[iOS / Swift] Storyboard 간단한 로또앱 만들기

 

아래의 코드는 수정 전 코드임. 기능은 같음. 추가로 주석으로 처리된 코드들로도 대체 가능함.

import UIKit

class ViewController: UIViewController {
    
    @IBOutlet weak var number1Label: UILabel!
    
    @IBOutlet weak var number2Label: UILabel!
    
    @IBOutlet weak var number3Label: UILabel!
    
    @IBOutlet weak var number4Label: UILabel!
    
    @IBOutlet weak var number5Label: UILabel!
    
    @IBOutlet weak var number6Label: UILabel!
    
    @IBOutlet weak var number7Label: UILabel!
    
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        // 이때 작성하면 크기가 정해지기 전이라 세로일 때는 모양이 꺠짐. 그래서 viewDidAppear로 이동
        //        number1Label.layer.cornerRadius = number1Label.bounds.width / 2
        //        number1Label.clipsToBounds = true // 깎인 부분 외에는 그려지지 않음
        
        // 1 ~ 10 : 노란색
        // 11 ~ 20 : 파란색
        // 21 ~ 30 : 빨간색
        // 31 ~ 40 : 회색
        // 나머지 : 녹색
        // 보너스 번호 : 보라색
        
        let random1 = Int.random(in: 1 ... 45)
        number1Label.text = "\(random1)"
        switch random1 {
        case 1 ... 10:
            number1Label.backgroundColor = .yellow
            number1Label.textColor = UIColor.black
        case 11 ... 20:
            number1Label.backgroundColor = .blue
            number1Label.textColor = UIColor.white
        case 21 ... 30:
            number1Label.backgroundColor = .red
            number1Label.textColor = UIColor.white
        case 31 ... 40:
            number1Label.backgroundColor = .gray
            number1Label.textColor = UIColor.white
        case 41 ... 45:
            number1Label.backgroundColor = .green
            number1Label.textColor = UIColor.black
        default:
            break
            
        }
        
        let random2  = Int.random(in: 1 ... 45)
        number2Label.text = "\(random2)"
        switch random2 {
        case 1 ... 10:
            number2Label.backgroundColor = .yellow
            number2Label.textColor = UIColor.black
        case 11 ... 20:
            number2Label.backgroundColor = .blue
            number2Label.textColor = UIColor.white
        case 21 ... 30:
            number2Label.backgroundColor = .red
            number2Label.textColor = UIColor.white
        case 31 ... 40:
            number2Label.backgroundColor = .gray
            number2Label.textColor = UIColor.white
        case 41 ... 45:
            number2Label.backgroundColor = .green
            number2Label.textColor = UIColor.black
        default:
            break
            
        }
        
        let random3 = Int.random(in: 1 ... 45)
        number3Label.text = "\(random3)"
        switch random3 {
        case 1 ... 10:
            number3Label.backgroundColor = .yellow
            number3Label.textColor = UIColor.black
        case 11 ... 20:
            number3Label.backgroundColor = .blue
            number3Label.textColor = UIColor.white
        case 21 ... 30:
            number3Label.backgroundColor = .red
            number3Label.textColor = UIColor.white
        case 31 ... 40:
            number3Label.backgroundColor = .gray
            number3Label.textColor = UIColor.white
        case 41 ... 45:
            number3Label.backgroundColor = .green
            number3Label.textColor = UIColor.black
        default:
            break
            
        }
        
        let random4 = Int.random(in: 1 ... 45)
        number4Label.text = "\(random4)"
        switch random4 {
        case 1 ... 10:
            number4Label.backgroundColor = .yellow
            number4Label.textColor = UIColor.black
        case 11 ... 20:
            number4Label.backgroundColor = .blue
            number4Label.textColor = UIColor.white
        case 21 ... 30:
            number4Label.backgroundColor = .red
            number4Label.textColor = UIColor.white
        case 31 ... 40:
            number4Label.backgroundColor = .gray
            number4Label.textColor = UIColor.white
        case 41 ... 45:
            number4Label.backgroundColor = .green
            number4Label.textColor = UIColor.black
        default:
            break
            
        }
        
        let random5 = Int.random(in: 1 ... 45)
        number5Label.text = "\(random5)"
        switch random5 {
        case 1 ... 10:
            number5Label.backgroundColor = .yellow
            number5Label.textColor = UIColor.black
        case 11 ... 20:
            number5Label.backgroundColor = .blue
            number5Label.textColor = UIColor.white
        case 21 ... 30:
            number5Label.backgroundColor = .red
            number5Label.textColor = UIColor.white
        case 31 ... 40:
            number5Label.backgroundColor = .gray
            number5Label.textColor = UIColor.white
        case 41 ... 45:
            number5Label.backgroundColor = .green
            number5Label.textColor = UIColor.black
        default:
            break
            
