How to pass a string as a tag of UIButton

Question

The tag value is an Integer:

UIButton *button=[UIButton buttonWithType:UIButtonTypeCustom];
[button setTitle:addressField forState:UIControlStateNormal];
[bu         


        

Answer 1

You can do that as bellow with the help of feature objc_runtime

#import 

static char kButtonAssociatedKey;

NSString *aStrKey = [NSString stringWithFormat:@"Any Key"];
UIButton *button=[UIButton buttonWithType:UIButtonTypeCustom];
[button setTitle:addressField forState:UIControlStateNormal];
[button addTarget:self action:@selector(pickTheQuiz:) forControlEvents:UIControlEventTouchUpInside];
button.tag=1;

objc_setAssociatedObject(button,
                         &kButtonAssociatedKey,
                         aStrKey,
                         OBJC_ASSOCIATION_RETAIN_NONATOMIC);

-(void)pickTheQuiz:(id)sender
{
    NSString *aStrKey = objc_getAssociatedObject(sender, &kButtonAssociatedKey);
    objc_removeAssociatedObjects(sender);
    NSLog(@"%@", aStrKey);
}