Segueing to a different tab in a UITabController - ios

Question

I am trying to segue data from my "create a party" form into my second "Find Parties" tab.
Here is a screen shot of my main story board:
my code for the create a party controller:
import UIKit
struct party {
var name: String
var location: String
var description: String
}
class FirstViewController: UIViewController {
#IBOutlet weak var nameField: UITextField!
#IBOutlet weak var locationField: UITextField!
#IBOutlet weak var descriptionField: UITextView!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
var newParty = party(name: "", location: "", description: "")
#IBAction func create(_ sender: AnyObject) {
newParty = party(name: nameField.text!, location: locationField.text!, description: descriptionField.text!)
nameField.text = ""
locationField.text = ""
descriptionField.text = ""
performSegue(withIdentifier: "toPartyList", sender: newParty)
}
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
let destinationViewController : SecondViewController = segue.destination as! SecondViewController
destinationViewController.parties.append(newParty)
}
}
Code for the find parties tab:
import UIKit
class SecondViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {
#IBOutlet weak var partyTable: UITableView!
override func viewDidLoad() {
super.viewDidLoad()
partyTable.delegate = self
partyTable.dataSource = self
// updates the table of users everytime submit is clicked
DispatchQueue.main.async{
self.partyTable.reloadData()
}
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
var parties = [party]()
// creates the number of cells in the table
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return parties.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
// Make table cells the show the user name
let cell = UITableViewCell()
cell.textLabel?.text = parties[indexPath.row].name
return cell
}
// Allows the user to swipe and delete people from the table and also the users array
func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) {
if editingStyle == .delete {
// delete the person in users array
parties.remove(at: indexPath.row)
// delete the cell from the table
partyTable.deleteRows(at: [indexPath], with: .fade)
}
}
}
currently my segue just takes me directly to the "Find Parties" view controller with no way back, and not to the tab. what do I need to change in my segue to do this?

Answer 1

Rather than use a segue in this case, just switch tabs programatically:
#IBAction func create(_ sender: AnyObject) {
newParty = party(name: nameField.text!, location: locationField.text!, description: descriptionField.text!)
nameField.text = ""
locationField.text = ""
descriptionField.text = ""
tabBarController?.selectedIndex = 1 // 2nd tab
}
To pass information along, you can do something like this:
let navVC = tabBarController.viewControllers[1] as! UINavigationController
let rootVC = navVC.viewControllers[0] as! SomeViewController
rootVC.someData = myData