日历小时部分提前5小时，无法对其进行调整

如何解决日历小时部分提前5小时，无法对其进行调整

我的应用中有两个组件。一个UIDATEPICKER，设置为仅选择时间HOURS AND MINUTES。日历（FSCALENDAR第三方），它为我选择日期，月份和年份。我试图结合从uidatepicker中选择的时间和从日历中选择的日期来创建通知。到目前为止，它仍在工作，但要提前5个小时。我认为是因为uidatepicker的12小时格式。如何提取24小时格式的小时部分？

下面的代码用于提取日期和时间。

class ReminderViewController: UIViewController,FSCalendarDelegate,FSCalendarDataSource {
    var reminderDate : String?
    var reminderDay : Int?
    var reminderMonth : Int?
    var reminderYear : Int?
    var reminderHour : Int?
    var reminderMinute : Int?

    
    
    @IBOutlet weak var rDatePicker: UIDatePicker!
    @IBAction func reminderDatePicker(_ sender: Any) {
            var df = DateFormatter()
            let date = rDatePicker.date
            let dateAsString = df.string(from: date)
            let components = Calendar.current.dateComponents([.hour,.minute],from: date)
            reminderHour = components.hour!
            reminderMinute = components.minute!
        
    }
    @IBOutlet weak var doneButton: UIButton!

    @IBAction func doneAction(_ sender: Any) {
        let calendar = Calendar.current
        let totalComponents = NSDateComponents()
        totalComponents.day = reminderDay!
        totalComponents.hour = reminderHour!
        totalComponents.month = reminderMonth!
        totalComponents.minute = reminderMinute!
        totalComponents.year = reminderYear!
          let finalDate = calendar.date(from: totalComponents as DateComponents)
          print(finalDate)
    }
    
override func viewDidLoad() {
        super.viewDidLoad()

        self.view.widthAnchor.constraint(equalToConstant: 500).isActive = true
        reminderCalendar.delegate = self
        reminderCalendar.dataSource = self
        
    let totalComponents = NSDateComponents()
    let calendar = Calendar.current
    let date = Date()
    let components = Calendar.current.dateComponents([.hour,.minute,.month,.day,.year],from: date)
    reminderHour = components.hour!
    reminderMinute = components.minute!
    reminderMonth = components.month!
    reminderDay = components.day!
    reminderYear = components.year!
    
    let finalDate = calendar.date(from: components as DateComponents)
    print("FINAL",finalDate)
    
    }

    func calendar(_ calendar: FSCalendar,didSelect date: Date,at monthPosition: FSCalendarMonthPosition) {
            print(date)
            var df = DateFormatter()
            df = DateFormatter()
            df.dateFormat = "dd-MM-yyyy"
            reminderDate =  df.string(from: date)
            reminderMonth = Calendar.current.component(.month,from: date)
            reminderDay = Calendar.current.component(.day,from: date)
            reminderYear = Calendar.current.component(.year,from: date)
        
        print(reminderMonth)
        print(reminderYear)
        print(reminderDay)
    }
}

解决方法

获取日期和时间，并根据您所在的时区将其转换为UST格式，这就是为什么它会造成问题

    func localToUTC(date:String) -> String {
    let dateFormatter = DateFormatter()
    dateFormatter.dateFormat = "yyyy-MM-dd"
    dateFormatter.calendar = NSCalendar.current
    dateFormatter.timeZone = TimeZone.current

    let dt = dateFormatter.date(from: date)
    dateFormatter.timeZone = TimeZone(abbreviation: "UTC")
    dateFormatter.dateFormat = "yyyy-MM-dd"

    return dateFormatter.string(from: dt!)
}


func calendar(_ calendar: FSCalendar,didSelect date: Date,at monthPosition: FSCalendarMonthPosition) {
        print(date)
        var df = DateFormatter()
        df = DateFormatter()
        df.dateFormat = "yyyy:MM:dd:HH:mm:ss"
        reminderDate =  df.string(from: date)
        reminderMonth = Calendar.current.component(.month,from: date)
        reminderDay = Calendar.current.component(.day,from: date)
        reminderYear = Calendar.current.component(.year,from: date)
    
    print(reminderMonth)
    print(reminderYear)
    print(reminderDay)
}