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

This is kinda crude, but it works rather well for me, as I've found no directly-implemented way to force an update.

public class Foo extends AppWidgetManager {
   public static Foo Widget = null;
   public static Context context;
   public static AppWidgetManager AWM;
   public static int IDs[];

   public void onUpdate(Context context, AppWidgetManager AWM, int IDs[]) {
      if (null == context) context = Foo.context;
      if (null == AWM) AWM = Foo.AWM;
      if (null == IDs) IDs = Foo.IDs;

      Foo.Widget = this;
      Foo.context = context;
      Foo.AWM = AWM;
      Foo.IDs = IDs;
.......
   }
}

Now, anywhere I want to force the widget to update, it's as simple as:

if (null != Foo.Widget) Foo.Widget.onUpdate(null, null, null);