Question

This is my action UIButton:

-(IBAction)favoriteButtonPressed:(id)sender
{
if (favoriteButtonSelected == 0) {

    [sender setSelected:YES];

    favoriteButtonSelected = 1;
    [sender setImage:[UIImage imageNamed:@"favoritedItem.png"]];
    [selectedObject setValue:@"Yes" forKey:@"Favorite"];

} else {

    [sender setSelected:NO];

    favoriteButtonSelected = 0;
    [sender setImage:[UIImage imageNamed:@"notFavorite.png"]];
    [selectedObject setValue:@"No" forKey:@"Favorite"];
}
}

How to make a reference to the button in viewDidLoad? To make the following code work:

- (void)viewDidLoad
{
[super viewDidLoad];

if ([[selectedObject valueForKey:@"Favorite"] isEqual:@"Yes"])  {

    [favoriteButton setImage:[UIImage imageNamed:@"favoritedItem.png"]];
    [favoriteButton setSelected:YES];
    favoriteButtonSelected = 1;

} else {

    [favoriteButton setImage:[UIImage imageNamed:@"notFavorite.png"]];
    [favoriteButton setSelected:NO];
    favoriteButtonSelected = 0;
}
}

EDIT FOR PROGRESS:

Now I did like this: Ctrl-drag from UIButton to ViewController in Assistant Editor. Connection: Outlet, name: favoriteButton, type: UIButton, storage: weak. But errors still there. + error for synthesize & error in viewDidUnload.. suggestion?

The Assistant Editor header for View Controller with the added property from Ctrl-drag:

@interface DetailViewController : UIViewController {
IBOutlet UIScrollView *viewScroller;
}

@property (nonatomic, strong) IBOutlet UILabel *mylLabel;

@property (nonatomic, strong) NSString *selectedObj;

@property (strong, nonatomic) NSArray *detailsDataSource;
@property int detailIndex;
@property (weak, nonatomic) IBOutlet UIButton *favoriteButton; //The added property

@end

Answer 1

Control drag from your button to the header of the viewcontroller to create a property. (You can do this while in assistant mode, second button on the top right)..

Then you can reference your button from wherever using that property