如何防止imageView在ContainerView中的導航欄下延伸

請幫忙解決這個問題。我有一個viewcontroller與兩個容器視圖，每個指向一個單獨的視圖控制器。如何防止imageView在ContainerView中的導航欄下延伸

第一個viewcontroller應該顯示一個圖像，但頂部被導航欄截斷。

我沒有選中「延伸到頂部邊緣」。

我的兩個容器視圖的viewcontrollers幾乎是空的。

任何想法？

class ViewController: UIViewController { 

var teamMember:TeamMember! 

override func viewDidLoad() { 
    super.viewDidLoad() 

    if let name = teamMember.firstName { 
     title = name 
    } 
    navigationController?.view.setNeedsLayout() 
} 


override func prepare(for segue: UIStoryboardSegue, sender: Any?) { 
    if (segue.identifier == "PictureViewController") { 
     var destination = segue.destination as? UINavigationController 
     var vc = destination?.topViewController as? PictureViewController 
     vc?.teamMember = teamMember 
    } 

    if (segue.identifier == "BioContentViewController") { 
     var vc = segue.destination as? BioContentViewController 
     vc?.teamMember = teamMember 
    } 
}

編輯：我還設置自定義導航欄的項目，我不知道如果這會引起一個問題

override func prepare(for segue: UIStoryboardSegue, sender: Any?) { 
    if (segue.identifier == "PictureViewController") { 

     let backItem = UIBarButtonItem() 
     backItem.title = "Meet The Team" 
     navigationItem.backBarButtonItem = backItem 
    } 

    override func prepare(for segue: UIStoryboardSegue, sender: Any?) { 
    if (segue.identifier == "teamMemberDetailView") { 

     let backItem = UIBarButtonItem() 
     backItem.title = "Meet The Team" 
     navigationItem.backBarButtonItem = backItem 

     var vc = segue.destination as? TeamMemberDetailViewController 
     vc?.teamMember = teamArray[selectedTeamMemberIndex] 
    } 
}