Objective-C: how to group a series of string constants?

Question

I defined a series of string constants like below, in macro way,

#define EXT_RESULT_APPID  @\"appid\"
#define EXT_RESULT_ERROR_CODE  @\"errorcode\"
#define         


        

Answer 1

Create a header file say Constants.h

Add all constants in this file. These can be constants that you would like to use in deferent classes of your project.

#define EXT_RESULT_APPID  @"appid"
#define EXT_RESULT_ERROR_CODE  @"errorcode"
#define EXT_RESULT_PROGRESS  @"progress"

Now, instead of importing this Constants.h in every class, goto -Prefix.pch file and import the File here.

#import "SCConstants.h"

now you can use the Constants in any class of the project to your ease.