How to update App Widget with list view from an Activity

Question

I know this has been asked for many times but I went through the documentation from top to bottom, read all answers here and none of them helped. To be honest, each answer says

Answer 1

I would say that notifyAppWidgetViewDataChanged method should work for you.

You have to build AppWidgetManager and get appWidgetIds and then just call notifyAppWidgetViewDataChanged on your AppWidgetManager.

Pseudo Code,

AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);
int appWidgetIds[] = appWidgetManager.getAppWidgetIds(
                           new ComponentName(context, WidgetProvider.class));
appWidgetManager.notifyAppWidgetViewDataChanged(appWidgetIds, R.id.listview);

For more, you can checkout my answer here which contains demo on github.