结构就像这样
标签栏控制器 - ＆gt;导航栏（项目） - ＆gt;视图控制器（右侧有一些按钮。
在视图控制器中，导航栏的属性从以下位置加载：
<canvas id="canvas" width=300 height=300></canvas>当我只使用导航栏时它工作正常，但现在导航栏正在被空白导航栏取代。导航栏上有两个按钮，当我运行代码时，它没有显示。我试图通过override func viewWillAppear(animated: Bool) {
currentUserId = PFUser.currentUser()!.objectId! as String
self.navigationController?.setToolbarHidden(true, animated: true)
if (isSegue == "CurrentUser")
{
UserId = PFUser.currentUser()!.objectId! as String
self.navigationItem.title = "My Album"
}
else
{
self.navigationItem.title = userName
self.navigationItem.rightBarButtonItems = nil
}
//added to make navigation bar black - Subodh
let nav = self.navigationController?.navigationBar
var image = UIImage(named: "xxxxxxx")
image = image?.imageWithRenderingMode(UIImageRenderingMode.AlwaysOriginal)
self.navigationItem.leftBarButtonItem = UIBarButtonItem(image: image, style: UIBarButtonItemStyle.Done, target: self, action: "leftBarButtonPressed")
nav?.barStyle = UIBarStyle.Black
nav?.tintColor = UIColor.whiteColor()
self.navigationController!.toolbar.barTintColor = UIColor.blackColor();
self.navigationController?.hidesBarsOnTap = false
self.tabBarController?.hidesBottomBarWhenPushed = true
self.collectionView.reloadData()
}
从标签视图控制器隐藏导航栏，但它不起作用。对于tabcontroller，我只能设置标题而不是其他东西。那我怎么办呢？
答案 0 :(得分：0)
通过在viewdidload中包含它来实现它：
self.tabBarController?.navigationController?.navigationBarHidden = true