Is it a good practice to setNeedsLayout/setNeedsDisplay from CALayer's methods?

Question

My layer has a couple of dynamic properties that affect layout and/or display of the layer itself. Is it okay if I send setNeedsLayout/setNeedsDisplay from the setters of the properties or the caller of the setter is responsible for that?

Answer 1

It's fine to call setNeedsLayout or setNeedsDisplay from the setters inside your UIView subclass. They return immediately and call layoutSubviews only once in the next drawing cycle.