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POPushing from One View to Another via UIButton (UINavigationController)
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copied!<p>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 <em>WebViewController</em> 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 <em>push</em> to my <em>WebViewController</em> view.</p> <p><strong>AppDelegate.m</strong></p> <pre><code>- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:self.viewController]; [self.window addSubview:navigationController.view]; [self.window makeKeyAndVisible]; return YES; } </code></pre> <p><strong>ViewController.m</strong></p> <pre><code>- (IBAction)createFile:(id)sender { WebViewController *webViewController = [[WebViewController alloc] initWithNibName:@"WebViewController" bundle:NSBundle.mainBundle]; [self.navigationController pushViewController:webViewController animated:YES]; } </code></pre> <p><strong>Note:</strong> In the interface builder I've already connected <em>createFile</em> to the button.</p> <p>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.</p> <p><strong>EDIT:</strong> I added the retaining property, sythesized it and added to my code in the ViewController.m file:</p> <pre><code>WebViewController *webViewController = [[WebViewController alloc] initWithNibName:@"WebViewController" bundle:NSBundle.mainBundle]; self.navigationController = [[UINavigationController alloc] initWithRootViewController:webViewController]; [self.navigationController pushViewController:webViewController animated:YES]; </code></pre> <p>But now the app crashes on the button click and returns with a SIGABRT: "<em>Pushing the same view controller instance more than once is not supported (WebViewController: 0x1ed70e80)</em>"</p>

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