我正在尝试在用户输入背景时播放声音：
#mydiv{
..
..
..
//Your Css for for a particular <div>
..
..
}
let dispatchQueue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0)
dispatch_async(dispatchQueue, {[weak self] in
var audioSessionError: NSError?
let audioSession = AVAudioSession.sharedInstance()
NSNotificationCenter.defaultCenter().addObserver(self!, selector: "handleInterruption:", name: AVAudioSessionInterruptionNotification, object: nil)
audioSession.setActive(true, error: nil)
if (audioSession.setCategory(AVAudioSessionCategoryPlayback, error: &audioSessionError)) {
println("Successfully set the audio session")
} else {
println("Could not set the audio session")
}
let filePath = NSBundle.mainBundle().pathForResource("sound", ofType:"mp3")
let fileData = NSData(contentsOfFile: filePath!, options: .DataReadingMappedIfSafe, error: nil)
var error:NSError?
self!.audioPlayer = AVAudioPlayer(data: fileData, error: &error)
self!.audioPlayer?.numberOfLoops = -1
self!.audioPlayer?.delegate = self
if (self?.audioPlayer?.prepareToPlay() != false) {
println("Successfully prepared for playing")
} else {
println("Failed to prepare for playing")
}
})
if (self.audioPlayer?.play() != false) {
println("Successfully started playing")
} else {
println("Failed to Play")
}
和player.prepareToPlay()，他们返回player.play()。但实际上没有声音。如果我在其他地方运行它，它就可以了。请帮帮我。我添加了背景音频模式。