Question

I was wondering how I could access data from another class using Xcode 4.2 and Storyboard?
Say for instance how would I access the text of a text field from another class?
Google hasn’t helped and the lesson on MyCodeTeacher.com about this is outdated and doesn’t work anymore…

Thanks for bearing with me!

-Shredder2794

Answer 1

Not sure if this is the only or best way, but you can create a property in the destination view’s .h file and set it to a value before the segue is performed

in the destination view controller’s .h file:

@interface YourDestinationViewController : UIViewController
{
    NSString* _stringToDisplay;
    //...
}
    @property (nonatomic, retain) NSString* stringToDisplay;        
    //...

and in the presenting view’s .m file

-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    YourDestinationViewController*viewController = segue.destinationViewController;
    viewController.delegate = self;
    viewController.stringToDisplay = @"this is the string";
}

Then you can do what you want with the property in whichever of the viewWillAppear/viewDidLoad/viewDidAppear/etc. methods best suits your purpose in the destination view’s .m file

And then to check if it works, in the destination view controller’s .m file:

-(void)viewWillAppear:(BOOL)animated
{
    NSLog(@"self.stringToDisplay = %@", self.stringToDisplay);
    ...
    //and if a label was defined as a property already you could set the 
    //label.text value here
}

Edit: Added more code, and made it less generic