CODEWITHSUNDEEP
objective-cxcodewarnings
Matt Williamson
Matt Williamson

Reputation: 40203

Xcode: Get rid of forward class warning

In Xcode, I have a forward class declared so as to avoid a circular import e.g.

@class MyClass;

And then I do a method call on that class e.g.

[MyClass myMethod];

But I get a forward class warning e.g.

warning: receiver 'MyClass' is a forward class and corresponding @interface may not exist

How can I hide those across my whole project?

Upvotes: 5

Views: 2876

Answers (2)

James Eichele
James Eichele

Reputation: 119154

My answer to a similar question may be of use here.

The basic concept is this:

use @class in header files, and then use #import in the .m files.

Upvotes: 3

Darren
Darren

Reputation: 25619

You use forward class declarations in your header file to prevent circular imports.

You must still import the MyClass header in your .m file. The circular import problem doesn't exist with .m files.

Upvotes: 24

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