#7–2 Light App

程式碼:

import UIKit
class ViewController: UIViewController {
var index = 0
var color = [ UIColor.red , UIColor.orange , UIColor.yellow , UIColor.green , UIColor.blue , UIColor.init(red: 75/255, green: 0, blue: 130/255, alpha: 1) , UIColor.purple ]
@IBOutlet weak var changeButton: UIButton!
@IBAction func colorChange(_ sender: Any) {
if index <= 6 {
changeButton.backgroundColor = color[index]
}
else if index > 6 {
index = 0
changeButton.backgroundColor = color[index]
}
index += 1
}
override func viewDidLoad() {
super.viewDidLoad()
}
}

TingKai-Chen/Peter_Homework7-2-advance-