我正在使用此代码播放音频。我的代码在所有耳机型号的 iOS 14 上都能正常工作，但是当客户将他们的设备更新到 iOS 15 并使用 AirPods Pro 时，没有音频文件播放。在其他 AirPods 型号上以及通过 iPhone 扬声器播放音频文件时，一切正常。发生了什么。如何解决？
更新：
经过漫长的等待，我得到了 AirPods Pro。起初我删除了那条线setupMediaPlayerNotificationView(true)，应用程序播放的声音很好。但是锁定屏幕上的一些功能被删除了。应用程序中的这条线没有声音。在 App Store 中，我有 3 个具有相同代码的应用程序。在 ios 15 之后，只有一个工作。而且我不明白代码相同的原因是什么。为什么其他人不工作？但事实证明，该应用程序的名称中有 1 个单词 - Build Settings -> Product Name -> "myAppName". 其余的人说了几句话。当我将它们重命名为 1 个字时，一切正常。声音播放不错。它以前如何？我还是不明白？谁有版本，分享一下。
代码：
let url = Bundle.main.url(forResource: "\(masterIndex)0", withExtension: "m4a")!
do {
audioPlayer = try AVAudioPlayer(contentsOf: url)
audioPlayer.delegate = self
audioPlayer.prepareToPlay()
play(sender:AnyObject.self as AnyObject)
setupMediaPlayerNotificationView(true)
lockScreen()
} catch {
}
其他代码：
func lockScreen() {
var albumArtwork : MPMediaItemArtwork!
let image:UIImage = UIImage(named: "infoImage")!
albumArtwork = MPMediaItemArtwork.init(boundsSize: image.size, requestHandler: { (size) -> UIImage in
return image
})
let infotitle = "\(firstArray[index])"
MPNowPlayingInfoCenter.default().nowPlayingInfo = [
MPMediaItemPropertyArtist : "",
MPMediaItemPropertyTitle : infotitle,
MPMediaItemPropertyArtwork : albumArtwork,
MPMediaItemPropertyAlbumTitle : "",
MPNowPlayingInfoPropertyElapsedPlaybackTime : Int(audioPlayer.currentTime),
MPMediaItemPropertyPlaybackDuration: Int(audioPlayer.duration)]
}
@objc func lockScreenPlay(_ event: MPRemoteCommandEvent) -> MPRemoteCommandHandlerStatus {
self.audioPlayer.play()
self.lockScreen()
self.playButton.setImage(UIImage(named: "pause.png"), for: UIControlState.normal)
return .success
}
@objc func lockScreenPause(_ event: MPRemoteCommandEvent) -> MPRemoteCommandHandlerStatus {
self.audioPlayer.pause()
self.lockScreen()
self.playButton.setImage(UIImage(named: "play.png"), for: UIControlState.normal)
return .success
}
@objc func lockScreenFastForward(_ event: MPRemoteCommandEvent) -> MPRemoteCommandHandlerStatus {
var time: TimeInterval = audioPlayer.currentTime
time += 15.0
if time > audioPlayer.duration {
audioPlayerDidFinishPlaying(audioPlayer, successfully: true)
} else {
audioPlayer.currentTime = time
updateTime()
}
self.lockScreen()
return .success
}
@objc func lockScreenFastBackward(_ event: MPRemoteCommandEvent) -> MPRemoteCommandHandlerStatus {
var time: TimeInterval = audioPlayer.currentTime
time -= 15.0
if time < 0 {
audioPlayer.currentTime = 0
updateTime()
} else {
audioPlayer.currentTime = time
updateTime()
}
self.lockScreen()
return .success
}
@objc func changedThumbSlider(_ event: MPChangePlaybackPositionCommandEvent) -> MPRemoteCommandHandlerStatus {
let time = event.positionTime
audioPlayer.currentTime = TimeInterval(time)
self.lockScreen()
return .success
}
func setupMediaPlayerNotificationView(_ enable: Bool) {
let commandCenter = MPRemoteCommandCenter.shared()
if enable {
commandCenter.playCommand.addTarget(self, action: #selector(lockScreenPlay))
commandCenter.pauseCommand.addTarget(self, action: #selector(lockScreenPause))
commandCenter.skipForwardCommand.preferredIntervals = [15]
commandCenter.skipForwardCommand.addTarget(self, action: #selector(lockScreenFastForward))
commandCenter.skipBackwardCommand.preferredIntervals = [15]
commandCenter.skipBackwardCommand.addTarget(self, action: #selector(lockScreenFastBackward))
commandCenter.changePlaybackPositionCommand.addTarget(self, action: #selector(self.changedThumbSlider(_:)))
} else {
commandCenter.playCommand.removeTarget(self, action: #selector(lockScreenPlay))
commandCenter.pauseCommand.removeTarget(self, action: #selector(lockScreenPause))
commandCenter.skipForwardCommand.removeTarget(self, action: #selector(lockScreenFastForward))
commandCenter.skipBackwardCommand.removeTarget(self, action: #selector(lockScreenFastBackward))
