How to launch activity from android home screen widget

Question

I am desperately trying to get my head wrapped around how to implement home screen widgets. Right now, I (finally) was able to get a button on my widget respond to a button

Answer 1

Well, your app widget should already have a PendingIntent that you tied to the button. Instead of a PendingIntent that triggers a BroadcastReceiver, have it be a PendingIntent that starts up an Activity.

Answer 2

You can use this code to solve your problem.

public class Widget extends AppWidgetProvider {

        // ...

        public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {

            for(int i = 0; i < appWidgetIds.length; i++){

                RemoteViews widget = new RemoteViews(context.getPackageName(), R.layout.widget);

                Intent startActivityIntent = new Intent(context, myActivity.class);
                PendingIntent startActivityPendingIntent = PendingIntent.getActivity(context, 0, startActivityIntent, PendingIntent.FLAG_UPDATE_CURRENT);
                widget.setPendingIntentTemplate(R.id.list_view, startActivityPendingIntent);

                appWidgetManager.updateAppWidget(appWidgetIds[i], widget);

                // ...
        }
    }

    public class WidgetAdapter implements RemoteViewsService.RemoteViewsFactory {

        // ...

        @Override
        public RemoteViews getViewAt(int position) {

        RemoteViews widgetRow = new RemoteViews(context.getPackageName(), R.layout.widget_row);

            Intent fillInIntent = new Intent();
            fillInIntent.putExtra(Widget.EXTRA_LIST_VIEW_ROW_NUMBER, position);
            widgetRow.setOnClickFillInIntent(R.id.list_view_row, fillInIntent);

            // ...

            return row;
        }
    }

Hope this helps!