CODEWITHSUNDEEP
objective-cxcodemacosclassnsimage
hockeyman
hockeyman

Reputation: 1183

NSImage initWithData not found?

In NSImage class reference it is said that there exist method initWithData, but why xCode says it doesn't exist?

I use it like this:

    NSData *imgData = [[imageView image] TIFFRepresentation];
fotoImg = [NSImage initWithData:imgData];

And i get warning: 

Class method '+initWithData:' not found (return type defaults to 'id')

Why is this happening?

Upvotes: 0

Views: 1501

Answers (1)

Michel Müller
Michel Müller

Reputation: 5705

You are calling initWithData on the class when you should call it on an instance of that class. Do this: [[NSImage alloc] initWithData:imgData];

It is very important to learn the difference between member functions and class functions (or in Obj C terms "messages"). I recommend http://www.amazon.de/Programming-Objective-C-Automatic-Reference-Developers/dp/0321811909/ref=pd_sim_sbs_eb_1/276-1733140-9413556.

Upvotes: 4

Related Questions