Widget _checkPosition(BuildContext context) {
    return Column(
      children: [
        TDRadioGroup(
          contentDirection: TDContentDirection.right,
          selectId: 'index:0',
          child: const TDRadio(
            id: 'index:0',
            title: '单选',
          ),
        ),
        TDRadioGroup(
          contentDirection: TDContentDirection.left,
          selectId: 'index:0',
          child: const TDRadio(
            id: 'index:0',
            title: '单选',
            showDivider: false,
          ),
        )
      ],
    );
  }