Widget _customConfirmVertical(BuildContext context) {
    return TDButton(
      text: '纵向按钮-自定义内容',
      size: TDButtonSize.large,
      type: TDButtonType.outline,
      theme: TDButtonTheme.primary,
      onTap: () {
        showGeneralDialog(
          context: context,
          pageBuilder: (BuildContext buildContext, Animation<double> animation,
              Animation<double> secondaryAnimation) {
            return TDAlertDialog.vertical(
                title: _dialogTitle,
                contentWidget: TDText.rich(
                    TDTextSpan(
                        children: [
                          TDTextSpan(text: '红色文字', textColor: Colors.red),
                          TDTextSpan(text: '绿色文字', textColor: Colors.green),
                        ]
                    )
                ),
                buttons: [
                  TDDialogButtonOptions(
                      title: '主要按钮',
                      action: () {
                        Navigator.pop(context);
                      },
                      theme: TDButtonTheme.primary),
                  TDDialogButtonOptions(
                      title: '次要按钮',
                      titleColor: TDTheme.of(context).brandColor7,
                      action: () {
                        Navigator.pop(context);
                      },
                      theme: TDButtonTheme.light),
                ]);
          },
        );
      },
    );
  }