Question

When i create a iboutlet to my navigationController and try to add it to the currentview it isn’t showing anything. Its really strange, when i initialize my navigationController in code and then add it to the view it works perfectly.

It even works when i make one in the mainWindows.xib and add it to the view in my applicationDidFinishLaunching method.

But as soon as i try to load it from another viewController it fails and i am left with a blank screen.

So it works when i add it programmatically or add it in my mainWindow.xib.

I have been trying for hours to get it working. It seems so simple, but i can’t get it to work in other xib files.

My setup:

#import "RootViewController.h"

RootViewController *rootViewController=[[RootViewController alloc] init];
[window addSubview:rootViewController.navController.view];

My RootViewController has the ibOutlet to the navigationController.

Does anyone have a idea? I totally dont understand why this simple thing isn’t working. What am i missing, its driving me crazy.

****UPDATE****
The above code works if i change it to:
I need to acces the rootViewController.view otherwise it won’t work why?

#import "RootViewController.h"

RootViewController *rootViewController=[[RootViewController alloc] init];
if(rootViewController.view){
NSLog(@"nil"); 
}
[window addSubview:rootViewController.navController.view];

Thanks in advance!

Answer 1

This is because accessing view actually invokes the getter, which creates the controller’s view lazily (on-demand). The rootController‘s view doesn’t exist until you first invoke the view getter method. The usual way to create the first app view is

[window addSubview:someController.view]

and it takes care of creating the view.