        }
        
        let random6 = Int.random(in: 1 ... 45)
        number6Label.text = "\(random6)"
        switch random6 {
        case 1 ... 10:
            number6Label.backgroundColor = .yellow
            number6Label.textColor = UIColor.black
        case 11 ... 20:
            number6Label.backgroundColor = .blue
            number6Label.textColor = UIColor.white
        case 21 ... 30:
            number6Label.backgroundColor = .red
            number6Label.textColor = UIColor.white
        case 31 ... 40:
            number6Label.backgroundColor = .gray
            number6Label.textColor = UIColor.white
        case 41 ... 45:
            number6Label.backgroundColor = .green
            number6Label.textColor = UIColor.black
        default:
            break
            
        }
        
        let random7 = Int.random(in: 1 ... 45)
        number7Label.text = "\(random7)"
        number7Label.backgroundColor = UIColor.purple
        number7Label.textColor = UIColor.white
        
        //        // 랜덤한 1~45까지의 숫자 생성
        //        number1Label.text = "\(Int.random(in: 1 ... 45))"
        //        number2Label.text = "\(Int.random(in: 1 ... 45))"
        //        number3Label.text = "\(Int.random(in: 1 ... 45))"
        //        number4Label.text = "\(Int.random(in: 1 ... 45))"
        //        number5Label.text = "\(Int.random(in: 1 ... 45))"
        //        number6Label.text = "\(Int.random(in: 1 ... 45))"
        //        number7Label.text = "\(Int.random(in: 1 ... 45))"
        
    }
        
        override func viewDidAppear(_ animated: Bool) {
            super.viewDidAppear(animated)
            
            number1Label.layer.cornerRadius = number1Label.bounds.width / 2
            number1Label.clipsToBounds = true
            
            number2Label.layer.cornerRadius = number2Label.bounds.width / 2
            number2Label.clipsToBounds = true
            
            number3Label.layer.cornerRadius = number3Label.bounds.width / 2
            number3Label.clipsToBounds = true
            
            number4Label.layer.cornerRadius = number4Label.bounds.width / 2
            number4Label.clipsToBounds = true
            
            number5Label.layer.cornerRadius = number5Label.bounds.width / 2
            number5Label.clipsToBounds = true
            
            number6Label.layer.cornerRadius = number6Label.bounds.width / 2
            number6Label.clipsToBounds = true
            
            number7Label.layer.cornerRadius = number7Label.bounds.width / 2
            number7Label.clipsToBounds = true
            
        }
}

 

 

1차 개선한 코드 

반복되는 코드들을  while문으로 정리하여 코드의 가독성을 높임

import UIKit

class ViewController: UIViewController {
    
    @IBOutlet weak var number1Label: UILabel!
    
    @IBOutlet weak var number2Label: UILabel!
    
    @IBOutlet weak var number3Label: UILabel!
    
    @IBOutlet weak var number4Label: UILabel!
    
    @IBOutlet weak var number5Label: UILabel!
    
    @IBOutlet weak var number6Label: UILabel!
    
    @IBOutlet weak var number7Label: UILabel!
    
    
    override func viewDidLoad() {
        super.viewDidLoad()
    }
        
        override func viewDidAppear(_ animated: Bool) {
            super.viewDidAppear(animated)
            
            let labels = [number1Label!, number2Label!, number3Label!, number4Label!, number5Label!, number6Label!, number7Label!] // 옵셔널을 배우지 않아서 강제언래핑 한것임.
            
            var nums = [Int]()
            
            while nums.count < 7 { // or labels.count
                let randomNum1 = Int.random(in: 1...45)
                if !nums.contains(randomNum1) {
                    nums.append(randomNum1)
                }
            }
            
            let sortedNums = nums.sorted()
            
            for (index, label) in labels.enumerated() {
                label.layer.cornerRadius = label.bounds.width / 2
                label.clipsToBounds = true
                
                label.text = "\(sortedNums[index])"
                
                switch sortedNums[index] {
                case 1 ... 10:
                    label.backgroundColor = .yellow
                    label.textColor = UIColor.black
                case 11 ... 20:
                    label.backgroundColor = .blue
                    label.textColor = UIColor.white
                case 21 ... 30:
                    label.backgroundColor = .red
                    label.textColor = UIColor.white
                case 31 ... 40:
                    label.backgroundColor = .gray
                    label.textColor = UIColor.white
                case 41 ... 45:
                    label.backgroundColor = .green
                    label.textColor = UIColor.black
                default:
                    break
                    
                }
                
            }
            
            number7Label.backgroundColor = UIColor.purple
            number7Label.textColor = UIColor.white
            
        }
    
}

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