我刚刚从 AVAudioPlayer 切换到 AVPlayer，我正在检查我的旧功能并进行适当的调整。 AVPlayer 用于使用 URL 播放远程音频文件。当我选择要播放和暂停的文件时，一切正常。但是，当我想继续播放暂停的文件时，即使我看到正在调用播放功能，播放器也不会播放。我设置了一个观察者来知道玩家何时完成播放，以便播放/暂停按钮可以切换，我注意到观察者在我按下暂停后被调用。这不应该发生，因为玩家还没有玩完对吗？不管怎样，我设置了断点，一切都被正确调用了。知道为什么 AVPlayer 在暂停后不会继续播放吗？
var playerItem: AVPlayerItem?
var newPlayer: AVPlayer?
var trackIDplaying: Int?
func playPausePressed(_ sender:UIButton)
{
if let selectedTrackID = trackIDplaying
{
do
{
try AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryPlayback)
try AVAudioSession.sharedInstance().setActive(true)
if selectedTrackID == track.trackId
{
//if playing, then pause. If not playing, then play
if (self.newPlayer!.rate != 0)
{
self.newPlayer!.pause()
self.isPaused = true
}
else
{
if self.newPlayer!.currentItem != nil
{
self.newPlayer!.play()
print(self.newPlayer!.currentItem)
}
}
}
else
{
//If song is playing, switch to new song
let trackURL = URL(string: track.preSignedURL!)
trackIDplaying = track.trackId
self.playerItem = AVPlayerItem(url: trackURL!)
NotificationCenter.default.addObserver(self, selector: #selector((HomeController.playerDidFinishPlaying)), name: NSNotification.Name.AVPlayerItemDidPlayToEndTime, object: self.playerItem)
self.newPlayer = AVPlayer(playerItem: self.playerItem!)
self.newPlayer!.play()
}
}
catch let error1 as NSError
{
error = error1
self.newPlayer = nil
}
}
else
{
do
{
//play selected song if no other songs are playing
let trackURL = URL(string: track.preSignedURL!)
print(trackURL!)
self.playerItem = AVPlayerItem(url: trackURL!)
NotificationCenter.default.addObserver(self, selector: #selector((HomeController.playerDidFinishPlaying)), name: NSNotification.Name.AVPlayerItemDidPlayToEndTime, object: self.playerItem)
self.newPlayer = AVPlayer(playerItem: self.playerItem!)
self.newPlayer!.play()
self.trackIDplaying = track.trackId
}
}
if let err = error
{
print("audio player error \(err.localizedDescription)", terminator: "")
}
}
func playerDidFinishPlaying(note: NSNotification) {
guard let indexPath = self.playingAudioIndexPath, let cell = self.audioTable.cellForRow(at: indexPath) as? AudioCell else {
return;
}
cell.playButton.isSelected = false
self.playingAudioIndexPath = nil
}
最佳答案
尝试仅在 viewDidLoad() 或 viewWillAppear() 中添加观察者 对于这类问题，添加观察者应该一次性完成。
如果您还有任何问题，请随时问我。
关于ios - AVPlayer 暂停后不会继续播放，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/40077975/