Widget _basicImageViewer(BuildContext context) {
    return TDButton(
      type: TDButtonType.ghost,
      theme: TDButtonTheme.primary,
      isBlock: true,
      size: TDButtonSize.large,
      text: '基础图片预览',
      onTap: () {
        TDImageViewer.showImageViewer(context: context, images: images);
      },
    );
  }