SKAudioNode不从url加载声音

Question

我想从url下载声音并播放一次：

let sound = SKAudioNode(url:URL(string:"http://www.music.helsinki.fi/tmt/opetus/uusmedia/esim/a2002011001-e02-16kHz.wav")!)

sound.run(SKAction.play())

我也试过.mp3音乐。它不下载它或流并返回：nil

但此代码会导致错误：

终止应用程序的原因是：“所需条件为false: file != nil”*第一次抛出调用堆栈：. libc++abi.dylib:以NSException类型的未明确例外结束

Answer 1

我想你试过AVAudioPlayer

var resourcePath = url  //your url
var objectData = Data(contentsOf: NSURL(string: resourcePath)!)
var error: Error!
do {
    audioPlayer = try AVAudioPlayer(objectData)
}
catch let error {
}
audioPlayer.numberOfLoops = 0
audioPlayer.volume = 1.0
audioPlayer.prepareToPlay()
if audioPlayer == nil {
    print("\(error.description)")
}
else {
    audioPlayer.play()
}

Answer 2

我认为URL需要为您在应用程序包中必须拥有的资源提供URL。将mp3文件放入项目中，然后执行以下操作-

let urlpath = Bundle.main.path(forResource: "[name of file]", ofType: "mp3")
let audioURL = NSURL.fileURL(withPath: urlpath!)

let sound = SKAudioNode(url: audioURL)

sound.run(SKAction.play())