post data and get data from json url in swift? - ios

Question

I tried the below code for post and get data from json, in struck in getting data from json
http://beta.json-generator.com/api/json/get/EJoC6gB_z
[
{
"UserRole": "User",
"UserName": "Trinadh Reddy",
"Id": 15,
"Email": "trinadhvidavaluru#gmail.com"
},
{
"UserRole": "User",
"UserName": "fayaz sk",
"Id": 16,
"Email": "fayaz.net717#gmail.com"
},
{
"UserRole": "NewUser",
"UserName": "Gowtham M",
"Id": 17,
"Email": "mgowtham666#gmail.com"
},
{
"UserRole": "User",
"UserName": "fayaz sk",
"Id": 18,
"Email": "fayaz8484#gmail.com"
},
{
"UserRole": "NewUser",
"UserName": null,
"Id": 19,
"Email": null
},
{
"UserRole": "User",
"UserName": null,
"Id": 20,
"Email": null
},
{
"UserRole": "NewUser",
"UserName": "Fayaz Shaik",
"Id": 21,
"Email": "fayaz717#gmail.com"
},
{
"UserRole": "NewUser",
"UserName": "Trinadh Reddy",
"Id": 22,
"Email": "trinadh.engineer#gmail.com"
},
{
"UserRole": "NewUser",
"UserName": "tarun gandham",
"Id": 23,
"Email": "gandham.tarun#gmail.com"
},
{
"UserRole": "NewUser",
"UserName": null,
"Id": 24,
"Email": "admin#gmail.com"
},
{
"UserRole": "NewUser",
"UserName": "John",
"Id": 25,
"Email": "john#gmail.com"
},
{
"UserRole": "NewUser",
"UserName": "venkatesh kakumani",
"Id": 26,
"Email": "veenkys01#gmail.com"
}
]
code:
let givenName = user.profile.name
let email = user.profile.email
let param=["UserName":givenName!,"Email":email!] as Dictionary<String,String>
let request = NSMutableURLRequest(url: NSURL(string:"http://sstarapiservice.azurewebsites.net/api/users/")! as URL)
let session = URLSession.shared
request.httpMethod = "POST"
request.addValue("application/json", forHTTPHeaderField: "Content-Type")
request.addValue("application/json", forHTTPHeaderField: "Accept")
request.httpBody = try! JSONSerialization.data(withJSONObject: param, options: [])
let task = session.dataTask(with: request as URLRequest) { data, response, error in
guard data != nil else {
print("no data found: \(error)")
return
}
do {
if let json = try JSONSerialization.jsonObject(with: data!, options: []) as? NSDictionary {
print("Response: \(json)")
if var role = json["UserRole"] as AnyObject? as! String?
{
print("assigned Role= \(role)")
if role == "User"{
print("App permissions approved")
let myStoryBoard:UIStoryboard = UIStoryboard(name:"Main",bundle:nil)
let page=myStoryBoard.instantiateViewController(withIdentifier: "HomeViewController") as! HomeViewController
let pageNav = UINavigationController(rootViewController:page)
let appDelegate:AppDelegate = UIApplication.shared.delegate as! AppDelegate
appDelegate.window?.rootViewController=pageNav
self.window?.rootViewController=pageNav
//self.window?.rootViewController = page
}
else{
print("wait for Approval...")
let myStoryBoard:UIStoryboard = UIStoryboard(name:"Main",bundle:nil)
let page=myStoryBoard.instantiateViewController(withIdentifier: "ApprovalUser") as! HomeViewController
let pageNav = UINavigationController(rootViewController:page)
let appDelegate:AppDelegate = UIApplication.shared.delegate as! AppDelegate
appDelegate.window?.rootViewController=pageNav
self.window?.rootViewController=pageNav
// let myStoryBoard:UIStoryboard = UIStoryboard(name:"Main",bundle:nil)
// let page=myStoryBoard.instantiateViewController(withIdentifier: "HomeViewController") as! HomeViewController
// let pageNav = UINavigationController(rootViewController:page)
// let appDelegate:AppDelegate = UIApplication.shared.delegate as! AppDelegate
// appDelegate.window?.rootViewController=pageNav
// self.window?.rootViewController=pageNav
//self.window?.rootViewController = page
}
}
//
}
else {
var jsonStr = " "
var jsonDictionary = [String: Any]()
jsonStr = NSString(data: data!, encoding: String.Encoding.utf8.rawValue) as! String
print("Error could not parse JSON: \(jsonStr)")
print("121")
if var role = jsonStr as String?{
print("role= \(role)")
}
var role = JSONDict["UserRole"] as AnyObject? as! String?
print("success = \(role)")
// if var role = jsonDictionary["UserRole"] as! String?
// {
// print("role is:\(role)")
// }
let myStoryBoard:UIStoryboard = UIStoryboard(name:"Main",bundle:nil)
let page=myStoryBoard.instantiateViewController(withIdentifier: "HomeViewController") as! HomeViewController
let pageNav = UINavigationController(rootViewController:page)
let appDelegate:AppDelegate = UIApplication.shared.delegate as! AppDelegate
appDelegate.window?.rootViewController=pageNav
self.window?.rootViewController=pageNav
}
} catch let parseError {
print(parseError)// Log the error thrown by `JSONObjectWithData`
let jsonStr = NSString(data: data!, encoding: String.Encoding.utf8.rawValue)
print("Error could not parse JSON: '\(jsonStr)'")
print("12")
}
}
task.resume()

Answer 1

Request JSON data from Webservice APi in Swift 3
Here i have added two types of Methods by Using Alamofire or URLSession : -
import UIKit
import Alamofire
class ViewController: UIViewController {
let urlString = "http://beta.json-generator.com/api/json/get/EJoC6gB_z"
override func viewDidLoad() {
super.viewDidLoad()
// Choose only one function here for calling webservice
getValueofUser()
//Or
getuserDetails()
}
//MARK: - By Using Alamofire
func getValueofUser(){
Alamofire.request(urlString, method: .get)
.responseJSON { response in
print("Success: \(response.result.isSuccess)")
switch response.result {
case .success:
self.successGetTermsData(response: response.result.value! as Any)
case .failure(let error):
print(error)
}
}
}
//MARK: - Or Use URLSession methods
func getuserDetails(){
let url = URL(string: urlString)
URLSession.shared.dataTask(with:url!) { (data, response, error) in
if error != nil {
print(error ?? "")
} else {
do {
let response = try JSONSerialization.jsonObject(with: data!, options: [])
self.successGetTermsData(response: response)
} catch let error as NSError {
print(error)
}
}
}.resume()
}
func successGetTermsData(response: Any){
let arrayOfDetails = response as? [[String: Any]] ?? []
// Do Something with the Array
//Here you will be get Array of User Related Details
let email = arrayOfDetails[0]["Email"] as? String ?? ""
let username = arrayOfDetails[0]["UserName"] as? String ?? ""
let Id = arrayOfDetails[0]["Id"] as? Int ?? 0
let UserRole = arrayOfDetails[0]["UserRole"] as? String ?? ""
print("Email ID -" ,email, "User Name -", username, "ID -",Id, "UserRole -", UserRole)
}
}
OutPut : -
Email ID - trinadhvidavaluru#gmail.com User Name - Trinadh Reddy ID - 15 UserRole - User