Android读取assets目录下的所有图片并显示的方法

List<Map<String, Object>> cateList = new ArrayList<Map<String, Object>>(); 
String[] list_image = null; 
try { 
//得到assets/processedimages/目录下的所有文件的文件名，以便后面打开操作时使用 
    list_image = context.getAssets().list("processedimages"); 
} catch (IOException e1) { 
    // TODO Auto-generated catch block 
    e1.printStackTrace(); 
} 
for(int i=0;i<list_image.length;++i) 
{ 
    InputStream open = null; 
    try { 
  String temp = "processedimages/"+list_image[i]; 
  open = context.getAssets().open(temp); 
  Bitmap bitmap = BitmapFactory.decodeStream(open); 
  Map<String, Object> map = new HashMap<String, Object>(); 
  map.put("name", list_image[i]); 
  map.put("iv", bitmap); 
  map.put("bg", R.drawable.phone_vip_yes); 
  map.put("cate_id",i); 
  cateList.add(map); 
  // Assign the bitmap to an ImageView in this layout 
    } catch (IOException e) { 
  e.printStackTrace(); 
      } finally { 
  if (open != null) { 
    try { 
      open.close(); 
    } catch (IOException e) { 
      e.printStackTrace(); 
    } 
  } 
       } 
}

adapter.setViewBinder(new ViewBinder() { 
             
    @Override 
    public boolean setViewValue( 
     View view, 
     Object data, 
     String textRepresentation) { 
 // TODO Auto-generated method stub 
  if((view instanceof ImageView) && (data instanceof Bitmap)) {   
  ImageView imageView = (ImageView) view;   
  Bitmap bmp = (Bitmap) data;   
  imageView.setImageBitmap(bmp);   
  return true;   
     }   
 return false; 
    } 
});

public void initdata(Context context)
{
//other codes...
      String[] list_image = null;
     try {
     //得到assets/processedimages/目录下的所有文件的文件名，以便后面打开操作时使用
                list_image = context.getAssets().list("processedimages");//attention this line
          } catch (IOException e1)
            {
                e1.printStackTrace();
            }
      //other codes.....
}