在XCode 6中创建新项目不允许禁用Storyboard。您只能选择Swift或Objective-C并使用或不使用Core Data。
我尝试删除故事板，从项目中删除主故事板，并从didFinishLaunching手动设置窗口
在AppDelegate中我有这个：
class AppDelegate: UIResponder, UIApplicationDelegate {
var window: UIWindow
var testNavigationController: UINavigationController
func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: NSDictionary?) -> Bool {
testNavigationController = UINavigationController()
var testViewController: UIViewController = UIViewController()
self.testNavigationController.pushViewController(testViewController, animated: false)
self.window = UIWindow(frame: UIScreen.mainScreen().bounds)
self.window.rootViewController = testNavigationController
self.window.backgroundColor = UIColor.whiteColor()
self.window.makeKeyAndVisible()
return true
}
}
但是，XCode给了我一个错误：
类'AppDelegate'没有初始值设定项
任何人都成功了吗？
您必须将window和testNavigationController变量标记为可选：
var window : UIWindow?
var testNavigationController : UINavigationController?
Swift类需要在实例化期间初始化非可选属性：
在创建该类或结构的实例时，类和结构必须将其所有存储的属性设置为适当的初始值。存储的属性不能保留在不确定的状态。
可选类型的属性将自动初始化，值为nil，表示该属性在初始化期间故意具有“无值”。
使用可选变量时，请记得用!打开它们，例如：
self.window!.backgroundColor = UIColor.whiteColor();
你为什么不创建一个空的应用程序？故事板不是为我创造的......
我们可以在Xcode 6（iOS 8）中创建没有故事板的基于导航的应用程序，如下所示：
以下是与控件和Swift一起使用的一些片段
//
// TestViewController.swift
//
import UIKit
class TestViewController: UIViewController {
@IBOutlet var testBtn : UIButton
init(nibName nibNameOrNil: String?, bundle nibBundleOrNil: NSBundle?) {
super.init(nibName: nibNameOrNil, bundle: nibBundleOrNil)
// Custom initialization
}
@IBAction func testActionOnBtn(sender : UIButton) {
let cancelButtonTitle = NSLocalizedString("OK", comment: "")
let alertController = UIAlertController(title: "Title", message: "Message", preferredStyle: .Alert)
// Create the action.
let cancelAction = UIAlertAction(title: cancelButtonTitle, style: .Cancel) { action in
NSLog("The simple alert's cancel action occured.")
}
// Add the action.
alertController.addAction(cancelAction)
presentViewController(alertController, animated: true, completion: nil)
}
override func viewDidLoad() {
super.viewDidLoad()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
}
AppDelegate.swift文件中的更改
//
// AppDelegate.swift
//
import UIKit
@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {
var window: UIWindow?
var navigationController: UINavigationController?
func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: NSDictionary?) -> Bool {
self.window = UIWindow(frame: UIScreen.mainScreen().bounds)
self.window!.backgroundColor = UIColor.whiteColor()
self.window!.makeKeyAndVisible()
var testController: TestViewController? = TestViewController(nibName: "TestViewController", bundle: nil)
self.navigationController = UINavigationController(rootViewController: testController)
self.window!.rootViewController = self.navigationController
return true
}
func applicationWillResignActive(application: UIApplication) {
}
func applicationDidEnterBackground(application: UIApplication) {
}
func applicationWillEnterForeground(application: UIApplication) {
}
func applicationDidBecomeActive(application: UIApplication) {
}
func applicationWillTerminate(application: UIApplication) {
}
}
不使用故事板为rootViewController所需的一切：
1·将AppDelegate.swift更改为：
import UIKit
@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {
var window: UIWindow?
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey : Any]? = nil) -> Bool {
window = UIWindow(frame: UIScreen.main.bounds)
if let window = window {
window.backgroundColor = UIColor.white
window.rootViewController = ViewController()
window.makeKeyAndVisible()
}
return true
}
}
2·创建ViewController的UIViewController子类：
import UIKit
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
view.backgroundColor = UIColor.blue
}
}
3·如果您从Xcode模板创建项目：
"Main storyboard file base name"中删除密钥Info.plist的键值对。Main.storyboard。正如您在第一个代码片段中看到的，我更喜欢隐藏可选的if let属性的window语法，而不是隐式展开可选的代码片段。在这里我像if let a = a { }一样使用它，以便可选的a成为if语句中同名的一个非可选引用 - a。
最后，当引用其自己的类中的self.属性时，window不是必需的。
如果要使用xib初始化viewController并且需要使用导航控制器。这是一段代码。
var window: UIWindow?
