CGRect pickerFrame = CGRectMake(0, 120, 0, 0);
datePicker = [[UIDatePicker alloc] initWithFrame:pickerFrame];
datePicker.datePickerMode = UIDatePickerModeCountDownTimer;
根据我的代码,我将 UIDatePicker 设置为 UIDatePickerModeCountDownTimer 模式我如何从 uidatepicker 中获取分钟值?