How to update the activity from Service in Android

Question

I am learning Android. I have made a simple Activity then in the Activity start the Service that do some high network operation now I want when high network load call complete then I want to update to my Activity.

Is it possible to update the Activity from the Service ?

Thanks in advance.

use BroadcastRecievers http://developer.android.com/reference/android/content/BroadcastReceiver.html — Decoy, Aug 08 '14 at 19:45
Sorry, easier is actualey starting an intent to your activity — Decoy, Aug 08 '14 at 19:48
http://stackoverflow.com/questions/3606596/android-start-activity-from-service — Decoy, Aug 08 '14 at 19:48
@Deacoy How can you share a bit code to explain how your approach work ? — N Sharma, Aug 08 '14 at 19:49
@Deacoy My requirement is not to start the activity again from Service. I need to simply update the UI View of Activity — N Sharma, Aug 08 '14 at 19:51
@Deacoy lets suppose it is there. if its not there then I need to handle this case also. — N Sharma, Aug 08 '14 at 19:51
With the intent you can send data. Intent.putExtra(Whateveryouwant..) — Decoy, Aug 08 '14 at 19:53
I would look into using a ResultReceiver that you pass to the service via an intent. — Larry McKenzie, Aug 08 '14 at 19:54
@LarryMcKenzie How that works ? can you please share a bit code to explain your comment — N Sharma, Aug 08 '14 at 19:56
Hello Willian, care to explain a little more about your requirements? Or share a little bit of code? Thanks. — paulonogueira, Aug 08 '14 at 20:08
Have you saw this: https://developer.android.com/training/run-background-service/create-service.html (make sure you continue reading the following pages) — paulonogueira, Aug 08 '14 at 20:10

score 1 · Accepted Answer · answered Aug 08 '14 at 20:11

This is code taken and modified from a now depreciated library called DataDroid but it is relevant to what you are attempting to do.

private final class RequestReceiver extends ResultReceiver {

    RequestReceiver() {
        super(new Handler(Looper.getMainLooper()));

    }

    @Override
    public void onReceiveResult(int resultCode, Bundle resultData) {
        /*
         * Depending on how you implement this either update activity from here
         * or instantiate it with an interface that your activity implements and 
         * call that here. 
         */
    }
}

Create service with somethinglike this:

RequestReceiver requestReceiver = new RequestReceiver();

Intent i = new Intent(mContext, Service);
i.putExtra(RequestService.INTENT_EXTRA_RECEIVER, requestReceiver);
mContext.startService(i);

You could also just use the previously mentioned library and modify it to fit your current use case or use one of the many other similar libraries available.

How to update the activity from Service in Android

1 Answers1