Parsing JSON data from alamofire into Array with Dictionary - json

Question

I'm trying to parse JSON data from alamorefire as follows.
import UIKit
import Alamofire
import SwiftyJSON
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
Alamofire.request(.GET, "https://api.mynexttrainschedule.net/")
.responseJSON { response in
guard let object = response.result.value else {
print("Oh, no!!!")
return
}
let json = JSON(object);print(json)
let schedule = json[0]["schedule"]
}
}
}
If I print json, I have a data structure like the following (stated concisely).
[
{
"schedule" : [
{"departureTime" : "05:09", "destination" : "Boston", "trainType" : "Express"},
{"departureTime" : "05:19", "destination" : "Portland", "trainType" : "Rapid"},
{"departureTime" : "05:29", "destination" : "Boston", "trainType" : "Express""}
],
"station" : "Grand Central",
"direction" : "North"
},
{
"schedule" : [
{"departureTime" : "05:11","destination" : "Washington, "trainType" : "Express""},
{"departureTime" : "05:23","destination" : "Baltimore, "trainType" : "Express""},
{"departureTime" : "05:35","destination" : "Richmond, "trainType" : "Local""}
],
"station" : "Grand Central",
"direction" : "South"
}
]
Now, how can I save the schedule array with a dictionary (departureTime, destination...) through or not through SwiftyJSON?
Thanks.
UPDATE
The following is my own solution.
import Alamofire
import SwiftyJSON
class ViewController: UIViewController {
var scheduleArray = [Dictionary<String,String>]()
override func viewDidLoad() {
super.viewDidLoad()
Alamofire.request(.GET, "https://api.mynexttrainschedule.net/")
.responseJSON { response in
guard let object = response.result.value else {
print("Oh, no!!!")
return
}
let json = JSON(object)
if let jArray = json.array {
if let westHolidayArray = jArray[0]["schedule"].array {
for train in westHolidayArray {
if let time = train["departureTime"].string,
let dest = train["destination"].string,
let type = train["trainType"].string {
let dict = ["time":time, "dest":dest, "type": type]
self.scheduleArray.append(d)
}
}
}
}
}
}
}

Answer 1

First of all you should create a class that is your model of Schedule like this
class Schedule: NSObject {
var departureTime: String
var destination: String
var trainType: String
init(jsonDic : NSDictionary) {
self.departureTime = jsonDic["departureTime"] != nil ? jsonDic["departureTime"] as! String! : nil
self.destination = jsonDic["destination"] != nil ? jsonDic["destination"] as! String! : nil
self.trainType = jsonDic["trainType"] != nil ? jsonDic["trainType"] as! String : nil
}
}
And in your view controller your going to need an array of the Schedule object and after you could parse your Json you do it like this:
class ScheduleController: UIViewController {
// The two object use to show the spinner loading
var loadingView: UIView = UIView()
var spinner = UIActivityIndicatorView(activityIndicatorStyle: .whiteLarge)
// Array of your objects
var arrSchedule: [Schedule] = []
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
self.getInfoSchedule()
}
func getInfoSchedule() {
showActivityIndicator()
Alamofire.request("https://api.mynexttrainschedule.net/", method: .get, parameters: nil, encoding: URLEncoding.default, headers: nil).responseJSON {
response in
self.hideActivityIndicator()
switch response.result {
case .success:
if let objJson = response.result.value as! NSArray? {
for element in objJson {
let data = element as! NSDictionary
if let arraySchedule = data["schedule"] as! NSArray? {
for objSchedule in arraySchedule {
self.arrSchedule.append(Schedule(jsonDic: objSchedule as! NSDictionary))
}
}
}
}
case .failure(let error):
print("Error: \(error)")
}
}
}
//Those two method serves to show a spinner when the request is in execution
func showActivityIndicator() {
DispatchQueue.main.async {
self.loadingView = UIView()
self.loadingView.frame = CGRect(x: 0.0, y: 0.0, width: self.view.frame.width, height: self.view.frame.height)
self.loadingView.center = self.view.center
self.loadingView.backgroundColor = UIColor(rgba: "#111111")
self.loadingView.alpha = 0.9
self.loadingView.clipsToBounds = true
self.spinner = UIActivityIndicatorView(activityIndicatorStyle: .whiteLarge)
self.spinner.frame = CGRect(x: 0.0, y: 0.0, width: 80.0, height: 80.0)
self.spinner.center = CGPoint(x:self.loadingView.bounds.size.width / 2, y:self.loadingView.bounds.size.height / 2)
self.loadingView.addSubview(self.spinner)
self.view.addSubview(self.loadingView)
self.spinner.startAnimating()
}
}
func hideActivityIndicator() {
DispatchQueue.main.async {
self.spinner.stopAnimating()
self.loadingView.removeFromSuperview()
}
}
}
Maybe is not the more efficient way to do it, but it worked for me. I'm using swift3 with xcode 8.1.
Hope it helps !

Answer 2

Basically what you have is an array of schedules. You can map it using ObjectMapper. Install its pod and just create a new Swift file. and Write this
import ObjectMapper
class TrainSchedules: Mappable {
var mySchedules: [Schedules]
required init?(_ map: Map) {
mySchedules = []
}
func mapping(map: Map) {
mySchedules <- map["schedule"]
}
}
class Schedules: Mappable {
var departureTime: String
var destination: String
var trainType: String
required init?(_ map: Map) {
departureTime = ""
destination = ""
trainType = ""
}
func mapping(map: Map) {
departureTime <- map["departureTime"]
destination <- map["destination"]
trainType <- map["trainType"]
}
}
Now you can use it like
if let data = Mapper<TrainSchedules>().map(json){
// now data is an array containt=g all the schedules
// access departureTimelike below
print(data[0].departureTime)
}
I hope it helps, Letme know if you find any difficulty.

Answer 3

Alamofire.request("YOUR_URL", method:.post, parameters:params, encoding:URLEncoding.default, headers: nil).responseJSON { response in
switch(response.result)
{
case .success(_):
if response.result.value != nil
{
let dict :NSDictionary = response.result.value! as! NSDictionary
print(dict)
let status = dict.value(forKey: "status")as! String
print(status)
if(status=="1")
{
self.array_placeRequestId=((dict.value(forKeyPath: "result.request_id") as! NSArray).mutableCopy() as! NSMutableArray)
}
else
{
print("Something Missed")
}
}
break
case .failure(_):
print(response.result.error)
break
}
}