How Can I convert NSMutableDictionary object into JSON format in Objective C

Question

I have a NSMutableDictionary object that returns data like as follows

Key : ClassObject

I want to convert that into a JSON format. For example

{
1:{id:1,name:'aa',class='1'}
}

I am using CJSONSerializer. But when I do

NSData *jsonData = [[CJSONSerializer serializer] serializeObject:dictionary error:&error];

It returning 'Nil'. Please suggest me how can I convert it into a JSON format.

Answer 1

You JSON structure is not valid. It should look like this:

{
    "1": {
        "id": "1",
        "name": "aa",
        "class": "1"
    }
}

To validate a JSON use this online tool.