Question

我知道其中有很多这些，但没有一个解决方案适合我。

情况如下：

AppDelegate.h

#import <UIKit/UIKit.h>
#import "SphereViewController.h"

@interface AppDelegate : UIResponder <UIApplicationDelegate>

@property (strong, nonatomic) UIWindow *window;
@property (strong, nonatomic) SphereViewController *sphereViewController;

@end

AppDelegate.m

#import "AppDelegate.h"

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    // Override point for customization after application launch.

    self.sphereViewController = [[SphereViewController alloc] initWithNibName:@"SphereViewController" bundle:nil];

    NSLog(@"%@", self.sphereViewController);

    self.window.rootViewController = self.sphereViewController;

    [self.window makeKeyAndVisible];
    return YES;
}

...

@end

运行此代码时，会记录以下内容：

2014-01-04 21:21:18.691 Sphere[4978:70b] <SphereViewController: 0x10931c600>
2014-01-04 21:25:25.145 Sphere[4978:70b] Application windows are expected to have a root view controller at the end of application launch

为什么即使我正在设置它也会出现根视图控制器错误？

Answer 1

事实证明，由于某些原因，我的xib中文件所有者的view属性被设置为GLKView，这显然会导致此错误。

要修复，请确保您的view属性已正确关联。

应用程序启动结束时的根视图控制器

1 个答案: