如何在SwiftUI中管理AVPlayer状态

import AVKit
import AVFoundation

@State private var player = AVPlayer()
@State private var playerViewController = AVPlayerViewController()

guard let videoURL = Bundle.main.url(forResource: "video", withExtension: "mp4") else { return }
let playerItem = AVPlayerItem(url: videoURL)
player.replaceCurrentItem(with: playerItem)

var body: some View {
    VStack {
        VideoPlayer(player: player)
            .onAppear {
                player.play()
            }
            .onDisappear {
                player.pause()
            }
    }
    .onAppear {
        playerViewController.player = player
        playerViewController.showsPlaybackControls = false
    }
    .sheet(isPresented: $isPresentingPlayerView) {
        playerViewController
    }
}