update listview adapter внутри run on ui метод потока

Question

Я хочу обновить адаптер listview внутри run на ui thread.

Вот мой код:

@Override 
    public void addItem(final String data) { 
      runOnUiThread(new Runnable() { 
       @Override 
       public void run() {     
        list.setAdapter(new ListAdapter(MainActivity.this, data, width, height)); 


       } 
      }); 

    } 

теперь моя проблема в том, что этот код всегда генерирует исключение, и на самом деле я не почему и в чем причина исключения ..

Вот сведения об исключении:

12-17 14:48:13.241: E/AndroidRuntime(26289): FATAL EXCEPTION: main 
12-17 14:48:13.241: E/AndroidRuntime(26289): java.lang.NullPointerException 
12-17 14:48:13.241: E/AndroidRuntime(26289): at  android.widget.ListView.setupChild(ListView.java:1797) 
12-17 14:48:13.241: E/AndroidRuntime(26289): at android.widget.ListView.makeAndAddView(ListView.java:1775) 
12-17 14:48:13.241: E/AndroidRuntime(26289): at android.widget.ListView.fillDown(ListView.java:672) 
12-17 14:48:13.241: E/AndroidRuntime(26289): at android.widget.ListView.fillFromTop(ListView.java:732) 
12-17 14:48:13.241: E/AndroidRuntime(26289): at android.widget.ListView.layoutChildren(ListView.java:1625) 
12-17 14:48:13.241: E/AndroidRuntime(26289): at android.widget.AbsListView.onLayout(AbsListView.java:1863) 
12-17 14:48:13.241: E/AndroidRuntime(26289): at android.view.View.layout(View.java:11282) 
12-17 14:48:13.241: E/AndroidRuntime(26289): at android.view.ViewGroup.layout(ViewGroup.java:4224) 
12-17 14:48:13.241: E/AndroidRuntime(26289): at android.widget.RelativeLayout.onLayout(RelativeLayout.java:925) 
12-17 14:48:13.241: E/AndroidRuntime(26289): at android.view.View.layout(View.java:11282) 
12-17 14:48:13.241: E/AndroidRuntime(26289): at android.view.ViewGroup.layout(ViewGroup.java:4224) 
12-17 14:48:13.241: E/AndroidRuntime(26289): at android.widget.RelativeLayout.onLayout(RelativeLayout.java:925) 
12-17 14:48:13.241: E/AndroidRuntime(26289): at android.view.View.layout(View.java:11282) 
12-17 14:48:13.241: E/AndroidRuntime(26289): at android.view.ViewGroup.layout(ViewGroup.java:4224) 
12-17 14:48:13.241: E/AndroidRuntime(26289): at android.widget.FrameLayout.onLayout(FrameLayout.java:431) 
12-17 14:48:13.241: E/AndroidRuntime(26289): at android.view.View.layout(View.java:11282) 
12-17 14:48:13.241: E/AndroidRuntime(26289): at android.view.ViewGroup.layout(ViewGroup.java:4224) 
12-17 14:48:13.241: E/AndroidRuntime(26289): at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1628) 
12-17 14:48:13.241: E/AndroidRuntime(26289): at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1486) 
12-17 14:48:13.241: E/AndroidRuntime(26289): at android.widget.LinearLayout.onLayout(LinearLayout.java:1399) 
12-17 14:48:13.241: E/AndroidRuntime(26289): at android.view.View.layout(View.java:11282) 
12-17 14:48:13.241: E/AndroidRuntime(26289): at android.view.ViewGroup.layout(ViewGroup.java:4224) 
12-17 14:48:13.241: E/AndroidRuntime(26289): at android.widget.FrameLayout.onLayout(FrameLayout.java:431) 
12-17 14:48:13.241: E/AndroidRuntime(26289): at android.view.View.layout(View.java:11282) 
12-17 14:48:13.241: E/AndroidRuntime(26289): at android.view.ViewGroup.layout(ViewGroup.java:4224) 
12-17 14:48:13.241: E/AndroidRuntime(26289): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1514) 
12-17 14:48:13.241: E/AndroidRuntime(26289): at android.view.ViewRootImpl.handleMessage(ViewRootImpl.java:2467) 
12-17 14:48:13.241: E/AndroidRuntime(26289): at android.os.Handler.dispatchMessage(Handler.java:99) 
12-17 14:48:13.241: E/AndroidRuntime(26289): at android.os.Looper.loop(Looper.java:137) 
12-17 14:48:13.241: E/AndroidRuntime(26289): at android.app.ActivityThread.main(ActivityThread.java:4424) 
12-17 14:48:13.241: E/AndroidRuntime(26289): at java.lang.reflect.Method.invokeNative(Native Method) 
12-17 14:48:13.241: E/AndroidRuntime(26289): at java.lang.reflect.Method.invoke(Method.java:511) 
12-17 14:48:13.241: E/AndroidRuntime(26289): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784) 
12-17 14:48:13.241: E/AndroidRuntime(26289): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551) 
12-17 14:48:13.241: E/AndroidRuntime(26289): at dalvik.system.NativeStart.main(Native Method) 

Answer 1

я думаю адаптеры GetView() является проблемой

@Override 
public View getView(final int position, View convertView, ViewGroup parent) { 


    View view = convertView; 
    if (view == null) { 
     if (tf == null) { 
      tf = new FontsProperties(parent.getContext()).getNormalFont(); 
     } 
     LayoutInflater inflater = LayoutInflater.from(parent.getContext()); 
     view = inflater.inflate(R.layout.aminities_item, parent, false); 
     ChildHolder holder = new ChildHolder(); 
     holder.chkBox = (CheckBox) view.findViewById(R.id.chkBox); 

     view.setTag(holder); 
    } 
    ChildHolder holder = (ChildHolder) view.getTag(); 
    holder.txtTitle.setText(items.get(position).getItem().getText(parent.getContext())); 
    holder.chkBox.setChecked(items.get(position).isSelected()); 

    holder.linParent.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      items.get(position).setSelected(!items.get(position).isSelected()); 
      notifyDataSetChanged(); 
     } 
    }); 

    return view;