How to disable the highlight control state of a UIButton?
This will work for you:
[button setBackgroundImage:[UIImage imageNamed:@"button_image"] forState:UIControlStateNormal];
[button setBackgroundImage:[UIImage imageNamed:@"button_image_selected"] forState:UIControlStateSelected];
[button setBackgroundImage:[UIImage imageNamed:@"button_image_selected"] forState:UIControlStateSelected | UIControlStateHighlighted];
3rd line is the trick here...
This works the same for setting image/backgroundImage
Your button must have its buttonType
set to Custom.
In IB you can uncheck "Highlight adjusts image".
Programmatically you can use theButton.adjustsImageWhenHighlighted = NO;
Similar options are available for the "disabled" state as well.
adjustsImageWhenHighlighted = NO;
In addition to above answer of unchecking "highlight adjusts image" in IB, make sure that button type is set CUSTOM.