How to access the first set of array? SwiftyJSON

Question

I had problem with SwiftyJSON and I don't really understand their documentation.

I did

let jsonArray = JSON(jsonData)

let json = jsonArray["Data"]

(edit)How do i get all the the "names" by using loop(just the names not what is inside the names)? like I want to print out every set one by one.

{ "Data": { "Jenn": { "Id": "21227", "DOB": "1/1/1989" }, 
            "Kenny": { "Id": "20909", "DOB": "1/10/1989" }, 
            "Lisa": { "Id": "28223", "DOB": "11/1/1980" }, 
            "John": { "Id": "29462", "DOB": "2/7/1991" }, 
            "Emma": { "Id": "3744", "DOB": "10/7/2000" }, 
            "David": { "Id": "3748", "DOB": "4/9/1980" }, 
            "Tim": { "Id": "1182", "DOB": "5/5/1999" }, 
            "Joan": { "Id": "7605", "DOB": "6/12/1995" }, 
            "Jack": { "Id": "3808", "DOB": "3/20/1990" } 
           } 
 }

I'm sorry if it looks confusing. Thank you!!

as I'm getting your json format is not correct. Before parsing the json data please verify the json format on jsonviewer.stack.hu if you are successfully able to format the jsondata over jsonviewer than it can easily parsed. — Pramod Kumar
– Pramod Kumar, Commented Jul 27, 2018 at 4:48
Hi, thanks for point it out. just added the missing brackets. — 14079_Z
– 14079_Z, Commented Jul 28, 2018 at 5:08

vadian · Accepted Answer · 2018-07-28 07:07:20Z

0

First of all the root object is a dictionary, not an array, please note the braces ({}).

The names are dictionary keys in the dictionary for key Data

do {
    let jsonDictionary = try JSON(data: data)
    if let data = jsonDictionary["Data"].dictionary {
        let names = data.keys
        for name in names {
            print(name)
        }
    }
} catch {
    print(error)
}

answered Jul 28, 2018 at 7:07

vadian

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Comments

itsapple · Accepted Answer · 2018-07-27 03:49:31Z

0

json is not a Array but a Dictionary. So you should use json["Emma"].

answered Jul 27, 2018 at 3:49

itsapple

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1 Comment

14079_Z Over a year ago

Hi, thank you for answering. I think the way I ask was incorrect. After I did json = jsonArray["Data"] it just print the entire thing. And so far i can only get the first dict by json["Data"].first. How do I get the second dict in the json? what if the json contains 100+ of array of dicts? how do i get all of it by using loops?

selton · Accepted Answer · 2018-07-27 04:02:37Z

0

json is Dic, you can use it like this:

//using key to get sub data
let dic = json["Emma"]
//get keys array
let names = json.keys;
if let firstname = names.first{
    print(firstname)
}

answered Jul 27, 2018 at 4:02

selton

774 bronze badges

1 Comment

14079_Z Over a year ago

Hi, thank you for answering. I think the way I ask was incorrect. After I did json = jsonArray["Data"] it just print the entire thing. And so far i can only get the first dict by json["Data"].first. How do I get the second dict in the json? what if the json contains 100+ of array of dicts? how do i get all of it by using loops? I'm sorry it sounds really confusing I'm trying my best to explain what I was asking :/

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