toggle UIButton-state when pressing, like a switch

Question

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


        

Answer 1

Try this way:

-(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 to @nadi-hassan for the Swift 3 tip.)