Toggle the state of a UIButton when pressed, like a toggle

Question

-(void)setState:(id)sender { UIButton* button = (UIButton*)sender; BOOL buttonBool = ([button state]==selected : YES ? NO); [sender setSelected:buttonBool++]; } 

This is my idea, but I cannot determine the actual state of the button that calls the function. any button that calls this function must be switched between the standard and selected states, so that it works like a switch. I just need to have my own background graphics, otherwise I used a switch.

So can someone fix my idea?

Answer 1

Try as follows:

 -(void)setState:(id)sender { UIButton* button = (UIButton*)sender; button.selected = !button.selected; } 

Answer 2

Swift 3 way:

 func setState(button: UIButton) { button.isSelected = !button.isSelected } 

(Thanks @ nadi-hassan for Swift 3's hint).