reload table data in swift3 - json

Question

My screen consist of add and delete buttons, if I clicked add button then it opens popup screen and I entered fields and clicked on save button on the popup screen then data is added, if I close the popup screen then the table is not reloaded. please check my code as shown below.
class EditTest: UIViewController , UITableViewDataSource, UITableViewDelegate {
#IBOutlet weak var tableView: UITableView!
var position = [AnyObject]()
var company = [AnyObject]()
var location = [AnyObject]()
override func viewDidLoad() {
super.viewDidLoad()
loadJsonData()
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int
{
return position.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell
{
let cell = tableView.dequeueReusableCell(withIdentifier: "cell") as! customCell
cell.position.text = position[indexPath.row] as? String
cell.company.text = company[indexPath.row] as? String
cell.location.text = location[indexPath.row] as? String
return cell
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath){
PopupController
.create(self)
.customize(
[
.animation(.slideUp),
.scrollable(false),
.backgroundStyle(.blackFilter(alpha: 0.7))
]
)
.didShowHandler { popup in
print("showed popup!")
}
.didCloseHandler { _ in
print("closed popup!")
}
.show(DeleteRow.instance())
}
#IBAction func newExp(_ sender: Any) {
PopupController
.create(self)
.customize(
[
.animation(.slideUp),
.scrollable(false),
.backgroundStyle(.blackFilter(alpha: 0.7))
]
)
.didShowHandler { popup in
print("showed popup!")
}
.didCloseHandler { _ in
print("closed popup!")
}
.show(AddRow.instance())
}
func loadJsonData() {
let url = URL(string: "https://url..../id")
var request = URLRequest(url: url!, cachePolicy: .reloadIgnoringCacheData,timeoutInterval: 10000)
URLSession.shared.dataTask(with: request) { (data, response, error) in
if error != nil {
print(error!)
return
}
do {
if let jsonData = try JSONSerialization.jsonObject(with:data!, options: []) as? [[String:AnyObject]] {
print(jsonData)
for item in jsonData {
if let pos = item["Position"] as? AnyObject{
self.position.append(pos)
}
if let comp = item["Company"] as? AnyObject{
self.company.append(comp)
}
if let location = item["Location"] as? AnyObject{
self.location.append(location)
}
DispatchQueue.main.async {
self.tableView.reloadData()
}
}
}
} catch let error as NSError {
print(error)
}
}.resume()
}
}
In the above code, what changes I do to update table data when I close the popup.
func saveMethod(sender:UIButton){
let paramaters = ["Id": id,
"Position": pos,
"Company": com,
"Location": loc] as [String : Any]
let url = URL(string: “https://———/save”)!
let session = URLSession.shared
var request = URLRequest(url: url)
request.httpMethod = "POST" //set http method as POST
do {
request.httpBody = try JSONSerialization.data(withJSONObject: paramaters, options: .prettyPrinted) // pass dictionary to nsdata object and set it as request body
} catch let error {
print(error.localizedDescription)
}
request.addValue("application/json", forHTTPHeaderField: "Content-Type")
request.addValue("application/json", forHTTPHeaderField: "Accept")
//create dataTask using the session object to send data to the server
let task = session.dataTask(with: request as URLRequest, completionHandler: { data, response, error in
guard error == nil else {
return
}
guard let data = data else {
return
}
do {
//create json object from data
if let json = try JSONSerialization.jsonObject(with: data, options: .mutableContainers) as? [String: Any] {
DispatchQueue.main.async {
// now update UI on main thread
let alert = UIAlertController(title: “Row”, message: "Created Successfully", preferredStyle: .alert)
let OKAction = UIAlertAction(title: "OK", style: .default, handler: { _ -> Void in
DispatchQueue.main.async {
self.tableView.reloadData()
}
})
alert.addAction(OKAction)
self.present(alert, animated: true){}
}
}
} catch let error {
print(error.localizedDescription)
}
})
task.resume()
}