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

Try this:

if (tel == (NSString *)[NSNull null] || tel.length==0)
{
    // do logic here
}