Question

我一直在尝试编写一个音板应用程序，它当然有多个声音，到目前为止我有两个按钮和两个声音，但每个按钮播放相同的声音。我是一个菜鸟程序员，所以请详细向我解释我需要做什么。我为我的格式化道歉，因为这是我第一个被问到堆栈溢出的问题，下面的所有内容都是代码。我目前在故事板上有两个按钮。帮助将不胜感激。下面是我的ViewController.swift

import UIKit 
import AVFoundation

class ViewController: UIViewController {
    var sound = NSURL(fileURLWithPath: NSBundle.mainBundle().pathForResource("button", ofType: "wav")!)
    var sound2 = NSURL(fileURLWithPath: NSBundle.mainBundle().pathForResource("sweg", ofType: "wav")!)
    var audioPlayer = AVAudioPlayer()

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        audioPlayer = AVAudioPlayer(contentsOfURL: sound, error: nil)
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    @IBAction func soundbutton(sender: UIButton) {
       audioPlayer.play()
    }

    @IBAction func sound2(sender: UIButton) {
       audioPlayer.play()
    }
}

Answer 1

您应该使用单个IBAction来处理那些按钮

@IBAction func soundButton (sender: UIButton){
 switch sender.currentTitle! {
   case "sound1"://here you put the title the first button has
      audioPlayer = AVAudioPlayer(contentsOfURL: sound, error: nil)
      audioPlayer.play()
   case "sound2"://here you put the title the second button has,here sound2 was an example,because IDK your buttons titles
      audioPlayer = AVAudioPlayer(contentsOfURL: sound2, error: nil)
      audioPlayer.play()
   default : break    
   }
 }

currentTitle是按钮的标题，因此如果第一个按钮标题是，则将sound1替换为。

没有笑话表情符号工作:)）：D

希望这有助于

<强> 修改你正在做的错误是你在viewDidload audioPlayer中设置声音，这就是为什么你只有一个声音

您可以从viewDidLoad

中删除该行

编辑：在课堂内 这是您在ViewController中所需要的，仅此而已（），确保您将按钮连接到IBAction并断开连接来自其他方法

 import UIKit 
 import AVFoundation

class ViewController: UIViewController {
 var sound = NSURL(fileURLWithPath: NSBundle.mainBundle().pathForResource("button", ofType: "wav")!)
 var sound2 = NSURL(fileURLWithPath: NSBundle.mainBundle().pathForResource("sweg", ofType: "wav")!)
 var audioPlayer = AVAudioPlayer()
 @IBAction func soundButton (sender: UIButton){
 switch sender.currentTitle! {
    case "sound1"://here you put the title the first button has
       audioPlayer = AVAudioPlayer(contentsOfURL: sound, error: nil)
       audioPlayer.play()
    case "sound2"://here you put the title the second button has,here    sound2 was an example,because IDK your buttons titles
       audioPlayer = AVAudioPlayer(contentsOfURL: sound2, error: nil)
       audioPlayer.play()
     default : break    
    }
   }
 }

最简单的实现

import UIKit 
import AVFoundation

class ViewController: UIViewController {
 var audioPlayer = AVAudioPlayer()
 @IBAction func soundButton (sender: UIButton){
 if let title = sender.currentTitle{
 switch title {
    case "sound1"://here you put the title the first button has
       audioPlayer = AVAudioPlayer(contentsOfURL: NSURL(fileURLWithPath: NSBundle.mainBundle().pathForResource("button", ofType: "wav")!), error: nil)
       audioPlayer.play()
    case "sound2"://here you put the title the second button has,here    sound2 was an example,because IDK your buttons titles
       audioPlayer = AVAudioPlayer(contentsOfURL: NSURL(fileURLWithPath: NSBundle.mainBundle().pathForResource("sweg", ofType: "wav")!), error: nil)
       audioPlayer.play()
     default : break    
    }
   }
 }
}

现在唯一的错误是SIGABART，因为这些按钮有一些出口和动作

Answer 2

你需要用另一个声音初始化另一个AVAudioPlayer，然后在第二个按钮上弹奏它。

Answer 3

import UIKit 
import AVFoundation

class ViewController: UIViewController {
    var sound = NSURL(fileURLWithPath:     NSBundle.mainBundle().pathForResource("button", ofType: "wav")!)   
   var sound2 = NSURL(fileURLWithPath: NSBundle.mainBundle().pathForResource("sweg", ofType: "wav")!)
    var audioPlayer = AVAudioPlayer()

    override func viewDidLoad() {
        super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.
         }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
    }

    @IBAction func soundbutton(sender: UIButton) {
audioPlayer = AVAudioPlayer(contentsOfURL: sound, error: nil)
       audioPlayer.play()
    }

    @IBAction func sound2(sender: UIButton) {
audioPlayer = AVAudioPlayer(contentsOfURL: sound2, error: nil)
       audioPlayer.play()
    }
}

Xcode多个UIButton操作

3 个答案: