error with multiple navigationControllers

Question

I´m making an app which has 2 navigation controllers. One has a tableView, and when a tap in the cells, I want to load the other viewController, but I always have this error:

fifthvieController may no respond to -navigationController2

Here's the code:

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {

                                                                  NSString *letraSeleccionada = [lista objectAtIndex:indexPath.row];
    FourthViewController *fourth = [[FourthViewController alloc]initWithNibName:@"FourthViewController" bundle:nil];
    fourth.letraSeleccionada = letraSeleccionada;

    [[self navigationController2] pushViewController:fourth animated:YES]; //here
    [fourth release];
    fourth = nil;   

}

i have changed the code an now it works but I don´t understand why before it doesn´t work. Here the new code:

      PruebaPushAppDelegate *delegate = [[UIApplication sharedApplication]delegate];

[delegate.navigationController2 pushViewController:fourth animated:YES];

//[[self navigationController2] pushViewController:fourth animated:YES];

Desdenova · Accepted Answer · 2011-05-28 03:34:55Z

1

Since you have using two navigation controllers, I'm guessing this is a tab bar application with two tabs and one nav control for each? And you used interface builder for this?

If thats the case you don't need to declare your navigation controllers because your view controllers are already inside them as first view controller.

Just try:

[[self navigationController] pushViewController:fourth animated:YES];

answered May 28, 2011 at 3:34

Desdenova

5,4088 gold badges41 silver badges48 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Evan Over a year ago

I´m not using IB only code. what do you think i was doing wrong?

Deepak Danduprolu Over a year ago

navigationController is a property of the UIViewController object which gives us the UINavigationController object it is part of. On the other hand navigationController2 is an instance variable within your main view controller class that is a reference to the same object.

Gary · Accepted Answer · 2011-05-28 01:42:22Z

0

Have you declared navigationController2 as a property? Looks like it is only a variable. You can only use "self" with it if you're using properties.

@property (nonatomic, retain) UINavigationController navigationController2;// in .h
@synthesize navigationController2; //in .m

answered May 28, 2011 at 1:42

Gary

4,1882 gold badges24 silver badges26 bronze badges

3 Comments

Evan Over a year ago

I did it in my AppDelegate.m. Do you have any more idea?

Gary Over a year ago

Since navigationController2 is not really a selector but a property, try using "." notation (self.navigationController2). If your synthesize is above where this function is being invoked then you won't receive any error otherwise you'll get an error instead of a warning. I'm guessing your function pasted above was also in AppDelegate.m

Hot Licks Over a year ago

Yeah, I don't think you have navigationController2 declared as a property of whatever class "self" is. (It could be something as simple as a misspelling, or you could have it declared in a different class and the current class does not inherit from the class where it's declared.)

Collectives™ on Stack Overflow

error with multiple navigationControllers

2 Answers 2

2 Comments

3 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

2 Comments

3 Comments

Your Answer

Sign up or log in

Post as a guest

Related