在X code7播放音频 [英] Playing Audio in Xcode7

问题描述

我只是想，当我点击一个按钮来播放音频，但我得到一个错误这条线code的。

I'm simply trying to play audio when I tap a button, but I get an error with this line of code.

ButtonAudioPlayer = AVAudioPlayer(contentsOfURL: ButtonAudioURL, error: nil)

这是我的整个code：

This is my whole code:

import UIKit
import AVFoundation

class ViewController: UIViewController {

var ButtonAudioURL = NSURL(fileURLWithPath:NSBundle.mainBundle().pathForResource("Audio File 1", ofType: "mp3")!)

var ButtonAudioPlayer = AVAudioPlayer()



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

    ButtonAudioPlayer = AVAudioPlayer(contentsOfURL: ButtonAudioURL, error:       nil)

}


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

@IBAction func playAudio1(sender: UIButton) {


}

}

该错误是

在调用不正确的参数标签（有'contentsOfURL：错误：'，预计'contentsOfURL：fileTypeHint：'）。

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

当我改变错误fileTypeHint，它仍然无法正常工作。

When I change error to fileTypeHint, it still does not work.

推荐答案

您需要通过更改该行，以使用新雨燕2语法

You need to use the new Swift 2 syntax by changing that line to

ButtonAudioPlayer = try! AVAudioPlayer(contentsOfURL: ButtonAudioURL)

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