Can a UIAlertView pass a string and an int through a delegate

Question

I have a UIAlertView (several, in fact), and I\'m using the method -(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex to trigger

Answer 1

Probably the quickest way to associate an object with an arbitrary other object is to use objc_setAssociatedObject. To use it correctly, you need an arbitrary void * to use as a key; the usual way to do that is to declare a static char fooKey globally in your .m file and use &fooKey as the key.

objc_setAssociatedObject(alertView, &secretStringKey, mySecretString, OBJC_ASSOCIATION_RETAIN);
objc_setAssociatedObject(alertView, &intKey, [NSNumber numberWithInt:myInt], OBJC_ASSOCIATION_RETAIN);

Then use objc_getAssociatedObject to retrieve the objects later.

NSString *mySecretString = objc_getAssociatedObject(alertView, &secretStringKey);
int myInt = [objc_getAssociatedObject(alertView, &intKey) intValue];

Using OBJC_ASSOCIATION_RETAIN, the values will be retained while attached to the alertView and then automatically released when alertView is deallocated.