How to set position and size of UIViewController in other UIViewController

Question

I am doing this to move a ViewController(viewController) to other ViewController(mainMenuViewController) :

    let storyboard = UIStoryboard(name: "Main", bundle: nil)
    let controller = storyboard.instantiateViewController(withIdentifier: "subView")
    addChildViewController(controller)
    view.addSubview(controller.view)
    controller.view.frame.size.width = 375
    controller.view.frame.size.height = 198
    controller.didMove(toParentViewController: self)

viewController get moved to mainMenuViewController but problem is that I can't see the the other items like tableView, button I have added to mainMenuViewController

Answer 1

Set frame instead of just height

controller.view.frame = CGRect(x: xPosition, y: y, width: width, height: height)

Also set autoreszingmaskToconstraint to false

controller.view.translatesAutoresizingMaskIntoConstraints = false;