Comparing UIColor name

Question

I need to compare a color name. I have this code but it doesn't work =(

What should I do?

-(IBAction)buttonSelect:(id)sender {
  if ([sender color] == [UIColor redColor]) {
    // do something.
  }
}

Thanks!

Also, read up on pointers and pointer comparisons. If you previously programmed in Java or C#, for instance, `==` does not do what you think it does in Objective-C. — dandan78, Mar 03 '14 at 16:27
Do you want to compare the `UIColor` objects or the name of the colors? — Souljacker, Mar 03 '14 at 16:35

Simon McLoughlin · Accepted Answer · 2014-03-03T16:41:44.423

4

Try this:

if ([[sender titleColorForState:UIControlStateNormal] isEqual:[UIColor redColor]]) 
{
   // do something
}

This is how you compare objects in objective-c, as objects are pointers and you can't compare pointers with ==. I'd advise you to look into this

edited Mar 03 '14 at 16:41

answered Mar 03 '14 at 16:27

Simon McLoughlin

Sorry dont work i have this error --- '-[UIButton color]: unrecognized selector sent to instance 0x8a68800'-- – Fabio Mar 03 '14 at 16:35
The error is saying `sender` is a `UIButton`. – Souljacker Mar 03 '14 at 16:37
Are you trying to compare the `backgroundColor` of the button? If so, then it would be `[sender backgroundColor]`. – Souljacker Mar 03 '14 at 16:38
@Fabio ok thats the code you provided. What color are you trying to check? – Simon McLoughlin Mar 03 '14 at 16:39
Sorry i have an error this works!!! – Fabio Mar 03 '14 at 16:40
if ([[sender titleColorForState:UIControlStateNormal] isEqual:[UIColor redColor]]) – Fabio Mar 03 '14 at 16:40
@Fabio ok ill update the code for anyone else – Simon McLoughlin Mar 03 '14 at 16:41

score 1 · Answer 2 · edited Mar 03 '14 at 17:14

1

This works:

if ([[sender titleColorForState:UIControlStateNormal] isEqual:[UIColor redColor]])

edited Mar 03 '14 at 17:14

Bucket

answered Mar 03 '14 at 16:54

Fabio

2 Answers2