问题
I've a custom shape drawing using coregraphics and i want to add a drop shadow and a gradient to it also. I've been trying and searching a lot of informations on how to combine and do this, but i can't get it to work. I'm able to draw only one either. Anyone doing this already or know how to do this? Thank you.
回答1:
Quartz only applies shadows to fills and strokes. Drawing a gradient does not count as a fill.
Fill with a solid color (to draw the shadow), then draw the gradient in the same area.
来源：https://stackoverflow.com/questions/2577622/how-to-draw-a-drop-shadow-and-gradient-with-quartz2d