func convertNSTimeInterval2String(_ time: TimeInterval) -> String {

}

var progressTimer: Timer!

progressTimer = Timer.scheduledTimer(timeInterval: 0.1, target: self, selector: timePlayerSelector, userInfo: nil, repeats: true)

let timePlayerSelector: Selector = #selector(AudioViewController.updatePlayTime)

@objc func updatePlayTime() {
		labelCurrentTime.text = convertNSTimeInterval2String(audioPlayer.currentTime)
		progressViewPlay.progress = Float(audioPlayer.currentTime / audioPlayer.duration )
}


progressTimer.invalidate()

let documentDirectory = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)[0]
audioFile = documentDirectory.appendingPathComponent("recordFile.m4a")