java.lang.NoClassDefFoundError: com.app.VideoAlbumCustomBaseAdapter $ ViewHolder

Question

Fehler erhalten java.lang.NoClassDefFoundError, was kann die Ursache sein? ViewHolder ist bereits in der gleichen Java-Datei geschrieben,

VideoAlbumCustomBaseAdapter.JAVA

public class VideoAlbumCustomBaseAdapter extends BaseAdapter { 
    Context context; 
    List<VideoAlbumRowItem> rowItems; 

    public VideoAlbumCustomBaseAdapter(Context context, List<VideoAlbumRowItem> items) { 
     this.context = context; 
     this.rowItems = items; 
    } 
    private class ViewHolder { 
     ImageView imageView; 
     TextView txtNothing; 
     TextView txtSubtitle; 
     TextView txtTitle; 
    } 

    public View getView(int position, View convertView, ViewGroup parent) { 
     ViewHolder holder = null; 

     LayoutInflater mInflater = (LayoutInflater) 
       context.getSystemService(Activity.LAYOUT_INFLATER_SERVICE); 
     if (convertView == null) { 
      convertView = mInflater.inflate(R.layout.videoalbum_item,null);//ecology_list_item, null); 
      holder = new ViewHolder(); 
      holder.txtTitle = (TextView) convertView.findViewById(R.id.video_text); 
      holder.txtSubtitle = (TextView)convertView.findViewById(R.id.txtSubtitle); 
      holder.txtNothing = (TextView) convertView.findViewById(R.id.textView8); 
      holder.imageView = (ImageView) convertView.findViewById(R.id.video_list_img); 
      convertView.setTag(holder); 
     } else { 
      holder = (ViewHolder) convertView.getTag(); 
     } 
     VideoAlbumRowItem rowItem = (VideoAlbumRowItem) getItem(position); 
     holder.txtTitle.setText(rowItem.getTitle()); 
     holder.txtSubtitle.setText(rowItem.getSubtitle()); 
     holder.txtNothing.setText(rowItem.getNothing()); 
     holder.imageView.setImageResource(rowItem.getImageId()); 
     return convertView; 
    } 

    @Override 
    public int getCount() { 
     return rowItems.size(); 
    } 

    @Override 
    public Object getItem(int position) { 
     return rowItems.get(position); 
    } 

    @Override 
    public long getItemId(int position) { 
     return rowItems.indexOf(getItem(position)); 
    } 
} 

ERROR LOG:

E/AndroidRuntime: FATAL EXCEPTION: main 
Process: com.app, PID: 4164 
java.lang.NoClassDefFoundError: com.app.VideoAlbumCustomBaseAdapter$ViewHolder 
at com.app.VideoAlbumCustomBaseAdapter.getView(VideoAlbumCustomBaseAdapter.java:39) 
at android.widget.AbsListView.obtainView(AbsListView.java:2255) 
at android.widget.ListView.makeAndAddView(ListView.java:1790) 
at android.widget.ListView.fillDown(ListView.java:691) 
at android.widget.ListView.fillFromTop(ListView.java:752) 
at android.widget.ListView.layoutChildren(ListView.java:1630) 
at android.widget.AbsListView.onLayout(AbsListView.java:2087) 
at android.view.View.layout(View.java:14817) 
at android.view.ViewGroup.layout(ViewGroup.java:4631) 
at android.widget.RelativeLayout.onLayout(RelativeLayout.java:1055) 
at android.view.View.layout(View.java:14817) 
at android.view.ViewGroup.layout(ViewGroup.java:4631) 
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453) 
at android.widget.FrameLayout.onLayout(FrameLayout.java:388) 
at android.view.View.layout(View.java:14817) 
at android.view.ViewGroup.layout(ViewGroup.java:4631) 
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1671) 
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1525) 
at android.widget.LinearLayout.onLayout(LinearLayout.java:1434) 
at android.view.View.layout(View.java:14817) 
at android.view.ViewGroup.layout(ViewGroup.java:4631) 
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453) 
at android.widget.FrameLayout.onLayout(FrameLayout.java:388) 
at android.view.View.layout(View.java:14817) 
at android.view.ViewGroup.layout(ViewGroup.java:4631) 
at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:1983) 
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1740) 
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:996) 
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5600) 
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:761) 
at android.view.Choreographer.doCallbacks(Choreographer.java:574) 
at android.view.Choreographer.doFrame(Choreographer.java:544) 
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:747)at android.os.Handler.handleCallback(Handler.java:733) 
at android.os.Handler.dispatchMessage(Handler.java:95) 
at android.os.Looper.loop(Looper.java:136) 
at android.app.ActivityThread.main(ActivityThread.java:5001) 
at java.lang.reflect.Method.invokeNative(Native Method) 
at java.lang.reflect.Method.invoke(Method.java:515) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601) 
at dalvik.system.NativeStart.main(Native Method) 

Answer 1

machen Versuchen ViewHolder public und/oder static statt private.