touch event on a quartz circle drawing?

Question

Hi, I have drawn a circle on the iphone simulator using quartz 2d with fill. Is there a way by which I can detect a touch event on that circle?

Thanks Harikant Jammi

Answer 1

I haven't tested it, but if the surrounding space around the circle is set to an alpha of 0, then maybe only the circle would accept touches. You'd probably have to turn off isOpaque for the view, and have no background color.

If that doesn't work, then you'll have to process the tap location and write code to see if it is within the circle area or not.

Answer 2

Just put a custom invisible button with 0.0 alpha on that circle, so the button will always be able to detect touch.