Question

Is there any checkbox control in the object library for iOS applications? The nearest thing I see is the switch control, which can take a boolean value.

Answer 1

You can use the selected state of a UIButton, set different images (or also texts) for differents (via code, or Interface Builder) :

[button setImage:[UIImage imageNamed:@"selected.png"]
        forState:UIControlStateSelected];
[button setImage:[UIImage imageNamed:@"unselected.png"]
        forState:UIControlStateNormal];

And in the touch up inside action :

- (IBAction)buttonTouched:(id)sender
{
    button.selected = !button.selected;
    // add other logic
}