Question

我正在尝试在UINavigationController中使用rootViewController实例化AppDelegate。我看过这个网站，但是所有的例子都来自Objective-C或者用过的故事板（我试图摆脱它）。 'HomeScreenController`是应用程序的根视图。

编辑：这会显示在控制台中

2015-07-18 14:42:25.376 FastFactsSwift[4749:343495] Failed to instantiate the default view controller for UIMainStoryboardFile 'Main' 
- perhaps the designated entry point is not set?

我该如何解决这个问题？

以下代码只会出现黑屏：

AppDelegate.swift：

import UIKit

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

var window: UIWindow?


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

    self.window?.rootViewController = UINavigationController(rootViewController: HomeScreenController())

    return true
}
...

HomeScreenController.swift：

import UIKit

class HomeScreenController: UIViewController, UISearchBarDelegate, UITableViewDelegate{
    override func viewDidLoad(){

        super.viewDidLoad()

        var width = self.view.viewWidth
        var height = self.view.viewHeight

        //Add stuff to the view
}
...

为什么HomeScreenController会显示为黑屏？

Answer 1

问题是没有将AppDelegate配置为不使用故事板。

How do I create a new Swift project without using Storyboards?

在AppDelegate中实例化UINavigationController

1 个答案: