private void update() {
        AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(this.context);
        if (this.componentName != null) {
            appWidgetManager.updateAppWidget(this.componentName, this.remoteViews);
        } else {
            appWidgetManager.updateAppWidget(this.widgetIds, this.remoteViews);
        }
    }
Updates the AppWidget after the ImageView has loaded the Bitmap.
core/src/main/java/com/bumptech/glide/request/target/AppWidgetTarget.java