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iosswiftnsdateformatter

How do you get last weeks date in swift in YYYY-MM-DD format?

How can I display date of one week ago in the format of YYYY-MM-DD like this one "2015-02-18" in Swift

Solution

  • You can use Calendar's date(byAdding component:) to calculate today minus a week and then you can format your date as desired using DateFormatter:

    let lastWeekDate = Calendar(identifier: .iso8601).date(byAdding: .weekOfYear, value: -1, to: Date())!
let dateFormatter = DateFormatter()
dateFormatter.calendar = .init(identifier: .iso8601)
dateFormatter.locale = .init(identifier: "en_US_POSIX")
dateFormatter.dateFormat = "yyyy-MM-dd"
let lastWeekDateString = dateFormatter.string(from: lastWeekDate)