On Spinner OnSelect项目侦听器错误

Question

我有一个名为drpcat的Spinner。我收到了错误 11-27 19：42：00.923：E / ViewRootImpl（21825）：sendUserActionEvent（）mView == null

这是我的代码

 drpcat.setOnItemSelectedListener(new OnItemSelectedListener(){

        @Override
        public void onItemSelected(AdapterView<?> arg0, View arg1,
                int arg2, long arg3) {

             if(isdefaultcatselection) 
             {                     
                    isdefaultcatselection = false;
             } 
             else 
             {
                 category=drpcat.getSelectedItem().toString();

                loadmake();     

             }


        }



        @Override
        public void onNothingSelected(AdapterView<?> arg0) {
            // TODO Auto-generated method stub

        }});