Gallery 的 Demo(2)

                Toast.makeText(_Gallery.this, String.valueOf(position), Toast.LENGTH_SHORT).show(); 
            } 
 
            @Override 
            public void onNothingSelected(AdapterView<?> arg0) { 
 
            } 
        }); 
    } 
 
    // 继承 BaseAdapter 用以实现自定义的图片适配器 
    public class ImageAdapter extends BaseAdapter { 
 
        private Context mContext; 
 
        public ImageAdapter(Context context) { 
            mContext = context; 
        } 
 
        public int getCount() { 
            return mThumbIds.length; 
        } 
 
        public Object getItem(int position) { 
            return position; 
        } 
 
        public long getItemId(int position) { 
            return position; 
        } 
 
        public View getView(int position, View convertView, ViewGroup parent) { 
            ImageView image = new ImageView(mContext); 
 
            image.setImageResource(mThumbIds[position]); 
            image.setAdjustViewBounds(true); 
            image.setLayoutParams(new Gallery.LayoutParams( 
                    LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT)); 
 
            return image; 
        } 
    } 
 
    // 需要显示的图片集合