I have a problem in AppDelegate, when run the app I get this error:
Terminating app due to uncaught exception 'NSUnknownKeyException', reason:
'[<UIApplication 0x856c820> setValue:forUndefinedKey:]:
this class is not key value coding-compliant for the key view.'
This is the code of AppDelegate.h
#import <UIKit/UIKit.h>
@class ViewController;
@interface AppDelegate : UIResponder <UIApplicationDelegate>{
//UINavigationController *navigationController;
}
@property (strong, nonatomic) UIWindow *window;
@property (copy, nonatomic) ViewController * viewController;
@property (copy, nonatomic) UINavigationController * navigationController;
@end
This is the code of AppDelegate.m
#import "AppDelegate.h"
#import "RootViewController.h"
@implementation AppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions: (NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
RootViewController *rootMenu;
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {
rootMenu= [[RootViewController alloc] initWithNibName:@"ViewController_iPhone" bundle:nil];
} else {
rootMenu = [[RootViewController alloc]initWithNibName:@"ViewController_iPad" bundle:nil];
}
self.navigationController =[[UINavigationController alloc]initWithRootViewController:rootMenu];
self.window.rootViewController = self.navigationController;
[self.window makeKeyAndVisible];
return YES;
}
What can I do to resolve this error? I have rewritten the RootViewController, throwing in the trash the old one, but the problem remains the same.Thanks in advance
This usually happens when an Interface Builder or Storyboard connection hasn't properly been made. Sometimes you'll make a connection, and then delete the code that the connection was made to. Interface Builder still has a reference to the code, which causes the key/value compliant run time error. You can also get this error if you haven't assigned the proper class to a view controller. If you've written code for a particular view controller, be sure to set the class appropriately in Interface Builder for that View Controller.