将播放器UIView调整为全屏大小(来自表头)

import UIKit

class PlayerViewController: UIViewController {
    var playerView: UIView!

    override func viewDidLoad() {
        super.viewDidLoad()
        
        // 创建播放器UIView
        playerView = UIView(frame: CGRect(x: 0, y: 0, width: 320, height: 240))
        view.addSubview(playerView)
        
        // 播放器全屏按钮点击事件
        let fullscreenButton = UIButton(frame: CGRect(x: 0, y: 0, width: 100, height: 50))
        fullscreenButton.setTitle("全屏", for: .normal)
        fullscreenButton.addTarget(self, action: #selector(fullscreenButtonTapped), for: .touchUpInside)
        view.addSubview(fullscreenButton)
    }
    
    @objc func fullscreenButtonTapped() {
        // 获取屏幕尺寸
        let screenWidth = UIScreen.main.bounds.width
        let screenHeight = UIScreen.main.bounds.height
        
        // 设置播放器UIView的frame为全屏尺寸
        playerView.frame = CGRect(x: 0, y: 0, width: screenWidth, height: screenHeight)
        
        // 调整其他相关布局
        // ...
    }
}