iOS - UILabel

import UIKit

class ViewController: UIViewController {
    
    override func viewDidLoad() {
        super.viewDidLoad()
        //建立Label並設置位置
        let label = UILabel(frame: CGRect(x: 150,y:250 , width: 100, height: 100))
        //設置文本內容
        label.text = "文本內容"
        //添加到視圖中
        self.view.addSubview(label)
        //設置文字顏色及背景顏色
        label.textColor = UIColor.green
        label.backgroundColor = UIColor.orange
        //文字對其方式
        label.textAlignment = .right //右對齊
        //文字陰影設置
        label.shadowColor = UIColor.gray//灰色陰影
        label.shadowOffset = CGSize(width: 2,height: 2)
        //字體及大小設置
        label.font = UIFont.systemFont(ofSize: 18)//自定義字體
        label.font = UIFont.systemFont(ofSize:17)//系統字體
        //內容文字過長的省略方式
        label.lineBreakMode = .byClipping//超出部分裁剪
        label.lineBreakMode = .byCharWrapping//以字母結尾換行
        label.lineBreakMode = .byTruncatingHead//將頭部超出部分省略號代替
        label.lineBreakMode = .byTruncatingTail//將尾部超出部分省略號代替
        label.lineBreakMode = .byWordWrapping//以單詞結尾換行
        label.lineBreakMode = .byTruncatingMiddle//將中間部分超出部分省略號代替
        //文字大小自適應標籤高度
        label.adjustsFontSizeToFitWidth = true//當文字超出標籤寬度時，自動調整文字大小，使其不被截斷
        //設置顯示行數
        label.numberOfLines = 2//當numberOfLine爲0時行數不受限制
        //設置文本高亮
        label.isHighlighted = true
        //設置文本高亮顏色
        label.highlightedTextColor = UIColor.red
        //富文本設置
        let attributedString = NSMutableAttributedString(string: "for Development")
        
        attributedString.addAttribute(NSAttributedString.Key.font, value: UIFont(name: "Farah", size: 18)!,range: NSRange(location: 0, length: 5))
        
        attributedString.addAttribute(NSAttributedString.Key.strokeWidth, value: 3, range: NSMakeRange(6, 9))
        
        attributedString.addAttribute(NSAttributedString.Key.underlineStyle, value: 1, range:NSRange(location: 16, length: 3))
        
        label.attributedText = attributedString
        
    }
    
}