How to convert NSDate in to relative format as “Today”,“Yesterday”,“a week ago”,“a month ago”,“a year ago”?

Question

I want to convert nsdate in to relative format like \"Today\",\"Yesterday\",\"a week ago\",\"a month ago\",\"a year ago\",\"date as it is\".

I have writ

Answer 1

let formatter = DateComponentsFormatter()
formatter.unitsStyle = .full

let now = NSDate()


let dateMakerFormatter = DateFormatter()

dateMakerFormatter.dateFormat = "yyyy/MM/dd HH:mm:ss z"
let dateString = "2017-03-13 10:38:54 +0000"
let stPatricksDay = dateMakerFormatter.date(from: dateString)!


let calendar = NSCalendar.current



let components = calendar.dateComponents([.hour, .minute,.weekOfMonth,.day,.year,.month,.second], from: stPatricksDay, to: now as Date)



if components.year! > 0 {
    formatter.allowedUnits = .year
} else if components.month! > 0 {
    formatter.allowedUnits = .month
} else if components.weekOfMonth! > 0 {
    formatter.allowedUnits = .weekOfMonth
} else if components.day! > 0 {
    formatter.allowedUnits = .day
} else if components.hour! > 0 {
    formatter.allowedUnits = .hour
} else if components.minute! > 0 {
    formatter.allowedUnits = .minute
} else {
    formatter.allowedUnits = .second
}

let formatString = NSLocalizedString("%@ ago", comment: "Used to say how much time has passed. e.g. '2 hours ago'")

 let timeString = formatter.string(from: components)

String(format: formatString, timeString!)