1 在iOS中触发随机声音（来自数组？）的按钮

Question

我已经知道如何在按下按钮时触发声音。当按下同一个按钮时，我被困在触发随机声音上。由于音频播放器需要一个字符串，我生成了一个随机数，但不知道如何在播放器中插入该随机数。下面的代码真的坏了，所以请耐心等待，我只是卡住了。

import UIKit
import AVFoundation

class ViewController: UIViewController {

@IBOutlet weak var mainButton: UIButton!

var sound1: AVAudioPlayer?
var sound2: AVAudioPlayer?
var sound3: AVAudioPlayer?
var sound4: AVAudioPlayer?

//There are many more sounds, but this is short for the example

var audioPlayer: AVAudioPlayer = AVAudioPlayer()

func setupAudioPlayerWithFile(file: NSString, type: NSString) -> AVAudioPlayer? {

    let path = NSBundle.mainBundle().pathForResource(file as String, ofType: type as String)
    let url = NSURL.fileURLWithPath(path!)

    var audioPlayer : AVAudioPlayer?

    do {
        try audioPlayer = AVAudioPlayer(contentsOfURL: url)
    } catch {
        print("Player not available")
    }
    return audioPlayer
}

override func viewDidLoad() {
    super.viewDidLoad()

    if let sound1 = self.setupAudioPlayerWithFile("sound1", type: "aif")
    {self.sound1 = sound1}

    if let sound2 = self.setupAudioPlayerWithFile("sound2", type: "aif")
    {self.sound2 = sound2}

    if let sound3 = self.setupAudioPlayerWithFile("sound3", type: "aif")
    {self.sound3 = sound3}

    if let sound4 = self.setupAudioPlayerWithFile("sound4", type: "aif")
    {self.sound4 = sound4}

}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
}

@IBAction func buttonPressed(sender: AnyObject){
    let audioArray: NSArray = ["1, 2, 3, 4"] 
    let range: UInt32 = UInt32(audioArray.count)
    number = Int(arc4random_uniform(range))

    sound(number)?.play()
}
}

Answer 1

class ViewController: UIViewController {

@IBOutlet weak var mainButton: UIButton!

// PUT SOUNDS AS STRINGS IN ARRAY
var arrayOfSounds = ["sound1", "sound2", "sound3", "sound4"]



var audioPlayer: AVAudioPlayer = AVAudioPlayer()

func setupAudioPlayerWithFile(file: NSString, type: NSString) -> AVAudioPlayer? {

    let path = NSBundle.mainBundle().pathForResource(file as String, ofType: type as String)
    let url = NSURL.fileURLWithPath(path!)

    var audioPlayer : AVAudioPlayer?

    do {
        try audioPlayer = AVAudioPlayer(contentsOfURL: url)
    } catch {
        print("Player not available")
    }
    return audioPlayer
}

override func viewDidLoad() {
    super.viewDidLoad()



}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
}

@IBAction func buttonPressed(sender: AnyObject){
    let range: UInt32 = UInt32(arrayOfSounds.count)
    number = Int(arc4random_uniform(range))
    //FIND OUT WHICH SOUND HERE
    let sound = self.setupAudioPlayerWithFile(arrayOfSounds[number], type: "aif")
    sound.play()
}
}