How to instantiate a viewController that is not in storyboard - ios

Question

Im currently using a custom tabBarController to navigate to my apps. I'm using storyboard for some of the view controllers and others Im not. the problem is that the viewControllers that are not in story are not being re instantiate. When I navigate to the view the first time everything work fine. If I exit and then come back the same view does not refresh. the same data is re-added on top of the old data. this happen to the views I could not add using an identifier to. The one i did self.storyboard?.instantiateViewController(withIdentifier: "LoginViewController") as! LoginViewController work fine. How can I solve this. Thank you in advance.
this work fine: this view behave normally because it was instantiate
let dashboardController = self.storyboard?.instantiateViewController(withIdentifier: "DashboardViewController") as! DashboardViewController
let dashboardTabImg = UIImage.fontAwesomeIconWithName(.User, textColor: iconColor, size: iconSize )
let dashboardTabImgSelected = UIImage.fontAwesomeIconWithName(.User, textColor: iconColor, size: iconSize)
dashboardController.tabBarItem = UITabBarItem(title: "Login", image: dashboardTabImg, selectedImage: dashboardTabImgSelected )
// this does not work properly because it was not instantiate.
//receivePostRequest VC
let receivePostRequest = UINavigationController(rootViewController: ReceivePostRequestViewController())
let receivePostRequestImg = UIImage.fontAwesomeIconWithName(.Dollar, textColor: iconColor, size: iconSize )
let receivePostRequestImgSelected = UIImage.fontAwesomeIconWithName(.Dollar, textColor: iconColor, size: iconSize)
receivePostRequest.tabBarItem = UITabBarItem(title: "Request", image: receivePostRequestImg, selectedImage: receivePostRequestImgSelected )
//This is the viewController that is im having issues with
import UIKit
import Firebase
class ReceivePostRequestViewController: UIViewController {
let receiveRequestSwitch = UISwitch()
let receiveRequestLabel = UILabel()
override func viewWillAppear(_ animated: Bool) {
navigationItem.title = "Post Request"
receiveRequestSwitch.isOn = false
checkFirBaseForSwitchStatus()
}
override func viewDidLoad() {
super.viewDidLoad()
view.backgroundColor = .white
pageSetup()
receiveRequestSwitch.addTarget(self, action: #selector(postRequestSwitchButtonPressed), for: .touchUpInside)
}
}
enum receivePostStatusEnums{
case pending
case accepted
case disabled
case declined
case contactCustomerSupport
case error
}
extension ReceivePostRequestViewController {
func pageSetup(){
receiveRequestLabel.text = "Receive Post Request"
receiveRequestLabel.isUserInteractionEnabled = true
receiveRequestLabel.translatesAutoresizingMaskIntoConstraints = false
view.addSubview(receiveRequestLabel)
receiveRequestLabel.topAnchor.constraint(equalTo: view.topAnchor, constant: 80).isActive = true
receiveRequestLabel.leftAnchor.constraint(equalTo: view.leftAnchor, constant: 26).isActive = true
receiveRequestLabel.rightAnchor.constraint(equalTo: view.rightAnchor, constant: -26).isActive = true
receiveRequestLabel.heightAnchor.constraint(equalToConstant: 44).isActive = true
receiveRequestLabel.addSubview(receiveRequestSwitch)
receiveRequestSwitch.frame = CGRect(x: 0, y: 0, width: 40, height: 44)
receiveRequestSwitch.translatesAutoresizingMaskIntoConstraints = false
// receiveRequestSwitch.leftAnchor.constraint(equalTo: receiveRequestLabel.leftAnchor).isActive = true
receiveRequestSwitch.rightAnchor.constraint(equalTo: receiveRequestLabel.rightAnchor).isActive = true
receiveRequestSwitch.centerYAnchor.constraint(equalTo: receiveRequestLabel.centerYAnchor).isActive = true
}
func checkFirBaseForSwitchStatus(){
FIRDatabase().childRef(refUrl: "frontEnd/users/\((FIRAuth.auth()?.currentUser?.uid)!)/receivePostRequest/info").observe(.value, with: {snapshot in
if let dict = snapshot.value as? NSDictionary {
if let stat = dict["isAvailabileForRequest"] as? Bool {
if stat{
self.receiveRequestSwitch.isOn = true
}else{
self.receiveRequestSwitch.isOn = false
}
}
}else{
self.receiveRequestSwitch.isOn = false
}
})
}
func postRequestSwitchButtonPressed(){
if self.receiveRequestSwitch.isOn{
receiveRequestSwitch.isOn = false
let userId = FIRAuth.auth()?.currentUser?.uid
FIRDatabase.database().reference().child("frontEnd/users/\(userId!)/receivePostRequest/application").observeSingleEvent(of: .value, with: {snapshot in
if let dict = snapshot.value as? [String:AnyObject]{
if let status = dict["status"] as? String {
print(status)
switch status {
case "pending":
print("its pending")
self.simpleAlert(title: nil, message: "Your application is currently Being Reviewed, no action is required from you")
case "accepted":
print("its accepted")
let viewController:UIViewController = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "PostSelectViewController")
self.present(viewController, animated: true, completion: nil)
case "disabled":
print("its disabled")
self.simpleAlert(title: nil, message: "Your account is currently disabled if you have any questions please contact customer service")
case "declined":
self.simpleAlert(title: nil, message: "After reviewing your application we will not be able to continue your application we are very sorry. If you feel this was an error please contact our customer service")
case "contactCustomerSupport":
print("its contactCustomerSupport")
self.simpleAlert(title: nil, message: "Please contact customer")
case "error":
print("its error")
self.simpleAlert(title: nil, message: "We can not process your request please try again at a later time")
default:
print ("error")
self.simpleAlert(title: nil, message: "We can not process your request please try again at a later time")
}
}
return
}
//user need submit application here
print("user need to fill out application page")
let applicationNavController = UINavigationController(rootViewController:ReceivePostRequestApplicationViewController())
self.present(applicationNavController, animated: true, completion: nil)
})
}else{
//update info to turn switch off
FIRDatabase().childRef(refUrl: "frontEnd/users/\((FIRAuth.auth()?.currentUser?.uid)!)/receivePostRequest/info").updateChildValues(["isAvailabileForRequest":false], withCompletionBlock: { (error, fir) in
if error != nil {
print(error?.localizedDescription)
return
}
let ac = UIAlertController(title: nil, message: "You will no longer receive service request", preferredStyle: .alert)
let okAction = UIAlertAction(title: "Ok", style: .default, handler: { (okAction) in
self.dismiss(animated: true, completion: nil)
})
ac.addAction(okAction)
self.present(ac, animated: true, completion: nil
)
})
}
}
}