swift - 音板 Swift 2

Question

我正在尝试用 swift 制作一个音板应用程序，四个按钮中的 3 个按钮使应用程序崩溃，另一个按钮不执行任何操作。我究竟做错了什么？我是编程新手，我试图按照教程进行操作，但它不起作用。

import AVFoundation
import UIKit

class FirstViewController: UIViewController  {

    let soundFilesname = ["Tacos", "What's that supposed to mean", "Cube fist man", "giraffe"]

    var audioPlayers = [AVAudioPlayer]()

    override func viewDidLoad() {
        super.viewDidLoad()

        //set up audio player
        for sound in soundFilesname {

            do{

                //try and do somthing
                let url = NSURL(fileURLWithPath: NSBundle.mainBundle().pathForResource(sound, ofType: "mp3")!)
                let audioPlayer = try AVAudioPlayer(contentsOfURL: url)

                audioPlayers.append(audioPlayer)
            }
            catch{
                //catch error that is thrown
                audioPlayers.append(AVAudioPlayer())
            }
        }
    }

    @IBAction func buttonTapped(sender: AnyObject)
    {
        //get the audioplayer thats corresponds to the button pressed

        let audioPlayer = audioPlayers [sender.tag]
        audioPlayer.play() 
    }
}

更新

在我的 iPhone 5 IOS 9.0.2 上通过 Xcode 运行应用程序:

IOS模拟器:

Answer 1

请提供您点击按钮时收到的崩溃信息。

另外，在buttonTapped中打印以检查正确的标签号，可能是您正在访问数组中的越界元素，但除非您提供崩溃信息，否则不确定。

@IBAction func buttonTapped(sender: AnyObject)
    {
       // to check correct tag no
       print("Button tag is \(sender.tag)")

        //get the audioplayer thats corresponds to the button pressed
        let audioPlayer = audioPlayers [sender.tag]
        audioPlayer.play() 
    }