使用Swift，錄製並保存音頻文件

//
//  RecordSoundsViewController.swift
//  PitchPerfect
//
//  Created by Zzcz on 2017/9/27.
//  Copyright © 2017年 fly. All rights reserved.
//

import UIKit
import AVFoundation

class RecordSoundsViewController: UIViewController {
    
    @IBOutlet weak var recordButton: UIButton!
    @IBOutlet weak var recordingLable: UILabel!
    @IBOutlet weak var stopRecordingButton: UIButton!

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

    var audioRecorder : AVAudioRecorder!
    
    @IBAction func recordAudio(_ sender: Any) {
        recordingLable.text = "Recording in Progress"
        stopRecordingButton.isEnabled = true
        recordButton.isEnabled = false
        
        let dirPath = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0] as String
        let recordingName = "recordedVoive.wav"
        let pathArray = [dirPath,recordingName]
        let filePaht = URL(string: pathArray.joined(separator: "/"))
        
        let session = AVAudioSession.sharedInstance()

        try! session.setCategory(AVAudioSessionCategoryPlayAndRecord, with: AVAudioSessionCategoryOptions.defaultToSpeaker)

        
        try! audioRecorder = AVAudioRecorder(url: filePaht!, settings: [:])
        audioRecorder.delegate = self
        audioRecorder.isMeteringEnabled = true
        audioRecorder.prepareToRecord()
        audioRecorder.record()
        
    }
    @IBAction func stopRecording(_ sender: Any) {
    
        recordingLable.text = "Tap to Record"
        recordButton.isEnabled = true
        stopRecordingButton.isEnabled = false
        audioRecorder.stop()
        let audioSession = AVAudioSession.sharedInstance()
        try! audioSession.setActive(false)
    
    }
    



}
extension RecordSoundsViewController : AVAudioRecorderDelegate {
    func audioRecorderDidFinishRecording(_ recorder: AVAudioRecorder, successfully flag: Bool) {
        print("finished recording")
    }
}