var navController:UINavigationController?
var viewController:ViewController?
func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
window = UIWindow(frame: UIScreen.mainScreen().bounds)
viewController = ViewController(nibName: "ViewController", bundle: nil);
navController = UINavigationController(rootViewController: viewController!);
window?.rootViewController = navController;
window?.makeKeyAndVisible()
return true
}
请尝试以下代码：
func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: NSDictionary?) -> Bool {
self.window = UIWindow(frame: UIScreen.mainScreen().bounds)
self.window!.backgroundColor = UIColor.whiteColor()
// Create a nav/vc pair using the custom ViewController class
let nav = UINavigationController()
let vc = NextViewController ( nibName:"NextViewController", bundle: nil)
// Push the vc onto the nav
nav.pushViewController(vc, animated: false)
// Set the window’s root view controller
self.window!.rootViewController = nav
// Present the window
self.window!.makeKeyAndVisible()
return true
}
我找到了与xcode设置无关的答案，删除了故事板，项目中的引用是正确的。它与快速语法有关。
代码如下：
class AppDelegate: UIResponder, UIApplicationDelegate {
var window: UIWindow?
var testNavigationController: UINavigationController?
func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: NSDictionary?) -> Bool {
self.testNavigationController = UINavigationController()
var testViewController: UIViewController? = UIViewController()
testViewController!.view.backgroundColor = UIColor.redColor()
self.testNavigationController!.pushViewController(testViewController, animated: false)
self.window = UIWindow(frame: UIScreen.mainScreen().bounds)
self.window!.rootViewController = testNavigationController
self.window!.backgroundColor = UIColor.whiteColor()
self.window!.makeKeyAndVisible()
return true
}
}
你可以这样做：
class AppDelegate: UIResponder, UIApplicationDelegate {
var window: UIWindow?
var IndexNavigationController: UINavigationController?
func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: NSDictionary?) -> Bool {
var IndexViewContoller : IndexViewController? = IndexViewController()
self.IndexNavigationController = UINavigationController(rootViewController:IndexViewContoller)
self.window = UIWindow(frame: UIScreen.mainScreen().bounds)
self.window!.rootViewController = self.IndexNavigationController
self.window!.backgroundColor = UIColor.whiteColor()
self.window!.makeKeyAndVisible()
return true
}
}
我建议你使用控制器和xib
MyViewController.swift和MyViewController.xib
（您可以通过File-> New-> File-> Cocoa Touch Class创建并设置“也创建XIB文件”为真，UIViewController的子类）
class MyViewController: UIViewController {
.....
}
并在AppDelegate.swift func application写下面的代码
....
var controller: MyViewController = MyViewController(nibName:"MyViewController",bundle:nil)
self.window!.rootViewController = controller
return true
它应该是工作！
针对Swift 3.0进行了更新：
window = UIWindow()
window?.rootViewController = ViewController()
window?.makeKeyAndVisible()
这是一个完整的UINavigationController快速测试示例
import UIKit
@UIApplicationMain
class KSZAppDelegate: UIResponder, UIApplicationDelegate {
var window: UIWindow?
var testNavigationController: UINavigationController?
func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
// Override point for customization after application launch.
// Working WITHOUT Storyboard
// see http://randexdev.com/2014/07/uicollectionview/
// see http://stackoverflow.com/questions/24046898/how-do-i-create-a-new-swift-project-without-using-storyboards
window = UIWindow(frame: UIScreen.mainScreen().bounds)
if let win = window {
win.opaque = true
//you could create the navigation controller in the applicationDidFinishLaunching: method of your application delegate.
var testViewController: UIViewController = UIViewController()
testNavigationController = UINavigationController(rootViewController: testViewController)
win.rootViewController = testNavigationController
win.backgroundColor = UIColor.whiteColor()
win.makeKeyAndVisible()
// see corresponding Obj-C in https://developer.apple.com/library/ios/documentation/WindowsViews/Conceptual/ViewControllerCatalog/Chapters/NavigationControllers.html#//apple_ref/doc/uid/TP40011313-CH2-SW1
// - (void)applicationDidFinishLaunching:(UIApplication *)application {
// UIViewController *myViewController = [[MyViewController alloc] init];
// navigationController = [[UINavigationController alloc]
// initWithRootViewController:myViewController];
// window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// window.rootViewController = navigationController;
// [window makeKeyAndVisible];
//}
}
return true
}
}