What's the difference between UIControlStateHighlighted and UIControlStateSelected?

Question

I am trying to set a state for UIButton.

But i don\'t know the difference between the UIControlStateHighlighted and UIControlStateSelected.

Answer 1

Highlighted is typically applied transiently when the control is being touched, selected is a more permanent state. Imagine a checkbox type button which dimmed while it was being touched - dimming is highlighted, ticked is selected, unticked is unselected.

Typically you'd never set highlighted status manually as the system will be setting/unsettling it in response to touches, whereas selected is safer. This particularly applies to buttons.