方向變化時圖像爲空？

Question

我想問爲什麼我的網格視圖無法顯示圖像後方向圖

我已經設置onConfigurationChange（）和onRetainNonCofigurationInstance（）但沒有解決我的問題。

這是我的代碼：

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的錯誤嗎？

Answer 1

終於我有找到解決辦法.. 我有錯誤的適配器而設定的圖像和文字..

這個我的老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; 
} 

我這一個改變：

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; 
} 

現在它可以解決我的問題..

謝謝