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objective-cuinavigationcontroller

UINavigationController transition from parent to grandchild

I need to transition from a parent view controller to grandchild view controller in a UINavigationController hierarchy. How can I do that? I tried these ... 

NSMutableArray *vcs = [[self.navigationController viewControllers] mutableCopy];

// menuvc is next 
NOZMenuTVController *menuvc = [self.storyboard instantiateViewControllerWithIdentifier:@"menuViewController"];
[vcs addObject:menuvc];

// payvc comes after menu vc as in a master detail relationship 
NOZPaymentViewController *payvc = [self.storyboard instantiateViewControllerWithIdentifier:@"paymentViewController"];
[vcs addObject:payvc];

// This causes a crash
[self.navigationController setViewControllers:vcs animated:YES];

This works at first but then causes crash when I come back and try again 

NOZMenuTVController *menuvc = [self.storyboard instantiateViewControllerWithIdentifier:@"menuViewController"];
[self.navigationController pushViewController:menuvc animated:NO];

NOZPaymentViewController *payvc = [self.storyboard instantiateViewControllerWithIdentifier:@"paymentViewController"];
[self.navigationController pushViewController:payvc animated:YES];
Solution

  • The second solution works. It did not work earlier because somewhere in child controllers, I was setting the delegate for UINavigationController (setting the delegate for navctrl to nil during dealloc did not help) and when user came back, the nav controller was not itself anymore.