Whats Wrong With My Code? (Presenting Modal View)

I'm trying to have a modal view controller that i call programmatically.


heres my code:

Code:

- (IBAction)searchView:(id)sender
{
    GlobalStrings* theDataObject = [self theGlobalClass];
  
    if (theDataObject.presentSearch == nil)
    {  
        UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil];
        UIViewController *vc = [storyboard instantiateViewControllerWithIdentifier:@"SearchBarViewController"];
        [vc setModalPresentationStyle:UIModalPresentationFullScreen];
      
        [self presentModalViewController:vc animated:YES];
    }
  
    UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil];
    UIViewController *vc = [storyboard instantiateViewControllerWithIdentifier:@"SearchBarViewController"];
    [vc setModalPresentationStyle:UIModalPresentationFullScreen];
}

i get a sigbart error, is it because the view controller I'm calling is a navigation controller?


i also have a similar method in my "ViewWillAppear" for my log in screen.

 

yea i just realized once i flag it, i won't be able to call it again till i exit/terminate the app

I'm initially trying to make a lil search engine for this guys database through web service.


the textfield is where the model number of the item (thats in the data base) is either typed in or scanned in (by linea pro sleeve)

so its an essential part of my app, so basically i wanted to modally call a tableview from the textfield and than when u search it'll show a list of search results, and whatever u select will push the model number to the textfield in the "root view controller" that'll send the model number to the web service and return data.


and if there is only one result, push it automatically to the textfield (in the root view) and automatically exit the searchtableview


is there a better way?