如何从类写入SwiftUI环境对象(-extension)

import SwiftUI
import Combine

class AppSettings: ObservableObject {
    @Published var themeColor: Color = .blue
    // 其他环境对象的属性和方法
}

struct ContentView: View {
    @EnvironmentObject var appSettings: AppSettings
    
    var body: some View {
        // 使用appSettings中的属性和方法
        Text("Theme Color: \(appSettings.themeColor.description)")
    }
}

class SceneDelegate: UIResponder, UIWindowSceneDelegate {
    var window: UIWindow?
    let appSettings = AppSettings() // 创建环境对象实例
    
    func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
        // 将环境对象注入到视图层次结构中
        let contentView = ContentView().environmentObject(appSettings)
        
        // 其他设置代码
    }
    
    // 其他SceneDelegate方法
}