我在下面创建了一个 AVAudioPlayer 的对象类来播放噪音：
class MusicAudio: NSObject, AVAudioPlayerDelegate {
var bassAudio : AVAudioPlayer! = AVAudioPlayer()
override init() {
super.init()
let bassAudioPath = NSBundle.mainBundle().pathForResource("Raw", ofType:"mp3")
let fileURL = NSURL(fileURLWithPath: bassAudioPath!)
bassAudio = AVAudioPlayer(contentsOfURL: fileURL, error: nil)
bassAudio.currentTime = 0
bassAudio.volume = 1.0
bassAudio.delegate = self
}
func adjustAudioLayerState(volumeOn:Bool, layer:AudioLayerState) {
if layer == AudioLayerState.Bass {
self.bassAudio.prepareToPlay()
self.bassAudio.play()
}
}
}
为了播放噪音，我通过以下方式致电课程：
@IBAction func testSound() {
var sound:MusicAudio = MusicAudio()
sound.adjustAudioLayerState(true, layer: AudioLayerState.Bass)
}
但是我没有播放任何音频，有人发现我的实现有问题吗？
编辑：rdelmar 回答后
var bassAudio : AVAudioPlayer! = AVAudioPlayer()
class MusicAudio: NSObject, AVAudioPlayerDelegate {
override init() {
super.init()
let bassAudioPath = NSBundle.mainBundle().pathForResource("Raw", ofType:"mp3")
let fileURL = NSURL(fileURLWithPath: bassAudioPath!)
bassAudio = AVAudioPlayer(contentsOfURL: fileURL, error: nil)
bassAudio.currentTime = 0
bassAudio.volume = 1.0
bassAudio.delegate = self
}
func adjustAudioLayerState(volumeOn:Bool, layer:AudioLayerState) {
if layer == AudioLayerState.Bass {
self.bassAudio.prepareToPlay()
self.bassAudio.play()
}
}
}
1 回答
您没有收到任何声音，因为您的 MusicAudio 类正在被释放。你需要制作 var，sound，属性，而不是局部变量。