UIButton: Click sound when Button is clicked in swift - ios

Question

I am trying to play a sound when the UIButton: "StartButton" is clicked. However, I get an error that reads:
Argument type 'CGPoint' does not conform to expected type 'UIFocusEnvironment'
I created the button as below and assigned a CGRect poisiton to it, and I am trying to use the touchesBeagn function to detect the location of the touch and determine if it matches the location of the Button and if so call playButtonSound() function.
This is my code in the MainMenu.swift file:
// MainMenuScene.swift
import Foundation
import SpriteKit
import AVFoundation
let startButton:UIButton = UIButton(type: UIButtonType.roundedRect)
class MainMenuScene: SKScene
{
var buttonSound = AVAudioPlayer()
override func didMove(to view: SKView) {
let background = SKSpriteNode(imageNamed: "background")
background.size = self.size
background.position = CGPoint(x: self.size.width/2, y: self.size.height/2)
background.zPosition = 0
self.addChild(background)
let menuLabel1 = SKLabelNode(fontNamed: "The Bold Font")
menuLabel1.text = "Hit"
menuLabel1.position = CGPoint(x: self.size.width * 0.45, y: self.size.height * 0.78)
menuLabel1.fontSize = 300
menuLabel1.fontColor = UIColor.yellow
menuLabel1.colorBlendFactor = 1
menuLabel1.zPosition = 1
self.addChild(menuLabel1)
let menuLabel2 = SKLabelNode(fontNamed: "The Bold Font")
menuLabel2.text = "&"
menuLabel2.position = CGPoint(x: self.size.width * 0.55, y: self.size.height * 0.64)
menuLabel2.fontSize = 350
menuLabel2.fontColor = UIColor.red
menuLabel2.colorBlendFactor = 1
menuLabel2.zPosition = 1
self.addChild(menuLabel2)
let menuLabel3 = SKLabelNode(fontNamed: "The Bold Font")
menuLabel3.text = "Go"
menuLabel3.position = CGPoint(x: self.size.width * 0.60, y: self.size.height * 0.52)
menuLabel3.fontSize = 300
menuLabel3.fontColor = UIColor.yellow
menuLabel3.colorBlendFactor = 1
menuLabel3.zPosition = 1
self.addChild(menuLabel3)
startButton.frame = CGRect(x: (self.view?.center.x)! * 0.5 , y: (self.view?.center.y)! * 1.5 , width: 200, height: 50)
startButton.backgroundColor = .red
startButton.setTitleColor(.white, for: .normal)
startButton.titleLabel?.adjustsFontSizeToFitWidth = true
startButton.layer.cornerRadius = 10
startButton.clipsToBounds = true
startButton.setTitle("Start Game", for: .normal)
startButton.titleLabel!.font = UIFont(name: "The Bold Font", size: 60)
startButton.addTarget(self, action:#selector(self.startButtonClicked), for: .touchUpInside)
self.view?.addSubview(startButton)
}
#objc func startButtonClicked() {
let sceneToMoveTo = GameScene(size: self.size)
sceneToMoveTo.scaleMode = self.scaleMode
let myTransition = SKTransition.reveal(with: .right , duration: 0.5)
self.view!.presentScene(sceneToMoveTo, transition: myTransition)
}
#objc func playButtonSound(filename: String) {
let url = Bundle.main.url(forResource: "button.mp3" , withExtension: nil)
guard let newURL = url else {
print("Could not find file: \(filename)")
return
}
do {
buttonSound = try AVAudioPlayer(contentsOf: newURL)
buttonSound.numberOfLoops = -1
buttonSound.prepareToPlay()
buttonSound.setVolume(0.50, fadeDuration: 0.1)
buttonSound.play()
} catch let error as NSError {
print(error.description)
}
}
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
for touch: AnyObject in touches {
var pointOfTouch = touch.location(in: self)
if startButton.contains(pointOfTouch)
{
playButtonSound(filename: "button.mp3")
}
}
}
}
What is the reason for the error?

Answer 1

The problem is that you are calling the wrong contains method.
You are calling the method on UIButton, which has this signature:
public func contains(_ environment: UIFocusEnvironment) -> Bool
What you probably meant to call was the method on the button's frame:
if startButton.frame.contains(pointOfTouch)
You may want to read the docs to make sure that using the frame is what you want.