iOS Swift - 获取当前本地时间和日期时间戳 [英] iOS Swift - Get the Current Local Time and Date Timestamp
问题描述
我使用date作为Key,这是一个出席应用程序,我对iOS和Firebase中的日期和时间感到困惑。
- Employees
--Unique_ID
- 详细
姓名:约翰
- 出勤
- 日期今天
时间:8:00 AM
超时:5:00 PM
BreakStart:12:00 PM
BreakFinish:1:00 PM
这是我的代码来获取我用作Key的日期时间戳
重写func viewDidLoad(){
super.viewDidLoad()
let now = NSDate()
let nowTimeStamp = self.getCurrentTimeStampWOMiliseconds(dateToConvert:now)
//我将此日期保存为Firebase
dateToday = nowTimeStamp
}
func getCurrentTimeStampWOMiliseconds(dateToConvert:NSDate) - >字符串{
let objDateformat:DateFormatter = DateFormatter()
objDateformat.dateFormat =yyyy-MM-dd
let strTime:String = objDateformat.string(from:dateToConvert as Date)
let objUTCDate:NSDate = objDateformat.date(from:strTime)! as NSDate
let milliseconds:Int64 = Int64(objUTCDate.timeIntervalSince1970)
let strTimeStamp:String =\(milliseconds)
return strTimeStamp
}
但是当我把它转换回日期我得到2017-09-22 16:00:00 +0000,这是错误的,因为它是9月23日在我的位置。
什么是正确的代码使用,以便我可以得到正确的日期时间戳和时间戳记?
为了节省当前时间到firebase数据库我使用Unic Epoch对话:
let timestamp = NSDate()。timeIntervalSince1970
和解密Unix Epoch time to Date()。
let myTimeInterval = TimeInterval(timestamp)
let time = NSDate timeIntervalSince1970:TimeInterval(myTimeInterval))
I'm trying to make an attendance app and I am really confused about date and time in iOS and Firebase.
I use date as Key, this is the structure of my Firebase database.
--Employees
--Unique_ID
--Details
Name: John
--Attendance
--dateToday
Timein: 8:00 AM
Timeout: 5:00 PM
BreakStart: 12:00 PM
BreakFinish: 1:00 PM
This is my code to get the date timestamp I used as Key
override func viewDidLoad() {
super.viewDidLoad()
let now = NSDate()
let nowTimeStamp = self.getCurrentTimeStampWOMiliseconds(dateToConvert: now)
// I save this dateToday as Key in Firebase
dateToday = nowTimeStamp
}
func getCurrentTimeStampWOMiliseconds(dateToConvert: NSDate) -> String {
let objDateformat: DateFormatter = DateFormatter()
objDateformat.dateFormat = "yyyy-MM-dd"
let strTime: String = objDateformat.string(from: dateToConvert as Date)
let objUTCDate: NSDate = objDateformat.date(from: strTime)! as NSDate
let milliseconds: Int64 = Int64(objUTCDate.timeIntervalSince1970)
let strTimeStamp: String = "\(milliseconds)"
return strTimeStamp
}
But when I convert it back to date I get 2017-09-22 16:00:00 +0000, which is wrong because it is 23rd of September in my location.
What is the right code to use so that I can get the correct date timestamp and time timestamp?
For saving Current time to firebase database I use Unic Epoch Conversation:
let timestamp = NSDate().timeIntervalSince1970
and For Decoding Unix Epoch time to Date().
let myTimeInterval = TimeInterval(timestamp)
let time = NSDate(timeIntervalSince1970: TimeInterval(myTimeInterval))
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