نمایش تصویر تصادفی در ویجت

با سلام و خسته نباشيد . من ازين کد براي نمايش تصوير تصادفي در ويجت استفاده مي کنم.اما متاسفانه هيچ اتفاقي نميوفته.ممنون ميشم راهنمايي کنيد.

  package ir.akbar.widget;
/**
 * Created by Akbar on 09/02/2016.
 */

import android.app.PendingIntent;
import android.appwidget.AppWidgetManager;
import android.appwidget.AppWidgetProvider;
import android.content.Context;
import android.content.Intent;
import java.util.Random;
import android.R.drawable;
import android.app.Activity;
import android.content.res.Resources;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.RemoteViews;

public class ExampleAppWidgetProvider extends AppWidgetProvider {
    int max = 16;
    int score = 0;
    String imgName;
    Random rand = new Random();

    String uri = "@drawable/img1.png";


    public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
        super.onUpdate(context, appWidgetManager, appWidgetIds);
        final int N = appWidgetIds.length;

        Log.i("ExampleWidget", "Updating widgets ");
        
        for (int i = 0; i < appWidgetIds.length; i++) {
            Random r = new Random();
            int min = 1;
            int max = 721;
            int id3 = r.nextInt(max) + min;
            int id2 = id3 - 1;
            Resources res = context.getResources();

            int rndN = rand.nextInt(5) + 1;
            String imgName = "img" + rndN;;
            int id = context.getResources().getIdentifier(imgName, "drawable", context.getPackageName());
            if (id == id) {
                id = context.getResources().getIdentifier(imgName, "drawable", context.getPackageName());
                id2 = id3 - 1;
            }
            int appWidgetId = appWidgetIds;
            Intent intent = new Intent(context, MainActivity.class);
            PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, intent, 0);
            RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.widget1);
            views.setImageViewResource(R.id.image_in_widget, id);
            appWidgetManager.updateAppWidget(appWidgetId, views);
        }
    }


}