StreamingKit是一個適用于iOS和Mac OSX的音頻播放流媒體庫。提供了一個簡潔的面向對象API，簡單易用,用于在CoreAudio框架下進行音頻的解壓和播放處理。StreamingKit是唯一支持不同格式音頻文件無縫播放的音頻播放流媒體庫。github地址:https://github.com/tumtumtum/StreamingKit

簡單的介紹一下使用:

定義STKAudioPlayer屬性audioPlayer 并在viewDidLoad中初始化,設置代理.

audioPlayer = STKAudioPlayer()
audioPlayer.delegate = self

播放暫停按鈕的點擊事件:

dynamic func playOrPause(sender:UIButton){
    //1.開啟播放
    //2.暫停播放
    //3.繼續播放
    //4.重新播放
    if firstPlay == true { //1、4
        let urll = NSURL(string: musicModel.videoUrl)
        if let musicPlayUrl = urll{
            audioPlayer.playURL(musicPlayUrl)
            print("__________這是音頻播放的url_______\(musicPlayUrl)__________")
        }
        //設置定時器顯示進度
        timer = NSTimer(timeInterval: 0.1, target: self, selector: #selector(track), userInfo: nil, repeats: true)
        //            timer.fire()
        NSRunLoop.currentRunLoop().addTimer(timer, forMode: NSRunLoopCommonModes)
        
        //后臺控制面板信息
        newMusicInfo()
        
        self.firstPlay = false
    
    }else{
        if self.audioPlayer.state.rawValue ==  3{
             //暫停
            audioPlayer.pause()
        }else{
            //繼續
            audioPlayer.resume()
        }
        
    }
}

定時器方法:(自定義部分可忽略不看,大致就是實時獲取音樂當前的播放時間與總時間并賦值給界面)

 dynamic func track(){
    //        print("******總時間********\(self.audioPlayer.duration)++++++")
    //        print("******播放進度********\(self.audioPlayer.progress)++++++")
    let formatter = NSDateFormatter()
    formatter.dateFormat = "mm:ss"
    let elapsedTimeDate = NSDate(timeIntervalSince1970: audioPlayer.progress)
    self.musicPlayerView.currentLabel.text = formatter.stringFromDate(elapsedTimeDate)
    let timeRemainingDate = NSDate(timeIntervalSince1970: audioPlayer.duration)
    self.musicPlayerView.totalLabel.text = formatter.stringFromDate(timeRemainingDate)
    self.musicPlayerView.progressSlider.value =  Float(audioPlayer.progress)
    self.musicPlayerView.progressSlider.maximumValue = Float(audioPlayer.duration)
    if audioPlayer.progress == audioPlayer.duration-0.01{
        audioPlayer.stop()
        self.musicPlayerView.currentLabel.text = "00:00"
        self.musicPlayerView.totalLabel.text = "00:00"
        self.musicPlayerView.progressSlider.value = 0
        self.firstPlay = true
    }
}

底部進度條(自定義UISlider)拖動實現的方法:[邏輯是先暫停,再通過seekToTime方法到指定進度,然后繼續]

  dynamic func sliderDown(slider:UISlider){
    audioPlayer.pause()
}
  dynamic func sliderTouchUpInside(slider:UISlider){
    print("+++++拖動值+++++\(Double(slider.value))+++")
    audioPlayer.seekToTime(Double(slider.value))
    audioPlayer.resume()
}

最后羅列一下必須實現的代理STKAudioPlayerDelegate

extension MusicDetailViewController: STKAudioPlayerDelegate {
dynamic func audioPlayer(audioPlayer: STKAudioPlayer, didStartPlayingQueueItemId queueItemId: NSObject) {

}
//typedef NS_OPTIONS(NSInteger, STKAudioPlayerState)
//{
// STKAudioPlayerStateReady,
//STKAudioPlayerStateRunning = 1,
//STKAudioPlayerStatePlaying = (1 << 1) | STKAudioPlayerStateRunning,
//STKAudioPlayerStateBuffering = (1 << 2) | STKAudioPlayerStateRunning,
//STKAudioPlayerStatePaused = (1 << 3) | STKAudioPlayerStateRunning,
//STKAudioPlayerStateStopped = (1 << 4),
//STKAudioPlayerStateError = (1 << 5),
//STKAudioPlayerStateDisposed = (1 << 6)
//};
dynamic func audioPlayer(audioPlayer: STKAudioPlayer, stateChanged state: STKAudioPlayerState, previousState: STKAudioPlayerState) {
    switch state.rawValue {
    case 3 : musicPlayerView.startPlayerBtn.selected = true
    case 5: musicPlayerView.startPlayerBtn.selected = false
    case 6: musicPlayerView.startPlayerBtn.selected = false
    case 7: musicPlayerView.startPlayerBtn.selected = false
    default: musicPlayerView.startPlayerBtn.selected = false
    }
    
}
dynamic func audioPlayer(audioPlayer: STKAudioPlayer, didFinishBufferingSourceWithQueueItemId queueItemId: NSObject) {
    
}

dynamic func audioPlayer(audioPlayer: STKAudioPlayer, unexpectedError errorCode: STKAudioPlayerErrorCode) {
    
}

dynamic func audioPlayer(audioPlayer: STKAudioPlayer, didFinishPlayingQueueItemId queueItemId: NSObject, withReason stopReason: STKAudioPlayerStopReason, andProgress progress: Double, andDuration duration: Double) {

    
}
}