如何在swift中绘制UIView格式的tic tac toe板？

import UIKit

func drawTicTacToeBoard() {
    let boardSize: CGFloat = 300 // 棋盘的大小
    let cellSize = boardSize / 3 // 每个格子的大小
    
    // 创建一个UIView作为棋盘
    let boardView = UIView(frame: CGRect(x: 0, y: 0, width: boardSize, height: boardSize))
    boardView.center = view.center
    boardView.backgroundColor = .white
    
    // 绘制水平和垂直的线条
    for i in 1...2 {
        let lineViewH = UIView(frame: CGRect(x: 0, y: cellSize * CGFloat(i), width: boardSize, height: 1))
        lineViewH.backgroundColor = .black
        boardView.addSubview(lineViewH)
        
        let lineViewV = UIView(frame: CGRect(x: cellSize * CGFloat(i), y: 0, width: 1, height: boardSize))
        lineViewV.backgroundColor = .black
        boardView.addSubview(lineViewV)
    }
    
    // 将棋盘添加到视图中
    view.addSubview(boardView)
}

override func viewDidLoad() {
    super.viewDidLoad()
    drawTicTacToeBoard()
}