SwiftUI中如何添加项目内的本地视频？

No problem at all! Let's tweak your existing code to play a local video file from your project bundle instead of a remote URL. Here's the updated version, with explanations of the key changes:

Modified Code #

import AVKit
import UIKit
import SwiftUI

class UIVideoPlayer: UIView {
    var playerLayer = AVPlayerLayer()
    var player: AVPlayer? // Make player a property for easier playback control later
    
    override init(frame: CGRect) {
        super.init(frame: frame)
        
        // 1. Fetch URL for your local video file in the app bundle
        // Replace "your-local-video" with your actual video filename (without .mp4)
        guard let url = Bundle.main.url(forResource: "your-local-video", withExtension: "mp4") else {
            print("Error: Local video file not found in bundle!")
            return
        }
        
        // 2. Initialize player with local URL (keeps your original playback settings)
        player = AVPlayer(url: url)
        player?.isMuted = true
        player?.play()
        
        // 3. Attach player to layer and configure layout
        playerLayer.player = player
        playerLayer.videoGravity = .resizeAspectFill // Cleaner syntax for the same aspect fill behavior
        layer.addSublayer(playerLayer)
    }
    
    override func layoutSubviews() {
        super.layoutSubviews()
        playerLayer.frame = bounds // Ensure the player layer matches the view's size
    }
    
    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    // Optional: Add helper methods if you need to control playback later
    func play() {
        player?.play()
    }
    
    func pause() {
        player?.pause()
    }
}

struct Players: UIViewRepresentable {
    func makeUIView(context: Context) -> UIVideoPlayer {
        return UIVideoPlayer()
    }
    
    func updateUIView(_ uiView: UIVideoPlayer, context: Context) {
        // No changes needed here unless you want to add dynamic playback updates later
    }
}

Key Changes Explained #

• Local File URL: Replaced the remote URL with Bundle.main.url(forResource:withExtension:) to access files stored directly in your app's bundle. Remember to swap "your-local-video" with your actual video filename (leave off the .mp4 extension here).
• Player Property: Made player a class property so you can easily add playback controls (like play/pause buttons) down the line if you need them.
• Simplified Syntax: Used the shorter .resizeAspectFill enum case instead of the raw value syntax—it does the exact same thing, just looks cleaner.

Critical Setup Step #

Before testing, make sure your local video is properly added to your Xcode project:

1. Drag and drop the video file into your project navigator.
2. When prompted, check "Copy items if needed" and select your app target under "Add to targets".
3. Double-check that the file appears in your target's Build Phases > Copy Bundle Resources list—this ensures it gets included in the final app bundle.

内容的提问来源于stack exchange，提问作者user16253979