How to make a CALayer and all the things inside it semi-transparent? That includes all the things drawn with CoreGraphics and CoreText.
layer.opacity = 0.5
views:
43answers:
2Heh, I started reinventing the wheel O.o. Thanks!
Nick Brooks
2010-07-25 21:06:06
That doesn't apply to CoreGraphics elements
Nick Brooks
2010-07-25 21:10:25
It should apply to everything in the layer. Can you provide more detail as to what you're doing?
jtbandes
2010-07-25 21:11:53
Drawing filled rectangles with CoreGraphics. They stay opaque.
Nick Brooks
2010-07-25 21:14:43
Where are you drawing them?
jtbandes
2010-07-25 23:59:49
On a sublayer...
Nick Brooks
2010-07-29 09:18:27
This should work, then.
jtbandes
2010-07-29 14:31:42
A:
Depending on your application, one thing to keep in mind apart from jtbandes answer, is going to be performance. Transparency on the iDevice platforms is not a fast operation, so doing too much of it can be a bad thing. Please keep this in mind.
jer
2010-07-25 21:09:39