SWIFT：将数据从一个类传递到另一个类

所以我一直在使用prepareForSegue将数据从一个变量传递到另一个类。当我将数据传递给的变量与destinationViewController一起使用时，这一切都可以正常工作。但如果不是，会发生什么呢

示例：我正在从ViewController1移动到ViewController2，但我希望ViewController1中的数据转到“非ViewController”类，尽管我仍然希望转到VC2

有什么想法吗？谢谢大家!

 override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
        if (segue.identifier == "stopRecording") {
            //let playSoundsVC:PlaySoundsViewController = segue.destinationViewController as! PlaySoundsViewController
            let audioEffectsClass = AudioEffect()
            let data = sender as! RecordedAudio
            audioEffectsClass.receivedAudio = data
        }
    }

进口基础 进口AVF基金会

类音频效应{

let session = AVAudioSession.sharedInstance()
var audioEngine: AVAudioEngine!
var audioPlayerNode: AVAudioPlayerNode!
var audioFile: AVAudioFile!
var receivedAudio: RecordedAudio!
var changeEffect = AVAudioUnitTimePitch()


func create(){
    //output is through speakers

    do{
        try session.overrideOutputAudioPort(AVAudioSessionPortOverride.Speaker)
    } catch {print("Failed output audio through speakers.")}

    audioEngine = AVAudioEngine()

    audioPlayerNode = AVAudioPlayerNode()
    audioEngine.attachNode(audioPlayerNode)


}

func playAudio(){
    audioEngine.stop()
    audioEngine.reset()
    do {
        audioFile = try AVAudioFile(forReading: receivedAudio.filePathUrl)
    } catch {print("Failed to create file.")}

    audioPlayerNode.scheduleFile(audioFile, atTime: nil, completionHandler: nil)
    do {
        try audioEngine.start()
    } catch {}
    audioPlayerNode.play()

    audioEngine.attachNode(changeEffect)
    audioEngine.connect(audioPlayerNode, to: changeEffect, format: nil)
    audioEngine.connect(changeEffect, to: audioEngine.outputNode, format: nil)
}

func playAudioWithVariablePitch(pitch:Float) {
    changeEffect.pitch = pitch
    create()
    playAudio()
}

func playAudioWithVariableRate(rate: Float){
    changeEffect.rate = rate
    create()
    playAudio()

}

func stopAudio(){
    audioEngine.stop()
}

---

}

如果您有一个引用该类的变量，请创建一个方法来接收该类中的数据，并调用该方法并在

prepareforsgue

中传递数据。我希望我正确地理解您。。。但如果我没弄错的话，我不知道问题出在哪里？！？如果您将数据传递给一个子类UIViewcontroller类，或任何其他类，都是一样的？！？：-）

你有什么错误？或者，如果运行发布的代码会发生什么

也许这对你有帮助

class VCOne: UIViewController {

    lazy var audioEffect: AudioEffect = AudioEffect()

    override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
        if (segue.identifier == "stopRecording") {
            if let recordedAudio: RecordedAudio = sender as? RecordedAudio {
                audioEffect.receivedAudio = recordedAudio
            }
        }
    }

}

class AudioEffect {
    var receivedAudio: RecordedAudio?
}

---

你能给我们一些代码吗？你能提供一个“其他类”的代码示例以及你打算如何使用它的描述吗？添加了代码。抱歉，没有提前添加。@Neo更新了代码。您希望看到什么？将对象

audioEffectsClass

创建为局部变量。if子句一结束，

audioEffectsClass

就会消失。