Question

android 如何在listview中使用volley

Answer 1

加载图片？在adapter的getView里面用就好。

@Override  
    public View getView(int position, View convertView, ViewGroup parent) {  
  
        ViewHolder viewHolder = null;  
        if (convertView == null) {  
            convertView = LayoutInflater.from(mContext).inflate(  
                    R.layout.volley_list_item, null);  
            viewHolder = new ViewHolder();  
            viewHolder.mTextView = (TextView) convertView  
                    .findViewById(R.id.tv_tips);  
            viewHolder.mImageView = (NetworkImageView) convertView  
                    .findViewById(R.id.iv_image);  
            convertView.setTag(viewHolder);  
        } else {  
            viewHolder = (ViewHolder) convertView.getTag();  
        }  
        String url = "";  
        url = urlArrays[position % urlArrays.length];  
  
        viewHolder.mTextView.setText(position+"|"+urlArrays.length) ;     
        viewHolder.mImageView.setImageUrl(url, ImageCacheManager.getInstance().getImageLoader());  
          
        return convertView;  
    }

Answer 2

private RequestQueue requestQueue;
requestQueue = Volley.newRequestQueue(context);
ImageLoader imageLoader = new ImageLoader(requestQueue,
ImageLruCacheManager.getInstance());//ImageLruCacheManager.getInstance()是自己写的一级缓存
holder.imageView.setDefaultImageResId(R.drawable.defaultcovers);//默认时图片
holder.imageView.setErrorImageResId(R.drawable.defaultcovers);//出错时图片

String url = list.get(position).get("wap_thumb").toString();//获得图片url
holder.imageView.setImageUrl(url, imageLoader);