ios - Xcode 多个 UIButton Action

Question

我一直在尝试编写一个音板应用程序，其中当然有多种声音，到目前为止，我有两个按钮和两种声音，但每个按钮都播放相同的声音。我是菜鸟程序员，所以请向我详细解释我需要做什么。我为我的格式道歉，因为这是我被问到的第一个堆栈溢出问题，下面的所有内容都是代码。我的 Storyboard 上目前有 2 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

您应该为这些按钮使用单个 IBAction ex

@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，所以如果第一个按钮标题是😆，你用😆替换sound1。

没有笑话表情符号工作 :)):D

希望对你有帮助

编辑 你做错的是你在 viewDidload audioPlayer 中设置了声音，这就是为什么你只有一种声音

您可以从 viewDidLoad 中删除该行

Edit: inside the class 这就是你在 ViewController 中所需要的，仅此而已，仅此而已()，确保将按钮连接到 IBAction 并断开连接从其他方法

 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    
    }
   }
 }
}

现在您遇到的唯一错误是 SIGABART，因为该按钮有一些输出和操作