Force Android widget to update

Question

I respond to a button press on my appwidget in the onreceive method. When the button I pressed, I want to force the widget to call the onupdate method. How do I accomplish t

Answer 1

Widget can't actually respond to clicks because it's not a separate process running. But it can start service to process your command:

public class TestWidget extends AppWidgetProvider {
  public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
        final int N = appWidgetIds.length;

        // Perform this loop procedure for each App Widget that belongs to this provider
        for (int i=0; i

You should also register the new service in your manifest file:

You can find another example of UpdateService implementation in Wiktionary sample in SDK

And here's another good approach Clickable widgets in android