AudioPlayer和锁屏/控制中心控件Swift [英] AudioPlayer and lockscreen/control center control Swift

问题描述

我是Swift的新手.我写是因为我想问一个问题.我和我的朋友，我们正在开发音频播放器，但是有一个问题.播放器还可以在锁定屏幕的后台和遥控器中工作，而控制中心也可以工作，但是如果音乐被这两个控件之一打断，则播放器的播放/暂停"按钮不会使用正确的图标更新. 我的问题是，如何通过一个遥控器使播放器清楚地知道音乐正在开始/停止，并且播放器相应地采取了行动，更改了播放/暂停按钮的图标?非常感谢，我希望我很清楚.

I'm new on Swift. I write because I want to ask a question. Me and my friend we are developing an audio player, but we have a problem. The player also works in background and remote controls from the lockscreen and the control center work, but if music is interrupted by one of these two controls, the play/pause button of our player is not updated with the correct icon. My question is, how can I make it clear to the player that the music was starting/stopping by one of the remote controls and the player to act accordingly, changing the icon of play/pause button? thanks a lot, I hope I was clear.

推荐答案

您需要使用MPRemoteCommandCenter来执行此操作.例如，在您的viewControllers viewDidLoad()中，您可以添加以下内容:

You need to use the MPRemoteCommandCenter to do this. For example in your viewControllers viewDidLoad() you can add this:

override func viewDidLoad() {
    super.viewDidLoad()

    UIApplication.shared.beginReceivingRemoteControlEvents()
    let commandCenter = MPRemoteCommandCenter.shared()

    commandCenter.pauseCommand.addTarget { (event) -> MPRemoteCommandHandlerStatus in
        //Update your button here for the pause command
        return .success
    }

    commandCenter.playCommand.addTarget { (event) -> MPRemoteCommandHandlerStatus in
        //Update your button here for the play command
        return .success
    }

}

只需更改我包含的评论即可更新您的按钮UI.如果尚未导入MediaPlayer和MediaPlayer.framework ，则还需要导入.

Just change the comments I have included to update your buttons UI. You will also need to import MediaPlayer and MediaPlayer.framework if you have not done so already.

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