/** 用下载任务列表更新应用列表的下载状态 */
 private void updateDownloadState(List<UpdateAppBean> list) {
   if (list == null || list.size() <= 0) {
     return;
   }
   Map<String, DownloadTask> map = DownloadTaskRecorder.getInstance().getDownloadTaskList();
   for (UpdateAppBean bean : list) {
     if (map.containsKey(bean.downloadUrl)) {
       DownloadTask task = map.get(bean.downloadUrl);
       bean.downloadStatus = task.state;
       bean.alreadyDownloadPercent = task.alreadyDownloadPercent;
     } else {
       bean.downloadStatus = DownloadTask.NOT_START;
       bean.alreadyDownloadPercent = 0;
     }
   }
 }
 @Override
 public void notifyDownloadState(DownloadTask downloadTask) {
   boolean needToUpdate = false;
   if (mBean.uAppList != null && mBean.uAppList.size() > 0) {
     for (UpdateAppBean bean : mBean.uAppList) {
       if (bean.downloadUrl.equals(downloadTask.url)) {
         needToUpdate = true;
         bean.downloadStatus = downloadTask.state;
         bean.alreadyDownloadPercent = downloadTask.alreadyDownloadPercent;
       }
     }
   }
   if (needToUpdate) {
     adapter.update(mBean.uAppList);
   }
 }