Widget _basicTypePureInput(BuildContext context) {
    return Column(
      children: [
        TDInput(
          controller: controller[3],
          backgroundColor: Colors.white,
          hintText: '请输入文字',
          onChanged: (text) {
            setState(() {});
          },
          onClearTap: () {
            controller[3].clear();
            setState(() {});
          },
        ),
        const SizedBox(
          height: 16,
        )
      ],
    );
  }