Pushing UIViewController in navigationcontroller shows empty view

Question

I am facing the problem that when I push my viewcontroller in the navigationcontroller all it does is changing the navigationbar and showing the standard background but no view is to be seen. My code for pushing the viewcontroller into the navigationcontroller looks like:

Viewcontroller1 *viewController = [[Viewcontroller1 alloc] autorelease];
[[self navigationController] pushViewController:viewController animated:YES];

But, if I initialise the viewcontroller by creating IBOutlets for it, it works just fine. But the reason why I am not doing that is because I later on needs to pass some parameters to the class on initialization.

Thanks for your time.

You are totally abusing the system doing this - no wonder you have huge problems. You should create the object normally. The view controller does not call viewDidLoad until someone accesses its view property, so you have lots of opportunity to configure properties BEFORE you then go and push it. — David Hoerl
– David Hoerl, Commented Jul 31, 2012 at 11:16
Okay, I am new to ios programming this so wasn't aware of that. Thanks. But what do you exactly mean by creating the object normally ? — user1188650
– user1188650, Commented Jul 31, 2012 at 11:30
[[MyViewController alloc] initWithNib:@"MyViewController" bundle:nil]; — David Hoerl
– David Hoerl, Commented Jul 31, 2012 at 11:35
obvious error is absence of init (or init-like initialized) after alloc. — Yevhen Dubinin
– Yevhen Dubinin, Commented Nov 6, 2013 at 16:18

Hiren · Accepted Answer · 2012-07-31 11:39:27Z

3

You have to initialise your view like

if you have xib then

Viewcontroller1 *viewController = [[[Viewcontroller1 alloc] initWithNibName:@"Viewcontroller1" bundle:nil]autorelease];
[[self navigationController] pushViewController:viewController animated:YES];

if you haven't xib

Viewcontroller1 *viewController = [[[Viewcontroller1 alloc] init]autorelease];
[[self navigationController] pushViewController:viewController animated:YES];

edited Jul 31, 2012 at 11:39

answered Jul 31, 2012 at 11:16

Hiren

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14 Comments

user1188650 Over a year ago

I already tried that and wont work neither. All the Viewcontrollers are within the same xib. It gives the exception: *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[Viewcontroller1 initWithNibName:]:

user1188650 Over a year ago

Using your seconds method, with just "init" results in a blank page without the view but just the navigationbar.

Hiren Over a year ago

check with this line viewController.title=@"View"; add this line before navigation and after initialization. if you get the title view in your navigation that means it navigate to ViewController1

user1188650 Over a year ago

It does give the proper title. So yes it navigates, but doesn't show any view.

Hiren Over a year ago

can you post your ViewController's viewDidload method?

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