小编EvB*_*EvB的帖子

我知道有些线程出现此错误消息，但是它们并没有真正提供问题的答案，这就是为什么我决定打开另一个线程并再次询问...希望其他人遇到相同的问题，并解决了它。

import UIKit
import AVFoundation

class RecordSoundsViewController: UIViewController, AVAudioRecorderDelegate {

// MARK: IBOutlets for Buttons
@IBOutlet weak var recordingLable: UILabel!
@IBOutlet weak var recordButton: UIButton!
@IBOutlet weak var stopRecordingButton: UIButton!

var audioRecorder : AVAudioRecorder!

override func viewDidLoad() {
    super.viewDidLoad()
    stopRecordingButton.isEnabled = false
    // Do any additional setup after loading the view, typically from a nib.
}

override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)
}

@IBAction func recordAudio(_ sender: Any) {
    configureUI(true) // Call to set Buttons enabled state correct

    // …