Wrong calculation of position

[RomanTruba]

Hello.
You have errors in positioning slider.
I mean that self.center returns center of view in superview, and you using it wrong. For center of view you should use this point:
CGPointMake(self.center.x, self.frame.size.height / 2);

Than you have trouble when thumbs liying on each other, then you cannot change value (for example, bring them both to right - you will unable to move)

[snikch]

Hi there,

Thanks for pointing this out. I was admittedly quite new at iOS when I first wrote it. Feel free to create a pull request to fix any positioning issues, it would be much appreciated!

Cheers