条形按钮未出现在 PageViewController 中

Question

我正在学习 Swift。我尝试在 UIPageViewController 中添加一个按钮，但当我运行应用程序时它没有显示。它显示了默认的后退按钮。我尝试将它添加到 UIViewController 并且它起作用了。我已经在插入 BarButtonItem 之前添加了 navigational bar 但它仍然不会显示。为什么？如何将按钮添加到 UIPageViewController 的导航栏中？

预期的导航菜单 实际的导航菜单

Answer 1

如果你要推送到 pageviewcontroller 那么试试这个:-

 let myAttribute2 = [ NSForegroundColorAttributeName: UIColor.white 
 ,NSFontAttributeName: UIFont(name: kFontname, size: 20.0)]
    self.navigationController?.navigationBar.isTranslucent = false
    self.navigationController?.navigationBar.titleTextAttributes = myAttribute2
    self.navigationController?.isNavigationBarHidden = false
    self.navigationController?.navigationBar.barTintColor = kNavigationColor
    let img = UIImage(named: "menu-icon")
    let menuBtn = UIBarButtonItem(image: img, style: .plain, target: self, action: #selector(self.menuAction))
    self.navigationItem.leftBarButtonItem = menuBtn

条形按钮未出现在 PageViewController 中

Bar Button Doesn't Appear in PageViewController

swift

xcode

uinavigationcontroller

uinavigationbar

uipageviewcontroller