I am working with TabBarController application and my requirement is to add a TabBar at the top of the window rather than default bottom. Can somebody help to add the TabBar at the top of the window while using UITabbarController rather than simple tabbar.
I think that is not permitted when using UITabBarController. From the official docs, about tabBar property:
"You should never attempt to manipulate the UITabBar object itself stored in this property. If you attempt to do so, the tab bar view throws an exception. To configure the items for your tab bar interface, you should instead assign one or more custom view controllers to the viewControllers property. The tab bar collects the needed tab bar items from the view controllers you specify.".
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I have the first storyboard has UINavigationController its continues to the second storyboard but it doesn't appear there only when running the app.
I link between storyboard by (Storyboard Reference)
The first storyboard
The second storyboard
The UINavigationController doesn't appear in the second storyboard its appear only when running the app.
according to navigation controllers property it will not show the navigation bar in your case , if you want to edit or customise navigation items or navigationbar then you have to make changes programatically .
but to make changes in navigationbar or navigation items there is some limitations sometimes you can't fully customise it and sometimes you customise it depend on your requirement ... :(
I suggest you that use navigation property but hide the navigation bar
and on place of navigation bar (on top of every view controller) set a
view which will look like navigation bar and you can easily customise
it as per your requirement .
This is normal behaviour of the Storyboard as the controller in your second storyboard does not know if it is a controller in a navigation controller, hence it does not show the navigation bar. If yo want to show the navigation bar in the storyboard you can select it in the Simulated Metrics in the Attributes Inspector (shown here in that thread). You can see it working by giving the controller a title for example.
Hi I'm new IOS and have been using the storyboard feature, I followed this tutorial which resulted in a working app. I'm slightly confused when to use a navigation controller. In the tutorial above, every tab had a navigation controller. Is this necessary?
I'm in the process of creating a new app and it seems to work whether I add a navigation controller or not to each tab (see pic).
I'm just curios what is the correct process?
Thanks.
As your app is using a UITabBarController each tab will display a separate 'branch' of views. If any of these 'branches' needs its views to be wrapped in navigation functionality (or simply display the navigation bar with a title etc) then you would add a 'UINavigationController` as the primary view controller for that tab, in between the tab bar controller and the first view controller you wish to display for that tab.
If you want a tab to simply display a view controller which doesn't need hierarchical navigation or a navigation bar then you wouldn't need to use a UINavigationController and can directly set your view controller as the controller for that tab.
I am attempting to connect a tabbar to a navigation controller.
I have the following 4 options (see image).
In the tutorial I'm following however, it says that two options will be shown only (viewControllers, and performSegewithIdentifier) so which one should I use?
Ayrad, in your storyboard, since you want to use a navigation and a tab bar controller, the main controller must be the tab and then the navigation controller, so you will arrange you canvas in order to first have the TabBarController then the NavigationController connected to it, and then a view connected to both of them, this way you will have a view with both the tab and the navigation controller.
My application consists out of a tabbarcontroller and inside i got multiple navigationControllers. Now i want to hide the bottom bar of the tabbarcontroller from the start because the buttons on the bottom bar lead to features inside the application which are just not ready yet so i dont't want the user to see them. How do i do this?
Thanks in advance!
A couple of options:
Set hidesBottomBarWhenPushed=YES on one of the controllers in your navigation controller. I'm not sure if this works on the root view controller of a navigation controller.
Hide the tab bar items by changing UITabBarController.viewControllers. I'm not sure if it lets you have a tab bar with only one tab, but it ought to.
Set the tab bar controller's delegate (see UITabBarControllerDelegate). In – tabBarController:shouldSelectViewController:, return NO if it hasn't been implemented yet.
My problem is that I want to have a tab bar view with its children view controllers shown first. In the children view controllers, depending on what controls are clicked, I either want to A) drill down within the tab bar view (swiping away the child view controller) or B) drill down over the tab bar view (swiping away the tab bar view controller).
I've tried solving this problem by wrapping a navigation controller within the children view controllers (so I can drill down using method A) of the tab bar controller and then wrapping another navigation controller around the tab bar controller itself (so I can drill down using method B), hence the title. So it goes:
Window -> UINavigationController -> UITabBarController -> UINavigationController -> child view controller
The problem is that I end up with two navigation bars:
two navigation bars!! http://img527.imageshack.us/img527/240/problemc.png
Has anyone else had this problem, and if so, how did you get around it?
Thanks!
In this case, perhaps you can simply use a UITabBar and programmatically manage its state, without nesting a tab bar controller inside another controller.
If you're using two nested UINavigationControllers I don't think you can work around having two nav bars. You may be able to subclass or method swizzle UINavigationController for the controller whose bar you don't want to show, and somehow prevent it from appearing or being created. You can probably also set the navigation bar's opaque property or hidden property accordingly which may also work, but you would probably need to do some fancy UIView rearranging to prevent empty gaps.
This is purely speculation; i don't know if either approach would work or how they would, but those ideas are what i would get started with were i trying to do this.
Just hide the bar you don't want, easy as this:
[navigationController setNavigationBarHidden:YES animated:NO];