Execute web service on background every

Question

I need to execute web service every Hour in the background

Every hour, will check if Internet is available then execute a web service and update data.

How can I do this?

My background service

public class MyService extends Service {

   String tag="TestService";
   @Override
   public void onCreate() {
       super.onCreate();
       Toast.makeText(this, "Service created...", Toast.LENGTH_LONG).show();      
       Log.i(tag, "Service created...");
   }

   @Override
   public void onStart(Intent intent, int startId) {      
       super.onStart(intent, startId);  
       if(isInternet)
       {
           AsyTask web= new AsyTask();
           web.execute();
       }
       Log.i(tag, "Service started...");
   }
   @Override
   public void onDestroy() {
       super.onDestroy();
       Toast.makeText(this, "Service destroyed...", Toast.LENGTH_LONG).show();
   }

   @Override
   public IBinder onBind(Intent intent) {
       return null;

   }

What have you tried? show your code. In short, just use `AlarmManager` that is called every hour — iTech, Jun 14 '14 at 05:56
you have to use service and set timer in onStart method of service and call webservice in that — MFP, Jun 14 '14 at 05:57
I am making service but dont know how i can execute every hour — user3722005, Jun 14 '14 at 06:01

Shivam Verma · Accepted Answer · 2014-06-14T08:49:03.787

3

The idea would be to use the AlarmManager to start a background service every hour.

Setup Alarm Manager to start a background service every 60 minutes. This can be done in any of the activities.

    startServiceIntent = new Intent(context,
            WebService.class);
    startWebServicePendingIntent = PendingIntent.getService(context, 0,
            startServiceIntent, 0);

    alarmManager = (AlarmManager) context
            .getSystemService(Context.ALARM_SERVICE);
    alarmManager.setRepeating(AlarmManager.RTC_WAKEUP,
            System.currentTimeMillis(), 60*1000*60,
            startWebServicePendingIntent);

Create a class WebService which extends Service then add the method to sync data with the server inside the onStartCommand() method of the Service. Also, do not forget to declare the service in the manifest.

Edit 1 :

public class WebService extends Service {

   String tag="TestService";
   @Override
   public void onCreate() {
       super.onCreate();
       Toast.makeText(this, "Service created...", Toast.LENGTH_LONG).show();      
       Log.i(tag, "Service created...");
   }

   @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
       super.onStart(intent, startId);  
       if(isInternet)
       {
           AsyTask web= new AsyTask();
           web.execute();
       }
       Log.i(tag, "Service started...");
   }
   @Override
   public void onDestroy() {
       super.onDestroy();
       Toast.makeText(this, "Service destroyed...", Toast.LENGTH_LONG).show();
   }

   @Override
   public IBinder onBind(Intent intent) {
       return null;

   }

edited Jun 14 '14 at 08:49

answered Jun 14 '14 at 06:01

Shivam Verma

7,973
3
26
34

How can use this in service – user3722005 Jun 14 '14 at 06:38
You'll add this code inside the MainActivity of your application so that whenever the app is started, Alarm manager sets this repeating alarm. – Shivam Verma Jun 14 '14 at 07:27
then how i connected this code through service class – user3722005 Jun 14 '14 at 07:29
You are connecting it through the PendingIntent (startWebServicePendingIntent above) which uses the Intent(startServiceIntent) which starts the service(WebService.class) – Shivam Verma Jun 14 '14 at 07:52
I am new in android so i am not understanding please provide same code or edit my service class – user3722005 Jun 14 '14 at 08:04
Add the code that I've mentioned in my answer to the onCreate Method of your main activity. Rename MyService to WebService. Also, check Edit 1 of my answer. – Shivam Verma Jun 14 '14 at 08:47
If MainActivity destroyed by system(when it is in the background for long time) then what will happen? Is it call or not? – Avishek Das Sep 05 '16 at 09:25

score 0 · Answer 2 · answered Jun 14 '14 at 06:09

0

add you code of calling webservice inside run method of timer task just like below

Timer timer = new Timer();
timer.schedule(new TimerTask() {
public void run() {
   if(isInternet)
   {
       AsyTask web= new AsyTask();
       web.execute();
   }
   Log.i(tag, "Service started...");
}
}, 0, 3600000);

answered Jun 14 '14 at 06:09

MFP

1,141
9
22

Thanks for answering but AlarmManger is best or Timer ? – user3722005 Jun 14 '14 at 06:13
i have used this, and it is working fine. so you can use this. – MFP Jun 14 '14 at 06:15
i think AlaramMAnger is a long way, if we can do same thing easly with timer, so we should use this. – MFP Jun 14 '14 at 06:18

Execute web service on background every

2 Answers2