How to implement NSGraphicsContext in iphone.

Question

CGContextRef ctx;

NSGraphicsContext *nsGraphicsContext;

nsGraphicsContext = [NSGraphicsContext 
graphicsContextWithGraphicsPort:ctx flipped:NO];

[NSGraphicsContext saveGraphicsState];

[NSGraphicsContext setCurrentContext:nsGraphicsContext];

There is no NSGraphicsContext for iphone.

Thus CGContextRef context= UIGraphicsGetCurrentContext() ....do i use this?

Thanks in advance.