Widget _loading(BuildContext context) {
    return Row(
      children: [
        const SizedBox(
          width: 16,
        ),
        Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            Padding(
              padding: const EdgeInsets.only(bottom: 16),
              child: TDText(
                '加载默认提示',
                font: TDTheme.of(context).fontBodyMedium,
                textColor: TDTheme.of(context).fontGyColor2.withOpacity(0.6),
              ),
            ),
            Container(
                height: 72,
                width: 72,
                clipBehavior: Clip.hardEdge,
                decoration: BoxDecoration(borderRadius: BorderRadius.circular(TDTheme.of(context).radiusDefault)),
                child: Container(
                    alignment: Alignment.center,
                    color: TDTheme.of(context).grayColor2,
                    child: Icon(
                      TDIcons.ellipsis,
                      size: 22,
                      color: TDTheme.of(context).fontGyColor3,
                    )
                )
            ),
            // 实际组件写法如下：上面仅为加载展示
            // const TDImage(
            //   imgUrl:
            //       'https://images.pexels.com/photos/842711/pexels-photo-842711.jpeg?auto=compress&cs=tinysrgb&w=1260&h=750&dpr=2',
            //   type: TDImageType.roundedSquare,
            // ),
          ],
        ),
        const SizedBox(
          width: 24,
        ),
        Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            Padding(
              padding: const EdgeInsets.only(bottom: 16),
              child: TDText(
                '加载自定义提示',
                font: TDTheme.of(context).fontBodyMedium,
                textColor: TDTheme.of(context).fontGyColor2.withOpacity(0.6),
              ),
            ),
            Container(
                height: 72,
                width: 72,
                clipBehavior: Clip.hardEdge,
                decoration: BoxDecoration(borderRadius: BorderRadius.circular(TDTheme.of(context).radiusDefault)),
                child: Container(
                    alignment: Alignment.center,
                    color: TDTheme.of(context).grayColor2,
                    child: RotationTransition(
                        turns: animation,
                        alignment: Alignment.center,
                        child: TDCircleIndicator(
                          color: TDTheme.of(context).brandNormalColor,
                          size: 18,
                          lineWidth: 3,
                        ))
                )
            ),
            // 实际组件写法如下：上面仅为加载展示
            // TDImage(
            //   imgUrl:
            //       'https://images.pexels.com/photos/842711/pexels-photo-842711.jpeg?auto=compress&cs=tinysrgb&w=1260&h=750&dpr=2',
            //   loadingWidget: RotationTransition(
            //       turns: animation,
            //       alignment: Alignment.center,
            //       child: TDCircleIndicator(
            //         color: TDTheme.of(context).brandNormalColor,
            //         size: 18,
            //         lineWidth: 3,
            //       )),
            //   type: TDImageType.roundedSquare,
            // ),
          ],
        ),
        const SizedBox(
          width: 24,
        ),
      ],
    );
  }