How to parse this JSON from swift 3 facebook graph request - ios

Question

I am using a graph request to get a json using this code:
nextrequest.start({ (response: HTTPURLResponse?, result: Any?) in
print(result)
})
this is the json result below and I have no idea how to access the the data inside such as gender, id and name...
Optional(FacebookCore.GraphRequestResult<FacebookCore.GraphRequest>.success(FacebookCore.GraphResponse(rawResponse: Optional({
gender = male;
id = 1128614937219535;
name = "Rayan Slim";
picture = {
data = {
height = 320;
"is_silhouette" = 0;
url = "https://scontent.xx.fbcdn.net/v/t1.0-1/p320x320/12541113_961418627272501_5451131278168499090_n.jpg?oh=47433bc236ce63ce1c07b92499087f29&oe=586A406A";
width = 320;
};
};
}))))
any help would be greatly appreciated!!!!

Answer 1

After permission has been granted here's the function that works.
if AccessToken.current != nil {
GraphRequest(graphPath: "me", parameters: ["fields": "id, name, first_name, last_name, picture.type(large), email"]).start({ (urlResponse, requestResult) in
switch requestResult {
case .Success(let response):
if let responseDictionary = response.dictionaryValue {
let email = responseDictionary["email"] as? String
print(email)
let first = responseDictionary["name"] as? String
print(first)
if let picture = responseDictionary["picture"] as? NSDictionary {
if let data = picture["data"] as? NSDictionary{
if let profilePicture = data["url"] as? String {
print(profilePicture)
}
}
}
}
case .Failed(let error):
print(error)
}
})
}

Answer 2

This is tested and working in Swift 3, using the Facebook SDK for Swift
let pictureRequest = GraphRequest(graphPath: "me/picture?type=large&redirect=false", parameters: [:])
pictureRequest.start{
(urlResponse, requestResult) in
switch requestResult {
case .failed(let error):
print("error in graph request:", error)
break
case .success(let graphResponse):
if let responseDictionary = graphResponse.dictionaryValue {
print(responseDictionary)
var dict: NSDictionary!
dict = responseDictionary["data"] as! NSDictionary
print(dict)
print(dict["url"])
}
}
}

Answer 3

if let userDataDict = result as? NSDictionary {
self.first_name = userDataDict["first_name"] as? String
self.id = userDataDict["id"] as? String
self.last_name = userDataDict["last_name"] as? String
let pictDict = userDataDict["picture"] as? NSDictionary
let pictureUrl = pictDict?["data"] as? NSDictionary
self.pictureUrl = pictureUrl?["url"] as? String
}

Answer 4

do like
nextrequest.start({ (response: HTTPURLResponse?, result: Any?) in
print(result)
if let userData = result as? [NSObject: Any]
{
if let name = userData["name"] as? String
{
print(name)
}
if let picture = userData["picture"] as? [NSObject: Any] {
if let data = picture["data"] as? [NSObject: Any] {
if let profilePictureURL = data["url"] as? String {
// Now add the data to the UI elements
print (profilePictureURL)
}
}
}
}
})

Answer 5

Make use of some JSON parser, maybe Unbox that makes it easier to handle JSON. This code is not tested, but it is an outline of how you could do it. It is always code to store data in a struct instead of using dictionaries.
typealias JSON = [String: Any]
protocol Model {
init?(json: JSON)
}
func getDataFromFacebook() {
...
nextrequest.start {
(response: HTTPURLResponse?, result: Any?) in
self.handleFacebookResult(result)
}
}
func handleFacebookResult(_ result: Any?) {
guard
let json = result as? JSON,
let person = Person(json: json)
else { return }
//do something with person! :)
}
struct Person: Model {
let name: String
let gender: String
let picture: Picture
init?(json: JSON) {
guard
let name = json["name"] as? String,
let gender = json["gender"] as? String,
let pictureJson = json["picture.data"] as? JSON, // "picture.data" possible when using 'Unbox'
let picture = Picture(json: pictureJson)
else { return nil }
self.name = name
self.gender = gender
self.picture = picture
}
}
struct Picture: Model {
let height: Int // Or maybe float...?
let width: Int // Or maybe float...?
let url: String
init?(json: JSON) {
guard
let height = json["height"] as? Int,
let width = json["width"] as? Int,
let url = json["url"] as? String
else { return nil }
self.height = height
self.width = width
self.url
}
}