How to check if 2 images match each other - Swift Apple Watch - swift

Question

My code is randomly generating 2 separate images on the same interface controller. I need to check if the images match each other, but i'm unsure how to go about this as they are being randomly generated. I have tried writing if statements such as:
if blueColour.setBackgroundImageNamed("colour\(randomImage).jpg") == mainBackgroundColour.setBackgroundImageNamed("mainColour\(randomMainBackground).jpg") {
println("they match")
} else {
println("they dont match")
}
but it doesn't seem to work, i get an error saying "binary operator '==' cannot be applied to two Void operands"
My code is below:
#IBOutlet var blueColour: WKInterfaceButton!
#IBOutlet var pinkColour: WKInterfaceButton!
#IBOutlet var greenColour: WKInterfaceButton!
#IBOutlet var yellowColour: WKInterfaceButton!
#IBOutlet var mainBackgroundColour: WKInterfaceGroup!
#IBOutlet var scoreLabel: WKInterfaceLabel!
var randomImage = UInt32()
var randomMainBackground = UInt32()
#IBAction func onePressedTest() {
if blueColour.setBackgroundImageNamed("colour\(randomImage).jpg") == mainBackgroundColour.setBackgroundImageNamed("mainColour\(randomMainBackground).jpg") {
println("they match")
} else {
println("they dont match")
}
randomImage = arc4random_uniform(4)
blueColour.setBackgroundImageNamed("colour\(randomImage).jpg")
randomImage = arc4random_uniform(4)
pinkColour.setBackgroundImageNamed("colour\(randomImage).jpg")
randomImage = arc4random_uniform(4)
greenColour.setBackgroundImageNamed("colour\(randomImage).jpg")
randomImage = arc4random_uniform(4)
yellowColour.setBackgroundImageNamed("colour\(randomImage).jpg")
randomMainBackground = arc4random_uniform(4)
mainBackgroundColour.setBackgroundImageNamed("mainColour\(randomMainBackground).jpg")
}
NEW AMENDED CODE 20.04.2015:
import WatchKit
import Foundation
protocol WKInterfaceComparableImage {
func getImage()->UIImage;
func equalsImage(comparableWKObject:WKInterfaceComparableImage)->Bool;
}
class WKInterfaceButtonComparable : WKInterfaceButton, WKInterfaceComparableImage {
private var image:UIImage?;
override func setBackgroundImage(image: UIImage?) {
self.image = image;
super.setBackgroundImage(image);
}
func equalsImage(comparableWKObject: WKInterfaceComparableImage)->Bool {
return self.image === comparableWKObject.getImage();
}
func getImage() -> UIImage {
return image!;
}
}
class WKInterfaceGroupComparable : WKInterfaceButton, WKInterfaceComparableImage {
private var image:UIImage?;
override func setBackgroundImage(image: UIImage?) {
self.image = image;
super.setBackgroundImage(image);
}
func equalsImage(comparableWKObject: WKInterfaceComparableImage)->Bool {
return self.image === comparableWKObject.getImage();
}
func getImage() -> UIImage {
return image!;
}
}
class ImageProvide {
private let MAX_RANDOM_NUMBER:UInt32 = 4
static let shared:ImageProvide = ImageProvide();
var images:[UIImage];
private init() {
images = [];
for i in 1...MAX_RANDOM_NUMBER {
//get image with the best way to you
images.append(UIImage(named: "colour\(i).jpg")!);
}
}
func getRandomImage()->UIImage {
let randomImage = arc4random_uniform(MAX_RANDOM_NUMBER);
return getImage(id: Int(randomImage));
}
func getImage(#id:Int)->UIImage {
return images[id];
}
}
class InterfaceController: WKInterfaceController {
#IBOutlet var blueColour: WKInterfaceButtonComparable!
#IBOutlet var pinkColour: WKInterfaceButtonComparable!
#IBOutlet var greenColour: WKInterfaceButtonComparable!
#IBOutlet var yellowColour: WKInterfaceButtonComparable!
#IBOutlet var mainBackgroundColour: WKInterfaceGroupComparable!
#IBOutlet var scoreLabel: WKInterfaceLabel!
var randomImage = UInt32()
var randomMainBackground = UInt32()
var score:Int = 1
#IBAction func onePressedTest() {
if blueColour.equalsImage(mainBackgroundColour) || pinkColour.equalsImage(mainBackgroundColour) || greenColour.equalsImage(mainBackgroundColour) || yellowColour.equalsImage(mainBackgroundColour) {
println("they match")
scoreLabel.setText("\(score)")
score++
} else {
println("they dont match")
}
blueColour.setBackgroundImage(ImageProvide.shared.getRandomImage())
pinkColour.setBackgroundImage(ImageProvide.shared.getRandomImage())
greenColour.setBackgroundImage(ImageProvide.shared.getRandomImage())
yellowColour.setBackgroundImage(ImageProvide.shared.getRandomImage())
mainBackgroundColour.setBackgroundImage(ImageProvide.shared.getRandomImage())

