Xcode 多个 UIButton 操作

Question

我一直在尝试编写一个音板应用程序，其中当然有多个声音，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，所以请详细解释一下我需要做什么。我为我的格式道歉，因为这是我被问到堆栈溢出的第一个问题，下面的所有内容都是代码。我的故事板上目前有 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

@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?，你将 sound1 替换为 ?。

没有笑话表情符号工作:)):D

希望这会有所帮助

编辑 你做的错误的事情是你在 viewDidload audioPlayer 中设置了声音，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：在类中这就是你在 ViewController 中所需要的，不多也不少（），确保将按钮连接到 IBAction 并断开连接其他方法

 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    
    }
   }
 }
}

现在您将遇到的唯一错误是 SIGABART，因为该按钮有一些出口和操作

Answer 2

您需要用另一个声音初始化另一个 AVAudioPlayer，然后在第二个按钮点击时播放它。

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()
    }
}