RecipeIngredientWidget.java

public class RecipeIngredientWidget extends AppWidgetProvider {

    @Inject
    PreferenceRepository prefRepo;

    public static void updateAppWidget(Context context, AppWidgetManager appWidgetManager, int appWidgetId, Recipe recipe) {
        RemoteViews remoteViews = new RemoteViews(context.getPackageName(),
                R.layout.recipe_ingredient_widget);

        // launch app when button is clicked
        Intent appOpenIntent = new Intent(context, RecipeActivity.class);
        PendingIntent addIngredientPi = PendingIntent.getActivity(context, 0, appOpenIntent, PendingIntent.FLAG_UPDATE_CURRENT);
        remoteViews.setOnClickPendingIntent(R.id.btnAddIngredient, addIngredientPi);

        Intent listViewIntent = new Intent(context, IngredientListWidgetService.class);
        listViewIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
        listViewIntent.setData(Uri.parse(listViewIntent.toUri(Intent.URI_INTENT_SCHEME)));
        remoteViews.setRemoteAdapter(R.id.lvRecipeIngredient, listViewIntent);

        setViews(context, remoteViews, appWidgetId, recipe);

        // Instruct the widget manager to update the widget
        appWidgetManager.updateAppWidget(appWidgetId, remoteViews);
    }

    private static void setViews(Context context, RemoteViews remoteViews, int appWidgetId, Recipe recipe) {
        remoteViews.setTextViewText(R.id.tvRecipeName, recipe.getName());
        AppWidgetTarget appWidgetTarget = new AppWidgetTarget(context, R.id.ivRecipe, remoteViews, appWidgetId) {
            @Override
            public void onResourceReady(@NonNull Bitmap resource, Transition<? super Bitmap> transition) {
                super.onResourceReady(resource, transition);
            }
        };

        GlideApp.with(context.getApplicationContext())
                .asBitmap()
                .load(recipe.getImageId())
                .into(appWidgetTarget);
    }

    @Override
    public void onReceive(Context context, Intent intent) {
        AndroidInjection.inject(this, context);
        super.onReceive(context, intent);
    }

    @Override
    public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
        // There may be multiple widgets active, so update all of them
        for (int appWidgetId : appWidgetIds) {
            Recipe recipe = prefRepo.getIngredientsWidgetRecipe(appWidgetId);
            if (recipe == null) continue;
            updateAppWidget(context, appWidgetManager, appWidgetId, recipe);
        }
        super.onUpdate(context, appWidgetManager, appWidgetIds);
    }

    @Override
    public void onDeleted(Context context, int[] appWidgetIds) {
        for (int appWidgetId : appWidgetIds)
            prefRepo.deleteIngredientsWidgetRecipe(appWidgetId);
    }
}