#63 九九乘法畫面

在xcode製作，顯示於模擬器

題目

#58 Swift 的九九乘法 App

1.基本乘法畫面

import UIKit
class ViewController: UIViewController {
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        let width = view.frame.width / 9
        
        for x in 1...9 {
            for y in 1...9 {
                //產生數個label
                let label = UILabel(frame: CGRect(x: CGFloat(x*33), y: 10 + CGFloat(y*33), width: width, height: width))
                label.text = "\(x * y)"
                label.textAlignment = .center
                view.addSubview(label)
            }
        }
    }
}

2.外圍顯示幾乘幾

import UIKit
class ViewController: UIViewController {
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        let width = view.frame.width / 9
        
        for x in 1...10 {
            for y in 1...10 {
                //產生數個label
                let label = UILabel(frame: CGRect(x: CGFloat(x*30), y: 10 + CGFloat(y*30), width: width, height: width))
                if x == 1 && y == 1 {
                    label.text = "X"
                } else if x == 1 {
                    label.text = "\(x * (y-1))"
                } else if y == 1 {
                    label.text = "\((x-1) * y)"
                } else {
                    label.text = "\((x-1) * (y-1))"
                }
                
                label.textAlignment = .center
                view.addSubview(label)
            }
        }
    }
}

3.某些 label 顯示特別的顏色，第一排和第一列的 label 文字粗體

import UIKit
class ViewController: UIViewController {
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        let width = view.frame.width / 13
        
        for x in 1...10 {
            for y in 1...10 {
                //產生數個label
                let label = UILabel(frame: CGRect(x: CGFloat(x*30), y: 10 + CGFloat(y*30), width: width, height: width))
                if x == 1 && y == 1 {
                    label.text = "X"
                    label.font = UIFont.boldSystemFont(ofSize: 16)
                } else if x == 1 {
                    label.text = "\(x * (y-1))"
                    label.font = UIFont.boldSystemFont(ofSize: 16)
                } else if y == 1 {
                    label.text = "\((x-1) * y)"
                    label.font = UIFont.boldSystemFont(ofSize: 16)
                } else {
                    label.text = "\((x-1) * (y-1))"
                }
                
                if (x-1 == 2 && y-1 == 8) || (x-1 == 3 && y-1 == 7) || (x-1 == 4 && y-1 == 6) || (x-1 == 5 && y-1 == 5) || (x-1 == 6 && y-1 == 6) || (x-1 == 7 && y-1 == 7) || (x-1 == 8 && y-1 == 8) {
                    label.backgroundColor = UIColor(red: 141/255, green: 206/255, blue: 212/255, alpha: 1)
                } else if (x-1 == 1 && y-1 == 9) || (x-1 == 3 && y-1 == 9) || (x-1 == 5 && y-1 == 9) || (x-1 == 7 && y-1 == 9) || (x-1 == 9 && y-1 == 9) {
                    label.backgroundColor = UIColor(red: 255/255, green: 209/255, blue: 208/255, alpha: 1)
                } else if (x-1 == 2 && y-1 == 9) || (x-1 == 4 && y-1 == 9) || (x-1 == 6 && y-1 == 9) || (x-1 == 8 && y-1 == 9) {
                    label.backgroundColor = UIColor(red: 255/255, green: 255/255, blue: 180/255, alpha: 1)
                }
                
                label.textAlignment = .center
                view.addSubview(label)
            }
        }
    }
}