我的代码正在尝试记录声音并将其显示在表格视图中。但是，似乎没有保存音频。我在日志文件中看到此消息。
2019-01-13 11：11：07.926903-0500反射声音[2902：31076] 317：ca_debug_string：inPropertyData == NULL
我不知道那是什么意思。似乎没有音频正在记录，并且当我在tableview中单击它时，它无法正常工作。我正在尝试遵循本教程https://www.youtube.com/watch?v=CrLbuzM9IDs
import UIKit;import AVFoundation
class ViewController: UIViewController, AVAudioRecorderDelegate, UITableViewDataSource, UITableViewDelegate {
var recordingSessioin: AVAudioSession!
var audioRecorder: AVAudioRecorder!
var aduioPlayer : AVAudioPlayer!
@IBOutlet var mytableVie3w : UITableView!
var numberOfRecords = 0
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return numberOfRecords
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for : indexPath)
cell.textLabel?.text = String(indexPath.row + 1)
return cell
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
let path = getDirectory().appendingPathComponent("\(indexPath.row + 1).m4a")
do {
aduioPlayer = try AVAudioPlayer(contentsOf: path)
aduioPlayer.play()
}
catch {
}
}
@IBOutlet var buttonL:UIButton!
@IBAction func record() {
if audioRecorder == nil{
numberOfRecords += 1
let fileName = getDirectory().appendingPathComponent("\(numberOfRecords).m4a")
let settings = [AVFormatIDKey: Int(kAudioFormatMPEG4AAC), AVSampleRateKey : 12000, AVNumberOfChannelsKey: 1, AVEncoderAudioQualityKey : AVAudioQuality.high.rawValue]
do {
audioRecorder = try AVAudioRecorder(url: fileName, settings: settings)
audioRecorder.delegate = self
audioRecorder.record()
buttonL.setTitle("Stop", for: .normal)
}
catch {
displayALert(title: "Ups", message: "Recording Failed")
}
}
else {
audioRecorder.stop()
audioRecorder = nil
buttonL.setTitle("Start", for: .normal)
UserDefaults.standard.set(numberOfRecords, forKey: "myN")
}
}
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
recordingSessioin = AVAudioSession.sharedInstance()
AVAudioSession.sharedInstance().requestRecordPermission { (hasPermsionn) in
if hasPermsionn{
print("Yes")
}
}
if let number:Int = UserDefaults.standard.object(forKey: "myN") as? Int
{
numberOfRecords = number
}
}
func getDirectory() -> URL {
let paths = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)
let documentDirectory = paths[0]
return documentDirectory
}
func displayALert(title : String, message: String){
let alert = UIAlertController(title: title, message: "dismiss", preferredStyle: .alert)
alert.addAction(UIAlertAction(title: "diss", style: .default, handler: nil))
present(alert, animated: true, completion: nil)
}
}