I am using a search bar plus controller for a UITableview in my MasterController. When the view shows up, the navigationbar in the MasterController is black until the view fully loads (not sure why?). In order to fix this I set the self.navigationController.navigationBar.translucent = false; This fixed the issue I was having with the navigation bar being black initially, but now it looks like when I click a cell in the uitableview of the MasterController, the content in the DetailView that loads shifts down approximately the size of the search bar, but it's just blank space above the content that has been shifted... When I remove the translucent property in the MasterController the content in the DetailView is fine and not shifted...
SO my question is, what is shifting this content down and how can I stop the content from being shifted AND having an opaque navigation bar...
In iOS 7, by default your view controller's view extends under a translucent navigation bar when contained in a UINavigationController but not on an opaque one. You could set the extendedLayoutIncludesOpaqueBars property of the view controller if you want it to extend under opaque nav bars too.
When you say your scroll view is shifted on your detail view controller it's probably because its y origin is not set to zero to offset for your view extending under a translucent nav bar, but because your nav bar is now opaque and your view is not extending under it the space is now visible.
One thing more view controllers will actually automatically add insets on scroll views they contain so that their contents are not obscured when the view controllers view extends under navigation bars. It is set by the automaticallyAdjustsScrollViewInsets property which is by default is set to YES.
Related
I am trying to implement a horizontal scrolling table view. I was able to accomplish this with the following layout. I have a ScrollView which contains a Container View which points to my NavigationController. Since I made the Container View wider than the ScrollView, the table is able to scroll left to right as expected.
The problem I am having is resizing the Navigation Bar's width as I do not want to have to scroll to view the Navigation Bar's title. I tried explicitly setting the width property of the Navigation Bar in ViewDidAppear however it keeps getting resized to the actual width of the table view. Is there any way I can do this without having to create my own custom view that mimics that Navigation Bar?
I ended up creating my own navigation bar that is placed on top of the actual integrated table view navigation bar.
I have created a storyboard layout which contains UIViewControllers within UINavigationControllers which all connect back to a UITabBarController. There is a login page which is not connected to anything (just a UIViewController) which segues into the UITabBarController when the app detects user authentication. You can see what this looks like in the following image:
When I set the translucent property of the Navigation Bar to "false" or "No", the view y origin gets pushed down to the bottom of the Navigation Bar (which is the behavior that I am looking for). However, when I set the translucent property of the Tab Bar to "false" or "No", the Tab Bar DOES become opaque, but the view is not resized to fit between the top and bottom bars. I have unchecked the Extend Edges property for both Under Top Bars and Under Bottom Bars for all UIViewControllers, UINavigationControllers, and the UITabBarController.
When I add subviews programmatically (no auto-layout), the UIViewController's view is still the height of the entire screen, and is only pushed down from the top bar, but not pushed up from the bottom bar. While creating this question, this is the result I got on the simulator (subviews are not even starting below the Navigation Bar):
The layout that I'm trying to achieve is to have the view fit between the Navigation Bar and the Tab Bar so that both bars are opaque and no content goes underneath them. Any ideas or suggestions?
EDIT:
After eliminating individual Navigation Controllers and adding a single one before the TabBar Controller, I'm getting weird behavior including navigation items disappearing and one of my subviews still goes under bottom bar.
EDIT 2:
After doing some research, It seems that having navigation controllers inside each tab is a normal view hierarchy. Unfortunately, I still have not figured out how to limit a view controller's view to be between a navigation bar and a tab bar. Any suggestions?
I've got a gradient background that I want to show through both the navigation bar and the tab bar. I have them set to "translucent black". If I create a ViewController and put a TableView on it, this works perfectly. However, I can't get it to work properly with a TableViewController. The tab bar works fine, but the navigation bar ends up black. If I turn off "Adjust Scroll View Insets", then the navigation bar looks the way I want it, but the top half of the first table view row gets cut off (see examples). The gradient is on the background view. The background colour of the tableview is clear.
Is there any way to get the same effect on a TableViewController? Do I need to somehow make the heading or first row of the tableview be the background that goes under the nav bar?
ViewController with TableView added:
TableViewController with "Adjust Scroll View Insets" ON:
TableViewController with "Adjust Scroll View Insets" OFF:
After doing a test I think you'd need:
Adjusts Scroll View Insets ON
Extend Edges - Under Top Bars ON
No. 1 allow the UITableView to cover the entire screen (including under the navigation bar) and No. 2 adds a space at the top of the UITableView content so that the content is not hidden under the navigation bar.
I ran into a similar issue trying to set a full screen background on a static table view controller with a clear navigation bar. I solved it by using a backgroundView on my tableView instead of setting backgroundColor. For example:
myTableView.backgroundView = UIImageView(image: UIImage(named: "backgroundImg.png"))
I set my navigation bar to clear, but you could style that however you like:
navigationController?.navigationBar.backgroundColor = UIColor.clear
I also had to set Extend Edges - Under Top Bars ON
I have created an application which needs to have a bar above the navigation bar and other views. To accomplish this, I am using a view controller with a view for the top bar, and then a container view for everything else. Sometimes, the top bar needs to be hidden. I'm using autolayout to hide the top bar (set its height to 0), and the container view expands to fill the screen (container top equal to the top bar bottom). The container view contains a navigation controller because I need a navigation bar below the top bar sometimes. When I start the app, this all works fine as shown below:
As you can see, the navigation bar stays the desired height, which is expanded to include the status bar
However, when the top bar is tapped, I use a segue to present (not push) a view controller from my root view controller (not the container), and then I look at the same screen with the navigation bar, the navigation bar is no longer extended and it overlaps the status bar as seen below:
Why would presenting a view controller break this? And then how could I rectify this or prevent it?
One possible solution I could do is present a view controller from within the container view, that works, I would just have to set the current view controller in the container to a delegate of the root controller, so that when the top bar is tapped, it tells the view controller in the container to present the new view controller. This would not be my first option however, especially if there are other scenarios which cause this problem.
Thanks for any help!
You need to turn automaticallyAdjustsScrollViewInsets off for all of your child view controllers and manage the insets (or setup so they aren't required) yourself. By default automaticallyAdjustsScrollViewInsets is on for all view controllers (which is what you want for 'full screen' presented VCs.
At the moment you see controllers almost randomly updating to reorganise themselves for the scroll insets as the VC hierarchy changes.
I'd probably turn automaticallyAdjustsScrollViewInsets off for all VCs (apart from root) and change your header view so that it's full height or status bar height (which should be the length of the topLayoutGuide of the root VC). When collapsed to status bar height your header view could also change colour to match that of the current top VC.
I had an UIPageViewController embedded in a NavigationController embedded an TabBarController.
I supposed every child view of the UIPageViewController fits the size within the UITabBarViewController.
The first child view looks fine:
Switch to the next (vertically), it's view suddenly resizes and the view length expands over the bottom bar:
Actually it's not under the bottom bar but clipped to that size (which means if you pull up the view you still cannot see the whole but the cut text).
I did unchecked every related view controller's Under Bottom Bar & Adjust Scroll View Inset but nothing works.
Any suggestion would be appreciated.
Try this in table view controller viewDidLoad() method.
self.extendedLayoutIncludesOpaqueBars = NO;
OR
you can set property in Interface Builder:
Uncheck Extend Edges: Under Bottom Bars, Under Opaque Bars.