如何在 iOS Swift 中从 URL 播放 mp3 音频？

我收到 mp3 url 作为 API 调用的响应。

我想播放该音频，那么我该怎么做呢？

这是我的回应

{
    content = "En este primer programa se tratar\U00e1n asuntos tan importante como este y aquel sin descuidar un poco de todo lo dem\U00e1s";
    file = "http://radio.spainmedia.es/wp-content/uploads/2015/12/ogilvy.mp3";
    image = "http://radio.spainmedia.es/wp-content/uploads/2015/12/tapas.jpg";
    number = 0001;
    subtitle = Titulareando;
    title = "Tapa 1";
}

这是我的代码：

 @IBAction func btnplayaudio(sender: AnyObject) {
    let urlstring = "http://radio.spainmedia.es/wp-content/uploads/2015/12/tailtoddle_lo4.mp3"
    let url = NSURL(string: urlstring)
    print("the url = \(url!)")
    
    play(url!)

}

func play(url:NSURL) {
    print("playing \(url)")
    
    do {
        self.player = try AVAudioPlayer(contentsOfURL: url)
        player.prepareToPlay()
        player.volume = 1.0
        player.play()
    } catch let error as NSError {
        self.player = nil
        print(error.localizedDescription)
    } catch {
        print("AVAudioPlayer init failed")
    }
    
}

我哪里错了？

Use AVPlayer https://developer.apple.com/library/ios/documentation/AVFoundation/Reference/AVPlayer_Class/而不是 AVAudioPlayer 来播放远程内容。根据文档 AVAudioPlayer 需要 mp3 文件才能播放音频。 AVAudioPlayer 不提供支持流媒体 https://developer.apple.com/library/ios/qa/qa1634/_index.html.

试试这个代码，它对我来说工作正常

func play(url:NSURL) {
    print("playing \(url)")

    do {

        let playerItem = AVPlayerItem(URL: url)

        self.player = try AVPlayer(playerItem:playerItem)
        player!.volume = 1.0
        player!.play()
    } catch let error as NSError {
        self.player = nil
        print(error.localizedDescription)
    } catch {
        print("AVAudioPlayer init failed")
    }
}

请记住在 info.plist 文件中设置应用程序传输安全性（ATS）。

<key>NSAppTransportSecurity</key>
    <dict>
        <key>NSAllowsArbitraryLoads</key>
        <true/>
    </dict>