Swift Json data parsing without array

Question

I have working json data parsing array codes but I want to change it to Dictionary parsing. My new json file

{
  "Id": 450,
  "Name": "NameforItem",
  "Image": "234234.jpg"
}

My old json file working success

[{
  "Id": 450,
  "Name": "NameforItem",
  "Image": "234234.jpg"
}]

My parsing codes.

 /// Convert JSON data into  array
    private func getFromJSON(jsonData: NSData) throws -> [Place] {
        var places = [Place]()
        do {
            if let jsonArray = try NSJSONSerialization.JSONObjectWithData(jsonData, options: .AllowFragments) as? [[String: AnyObject]] {
                for i in jsonArray {
                    var properties = [String: AnyObject]()
                    properties[placeJSONKeys.Id] = i[placeJSONKeys.Id]
                    properties[placeJSONKeys.Name] = i[placeJSONKeys.Name]
                    let place = Place(properties: properties)
                    places.append(place)
                }
            }
        } catch {
            throw TMDBErrors.ParsingError
        }
        return places
    }

Thank you !

Anbu.Karthik · Accepted Answer · 2016-08-08 13:15:00Z

2

I suggest you to change return type of your function to Optional:

private func getFromJSON(jsonData: NSData) throws -> Place? {
    var place: Place?
    do {
        if let json = try NSJSONSerialization.JSONObjectWithData(jsonData, options: .AllowFragments) as? [String: AnyObject] {
            var properties = [String: AnyObject]()
            properties[placeJSONKeys.Id] = json[placeJSONKeys.Id]
            properties[placeJSONKeys.Name] = json[placeJSONKeys.Name]
            place = Place(properties: properties)
        }
    } catch {
        throw TMDBErrors.ParsingError
    }
    return place
}

updated

 private func getFromJSON(jsonData: NSData) throws -> Place? {
    var place: Place?
    do {
        if let json = try NSJSONSerialization.JSONObjectWithData(jsonData, options: .AllowFragments) as? [String: AnyObject] {


            place = Place(properties: json)
        }
    } catch {
        throw TMDBErrors.ParsingError
    }
    return place
}

edited Aug 8, 2016 at 13:15

Anbu.Karthik

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answered Aug 8, 2016 at 13:05

Yury

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6 Comments

SwiftDeveloper Over a year ago

@Shadow Of Worked Ty I will approve it soon

Anbu.Karthik Over a year ago

@SwiftDeveloper - one question , check one the updated answer also

SwiftDeveloper Over a year ago

@Anbu.Karthik Thank you

Anbu.Karthik Over a year ago

@SwiftDeveloper - the reason placeJSONKeys is the struct class , you can directly access the objcet in anywhere

SwiftDeveloper Over a year ago

@Anbu.Karthik yeah i understand Thank you !

|

Nirav D · Accepted Answer · 2016-08-08 13:09:24Z

1

Change your [[String: AnyObject]] with [String: AnyObject] because now it is dictionary not array

do {
    if let jsonDic = try NSJSONSerialization.JSONObjectWithData(jsonData, options: .AllowFragments) as? [String: AnyObject] {
        print(jsonDic["Id"])
        print(jsonDic["Name"])
        print(jsonDic["Image"])
    }
} catch {
    throw TMDBErrors.ParsingError
}

edited Aug 8, 2016 at 13:09

answered Aug 8, 2016 at 13:03

Nirav D

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1 Comment

Anbu.Karthik Over a year ago

why you are increase the memory you can directly access the JSonarray dictionary no need of loop in here bro

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