Widget _customImageTop(BuildContext context) {
    return TDButton(
      text: '图片置顶-自定义列表内容',
      size: TDButtonSize.large,
      type: TDButtonType.outline,
      theme: TDButtonTheme.primary,
      onTap: () {
        showGeneralDialog(
          context: context,
          pageBuilder: (BuildContext buildContext, Animation<double> animation,
              Animation<double> secondaryAnimation) {
            return TDImageDialog(
              image: _demoImage,
              title: _dialogTitle,
              contentWidget: ListView(
                shrinkWrap: true,
                children: const [
                  TDText('红色文字', textColor: Colors.red),
                  TDText('绿色文字', textColor: Colors.green),
                ],
              ),
            );
          },
        );
      },
    );
  }