Multiple child viewControllers in single container view - ios

Question

I am newbie with Swift and I have to manage multiple child view controllers in one UIContainerView with storyboard layout but, container view only provide one child view at once.
I have already used below code:
let storyboard = UIStoryboard(name: "Main", bundle: nil)
var controller: UIViewController = storyboard.instantiateViewControllerWithIdentifier("HomeVC") as UIViewController
self.containerViewA.addSubview(controller.view)
self.addChildViewController(controller)

Answer 1

In ios at a container view only connect with one child controller "at a time" , instead of child view controller we can take one UINavigationController with its RootviewControlle, We can load multiple child view controller using multiple UINavigationController as mentioned below.
var navController1 = UINavigationController()
var navController2 = UINavigationController()
var navController3 = UINavigationController()
var navController4 = UINavigationController()
override func viewDidLoad()
{
super.viewDidLoad()
//navController1
let VC1 = self.storyboard!.instantiateViewControllerWithIdentifier("HomeVC") as! HomeVC
navController1 = UINavigationController(rootViewController: VC1)
navController1.navigationBarHidden = true
//navController2
let VC2 = self.storyboard!.instantiateViewControllerWithIdentifier("RoomControlesVC") as! RoomControlesVC
navController2 = UINavigationController(rootViewController: VC2)
navController2.navigationBarHidden = true
//navController3
let VC3 = self.storyboard!.instantiateViewControllerWithIdentifier("TelevisionVC") as! TelevisionVC
navController3 = UINavigationController(rootViewController: VC3)
navController3.navigationBarHidden = true
//navController4
let VC4 = self.storyboard!.instantiateViewControllerWithIdentifier("EntertainmentVC") as! EntertainmentVC
navController4 = UINavigationController(rootViewController: VC4)
navController4.navigationBarHidden = true
let btn = UIButton()
btn.tag = 1
self.ActionOnSideMenuButtons(btn)
}
#IBAction func ActionOnSideMenuButtons(sender: AnyObject)
{
for view in containerViewA.subviews{
view.removeFromSuperview()
}
switch sender.tag
{
case 1:// Home
NSLog("Home Button tapped")
addChildViewController(self.navController1)
self.navController1.view.frame = self.containerViewA.bounds
self.containerViewA.addSubview(navController1.view)
break
case 2:// Room Controles
NSLog(" Room Controles Button tapped")
self.navController2.view.frame = self.containerViewA.bounds
self.containerViewA.addSubview(navController2.view)
break
case 3:// Television
NSLog("Television Button tapped")
self.navController3.view.frame = self.containerViewA.bounds
self.containerViewA.addSubview(navController3.view)
break
case 4:// Entertainment
NSLog("Entertainment Button tapped")
self.navController4.view.frame = self.containerViewA.bounds
self.containerViewA.addSubview(navController4.view)
break
default:
break
}
}
In above code i have created 4 navigation controllers and initialise them in viewDidLoad method & on "ActionOnSideMenuButtons" method i have load childview controller whenever any of side menu button tapped.