StocksWidgetProvider.java

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

        for (int appWidgetId : appWidgetIds) {
            PendingIntent pendingIntent = TaskStackBuilder.create(context)
                    .addNextIntentWithParentStack(new Intent(context, MainActivity.class))
                    .addNextIntent(new Intent(context, DetailActivity.class))
                    .getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT);

            RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.widget_stocks);
            views.setRemoteAdapter(R.id.widget_list, new Intent(context, StocksWidgetRemoteViewsService.class));
            views.setPendingIntentTemplate(R.id.widget_list, pendingIntent);
            views.setEmptyView(R.id.widget_list, R.id.widget_empty);

            appWidgetManager.updateAppWidget(appWidgetId, views);
        }
    }