我试过这样做:
let soundFilePath = NSBundle.mainBundle().pathForResource("GL006_SNES_Victory_loop.aif", ofType: "GL006_SNES_Victory_loop.aif")
let soundFileURL = NSURL(fileURLWithPath: soundFilePath!)
let player = AVAudioPlayer(contentsOfURL: soundFileURL, fileTypeHint: nil)
player.numberOfLoops = -1 //infinite
player.play()
我将此代码放在didMoveToView函数中,我的代码顶部有import AVFoundation
。我收到错误:
Call can throw, but it is not marked with 'try' and the error is not handled
。
提前谢谢!
答案 0 :(得分:3)
(Xcode 8和Swift 3)
使用SpriteKit非常简单。您使用声音文件创建SKAudioNote,然后将其作为孩子附加到场景中。它将默认循环:
override func didMove(to view: SKView) {
let backgroundSound = SKAudioNode(fileNamed: "bg.mp3")
self.addChild(backgroundSound)
}
如果您想在某些时候停止背景音乐,可以使用内置方法:
backgroundSound.run(SKAction.stop())
或许你想在停止后再次播放声音:
backgroundSound.run(SKAction.play())
SpriteKit让这很简单。我希望这会对你有所帮助。
答案 1 :(得分:2)
在Swift 2中,类型NSErrorPointer
的参数被省略,可以在catch
块中捕获,如下所示:
do
{
let player = try AVAudioPlayer(contentsOfURL: soundFileURL, fileTypeHint: nil)
}
catch let error as NSError
{
print(error.description)
}
附录:
最好将您的AVAudioPlayer
声明为ivar;否则,它可能被释放,因此音乐将无法播放:
class yourViewController: UIViewController
{
var player : AVAudioPlayer!
....
因此,鉴于此,我们对前面提到的try-catch
进行了一些小改动:
do
{
player = try AVAudioPlayer(contentsOfURL: soundFileURL, fileTypeHint: nil)
}
catch let error as NSError
{
print(error.description)
}
<强> 编辑: 强>
你最初拥有的东西:
let soundFilePath = NSBundle.mainBundle().pathForResource("GL006_SNES_Victory_loop.aif", ofType: "GL006_SNES_Victory_loop.aif")
let soundFileURL = NSURL(fileURLWithPath: soundFilePath!)
let player = AVAudioPlayer(contentsOfURL: soundFileURL, fileTypeHint: nil)
player.numberOfLoops = -1 //infinite
player.play()
特此在Swift 2中添加catch
子句:
let soundFilePath = NSBundle.mainBundle().pathForResource("GL006_SNES_Victory_loop.aif", ofType: "GL006_SNES_Victory_loop.aif")
let soundFileURL = NSURL(fileURLWithPath: soundFilePath!)
do
{
player = try AVAudioPlayer(contentsOfURL: soundFileURL, fileTypeHint: nil)
}
catch let error as NSError
{
print(error.description)
}
player.numberOfLoops = -1 //infinite
player.play()
假设您的类是SKScene
的子类:
class yourGameScene: SKScene
{
//declare your AVAudioPlayer ivar
var player : AVAudioPlayer!
//Here is your didMoveToView function
override func didMoveToView(view: SKView)
{
let soundFilePath = NSBundle.mainBundle().pathForResource("GL006_SNES_Victory_loop.aif", ofType: "GL006_SNES_Victory_loop.aif")
let soundFileURL = NSURL(fileURLWithPath: soundFilePath!)
do
{
player = try AVAudioPlayer(contentsOfURL: soundFileURL, fileTypeHint: nil)
}
catch let error as NSError
{
print(error.description)
}
player.numberOfLoops = -1 //infinite
player.play()
//The rest of your other codes
}
}