iPhone screen turning black after launch image

Question

So everything were going great and my app was almost done, until this happened. Did not make any changes exept trying to run it in iOS Simulater. When I was going to try it on my iPhone again the screen turns black after the launch image!! And I don't get any errors in xcode.

I've tried to clean my project, resetting iOS Simulator (just for kicks), restarting my Macbook, restarting iPhone, delete the app from homescreen and install it again.

Building for iOS 6 on my iPhone 5.

AppDelegate.h

//
//  AppDelegate.h
//  
//
//  Created by Øyvind Larsen Runestad on 13.01.13.
//  Copyright (c) 2013 Øyvind Larsen Runestad. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface AppDelegate : UIResponder <UIApplicationDelegate> {

IBOutlet UITabBarController *tabBarController;
}
@property (strong, nonatomic) UIWindow *window;

@property(nonatomic, readonly) UITabBarController *moreNavigationController;

@end

AppDelegate.m

//
//  AppDelegate.m
//  
//
//  Created by Øyvind Larsen Runestad on 13.01.13.
//  Copyright (c) 2013 Øyvind Larsen Runestad. All rights reserved.
//

#import "AppDelegate.h"

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    // Override point for customization after application launch.
    return YES;
}

- (void)applicationWillResignActive:(UIApplication *)application
{
    // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
    // Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game.
}

- (void)applicationDidEnterBackground:(UIApplication *)application
{
    // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later. 
    // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
}

- (void)applicationWillEnterForeground:(UIApplication *)application
{
    // Called as part of the transition from the background to the inactive state; here you can undo many of the changes made on entering the background.
}

- (void)applicationDidBecomeActive:(UIApplication *)application
{
    // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
}

- (void)applicationWillTerminate:(UIApplication *)application
{
    // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
}

@end

Anyone have any solutions to this problem?

Best regards, Øyvind Larsen Runestad.

EDIT: SOLVED!

Okay, i sorted it out. The Main Storyboard in the project was set to blank. All I had to do was to change this to MainStoryboard.

Seems like my AppDelegate is okay after all @H2CO3 ;)

Answer 1

如果这确实是您的实际代码，那么问题就出在以下方面：在应用启动时，您没有创建密钥窗口。