addSubview SwiftUI View to UIKit UIView in Swift

Step 1:
Create instances of UIHostingController by using SwiftUI View

struct ContentView : View {
    var body: some View {
        VStack {
            Text("Test")
            Text("Test2")

        }
    }
}

var child = UIHostingController(rootView: ContentView())

Step 2:
Add instance of UIHostingController as a child view controller to Any UIKit ViewController

var parent = UIViewController()
child.view.translatesAutoresizingMaskIntoConstraints = false
child.view.frame = parent.view.bounds
// First, add the view of the child to the view of the parent
parent.view.addSubview(child.view)
// Then, add the child to the parent
parent.addChild(child)

You can use the following code to remove a child controller
Remove from view Controller

// Then, remove the child from its parent
child.removeFromParent()

// Finally, remove the child’s view from the parent’s
child.view.removeFromSuperview()