CODEWITHSUNDEEP
iosobjective-cuiviewcontrolleruinavigationcontroller
HurkNburkS
HurkNburkS

Reputation: 5510

How to check current UIViewController on navigation stack

I am trying to figure out which UIViewController is currently on the top of the UINavigationController stack, I am passing these values over to my NSArray viewCtrls, when I log the top UIViewController I get this.

<SearchViewController: 0x1457c550>

So this is the code I am trying to use to figure out which UIViewController is at the top of the UINavigationStack

NSArray *viewCtrls = navcontroller.viewControllers;
UIViewController *vCtrl = [viewCtrls objectAtIndex:[viewCtrls count]-1];
            
NSLog(@"%@", vCtrl);
            
if ([vCtrl isKindOfClass:SearchViewController]) {
    NSLog(@"yes");
} else {
    NSLog(@"no");
}

However I am getting this error on the first line of the if statement.

Use of undeclared identifier 'SearchViewController'

I would like to know how I am supposed to declare the identifier? this is being called from a NSObjectClass, so I need to pass a parameter of self from the UIViewController that called this NSObjec class? or is there a better way of doing it?

Upvotes: 0

Views: 436

Answers (2)

Subzero
Subzero

Reputation: 961

Mike's solution should have worked all right. Apparently, it is not able to understand what SearchViewController is, really. Can you check putting a forward declaration

@class SearchViewController

for the SearchViewController class in the header file of the class where the above code is written, and then importing the SearchViewController.h file in the source file of the class where the above code is written.

#import "SearchViewController.h"

Upvotes: 1

Mike Gottlieb
Mike Gottlieb

Reputation: 966

You want [vCtrl isKindOfClass:[SearchViewController class]]

Upvotes: 2

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