Question

我会直截了当，因为我觉得我的头衔可能需要进一步解决才能真正理解我的困境。实质上;我有两个视图控制器与模态segue链接;我的第一个View的主要功能的初始工作部分看起来像这样：

 @IBAction func beginButton(_ sender: Any) {
        audioPlayer.play()
            }

第二个视图控制器设置如下;其功能完全不包括播放相同audioPlayer的愿望

 func performSegueToReturnBack()  {
         audioPlayer.play()
            if let nav = self.navigationController {

                nav.popViewController(animated: true)
            } else {

                self.dismiss(animated: true, completion: nil)
            }

    }

任何有关如何使这项工作的想法将不胜感激;谢谢你的帮助！

Answer 1

看起来你可能错过了一些代码。这就是如何完成你想要做的事情。

    var audioPlayer = AVAudioPlayer()
    let alertSound = URL(fileURLWithPath: Bundle.main.path(forResource: "CheckoutScannerBeep", ofType: "mp3")!) // If sound is not in an asset
    //let alertSound = NSDataAsset(name: "CheckoutScannerBeep") // If sound is in an Asset

func testSound(){
    do {
        //        audioPlayer = try AVAudioPlayer(data: (alertSound!.data), fileTypeHint: AVFileTypeMPEGLayer3) //If in asset
        audioPlayer = try AVAudioPlayer(contentsOf: alertSound) //If not in asset
        audioPlayer.pan = -1.0 //left headphone
        //audioPlayer.pan = 1.0 // right headphone
        audioPlayer.prepareToPlay()
        audioPlayer.volume = 50
        audioPlayer.play()
    } catch  {
        print("error")
    }

}

func performSegueToReturnBack()  {
     testSound()
        if let nav = self.navigationController {

            nav.popViewController(animated: true)
        } else {

            self.dismiss(animated: true, completion: nil)
        }

}

Swift 3：获得一个返回segue以发挥声音效果

1 个答案: