方向变化时图像为空？

Question

我想问为什么我的网格视图无法显示图像后方向图

我已经设置onConfigurationChange（）和onRetainNonCofigurationInstance（）但没有解决我的问题。

这是我的代码：

public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.category_layout); 

    data = getLastNonConfigurationInstance(); 

    setUpView(); 


} 

private void setUpView() { 
    gridview = (GridView) findViewById(R.id.gridlayout); 
    if(data == null){ 
     imageGridViewAdapter = new ImageGridViewAdapter(this, category, image_category); 
    } 
    else{ 
     imageGridViewAdapter = (ImageGridViewAdapter) data; 
    } 
    gridview.setAdapter(imageGridViewAdapter); 

    gridview.setOnItemClickListener(new OnItemClickListener() { 

     public void onItemClick(AdapterView<?> arg0, View arg1, 
       final int arg2, long arg3) { 

      if (subCategory[arg2].length > 1) { 
       AlertDialog.Builder builder = new AlertDialog.Builder(
         CategoryActivity.this); 
       builder.setTitle(category[arg2]); 
       builder.setItems(subCategory[arg2], 
         new DialogInterface.OnClickListener() { 
          public void onClick(DialogInterface dialog, 
            int item) { 
           linkNewsCategory(arg2, item); 
          } 
         }); 
       builder.show(); 
      } else { 
       linkNewsCategory(arg2, 0); 
      } 

     } 

    }); 
} 

@Override 
public void onConfigurationChanged(Configuration newConfig) { 
     super.onConfigurationChanged(newConfig); 
     setUpView(); 
} 



@Override 
public ImageGridViewAdapter onRetainNonConfigurationInstance() { 
    ImageGridViewAdapter a = new ImageGridViewAdapter(this, category, image_category); 
    return a; 
} 

它是不是在GridView的错误吗？

Answer 1

终于我有找到解决办法.. 我有错误的适配器而设定的图像和文字..

这个我的老getView（）：

public View getView(int position, View convertView, ViewGroup parent) { 
    ViewHolder holder; 
    if (convertView == null) { 
     v = mInflater.inflate(R.layout.category, null); 
     holder = new ViewHolder(); 
     holder.category_title = (TextView) v.findViewById(R.id.text); 
     holder.category_image = (ImageView) v.findViewById(R.id.image); 
     v.setTag(holder); 
    } else{ 
     holder = (ViewHolder) v.getTag(); 
    } 

    holder.category_title.setText(data[position]); 
    holder.category_image.setImageResource(image[position]); 

    return v; 
} 

我这一个改变：

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

    v = convertView; 
    if(convertView == null){ 
     LayoutInflater li = activity.getLayoutInflater(); 
     v = li.inflate(R.layout.category, null); 

     category_title = (TextView) v.findViewById(R.id.text); 
     category_title.setText(data[position]); 

     category_image = (ImageView) v.findViewById(R.id.image); 
     category_image.setImageResource(image[position]); 

    } 
    return v; 
} 

现在它可以解决我的问题..

谢谢