Question

我需要将代码从AVAudioPlayer更改为AVPlayer，因为它支持快退，而AVAudioPlayer则不支持。我遇到了这四行代码的问题，这些代码寻找使用滑块播放的音频。这是我的代码：

func changeAudioTime() {

    //musicPlayer is declared as AVAudioPlayer and I want to change it to  AVPlayer and I named the variable player

    musicPlayer.prepareToPlay()
    musicPlayer.currentTime = NSTimeInterval(slider.value)
    musicPlayer.numberOfLoops = -1
    slider.value = Float(musicPlayer.currentTime)

}

Answer 1

在这两种情况下都可以设置时间：

self.player.seekToTime(CMTimeMake(Int64(slider.value),1))
slider.value = Float(CMTimeGetSeconds(self.player.currentTime()))

对于循环你可以尝试这样，因为没有直接的循环方法，直到你想重复你可以设置标志/观察者并重复歌曲如果重复关闭你不能执行观察者/寻求

NSNotificationCenter.defaultCenter().addObserver(self,
selector: "playerItemDidReachEnd:",name: AVPlayerItemDidPlayToEndTimeNotification,
object: self.player.currentItem)

func playerItemDidReachEnd(notification: NSNotification) {
    self.player.seekToTime(kCMTimeZero)
    self.player.play()
}

我如何将这四行代码从AVAudioPlayer转换为AVPlayer？

1 个答案: