AVAudioRecorder不工作

Question

无法获得AVAudioRecorder使用URL的代码。有人能在iOS和Swift 3上录制音频吗？下面的粗体文本显示了以下错误：

“不能使用类型的参数列表调用'AVAudioRecorder‘类型的初始化程序(URL: URL，设置.”

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    //Dispose of any resources that can be recreated.
}

func setupRecorder(){
    let recordSettings = [AVFormatIDKey : kAudioFormatAppleLossless,
                          AVEncoderAudioQualityKey : AVAudioQuality.max.rawValue,
                          AVEncoderBitRateKey : 320000,
                          AVNumberOfChannelsKey : 2,
                          AVSampleRateKey : 44100.0 ] as [String : Any]

    var error : NSError?

    func getCacheDirectory() -> String {
        let paths = NSSearchPathForDirectoriesInDomains(.cachesDirectory,.userDomainMask, true)

        return paths [0]
    }

    func getFileURL() -> URL {
        let path = (getCacheDirectory() as NSString).strings(byAppendingPaths: ["fileName"])
        let filePath = URL(fileURLWithPath: "path")
        return filePath
    }

    // Error on the following line
    soundRecorder = try AVAudioRecorder(url: getFileURL() as URL, settings: recordSettings, error: &error)


    if let err = error {
        NSLog("There was an error")
    }
    else {
        soundRecorder.delegate = self
        soundRecorder.prepareToRecord()
    }

Answer 1

在Swift中，您不提供error参数，因为它是throws。

改变这一点：

soundRecorder = try AVAudioRecorder(url: getFileURL() as URL, settings: recordSettings, error: &error)

至：

soundRecorder = try AVAudioRecorder(url: getFileURL() as URL, settings: recordSettings)