iOS Appdelegate字段填充和对象创建

import UIKit

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

    var window: UIWindow?
    var networkManager: NetworkManager?
    var databaseManager: DatabaseManager?

    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        
        // 字段填充
        let config = Configuration.loadConfig() // 从配置文件中加载配置信息
        networkManager = NetworkManager(apiKey: config.apiKey) // 使用配置信息初始化网络请求管理器
        databaseManager = DatabaseManager(databaseName: config.databaseName) // 使用配置信息初始化数据库管理器
        
        // 对象创建
        let viewController = ViewController(networkManager: networkManager, databaseManager: databaseManager)
        window = UIWindow(frame: UIScreen.main.bounds)
        window?.rootViewController = viewController
        window?.makeKeyAndVisible()
        
        return true
    }
    
    // 其他AppDelegate方法...
}