MPMoviePlayerController 全屏旋转，而父视图控制器仅支持纵向

iOS开发中，有时我们需要在应用中播放视频，并且能够实现全屏旋转的效果。在实现全屏旋转时，可能会遇到一个问题，就是父视图控制器仅支持纵向，而我们需要在全屏播放时能够支持横向。那么，该如何解决这个问题呢？

swift
import UIKit
import MediaPlayer
class ViewController: UIViewController {
    
    var moviePlayer: MPMoviePlayerController!
    var fullscreen = false
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        // 初始化MPMoviePlayerController
        let videoURL = URL(string: "http://example.com/video.mp4")
        moviePlayer = MPMoviePlayerController(contentURL: videoURL)
        moviePlayer.view.frame = CGRect(x: 0, y: 0, width: view.frame.width, height: 200)
        moviePlayer.controlStyle = .none
        view.addSubview(moviePlayer.view)
        
        // 注册通知
        NotificationCenter.default.addObserver(self, selector: #selector(moviePlayerDidFinish), name: NSNotification.Name.MPMoviePlayerPlaybackDidFinish, object: nil)
        
        // 添加全屏切换按钮
        let fullscreenButton = UIButton(frame: CGRect(x: 0, y: 220, width: 100, height: 30))
        fullscreenButton.setTitle("全屏", for: .normal)
        fullscreenButton.addTarget(self, action: #selector(toggleFullscreen), for: .touchUpInside)
        view.addSubview(fullscreenButton)
    }
    
    @objc func moviePlayerDidFinish() {
        // 处理视频播放完成的逻辑
    }
    
    @objc func toggleFullscreen() {
        if fullscreen {
            moviePlayer.view.frame = CGRect(x: 0, y: 0, width: view.frame.width, height: 200)
            view.addSubview(moviePlayer.view)
            fullscreen = false
        } else {
            moviePlayer.view.frame = UIScreen.main.bounds
            UIApplication.shared.keyWindow?.addSubview(moviePlayer.view)
            fullscreen = true
        }
    }
    
    override func shouldAutorotate() -> Bool {
        return false
    }
}

swift
override func shouldAutorotate() -> Bool {
    return false
}