Change the size of a UIView with autolayout programmatically

Autolayout size change

//_constraintHeight and _constraintWidht are IBOutlet NSLayoutConstraints (from _theView), defined in xib

_constraintHeight.constant = NEW_HEIGHT;
_constraintWidth.constant = NEW_WIDTH;
[_theView setNeedsUpdateConstraints];
    
[UIView animateWithDuration:((animated) ? ANIMATION_DURATION : 0.0) animations:^{
    [_theView layoutIfNeeded];
}];