conversion from NSTimeInterval to hour,minutes,seconds,milliseconds in swift

Question

My code is here:

func stringFromTimeInterval(interval:NSTimeInterval) -> NSString {

    var ti = NSInteger(interval)
    var ms = ti * 1000
    var secon         


        

Answer 1

Swift 4, without using the .remainder (which returns wrong values):

func stringFromTimeInterval(interval: Double) -> NSString {

    let hours = (Int(interval) / 3600)
    let minutes = Int(interval / 60) - Int(hours * 60)
    let seconds = Int(interval) - (Int(interval / 60) * 60)

    return NSString(format: "%0.2d:%0.2d:%0.2d",hours,minutes,seconds)
}