Question

I have the following code in my AppDelegate:

#import <UIKit/UIKit.h>

@class PersonalDiarySystemViewController;

@interface PersonalDiarySystemAppDelegate : NSObject <UIApplicationDelegate> {
    UIWindow *window;
    PersonalDiarySystemViewController *viewController;
    UINavigationController *navigationController;

}

@property (nonatomic, retain) IBOutlet UIWindow *window;
@property (nonatomic, retain) IBOutlet PersonalDiarySystemViewController *viewController;
@property (nonatomic, retain) UINavigationController *navigationController;

@end

#import "PersonalDiarySystemAppDelegate.h"
#import "PersonalDiarySystemViewController.h"

@implementation PersonalDiarySystemAppDelegate

@synthesize window;
@synthesize viewController;
@synthesize navigationController;

#pragma mark -
#pragma mark Application lifecycle

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {    

    // Override point for customization after application launch.

    // Set the view controller as the window's root view controller and display.
    self.window.rootViewController = self.viewController;
    navigationController = [[UINavigationController alloc] initWithRootViewController:self.window.rootViewController];  
    navigationController.navigationBar.tintColor = [UIColor   
                                                         colorWithRed:217.0/255   
                                                         green:33.0/255 
                                                         blue:0   
                                                         alpha:1];
    navigationController.navigationBarHidden = YES;
    [self.window addSubview:navigationController.view];
    [self.window makeKeyAndVisible];

    return YES;
}

My rootviewcontroller tries to load another viewcontroller into the navigation controllers stack in its viewDidLoad method but for some reason the view is not getting pushed:

-(void) viewDidLoad{    
    lvc = [[LoginViewController alloc] init];
    //lvc.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
    [lvc setDelegate:self]; 
    //[self presentModalViewController:lvc animated:YES];   
    [self.navigationController pushViewController:lvc animated:YES];    
}

I’m getting no errors so not sure whats going on…using presentModalViewController works…so really am confused!!

Answer 1

You need to assign lvc to LoginViewController.

- (void) viewDidAppear
{    
    [self performSelector:@selector(loginCheck:) withObject:nil afterDelay:0.5];
}    
- (void) loginCheck:(id)sender
{
    LoginViewController * lvc = [[LoginViewController alloc] init];
    //lvc.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
    [lvc setDelegate:self]; 
    //[self presentModalViewController:lvc animated:YES];   
    [self.navigationController pushViewController:lvc animated:YES];   
}