Widget _buildSuccessMessage(BuildContext context) {
    return TDButton(
      isBlock: true,
      text: '成功通知',
      size: TDButtonSize.large,
      type: TDButtonType.outline,
      width: 450,
      theme: TDButtonTheme.primary,
      onTap: () {
        TDMessage.showMessage(
          context: context,
          visible: true,
          icon: true,
          content: _commonContent,
          theme: MessageTheme.success,
          duration: 3000,
        );
      },
    );
  }