AsyncTask导致FC研究(3)

    } 
     
    protected void onStart () { 
        super.onStart(); 
        new GetGridDataTask().execute(null);//执行获取数据的任务  
    } 
     
     
     
     
    @Override 
    protected Dialog onCreateDialog(int id) { 
        switch (id) { 
        case DIALOG_PROGRESS: 
            mProgressDialog = new ProgressDialog(ActivityA.this); 
            mProgressDialog.setMessage("正在获取数据"); 
            mProgressDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER); 
 
            return mProgressDialog; 
 
        
        } 
        return null; 
    } 
 
    class CustomAdapter extends BaseAdapter { 
 
         
        CustomAdapter() { 
             
        } 
         
        @Override 
        public int getCount() { 
            return mData.size(); 
        } 
 
        @Override 
        public Object getItem(int position) { 
            return mData.get(position); 
        } 
 
        @Override 
        public long getItemId(int position) { 
            return 0; 
        } 
 
        @Override 
        public View getView(int position, View convertView, ViewGroup parent) {