commandCenter.changePlaybackPositionCommand.removeTarget(self, action: #selector(self.changedThumbSlider(_:)))
}
}
@IBAction func play(sender: AnyObject) {
if !audioPlayer.isPlaying{
animationStatus()
audioPlayer.play()
slider.maximumValue = Float(audioPlayer.duration)
timer = Timer(timeInterval: 0.1, target: self, selector: #selector(self.updateTime), userInfo: nil, repeats: true)
RunLoop.main.add(timer!, forMode: .commonModes)
restorePlayerCurrentTime()
playButton.setImage(UIImage(named: "pause.png"), for: UIControlState.normal)
} else {
animationStatus()
audioPlayer.pause()
playButton.setImage(UIImage(named: "play.png"), for: UIControlState.normal)
timer?.invalidate()
}
}
@IBAction func fastForward(sender: AnyObject) {
var time: TimeInterval = audioPlayer.currentTime
time += 15.0 // Go Forward by 15 Seconds
if time > audioPlayer.duration {
audioPlayerDidFinishPlaying(audioPlayer, successfully: true)
} else {
audioPlayer.currentTime = time
updateTime()
}
self.lockScreen()
}
@IBAction func fastBackward(sender: AnyObject) {
var time: TimeInterval = audioPlayer.currentTime
time -= 15.0 // Go Back by 15 Seconds
if time < 0 {
audioPlayer.currentTime = 0
updateTime()
} else {
audioPlayer.currentTime = time
updateTime()
}
self.lockScreen()
}
private func restorePlayerCurrentTime() {
let currentTimeFromUserDefaults : Double? = UserDefaults.standard.value(forKey: "currentTime\(masterIndex)\(index)") as! Double?
if let currentTimeFromUserDefaultsValue = currentTimeFromUserDefaults {
audioPlayer.currentTime = currentTimeFromUserDefaultsValue
slider.value = Float.init(audioPlayer.currentTime)
}
}
@objc func updateTime() {
let currentTime = Int(audioPlayer.currentTime)
let minutes = currentTime/60
let seconds = currentTime - minutes * 60
let durationTime = Int(audioPlayer.duration) - Int(audioPlayer.currentTime)
let minutes1 = durationTime/60
let seconds1 = durationTime - minutes1 * 60
timeElapsed.text = NSString(format: "%02d:%02d", minutes,seconds) as String
timeDuration.text = NSString(format: "-%02d:%02d", minutes1,seconds1) as String
UserDefaults.standard.set(currentTime, forKey: "currentTime\(masterIndex)\(index)")
UserDefaults.standard.set(durationTime, forKey: "durationTime\(masterIndex)\(index)")
slider.value = Float.init(audioPlayer.currentTime)
}
func audioPlayerDidFinishPlaying(_ audioPlayer: AVAudioPlayer, successfully flag: Bool) {
let currentTime = 0
let durationTime = 0.1
UserDefaults.standard.set(currentTime, forKey: "currentTime\(masterIndex)\(index)")
UserDefaults.standard.set(durationTime, forKey: "durationTime\(masterIndex)\(index)")
slider.value = Float.init(audioPlayer.currentTime)
timer?.invalidate()
let path = NSSearchPathForDirectoriesInDomains(FileManager.SearchPathDirectory.documentDirectory, FileManager.SearchPathDomainMask.userDomainMask, true)
let documentDirectoryPath:String = path[0]
let fileManager = FileManager()
let destinationURLForFile = URL(fileURLWithPath: documentDirectoryPath.appendingFormat("/\(masterIndex)/\(index+1).mp3"))
if fileManager.fileExists(atPath: destinationURLForFile.path){
if endOfChapterSleepTimer == true {
endOfChapterSleepTimer = false
} else {
index = index + 1
viewDidLoad()
}
} else {
}
}
func animationStatus() {
let vinylLayer = vinylView.layer
pause = !pause
if pause {
pauseLayer(layer: vinylLayer)
} else {
if vinylStatus == "true" {
resumeLayer(layer: vinylLayer)
} else {
rotateImageView()
resumeLayer(layer: vinylLayer)
}
}
}
private func rotateImageView() {
vinylStatus = "true"
UIView.animate(withDuration: 3, delay: 0, options: .curveLinear, animations: {
self.vinylView.transform = self.vinylView.transform.rotated(by: .pi / 2)
}) { (finished) in
if finished {
self.rotateImageView()
}
}
}