IOS Complex JSON Structure Parsing

Question

I Want to parse complex JSON structure JSON is given Below USING IOS.

What lib should i use, or any other lib`s custom available

{
     "firstName": "John",
     "lastName": "Smith",
     "age": 25,
     "address":
     {
         "streetAddress": "21 2nd Street",
         "city": "New York",
         "state": "NY",
         "postalCode": "10021"
     },
     "phoneNumber":
     [
         {
           "type": "home",
           "number": "212 555-1234"
         },
         {
           "type": "fax",
           "number": "646 555-4567"
         }
     ]
 }

This is what I use in some of my objc projects. github.com/EasyMapping/EasyMapping — MadNik
– MadNik, Commented Dec 5, 2015 at 6:17
if any1 have code for this this plz share ? .. code i used not working .... — user5633758
– user5633758, Commented Dec 6, 2015 at 7:20

dgatwood · Accepted Answer · 2015-12-05 07:12:58Z

1

Read the JSON data into an NSData object, and use NSJSONSerialization's JSONObjectWithData:options:error: method. The result will be an NSDictionary containing NSString, NSDictionary, and NSArray objects.

So for example:

NSData *data = [NSData dataWithContentsOfURL:[NSURL URLWithString:@"file:///myfile.txt"]]; // Probably get this from somewhere else, but you get the idea.

NSError *error = nil;
id topObject = [NSJSONSerialization JSONObjectWithData:data options:0 error: &error];

if ([topObject isKindOfClass:[NSDictionary class]] && !error) {
    ...
}

edited Dec 5, 2015 at 7:12

answered Dec 5, 2015 at 6:30

dgatwood

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2 Comments

dgatwood Over a year ago

Not sure how I could give a useful example of that. It's a single method that takes an NSData object containing the JSON data, pass 0 for options, and pass a reference to an NSError *error = nil; to get the error back.

dgatwood Over a year ago

Okay, minimal example, but the only really interesting bit is going to be getting the data into the NSData object to begin with, which is entirely dependent on what you're doing. :-)

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