Question

I’ve tried every solution on Google and nothing seems to work. So far I’ve implemented a UINavigationController with the App Delegate, now all I want to accomplish is changing to the WebViewController by clicking the UIButton I’ve created in the interface builder, but the button doesn’t seem to do anything when I run the application. Keep in mind that I want it to push to my WebViewController view.

AppDelegate.m

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

    UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:self.viewController];  
    [self.window addSubview:navigationController.view];

    [self.window makeKeyAndVisible];
    return YES;
}

ViewController.m

- (IBAction)createFile:(id)sender {
    WebViewController *webViewController = [[WebViewController alloc] initWithNibName:@"WebViewController" bundle:NSBundle.mainBundle];
    [self.navigationController pushViewController:webViewController animated:YES];
}

Note: In the interface builder I’ve already connected createFile to the button.

I understand that this is usually something that comes known as super easy but for some reason I’ve just never gotten it to work. Thanks in advance.

EDIT: I added the retaining property, sythesized it and added to my code in the ViewController.m file:

WebViewController *webViewController = [[WebViewController alloc] initWithNibName:@"WebViewController" bundle:NSBundle.mainBundle];
self.navigationController = [[UINavigationController alloc] initWithRootViewController:webViewController];
[self.navigationController pushViewController:webViewController animated:YES];

But now the app crashes on the button click and returns with a SIGABRT: “Pushing the same view controller instance more than once is not supported (WebViewController: 0x1ed70e80)“

Answer 1

give this a try

-(IBAction)createFile:(id)sender{
    WebViewController *webViewController = [[WebViewController alloc]
     initWithNibName:@"WebViewController" bundle:nil];
    webViewController.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
    [self presentModalViewController:webViewController animated:YES];
}