swift - 向 iOS 应用程序添加声音

Question

我正在尝试将声音添加到我正在编写的 iOS 应用程序中。我不断收到错误消息

"Incorrect argument label in call (have 'contentsOfURL:error:', expected "contentsOfURL:fileTypeHint:')".

我尝试过以多种方式修改它，但无法构建它。这是我的代码:

import UIKit  import AVFoundation

class ViewController: UIViewController {

    var Setup = NSURL(fileURLWithPath: NSBundle.mainBundle().pathForResource("DMSetup", ofType: "mp3")!)
    var audioPlayer = AVAudioPlayer()

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

        audioPlayer = AVAudioPlayer(contentsOfURL: Setup, error: nil)
        audioPlayer.prepareToPlay()

    }

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

    @IBAction func PlayKeySetup(sender: UIButton) {
        audioPlayer.play()
    }


}

有什么建议吗？我是这方面的新手，所以我确定我遗漏了一些明显的东西。xCode 7.3.1, OSX 10.11.4

谢谢。

Answer 1

试试这段代码:

var audioPlayer: AVAudioPlayer!

let path = NSBundle.mainBundle().pathForResource("yourfilename", ofType: "format")

let CREATE_ANY_VARIABLE = NSURL(fileURLWithPath: path!)

do {
        try audioPlayer = AVAudioPlayer(contentsOfURL: CREATE_ANY_VARIABLE)

} catch let error as NSError {
        print(error.debugDescription)
    }


audioPlayer.prepareToPlay()

然后就可以在函数的任何地方玩了!您代码中的问题是您的 var Setup 的名称与 AVFoundation 中的另一个 Setup 方法重叠