Receive warning on iPhone: NSString may not respond to '-JSONValue'

Question

In my iPhone application, I am accessing a web server to retrieve data.

Here I use JSON to retrieve data from a database.

I get a warning saying:

NSString may not respond to '-JSONValue'

How to solve it?

Answer 1

Add this #import "JSON.h" at the top of your .m or .h file.

Answer 2

You tried to add the JSON Library to your project and import it

 #import "JSON/JSON.h" 

Answer 3

You probably just skip the inclusion of JSON in your library.