class  MyAdapter extends BaseAdapter{		List
    
      list = new ArrayList
     
      ();		Context mContext;		LayoutInflater mInflater;				public MyAdapter(Context context) {			this.mContext = context;			this.mInflater = LayoutInflater.from(context);			JSONArray jsonObject = new JSONArray();//模拟图片混排			jsonObject.put("http://e.hiphotos.baidu.com/album/w%3D2048/sign=c54faa473ac79f3d8fe1e3308e99cc11/7a899e510fb30f244ed503bbc995d143ad4b033e.jpg");			jsonObject.put("http://e.hiphotos.baidu.com/album/w%3D2048/sign=c54faa473ac79f3d8fe1e3308e99cc11/7a899e510fb30f244ed503bbc995d143ad4b033e.jpg");			for (int i = 0; i < 100; i++) {				list.add(jsonObject);			}		}		@Override		public int getCount() {			// TODO Auto-generated method stub			return list.size();		}		@Override		public Object getItem(int position) {			// TODO Auto-generated method stub			return list.get(position);		}		@Override		public long getItemId(int position) {			// TODO Auto-generated method stub			return position;		}		@Override		public View getView(int position, View convertView, ViewGroup parent) {			ViewHolder holder;			if(convertView == null){				holder = new ViewHolder();				convertView = mInflater.inflate(R.layout.list_item_layout,null);				holder.textView = (TextView)convertView;				convertView.setTag(holder);			}else{				holder = (ViewHolder)convertView.getTag();			}						JSONArray array = list.get(position);			SpannableStringBuilder builder = new SpannableStringBuilder();			holder.textView.setTag(R.id.listView1,builder);						for (int i = 0; i < array.length(); i++) {				try {					String str = array.getString(i);					//执行异步下载					mSpanAsyncLoad.displayImage(str, builder, holder.textView);				} catch (JSONException e) {					e.printStackTrace();				}			}						holder.textView.setText(builder);			return convertView;		}	}
     
    

public static class ImageSpanAsyncLoad{		Context mContext;		Drawable mDrawable = null;//默认显示图片		final LruCache
    
      drawCache = new LruCache
     
      (100);				public ImageSpanAsyncLoad(Context context) {			mContext = context.getApplicationContext();			Resources resources = mContext.getResources();			mDrawable = resources.getDrawable(R.drawable.ic_launcher);			mDrawable.setCallback(null);			mDrawable.setBounds(0,0,mDrawable.getIntrinsicHeight(),mDrawable.getIntrinsicWidth());		}		public void displayImage(String path,SpannableStringBuilder builder,TextView textView){			Drawable drawable = drawCache.get(path);			boolean isNeedDown = false;			if(drawable == null){//缓存无图片				isNeedDown = true;				drawable = mDrawable;			}			ImageSpan imageSpan = new ImageSpan(drawable);			SpannableString spannableString = new SpannableString(path);			spannableString.setSpan(imageSpan,0,spannableString.length(),Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);			builder.append(spannableString);						if(isNeedDown){				int startIndex = builder.getSpanStart(imageSpan);				int endIndex = builder.getSpanEnd(imageSpan);					new AsyncTask
      
       (){												String mPath;//下载地址						SpannableStringBuilder builder;//需要更新的builder						WeakReference
       
         weakReference;//textview对象						int[] indexs;//imagespan所在的索引位置												@Override						protected Drawable doInBackground(Object... params) {//http 执行下载														mPath = (String)params[0];							builder = (SpannableStringBuilder)params[1];							weakReference = new WeakReference
        
         ((TextView)params[2]);							indexs = (int[])params[3];//imagespan 的索引位置							Drawable drawable = mContext.getResources().getDrawable(R.drawable.ic_launcher);							drawable.setBounds(0, 0, 50, 50);							drawable.setCallback(null);							if(drawable != null)drawCache.put(mPath,drawable);														return drawable;						}						@Override						protected void onPostExecute(Drawable drawable) {//更新到ui							if(drawable == null)return;							TextView textView = weakReference.get();							//如果不为null与当前的textview对象是等于需要更新的textview对象则进行更新							if(textView != null && (textView.getTag(R.id.listView1) == builder)){								ImageSpan imageSpan = new ImageSpan(drawable);								SpannableString spannableString = new SpannableString(mPath);								spannableString.setSpan(imageSpan, 0, spannableString.length(),Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);								builder.replace(indexs[0],indexs[1],spannableString);//直接替换之前位置的imagespan								textView.setText(builder);							}						}					}.execute(path,builder,textView,new int[]{startIndex,endIndex});			}		}	}