我正在尝试将String转换为我所在国家时区的日期,但结果不像以前那样格式化
let dbl = TimeInterval(longDate)
let date = Date(timeIntervalSince1970: dbl / 1000)
let formatter = DateFormatter()
print(longDate)
formatter.calendar = Calendar(identifier: .persian)
formatter.locale = Locale(identifier: "fa_IR")
formatter.timeZone = TimeZone(identifier: "IRST")
formatter.dateFormat = "yyyy-MM-dd HH:mm:ss"
let a = formatter.string(from: date)
resultDate = dateFormatter.date(from: a)
print(reslutDate,a) //2018-08-02 11:56:28 +0000 incorrect time 1397-05-11 15:56:28 correct time
打印行中的日期正确,但是时间不正确。我需要时间到我的时间选择器
更新:
当我更改时间时,我有时间监听器,请在textField上设置值
如下所示:
self.timePickerFrom.addTarget(self, action: #selector(self.dateChangedFrom(_:)), for: .valueChanged). // the listener
这就是我为改变价值而做的事情:
let date = self.timePickerFrom.date
print(date)
let components = Calendar.current.dateComponents([.hour, .minute], from: date)
let hour = components.hour!
let minute = components.minute!
self.timeOfloadingLable.text = "\(hour):\(minute)"
但是问题是当我改变分钟数时会向前移动30分钟
答案 0 :(得分:1)
您的操作方式有误,您应该在日期选择器上设置格式,而不是日期选择器的date
。
看下面的代码:
@IBOutlet weak var epoch: UITextField!
@IBOutlet weak var dateTimePicker: UIDatePicker!
@IBAction func presentDate(_ sender: UIButton) {
guard let text = epoch.text else {return}
guard let epoch = Double(text) else {return}
guard let date = convertDate(epoch: epoch) else {return}
dateTimePicker.date = date
dateTimePicker.timeZone = TimeZone(identifier: "IRST")
dateTimePicker.locale = Locale(identifier: "fa_IR")
dateTimePicker.calendar = Calendar(identifier: Calendar.Identifier.persian)
}
private func convertDate(epoch: Double) -> Date? {
let date = Date(timeIntervalSince1970: epoch)
return date
}
是你的意思吗?
我刚刚上传了一个示例项目,您可以在这里查看它:sample project