使用 AVAudioRecorder 录制文件，录制后无法获取文件路径

Posted 2023-02-25

【中文标题】使用 AVAudioRecorder 录制文件，录制后无法获取文件路径

【英文标题】：Recording file with AVAudioRecorder, unable to get path to file after recording

【发布时间】：2017-04-30 20:12:51

【问题描述】：

这是我用来制作音频文件的代码，这里一切似乎都正常：

func startRecording() 
    let audioFilename = getDocumentsDirectory().appendingPathComponent("Meeting_Audio.m4a")

    let settings = [
        AVFormatIDKey: Int(kAudioFormatMPEG4AAC),
        AVSampleRateKey: 12000,
        AVNumberOfChannelsKey: 1,
        AVEncoderAudioQualityKey: AVAudioQuality.high.rawValue
    ]

    do 
        audioRecorder = try AVAudioRecorder(url: audioFilename, settings: settings)
        audioRecorder.delegate = self
        audioRecorder.record()

     catch 
        finishRecording(success: false)
    


func audioRecorderDidFinishRecording(_ recorder: AVAudioRecorder, successfully flag: Bool) 
    makeFileData()



@IBAction func onEndMeetingButtonClicked(_ sender: UIButton) 
    finishRecording(success: true)


func finishRecording(success: Bool) 
    audioRecorder.stop()
    audioRecorder = nil

    if success 
        print("recording succeeded :)")
     else 
        print("recording failed :(")
    

这是我的函数的简化版本，它仍然重现了问题。我从audioRecorderDidFinishRecording 调用这个函数。我似乎无法获取文件路径。

func makeFileData() 

    if let filePath = Bundle.main.path(forResource: "Meeting_Audio", ofType: "m4a")
        print("File path loaded.")

        if let fileData = NSData(contentsOfFile: filePath) 
            print("File data loaded.")
        
    

【参考方案1】：

您正在将文件写入一个位置：

// Documents directory!
let audioFilename = getDocumentsDirectory().appendingPathComponent("Meeting_Audio.m4a")

并从另一个人那里读到它：

// app bundle!
let filePath = Bundle.main.path(forResource: "Meeting_Audio", ofType: "m4a")

尝试从您写入的位置读取文件，如下所示：

if let fileUrl = Bundle.main.url(forResource: "Meeting_Audio", withExtension: "m4a")
    print("File path loaded.")

    if let fileData = NSData(contentsOf: fileUrl) 
        print("File data loaded.")