CustomNavigator.kt

/**
 * Stack to keep track of the number of navigation transactions
 */
private var navigationStack = Stack<ViewNavigation>()

/**
 * Method to emulate navigation
 * @param viewNavigation a view navigation object that contains the current view
 *                       and the view you intend to navigate to.
 */
private fun navigate(viewNavigation: ViewNavigation) {
    
    // You can apply any view transitions or animations here
    
    viewNavigation.from.visibility = View.GONE  // outgoing view
    viewNavigation.to.visibility = View.VISIBLE  // incoming view
}