parsing NSJSONReadingAllowFragments

Question

I am receiving some json data in my app:

NSMutableDictionary *json = [NSJSONSerialization JSONObjectWithData:jsonResponse options:NSJSONReadingAllowFragments         


        

Answer 1

It seems that your server sends "nested JSON": jsonResponse is a JSON string (not a dictionary). The value of that string is again JSON data representing a dictionary.

In that case you have to de-serialize the JSON twice:

NSString *jsonString = [NSJSONSerialization JSONObjectWithData:jsonResponse options:NSJSONReadingAllowFragments error:nil];
NSData *innerJson = [jsonString dataUsingEncoding:NSUTF8StringEncoding];
NSDictionary *jsonDict = [NSJSONSerialization JSONObjectWithData:innerJson options:0 error:nil];

NSString *email = jsonDict[@"email"];