One thing I’ve been grappling with recently is how to get home screen applications widgets to work for my application. There is a decent tutorial in the Android developer documents about the subject (located here), but it doesn’t really go into too much detail on how to make your widgets interactive. Sure, it shows you how to set up an OnClickListener on an element of your widget to load an activity from elsewhere, but what if you want the widget to do something more, like redraw itself with a new image when its clicked? This seems pretty simple, but to be honest, it took me a lot of fiddling to get it to happen.
