从通知控制中心同时播放多个音频

时间:2018-06-01 06:35:06

标签: ios swift avplayer avaudiosession mpremotecommandcenter

我有一个场景,当我播放单个音频文件并移动到控制中心它工作正常,但如果回到视图控制器(在那里调用player.pause())并回来并尝试其他文件它的工作原理在同一个控制器上但在控制中心的前一个文件也同时播放。

可能是因为AVPlayer对象,我的处理程序被多次调用。

MPRemoteCommandCenter.shared().playCommand.addTarget { (playEvent) -> MPRemoteCommandHandlerStatus in
        let currentItem = self.player.currentItem
        self.player.replaceCurrentItem(with: currentItem)
        if self.player.isPlaying {
            self.player.pause()
        }else{
            self.player.play()
        }
        self.updateInfo()
        self.btnAudioPlay.setImage(#imageLiteral(resourceName: "pause"), for: .normal)
        return .success
    }

MPRemoteCommandCenter.shared().pauseCommand.addTarget { (pauseEvent) -> MPRemoteCommandHandlerStatus in
        if self.player.isPlaying {
            self.player.pause()
        }else{
            self.player.play()
        }
        self.updateInfo()
        self.btnAudioPlay.setImage(#imageLiteral(resourceName: "play"), for: .normal)
        return .success
    }

func updateInfo() {
    let image = UIApplication.shared.icon!
    let mediaArtwork = MPMediaItemArtwork(boundsSize: image.size) { (size: CGSize) -> UIImage in
        return image
    }

    let nowPlayingInfo: [String: Any] = [
        MPMediaItemPropertyAlbumTitle: self.subTilteForAudioPlayer,
        MPMediaItemPropertyTitle: self.titleForAudioPlayer,
        MPMediaItemPropertyArtwork: mediaArtwork,
        MPMediaItemPropertyPlaybackDuration:  Float(CMTimeGetSeconds((player.currentItem?.asset.duration)!)) ,
        MPNowPlayingInfoPropertyElapsedPlaybackTime: Float(CMTimeGetSeconds(player.currentTime()))
    ]
    MPNowPlayingInfoCenter.default().nowPlayingInfo = nowPlayingInfo
}

1 个答案:

答案 0 :(得分:0)

音频播放器每次都会被初始化,它出现在同一个屏幕上,因此多个声音正在播放通知中心。

player = nil

上面的代码对我有用。