Widget _buildOperationAvatar(BuildContext context){
    var assetUrl = 'assets/img/td_avatar_1.png';
    var assetUrl2 = 'assets/img/td_avatar_2.png';
    var avatarList = [assetUrl, assetUrl2, assetUrl, assetUrl2, assetUrl];
    return Container(
      alignment: Alignment.centerLeft,
      padding: const EdgeInsets.only(left: 16),
      child: TDAvatar(
          size: TDAvatarSize.medium,
          type: TDAvatarType.operation,
          avatarDisplayListAsset: avatarList,
          onTap: () {
            TDToast.showText('点击了操作', context: context);
          }),
    );
  }