Question

我正在为具有AVAudioPlayer的tvOS创建应用。我希望Apple TV Remote的播放/暂停按钮播放/暂停AVAudioPlayer。这是我到目前为止在App Delegate中添加的代码：

    func initializePlayButtonRecognition() {  
        addPlayButtonRecognizer(#selector(AppDelegate.handlePlayButton(_:)))  
    }  

    func addPlayButtonRecognizer(_ selector: Selector) {  
        let playButtonRecognizer = UITapGestureRecognizer(target: self, action:selector)  
        playButtonRecognizer.allowedPressTypes = [NSNumber(value: UIPressType.playPause.rawValue as Int)]  
        self.window?.addGestureRecognizer(playButtonRecognizer)  
        playButtonRecognizer.allowedTouchTypes = [NSNumber(value: UITouchType.indirect.rawValue)]  
    }  


    func handlePlayButton(_ sender: AnyObject) {  
        if audioPlayer.isPlaying {  
            audioPlayer.pause() {  
            } else {  
                audioPlayer.play()  
            }  

    }  
}

问题是App Delegate对AVAudioPlayer（audioPlayer）一无所知。 audioPlayer是离乐MusicViewController。如何让App Delegate知道audioPlayer是什么？我收到此错误 - 使用未解析的标识符＆＃39; audioPlayer＆＃39;

Answer 1

您是否真的创建了AVAudioPlayer的实例？

let player = try AVAudioPlayer(contentsOf: url)
player.play()

App Delegate（tvOS）中的参考AVAudioPlayer

1 个答案: