Question

I am developing an android app (only Widget) which displays some images from a remote location- say picasa or flickr.

So retrieving these images and preparing a bitmap from these resources is a long running task, for which i have written a service as suggested in android documentation.

I have developed this part and it is working fine.

The problem i am facing is with the Configuration Activity.
The Configuration Activity has a button. When you click on the button the configuration for the widget is saved.

Now what i want is when i click on the button ConfigActivity should be finished but at the same time there a call should be made to update the widget asynchronously.

Whats the best approach to do this.
– Should i make a call to onUpdate method of the WidgetProvider.
– Start AsyncTask in the activity
– Something else

Thanks

Answer 1

Start an AsyncTask and then call AppWidgetManager.updateAppWidget from that AsyncTask. See this for detail.