how to set a context to NSString drawAtPoint?

问题

I currently working on encapsulation many [NSString drawAtPoint:withFont:] function calls to a method so that I could draw lots of strings by a single call, but how can I tell the method where to draw these strings?

What if I pass a CGContextRef to it, how to set a CGContextRef as current context?

回答1:

Maybe you need this part of code:

CGContextRef context = UIGraphicsGetCurrentContext();

回答2:

On iOS 4 and later, wrap the NSString drawAtPoint calls with UIGraphicsPushContext(context) and UIGraphicsPopContext().

See accepted answer for "Using NSStrings drawAtPoint method in place of CGContextShowGlyphsAtPoint..."

来源：https://stackoverflow.com/questions/7105506/how-to-set-a-context-to-nsstring-drawatpoint