How to prevent subview go out of superview while rotating and resizing

Question

I'am going to rotate and resize a view(UIImageView) so that it doesn't go out of supverview. So I wrote following.

    //rotating and resizing process

    //testing subview is in superview
    CGRect rect = subview.bounds;
    CGRect converted_rect = [subview convertRect:rect toView:subview.superview];
    if(!CGRectContainsRect(subview.superview.frame, converted_rect))
    { 
        //restore proccess
    }

But my code can't prevent going out of superview area.

Answer 1

If you're using storyboard, check the box "clip subviews" in the superview's attribute inspector. If not, UIView has a property called clipToBounds that you can set to YES. Both do the same thing, choose whether to use the storyboard or programmatic method based on your project.