用户提供位置相关的通知，这意味着我需要知道我的用户作为实时越好，不要把太多的压力对battery.I地点已经研究了一下，创建选项下面的列表

My app provides users location relevant notifications which means I need to be aware of my users' locations as real time as possible and not putting too much stress on battery.I have researched a bit and create the following list of option

• 部分激活锁定：它可以让​​屏幕超时而CPU保持执行的任务。但我只是想我的背景code至每n秒调用，检查是否有位置更新，如果该位置被改变然后将其发送给服务器。


• AlarmManager ：我可以用它来设计的重复任务，但不知道这是否会继续在后台运行无限期可以在用户故意杀害

• partial Wakelock: which lets the screen to timeout but CPU keeps executing task. But I just want my background code to be invoked every n seconds,check for location update,if the location is changed then send it to server.
• AlarmManager: I can use this to design recurring tasks but not sure if this will keep running in background indefinitely and can it be killed by users deliberately.

我想我的背景code每n秒，只要安装该应用程序用户的手机上调用。我要寻找答案，理论不是实际的code，因为我需要了解我在做什么。

I want my background code to be invoked every n seconds as long as the app is installed on user's phone. I am looking for theoretical answers not the actual code as I need to understand what I am doing.

推荐答案

哟可以使用服务类有：

public class StartService extends Service {

Timer timer = new Timer();
private final int TIME_INTERVAL = 10000;
GPSTracker GPSTracker;
Double latitude  ;
Double longitude ;



@Override
public IBinder onBind(Intent intent) {
    // TODO Auto-generated method stub
    return null;
}

@Override
public void onCreate() {
    // TODO Auto-generated method stub
    super.onCreate();
    GPSTracker = new GPSTracker(StartService.this);
}

@Override
public int onStartCommand(Intent intent, int flags, int startId) {
    // TODO Auto-generated method stub
    doTimerThings();
    return super.onStartCommand(intent, flags, startId);
}

private void doTimerThings() 
{
    timer.scheduleAtFixedRate(new TimerTask() {

        @SuppressLint("DefaultLocale")
        @TargetApi(Build.VERSION_CODES.GINGERBREAD)
        @Override
        public void run() {



            latitude = GPSTracker.getLatitude();
            longitude = GPSTracker.getLongitude();

            // you get the lat and lng , do your server stuff here-----

            System.out.println("lat------ "+latitude);
            System.out.println("lng-------- "+longitude);
        }

    }, 0, TIME_INTERVAL);

}




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


}

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