importing/including UIImage/UIGraphics into Objective C

Question

Im trying to get my head around Objective C and struggling fast. Im guessing what I am asking here is fairly rudimentary, but I cant seem to find the answers to my problems anywhere on StackOverflow, the Mac Developer Library or the internet in general.

Im trying to use the code from here: http://snipplr.com/view/23024/ to import an Image and display it.

UIGraphicsBeginImageContext

and

[img drawInRect:...]

are kicking up errors, namely "Unknown name type UIImage" and "No visible @interface for 'UIImage' declares the selector 'drawInRect'"

Looking here I can find that drawInRect is a method of UIImage. Im guessing my problem is that the UIImage class cannot be found in my code.

So Im trying to include it, or import it - and Im just drawing a blank here - these lines of code dont work:

#import "UIImage"
#import "UIImage.h"
#include "UIImage"
#include "UIImage.h"

They kick out "file not found" errors. I have no idea how to locate these files, Im sure I am missing something really fundamental and simple, but cant find anything online that sheds any light on how to stop UIImage from being an "Unknown name type".

Can anyone help?

Answer 1

If your on a mac your going to want NSImage instead.

If you are on iphone make sure your prefix.pch includes #import <UIKit/UIKit.h>