ios - AVAudioRecorder 不工作

Question

无法获取 AVAudioRecorder 与 URL 配合使用的代码。有人能够在 iOS 和 Swift 3 上录制音频吗？下面的粗体文本是我收到以下错误的地方:

"Cannot invoke initializer for type 'AVAudioRecorder' with an argument list of type '(url: URL, settings..."

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，您无需提供 error 参数，因为它会抛出。

更改此:

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

至:

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