AVAudioSession激活问题

我收到以下错误：

[0x19bf89310] AVAudioSession.mm:646： – [AVAudioSession setActive：withOptions：error：]：取消激活正在运行I / O的audio会话。 在停用audio会话之前，应该停止或暂停所有I / O。

我已阅读这篇文章：

• iOS8 AVAudioSession setActive错误

然而，那里的解决scheme并没有解决我的问题。 这是：

• 小应用（游戏）
• audio背景音乐在AudioHelper.swift中处理
• 用SKActino.playSoundFile播放额外的“blip”声音

再生产

• 开始游戏（背景音乐开始播放）
• closures游戏（音乐停止）
• 重新开始游戏（音乐重新开始）
• 出现以上错误
• SKAction.playSoundFile不总是工作了（有些做，有些则不）

我的audio处理代码（又名AudioHelper.swift）

 class AudioHelper: NSObject, AVAudioPlayerDelegate { var player : AVAudioPlayer? class var defaultHelper : AudioHelper { struct Static { static let instance : AudioHelper = AudioHelper() } return Static.instance } override init() { super.init() } func initializeAudio() { var url = NSURL(fileURLWithPath: NSBundle.mainBundle().pathForResource("sound_float", ofType: ".mp3")!) self.player = AVAudioPlayer(contentsOfURL: url, error: nil) self.player?.numberOfLoops = -1 self.player?.play() } func stopAudio() { self.player?.stop() self.player?.prepareToPlay() AVAudioSession.sharedInstance().setActive(false, error: nil) } func startAudio() { AVAudioSession.sharedInstance().setActive(true, error: nil) self.player?.play() } func audioPlayerDidFinishPlaying(player: AVAudioPlayer!, successfully flag: Bool) { self.stopAudio() } } 

我正在初始化和暂停，并开始通过AppDelegate

 class AppDelegate: UIResponder, UIApplicationDelegate { var window: UIWindow? func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool { AudioHelper.defaultHelper.initializeAudio() return true } func applicationWillResignActive(application: UIApplication) { // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state. // Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game. AudioHelper.defaultHelper.stopAudio() } func applicationDidBecomeActive(application: UIApplication) { // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface. AudioHelper.defaultHelper.startAudio() } } 

我哪里错了？

Answer 1

我不得不将setActive(false0)移动到委托方法。 新的助手类看起来像这样：

 import Foundation import AVFoundation class AudioHelper: NSObject, AVAudioPlayerDelegate { var player : AVAudioPlayer? class var defaultHelper : AudioHelper { struct Static { static let instance : AudioHelper = AudioHelper() } return Static.instance } override init() { super.init() } func initializeAudio() { var url = NSURL(fileURLWithPath: NSBundle.mainBundle().pathForResource("sound_float", ofType: ".mp3")!) self.player = AVAudioPlayer(contentsOfURL: url, error: nil) self.player?.numberOfLoops = -1 self.player?.play() } func stopAudio() { self.player?.stop() self.player?.prepareToPlay() } func startAudio() { AVAudioSession.sharedInstance().setActive(true, error: nil) self.player?.play() } func audioPlayerDidFinishPlaying(player: AVAudioPlayer!, successfully flag: Bool) { AVAudioSession.sharedInstance().setActive(false, error: nil) } } 

现在工作