UIBarButtonItem Action not working

mouser58907 · 10-23-2010, 05:09 PM

Here is my code, why in the world will this not call HideNavController?!?

HomePageController.h

Code:

-(void)HideNavBar:(id)sender;

HomePageController.m

Code:

- VIEW DID LOAD {
...
	UIBarButtonItem *temporaryBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"Back" style:UIBarButtonItemStyleBordered target:self action:@selector(HideNavBar:)];
	temporaryBarButtonItem.title = @"Back";
	self.navigationItem.backBarButtonItem = temporaryBarButtonItem;
	//[temporaryBarButtonItem release];
}

-(void)HideNavBar:(id)sender{
	[[self navigationController] setNavigationBarHidden:YES];
}

It compiles fine, but never calls HideNavBar!!!

mouser58907 · 10-25-2010, 01:27 PM

thomashw · 10-25-2010, 01:43 PM

How do you know it doesn't call the method? Have you tried throwing an NSLog in there, or setting a breakpoint?

aldcorn@live.com · 10-25-2010, 02:25 PM

Quote:

Originally Posted by mouser58907

Here is my code, why in the world will this not call HideNavController?!?

HomePageController.h

Code:

-(void)HideNavBar:(id)sender;

HomePageController.m

Code:

- VIEW DID LOAD {
...
	UIBarButtonItem *temporaryBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"Back" style:UIBarButtonItemStyleBordered target:self action:@selector(HideNavBar:)];
	temporaryBarButtonItem.title = @"Back";
	self.navigationItem.backBarButtonItem = temporaryBarButtonItem;
	//[temporaryBarButtonItem release];
}

-(void)HideNavBar:(id)sender{
	[[self navigationController] setNavigationBarHidden:YES];
}

It compiles fine, but never calls HideNavBar!!!

Try:

Code:

[NavigationBar setHidden:YES];

mouser58907 · 10-25-2010, 06:08 PM

Quote:

Originally Posted by thomashw

How do you know it doesn't call the method? Have you tried throwing an NSLog in there, or setting a breakpoint?

Yeah, I've been trying breakpoints. Also, aldcorn, I used setNavigationBarHidden: YES earlier in the code to hide it initially and it worked fine. Thanks for the responses.

aldcorn@live.com · 10-25-2010, 09:07 PM

Hi,
What user action is supposed to fire the action? Button press?

This is not clear to me. If you are just trying to hide the navbar you can just do that in the viewWillAppear?

[setNavigationBarHidden: YES];

Quote:

Originally Posted by mouser58907

Yeah, I've been trying breakpoints. Also, aldcorn, I used setNavigationBarHidden: YES earlier in the code to hide it initially and it worked fine. Thanks for the responses.

aldcorn@live.com · 10-25-2010, 10:07 PM

My last try and then I will leave it to the experts

Code:

navController.navigationBarHidden = YES;

Quote:

Originally Posted by mouser58907

Yeah, I've been trying breakpoints. Also, aldcorn, I used setNavigationBarHidden: YES earlier in the code to hide it initially and it worked fine. Thanks for the responses.

mouser58907 · 10-25-2010, 11:58 PM

aldcorn, thank you so much. I totally blanked on using viewWillAppear. Not sure why it didn't work before, but using viewWillAppear works marvelously!

aldcorn@live.com · 10-26-2010, 12:00 AM

Glad I could help!

Take care,
Rob