flutter - 如何在 cupertinoTimerPicker 上添加天数或无限小时数？

Question

如何添加天数或无限小时数CupertinoTimerPicker？或者这是不使用添加小时和分钟的任何方式CupertinoTimerPicker

  Widget time() {
    return CupertinoTimerPicker(
      mode: CupertinoTimerPickerMode.hm,
      minuteInterval: 1,
      secondInterval: 1,
      initialTimerDuration: initialtimer,
      onTimerDurationChanged: (Duration changedtimer) {
        setState(() {
          initialtimer = changedtimer;
        });
      },
    );
  }