Flutter 如何在颤振上对CupertinoTimerPicker进行不聚焦？

如何在颤振上对CupertinoTimerPicker进行不聚焦

CupertinoTimerPicker(
              mode: CupertinoTimerPickerMode.hm,
              minuteInterval: 1,
              secondInterval: 1,
              initialTimerDuration: _timer,
              onTimerDurationChanged: (Duration changedtimer) {
                // if the duration is set to zero or not set, set to No Countdown button
                if (changedtimer.inSeconds <= 0) {
                  setState(() {
                    _countdownType = CountdownType.DontSet;
                    _currentSelectedLabel = _buttonValueList[0];
                    _timer = Duration.zero;
                  });
                } else {
                  setState(() { 
                    _countdownType = CountdownType.Set;
                    _currentSelectedLabel = _buttonValueList[1];
                    _timer = changedtimer;
                  });
                }

                _onPressed(changedtimer);
              },
            ),

CupertinoTimerPicker(
模式：CupertinoTimerPickerMode.hm，
分钟间隔：1，
第二次间隔：1，
initialTimerDuration:\u计时器，
onTimerDurationChanged:（持续时间更改时间）{
//如果持续时间设置为零或未设置，则设置为无倒计时按钮
if（changedtimer.unseconds）