How to animate the drawing of a CGPath?

Question

I am wondering if there is a way to do this using Core Animation. Specifically, I am adding a sub-layer to a layer-backed custom NSView and setting its delegate to another custo

Answer 1

Sure—don't draw the line yourself. Add a 12-pixel-high sublayer with a flat background color, starting with a zero-width frame and animating out to your view's width. If you need the ends to be rounded, set the layer's cornerRadius to half its height.