在Swift中哪里初始化我的应用程序的基类

Question

I have a class named Home which is the parent class of my app. Now, I want to initialize this class somewhere so that I can access everything inside the class from wherever I want. The starting point of the app is RootViewController . Should I initialize the app in the starting point? If yes, how should I do it so that it can be accessed from everywhere in the app?

Answer 1

As per my comment above, set a property on the AppDelegate class with the type Home, initialize it in application:didFinishLaunchingWithOptions. Now you can access this instance of home through the sharedApplication.delegate.

In AppDelegate.swift:

import UIKit

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

    var window: UIWindow?

    var myHome: Home?


    func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: NSDictionary?) -> Bool {
        // Override point for customization after application launch.

        self.myHome = Home()

        return true
    }

Then access it in some other class:

let delegate = UIApplication.sharedApplication().delegate as AppDelegate
var home = delegate.myHome