Display UIView behind SKScene in GameViewController - ios

Question

I have a basic SpriteKit game.
What I basically want to do is function create_new_ui() to create a UIView and to hide it behind the scene.
override func viewDidLoad()
{
super.viewDidLoad()
create_new_ui()
if let view = self.view as! SKView?
{
// Load the SKScene from 'GameScene.sks'
let scene = MainScene()
// Set the scale mode to scale to fit the window
scene.scaleMode = .resizeFill
scene.anchorPoint = CGPoint(x: 0.5, y: 0.5)
// Present the scene
view.presentScene(scene)
view.ignoresSiblingOrder = true
view.showsFPS = true
view.showsNodeCount = true
}
}
func create_new_ui()
{
let ui_view = UIView(frame: CGRect(x: 0, y: 0, width: 100, height: 100))
ui_view.center = CGPoint(x: self.view.frame.size.width / 2, y: self.view.frame.size.height / 2)
ui_view.backgroundColor = UIColor.red
self.view.addSubview(ui_view)
}
Can you tell me how can I move the ui_view behind the SKScene?
I tried sendSubviewToBack(_:) but had no effect. Any ideas?

Answer 1

There are several methods to do it. One way is directly adding it to the window after view did appear.:
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
addFakeView()
}
func addFakeView(){
let fview = UIView.init(frame: CGRect.init(x: 100, y: 400, width: 100, height: 100))
fview.backgroundColor = UIColor.green
view.window?.insertSubview(fview, at: 0)
}