public void initView(ApkBean data, int position) {
   this.bean = data;
   this.mPosition = position;
   this.implInfo =
       implAgent.getImplInfo(
           data.getPackageName(), data.getPackageName(), data.getVersionCode());
   if (null != this.implInfo) {
     this.implInfo
         .setDownloadUrl(data.getrDownloadUrl())
         .setIconUrl(data.getIconUrl())
         .setTitle(data.getName());
     implAgent.bindImplCallback(this, implInfo);
   }
   mBt.setTag(this);
   refresh();
 }
  @Override
  public View getView(int position, View convertView, ViewGroup parent) {
    ViewHolder viewholder;
    /* 将convertView封装在ViewHodler中,减少系统内存占用 */
    if (convertView == null) {
      /* convertView为空则初始化 */
      convertView = mInflater.inflate(R.layout.item_preload_listview, parent, false);
      viewholder = new ViewHolder(convertView);
      convertView.setTag(viewholder);
    } else {
      // 不为空则直接使用已有的封装类
      viewholder = (ViewHolder) convertView.getTag();
    }
    final ApkBean data = mPreloadData.get(position);
    viewholder.initView(data, position);

    if (position + 1 > SHOW_ICON_NUMBER) {
      viewholder.mSize.setVisibility(View.GONE);
      viewholder.mBt.setVisibility(View.GONE);
      viewholder.mIcon.setVisibility(View.GONE);
      viewholder.mClickItem.setClickable(false);
      viewholder.mName.setPadding(20, 10, 10, 10);
    } else {
      viewholder.mName.setPadding(0, 0, 0, 0);
      viewholder.mSize.setVisibility(View.VISIBLE);
      viewholder.mBt.setVisibility(View.VISIBLE);
      viewholder.mIcon.setVisibility(View.VISIBLE);

      if (AppliteUtils.isLoadNetworkBitmap(mActivity))
        mBitmapUtil.display(viewholder.mIcon, data.getIconUrl());
      viewholder.mSize.setText(AppliteUtils.bytes2kb(data.getApkSize()));
      viewholder.mClickItem.setClickable(true);
      viewholder.mClickItem.setOnClickListener(
          new View.OnClickListener() {
            @Override
            public void onClick(View v) {
              ((OSGIServiceHost) mActivity)
                  .jumptoDetail(
                      data.getPackageName(),
                      data.getName(),
                      data.getIconUrl(),
                      data.getVersionCode(),
                      null,
                      true);
            }
          });
    }
    viewholder.mName.setText(data.getName());
    viewholder.mBt.setOnClickListener(
        new View.OnClickListener() {

          @Override
          public void onClick(View v) {
            ViewHolder vh = (ViewHolder) v.getTag();
            ImplHelper.onClick(
                mActivity,
                vh.implInfo,
                vh.bean.getrDownloadUrl(),
                vh.bean.getName(),
                vh.bean.getIconUrl(),
                Environment.getExternalStorageDirectory()
                    + File.separator
                    + Constant.extenStorageDirPath
                    + vh.bean.getName()
                    + ".apk",
                null,
                vh);
          }
        });
    return convertView;
  }