Checking a null value in Objective-C that has been returned from a JSON string

Question

I have a JSON object that is coming from a webserver.

The log is something like this:

{          
   \"status\":\"success\",
   \"Us         


        

Answer 1

The best answer is what Aaron Hayman has commented below the accepted answer:

if ([tel isKindOfClass:[NSNull class]])

It doesn't produce a warning :)