Answer 1

I made an example what I think can help you find the way to resolve your issues, I created class custom with comparable power to help your work. I do it very fast, and I don't have way to test for you, but you can see the concept to help you create a solution. I hope so helped you with my example.
ComparableImage is the key to compare, this protocol can do your mission.
WKInterfaceButtonComparable extends WKInterfaceButton and with this you can save the current image to compare after, I did same with WKInterfaceGroupComparable.
ImageProvide is important because this will manage your images, there you need code your logic about images and with this Singleton you can preload your images and send to your WK components. I hope it help too.
protocol WKInterfaceComparableImage {
func getImage()->UIImage;
func equalsImage(comparableWKObject:WKInterfaceComparableImage)->Bool;
}
class WKInterfaceButtonComparable : WKInterfaceButton, WKInterfaceComparableImage {
private var image:UIImage?;
override func setBackgroundImage(image: UIImage?) {
self.image = image;
super.setBackgroundImage(image);
}
func equalsImage(comparableWKObject: WKInterfaceComparableImage)->Bool {
return self.image === comparableWKObject.getImage();
}
func getImage() -> UIImage {
return image!;
}
}
class WKInterfaceGroupComparable : WKInterfaceButton, WKInterfaceComparableImage {
private var image:UIImage?;
override func setBackgroundImage(image: UIImage?) {
self.image = image;
super.setBackgroundImage(image);
}
func equalsImage(comparableWKObject: WKInterfaceComparableImage)->Bool {
return self.image === comparableWKObject.getImage();
}
func getImage() -> UIImage {
return image!;
}
}
class ImageProvide {
private let MAX_RANDOM_NUMBER:UInt32 = 4
static let shared:ImageProvide = ImageProvide();
var images:[UIImage];
private init() {
images = [];
for i in 1...MAX_RANDOM_NUMBER {
//get image with the best way to you
images.append(UIImage(named: "colour\(i).jpg")!);
}
}
func getRandomImage()->UIImage {
let randomImage = arc4random_uniform(MAX_RANDOM_NUMBER);
return getImage(id: Int(randomImage));
}
func getImage(#id:Int)->UIImage {
return images[id];
}
}
class InterfaceController: WKInterfaceController {
#IBOutlet var blueColour: WKInterfaceButtonComparable!
#IBOutlet var pinkColour: WKInterfaceButtonComparable!
#IBOutlet var greenColour: WKInterfaceButtonComparable!
#IBOutlet var yellowColour: WKInterfaceButtonComparable!
#IBOutlet var mainBackgroundColour: WKInterfaceGroupComparable!
#IBOutlet var scoreLabel: WKInterfaceLabel!
var randomImage = UInt32()
var randomMainBackground = UInt32()
var score:Int = 1
#IBAction func onePressedTest() {
if blueColour.equalsImage(mainBackgroundColour) {
println("they match")
} else {
println("they dont match")
}
blueColour.setBackgroundImage(ImageProvide.shared.getRandomImage())
pinkColour.setBackgroundImage(ImageProvide.shared.getRandomImage())
greenColour.setBackgroundImage(ImageProvide.shared.getRandomImage())
yellowColour.setBackgroundImage(ImageProvide.shared.getRandomImage())
mainBackgroundColour.setBackgroundImage(ImageProvide.shared.getRandomImage())
}
}