This is my WIdgetprover-Class:

    public class MyWidgetProvider2 extends AppWidgetProvider {

     private PendingIntent service = null;

        @Override
        public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds)
        {
            final AlarmManager m = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);

            final Calendar TIME = Calendar.getInstance();
            TIME.set(Calendar.MINUTE, 0);
            TIME.set(Calendar.SECOND, 0);
            TIME.set(Calendar.MILLISECOND, 0);

            final Intent i = new Intent(context.getApplicationContext(), UpdateWidgetService2.class);

            ComponentName thisWidget = new ComponentName(context,
                    MyWidgetProvider2.class);
            int[] allWidgetIds = appWidgetManager.getAppWidgetIds(thisWidget);

            i.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, allWidgetIds);

            if (service == null)
            {
                service = PendingIntent.getService(context, 0, i, PendingIntent.FLAG_CANCEL_CURRENT);
            }

            m.setRepeating(AlarmManager.RTC, TIME.getTime().getTime(), 1000 * 60 * 30, service);
        }

        @Override
        public void onDisabled(Context context)
        {
            final AlarmManager m = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);

            m.cancel(service);
        }
    }

And this the service that is getting called:


    package com.skyworxx.htwdd;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.util.Calendar;
import java.util.Locale;
import java.util.Random;




import android.app.PendingIntent;
import android.app.Service;
import android.appwidget.AppWidgetManager;
import android.content.ComponentName;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.IBinder;
import android.util.Log;
import android.view.View;
import android.widget.ImageView;
import android.widget.RemoteViews;
import android.widget.TextView;
import android.widget.Toast;

public class UpdateWidgetService2 extends Service {
    private static final String LOG = "example";

    @Override
    public void onStart(Intent intent, int startId) {
        Log.i(LOG, "Called");


        AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(this
                .getApplicationContext());

        int[] allWidgetIds = intent
                .getIntArrayExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS);

        ComponentName thisWidget = new ComponentName(getApplicationContext(),
                MyWidgetProvider2.class);
        int[] allWidgetIds2 = appWidgetManager.getAppWidgetIds(thisWidget);
        Log.w(LOG, "From Intent" + String.valueOf(allWidgetIds.length));
        Log.w(LOG, "Direct" + String.valueOf(allWidgetIds2.length));

        for (int widgetId : allWidgetIds) {
            // Create some random data
            int number = (new Random().nextInt(100));

            RemoteViews remoteViews = new RemoteViews(this.getApplicationContext().getPackageName(),
                    R.layout.widget_layout2);
            Log.w("WidgetExample", String.valueOf(number));

            worker w = new worker();
                w.execute("1", "2");


            appWidgetManager.updateAppWidget(widgetId, remoteViews);


        }
        stopSelf();

        super.onStart(intent, startId);
    }




    private class worker extends AsyncTask<String, Void, mahlzeit[]> {
        @Override
        protected mahlzeit[] doInBackground(String... params) {




             mahlzeit[] meals=new mahlzeit[8];



            URL url;
            try {

//doing the network stuff and save all the data in meals



            } catch (Exception e) {

                e.printStackTrace();

            }


            return meals;

        }

        @Override
        protected void onPostExecute(final mahlzeit[] meals) {




         remoteViews.setTextViewText(R.id.textView1,meals[0].getPreis());


        }


    }




    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }
}