Stop the background service after particular time in android

问题

Hi i need to stop the Background service which is already started after particular time.I will get the duration from server for when to stop the service.I have tried the Alarm Manager in android.

        Calendar cal = Calendar.getInstance();

        Intent intent = new Intent(context, MyService.class);
        PendingIntent pintent = PendingIntent.getService(context, 0, intent, 0);

        AlarmManager alarm = (AlarmManager)context.getSystemService(Context.ALARM_SERVICE);
        // Start every 30 seconds
        alarm.setRepeating(AlarmManager.RTC_WAKEUP, cal.getTimeInMillis(), 60*1000, pintent);
        Log.e(TAG, "Service started in Activity");

This above code is starting the service after every one minute.But i dont want to start the service.I need to stop the service after a minute.How to do that.Is that possible to do with Alarm Manager.Please guide me.

回答1:

Try that:

add parameter to your pendingIntent

Intent intent = new Intent(context, MyService.class);
intent.putExtra("param_name", "end");
PendingIntent pintent = PendingIntent.getService(context, 0, intent, 0);

Override onStartCommand() method in your Service

@Override
public int onStartCommand(Intent intent, int flags, int startId) {
    try{
        String parameter = intent.getStringExtra("param_name");
        if(parameter.equals("end")){
            stopSelf();
        }
    }catch(Exception ex){
    }
}

Also you can try to use Handler in your service:

Handler variable:

private Handler handler = new Handler() {

    @Override
    public void handleMessage(Message msg) {
        switch (msg.what) {
            case 1: {
                stopSelf();
            }break;
        }
    }
}

Delayed task:

handler.sendEmptyMessageDelayed(1, 60 * 1000);

回答2:

Create the timer task to stop the service and assign the delay time which you are getting from your server

Timer timer = new Timer ();
TimerTask hourlyTask = new TimerTask () {
   @Override
   public void run () {
       // your code here to stop the service ...
   }
 };

// schedule the task to run assign the time (DelayTime) which you are getting from server

timer.schedule (hourlyTask, DelayTime);

回答3:

So what is the particular time.

You can do 1 thing make note of the starting time of the service. and if you want to stop the service after a specified duration or the specific time get the system current time compare it with that time if it match's stop the service. this should resolve the problem.

Tell me if it works for you.. ======> Just Follow the steps provided steps below:

Use sharedprefrence to save the start time of the service.
If your not familiar to shearedprefrence URL:http://examples.javacodegeeks.com/android/core/content/android-sharedpreferences-example/
Then in the service onStart method get the system current time if it matches the time stop the service.

回答4:

You have to create an broadcast receiver:

Calendar cal = Calendar.getInstance(); // this will return current time

 // if you want to trigger after 1 minute then add into calender object

 cal.add(Calendar.MINUTE, 1);

Intent intentAlarm = new Intent(this, AlarmReciever.class);
intentAlarm.setAction("My_Action");
AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
PendingIntent pendingIntent = PendingIntent.getBroadcast(
                MainActivity.this, REQUEST_CODE, intentAlarm,
                PendingIntent.FLAG_UPDATE_CURRENT);
// set the alarm for particular time
alarmManager.set(AlarmManager.RTC_WAKEUP, cal.getTimeInMillis(), pendingIntent);

AlarmReciever .java

public class AlarmReciever extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {

     //  call method to stop service 

    }
}

Also declare this AlarmReceiver class in menifest file

 <receiver android:name=".AlarmReciever" >

    </receiver>

来源：https://stackoverflow.com/questions/21569769/stop-the-background-service-after-particular-time-in-android

标签

android

time

android-service

alarmmanager