2

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(player.pause() 在那里调用)并回来尝试其他文件它工作相同控制器但在控制中心上一个文件也同时播放。

可能是因为 AVPlayer 对象,我的处理程序多次调用。

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
}
4

1 回答 1

3

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

player = nil

上面的代码对我有用。

于 2018-06-13T07:05:06.853 回答