Pass data between ViewController and TabBarController

Question

I have couple of questions. How to pass the data (which i got after the Alamofire request is finished), to one of children of TabBarController?

The first problem i have

Answer 1

You could do something like this from the TabController class (parent):

var maleVC: MaleOptionsViewController! //First child 
var femaleVC: FemaleOptionsViewController! //Second child

override func viewDidLoad() {
    super.viewDidLoad()
    maleVC = self.viewControllers![0] as? MaleOptionsViewController //Reference to first child
    femaleVC = self.viewControllers![1] as? FemaleOptionsViewController //Reference to second child
}

And pass it data like this:

override func tabBar(_ tabBar: UITabBar, didSelect item: UITabBarItem) {
        maleVC.cartTableView?.reloadData() //Where cartTableView is an IBOutlet or even a variable for that matter
        femaleVC.cartTableView?.reloadData() //Same thing as the comment ^
}