Add Tab Bar Programmatically to ViewController - ios

Question

I have a TabBarController in my Main.storyboard file.
In my Upload.storyboard I am presenting a ViewController from the Main.storyboard file, however, it doesn't contain the tab bar.
The viewProfile button should go to a tab called Sharks and within that present a view controller based on data gathered in the Upload.storyboard (modal view).
Can I add the tab bar programmatically or am I not properly presenting the correct VC?
// MARK: - Actions
#IBAction func viewProfileButtonPressed(_ sender: UIButton) {
let stb = UIStoryboard(name: "Main", bundle: nil)
let sharkProfile = stb.instantiateViewController(withIdentifier: "sharkProfile") as! SharkProfileTableViewController
self.present(sharkProfile, animated: true) {
// add tab bar here?
}
}

Answer 1

What you need to do is present the tab bar view controller, not the view controller that is embedded in it

Answer 2

One method is to create a Delegate Protocol to allow a tap on View Profile button to "call back" to the View Controller that presented it. When that callback is received, the VC sets the "current" tab.
It will look something like this:
// define "call back" delegate protocol
protocol EncounterUploadedDelegate : class {
func didTapSharkProfileButton()
}
The Encounter view controller will need to conform to that protocol:
class EncounterViewController: UIViewController, EncounterUploadedDelegate {
// the normal stuff for this VC and all the other code for it
// ...
// conform to the protocol
func didTapSharkProfileButton() -> Void {
// when we get this call-back, switch to the Shark Profile tab
// tabs are zero-based, so assuming "SharkProfile" is
// is the 4th tab...
self.tabBarController?.selectedIndex = 3
}
// assuming a "Show Modal" segue named "ShowEncounterUploadSegue" is used
// to present the Modal View
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "ShowEncounterUploadSegue" {
let vc = segue.destination as! TabModalVC
vc.encounterDelegate = self
}
}
}
The view controller to be presented as modal:
class TabModalVC: UIViewController {
weak var encounterDelegate: EncounterUploadedDelegate?
#IBAction func profileButtonTapped(_ sender: Any) {
// dismiss self (the modal view)
self.dismiss(animated: true, completion: nil)
// this will call back to the delegate, if one has been assigned
encounterDelegate?.didTapSharkProfileButton()
}
}
Hope that all makes sense :)