I want to display a view controller inside a view controller. I'm using popup segue to do this. Second view controllers settings are like below and but It shows in fullscreen anyway.
 func tappedView3() {
    // get a reference to the view controller for the popover
    let popController = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "popoverId")
    // set the presentation style
    popController.modalPresentationStyle = UIModalPresentationStyle.popover
    // set up the popover presentation controller
    popController.popoverPresentationController?.permittedArrowDirections = UIPopoverArrowDirection.up
    popController.popoverPresentationController?.delegate = self
    popController.popoverPresentationController?.sourceView = m_tumgun // button
    popController.popoverPresentationController?.sourceRect = m_tumgun.bounds
    // present the popover
    self.present(popController, animated: true, completion: nil)
}
// UIPopoverPresentationControllerDelegate method
func adaptivePresentationStyleForPresentationController(controller: UIPresentationController) -> UIModalPresentationStyle {
    // Force popover style
    return UIModalPresentationStyle.none
}


