Dealing with timestamp in Swift

What is timestamp?

A timestamp is that which contain some characters that are in an encoded form which will contain any event, date or time etc. For more information, you can also go through from here.

Where and How we use a timestamp?

A timestamp is that which is not readable form when you get it from the server or from other sources. So while to show some event, date or time in your application you have to make a timestamp into the readable form, you can make it readable form using these objects Date, Calendar, DateFormatter and use many more.

So I wrote a function that will help you to make it in readable form and gives you a time, day and date respectively.

 func getDateDayAndTime(timestamp: NSNumber) -> String {
        let date  = Date(timeIntervalSince1970: Double(truncating: timestamp)/1000)
        let calendar = Calendar.current

        if calendar.isDateInToday(date) {
            let dateFormatter = DateFormatter()
            dateFormatter.timeZone = NSTimeZone.local
            dateFormatter.dateFormat = "hh:mm a"
            let time = dateFormatter.string(from: date)
            return time
        }else if calendar.isDateInYesterday(date) {
            return "Yesterday"
        }
        else if calendar.isDateInWeekend(date) {
            let component = calendar.component(Calendar.Component.weekday, from: date)
            return self.getDay(value: component)
        } else {
            let dateFormatter = DateFormatter()
            dateFormatter.timeZone = NSTimeZone.local
            dateFormatter.dateFormat = "dd/MM/YY"
            let time = dateFormatter.string(from: date)
            return time
        }
    }

func getDateDayAndTime(timestamp: NSNumber) -> String {

let date = Date(timeIntervalSince1970: Double(truncating: timestamp)/1000)

let calendar = Calendar.current

if calendar.isDateInToday(date) {

let dateFormatter = DateFormatter()

dateFormatter.timeZone = NSTimeZone.local

dateFormatter.dateFormat = "hh:mm a"

let time = dateFormatter.string(from: date)

return time

}else if calendar.isDateInYesterday(date) {

return "Yesterday"

}

else if calendar.isDateInWeekend(date) {

let component = calendar.component(Calendar.Component.weekday, from: date)

return self.getDay(value: component)

} else {

let dateFormatter = DateFormatter()

dateFormatter.timeZone = NSTimeZone.local

dateFormatter.dateFormat = "dd/MM/YY"

let time = dateFormatter.string(from: date)

return time

}

This function will work in following cases:-

Timestamp will belong to today:- it will return you today’s time
Timestamp will belong to yesterday:- it will return you Yesterday.
Timestamp will belong to the current weekend:- it will return you the name of the day.
Timestamp will belong to before current weekend:- it will return you the date of that day.

For getting current weekdays you have to write these cases:-

func getDay(value: Int) -> String {
        switch value {
        case 1:
            return "Sunday"
        case 2:
            return "Monday"
        case 3:
            return "Tuesday"
        case 4:
            return "Wednesday"
        case 5:
            return "Thursday"
        case 6:
            return "Friday"
        case 7:
            return "Saturday"
        default:
            return ""
        }
    }

func getDay(value: Int) -> String {

switch value {

case 1:

return "Sunday"

case 2:

return "Monday"

case 3:

return "Tuesday"

case 4:

return "Wednesday"

case 5:

return "Thursday"

case 6:

return "Friday"

case 7:

return "Saturday"

default:

return ""

}

I hope from this, it will make you more comfortable dealing with a timestamp. Thanks for tuning in once again!

bhavuk chawla 23 May 2018

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Dealing with timestamp in Swift

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