来自 URL 的 AVPlayerItem 未播放
AVPlayerItem from URL not playing
我正在尝试播放使用 Alamofire 下载的数据文件中的 mp3。这首歌很好,我可以用 AVAudioPlayer(data: Data) 播放它。我应该如何使用 AVPlayer 播放相同的数据文件?我找不到如何从数据创建 PlayerItem 或从数据创建 AVAsset。
另外,我有歌曲路径的 url,但是 URL 不能以某种方式与 AVPlayer 一起使用。只是没有播放音乐。
func startSong(withIndex: Int) {
if let item = getItem(atIndex: withIndex) {
do {
try AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryPlayback)
print("AVAudioSession Category Playback OK")
do {
try AVAudioSession.sharedInstance().setActive(true)
print("AVAudioSession is Active")
} catch let error as NSError {
print(error.localizedDescription)
}
let playerItem = item
self.player = AVPlayer(playerItem: playerItem)
} catch let error as NSError {
print(error.localizedDescription)
}
}
}
func getItem(atIndex: Int) -> AVPlayerItem? {
var item: AVPlayerItem
var url: URL
let song = playlist.getSong(index: atIndex)
if PlaylistsService.sharedService.isFileDownloaded(inPath: SongPath.Offline(id: (song?.getID())!).path()) {
url = URL(fileURLWithPath: SongPath.Offline(id: (song?.getID())!).path())
} else if PlaylistsService.sharedService.isFileDownloaded(inPath: SongPath.Temp(id: (song?.getID())!).path()) {
url = URL(fileURLWithPath: SongPath.Temp(id: (song?.getID())!).path())
} else {
self.downloadSong(song: song!)
url = URL(fileURLWithPath: SongPath.Temp(id: (song?.getID())!).path())
}
item = AVPlayerItem(url: url)
return item
}
@IBAction func playPause(_ sender: UIButton) {
sender.isSelected = !sender.isSelected
if sender.isSelected {
print("Play")
self.player.play()
} else {
print("Pause")
self.player.pause()
}
}
刚发现 AVPlayerItem 无法从 URL 创建指向数据文件的对象。例如,您需要 URL 文件扩展名为“.mp3”。当我将扩展添加到下载和播放路径时,现在一切正常。
我正在尝试播放使用 Alamofire 下载的数据文件中的 mp3。这首歌很好,我可以用 AVAudioPlayer(data: Data) 播放它。我应该如何使用 AVPlayer 播放相同的数据文件?我找不到如何从数据创建 PlayerItem 或从数据创建 AVAsset。 另外,我有歌曲路径的 url,但是 URL 不能以某种方式与 AVPlayer 一起使用。只是没有播放音乐。
func startSong(withIndex: Int) {
if let item = getItem(atIndex: withIndex) {
do {
try AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryPlayback)
print("AVAudioSession Category Playback OK")
do {
try AVAudioSession.sharedInstance().setActive(true)
print("AVAudioSession is Active")
} catch let error as NSError {
print(error.localizedDescription)
}
let playerItem = item
self.player = AVPlayer(playerItem: playerItem)
} catch let error as NSError {
print(error.localizedDescription)
}
}
}
func getItem(atIndex: Int) -> AVPlayerItem? {
var item: AVPlayerItem
var url: URL
let song = playlist.getSong(index: atIndex)
if PlaylistsService.sharedService.isFileDownloaded(inPath: SongPath.Offline(id: (song?.getID())!).path()) {
url = URL(fileURLWithPath: SongPath.Offline(id: (song?.getID())!).path())
} else if PlaylistsService.sharedService.isFileDownloaded(inPath: SongPath.Temp(id: (song?.getID())!).path()) {
url = URL(fileURLWithPath: SongPath.Temp(id: (song?.getID())!).path())
} else {
self.downloadSong(song: song!)
url = URL(fileURLWithPath: SongPath.Temp(id: (song?.getID())!).path())
}
item = AVPlayerItem(url: url)
return item
}
@IBAction func playPause(_ sender: UIButton) {
sender.isSelected = !sender.isSelected
if sender.isSelected {
print("Play")
self.player.play()
} else {
print("Pause")
self.player.pause()
}
}
刚发现 AVPlayerItem 无法从 URL 创建指向数据文件的对象。例如,您需要 URL 文件扩展名为“.mp3”。当我将扩展添加到下载和播放路径时,现在一切正常。