Problem mit App zu Widget-Transformation

package widget.dgoetz.nlesson;




import android.app.PendingIntent;
import android.appwidget.AppWidgetManager;
import android.appwidget.AppWidgetProvider;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.RemoteViews;
import android.widget.TextView;


public class NextLessonWidget extends AppWidgetProvider {
	/** Called when the activity is first created. */
	
	
	
	
	
	public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
    	final int N = appWidgetIds.length;
    	// Perform this loop procedure for each App Widget that belongs to this provider
    	for (int i=0; i<N; i++) {
        	int appWidgetId = appWidgetIds[i];
        	
        	// Create an Intent to launch ExampleActivity
        	NextLessActivity n = new NextLessActivity();
 	
        	Intent intent = new Intent(context, NextLessActivity.class);
        	PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, intent, 0);


        	// Get the layout for the App Widget and attach an on-click listener
        	// to the button
        	RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.main);
        	views.setTextViewText(R.id.textView1, n.getNextLesson());
        	// views.setOnClickPendingIntent(R.id.expandableListView1, pendingIntent);
        	views.setOnClickPendingIntent(R.id.button1, pendingIntent);
        	// Tell the AppWidgetManager to perform an update on the current app widget
        	appWidgetManager.updateAppWidget(appWidgetId, views);
    	}
	}
}

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="widget.dgoetz.nlesson"
android:versionCode="1"
android:versionName="1.0" >


<uses-sdk android:minSdkVersion="13" />


<application
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name" >
            
            <receiver android:name=".NextLessonWidget" >
    <intent-filter>
    <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
</intent-filter>
<meta-data android:name="android.appwidget.provider"
              android:resource="@layout/widget_provider" />
</receiver>
            
            <category android:name="android.intent.category.LAUNCHER" />


</application>


</manifest>