How to get the graphics context of an UIView?
Question
For example, I want to draw something directly to an UIView. I need an CGContextRef, but I don't want to make a new one since that would eat up too much memory. Can I obtain the CGContextRef from an UIView?
2 answers
solution1
5 2010-11-22 02:24:27
仅在 drawRect 方法中：
UIGraphicsGetCurrentContext()
solution2
1 ACCPTED 2010-03-30 08:20:24
Outside of the redraw call, I do not believe so. I remember trying this myself a while ago. Sorry I can't be more specific, but I've not touched the iPhone SDK in months.
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