For example in FirstViewController and I want to push SecondViewController, and I have a navigationController in FirstViewController, I could just push SecondViewController to it right?
Unless SecondViewController has another set of navigation hierarchy, then only it makes sense to create an another navigationController for it?
FirstViewController doesn't have a navigation controller in it; it is in a navigation controller.
A navigation controller is a container. The navigation bar you see at the top belongs to the navigation controller. The content below that belongs to the view controller which is currently at the top of the navigation stack (except the toolbar, if you're showing that).
You can't actually push another navigation controller onto the stack - this raises an exception. So unless you've got a tabbed app structure, most apps will have only one navigation controller.
lol wut?
Right click on the body of the Navigation Controller, drag the blue line to FirstViewController. Choose "Root View Controller" for the popup.
Right click on the body of FirstViewController and drag it to SecondViewController, Choose "push".
Click on the lines between the first and second view controllers, this is a Segue. Give the segue a unqiue Identifier like "firstToSecondSegue".
From within FirstVewController.m you can programmatically push SecondViewController onto the Navigation stack with
[self performSegueWithIdentifier:#"firstToSecondSegue" sender:self];
Related
I have a problem with SWRevealViewController. In my app I have a long chain of UIViewControllers connected to a single UINavigationController. After adding a side menu and setting the "reveal view controller push controller" segue for cells I see only ViewControllers connected with a segue. I can't move between my UIViewControllers in the chain any more. And navigation bar is missing. Is it possible to use a side bar and UINavigationBar at the same time?
I see your image I think you have to add another navigation controller before the C****** S****** View Controller or the view controller you want to go
the reason is that there is no UINavigationController before the C****** S****** View Controller and that's why Navigation bar is hidden and you can't move
I have implemented a tab bar, but as I go through the app I am not seeing the tab bar. It disappears after I go to a certain page. This is how I implemented it. I have a tab bar connected to a vc which is embedded inside a navigation controller. So the hierarchy looks like this.
----UITabBarController
-------UINavigationController
-----------ViewController 1 with button to view controller 2 (I can see the tab bar)
----------------View Controller 2 (I can't see the tab bar)
It sounds like the segue that you get from view controller 1 to view controller 2 is a "present" segue, rather than a "push" segue. (If I recall correctly, Apple removed "push" segues from Storyboards recently.) Sadly, "present"ed view controllers appear in front of the navigation controller.
In order to do a "push" segue, you have to do it in code, e.g.:
- (IBAction)buttonTapped: (id)sender
{
ViewController2 *viewController = ...
[self.navigationController pushViewController:viewController];
}
i think you missed to initial tab bar as initial view controller
I've read several posts about this issue, but I've been troubleshooting and the previous solutions don't seem to do the trick (i.e. the solutions specify embedding only the parent controller in the navigation controller, which I've tried). To address it as per previous posts, I've removed the embedding of the other views in their own navigation controllers -- but can't then seem to physically draw the segue from one table view to another; or it doesn't show the back button...
Basically, the "Back" button disappears on segue. It isn't seen in the second TableViewController and the last ViewController (on the end). It reappears in the parent, obviously.
EDIT: When I remove the navigation controller from the other two views, then no navigation bar appears on those VCs at all. The bar completely disappears, although it appears on the first one. This is how I have it configured now.
New Storyboard
Navigation Controller follows the Stack theory. When you push something in the stack it will increment the top index count by 1 and pop something in the stack it will decrease the top index count by 1.
In the navigation controller, first controller will be your root viewController. Now When you push new view controller in navigation controller, your top index count will be 2. But you are not pushing the viewController in same navigation controller (let say Stack1) you are creating the new Navigation controller (let say Stack2).
So here you are setting the new controller as the root viewController for new navigation controller(Stack2) and there are no item to pop yet that is why it's not showing the back button.
To Solve these Problem remove the navigation controller from the second and third view controller.
To push you can use segue or you can do it programmatically.
Swift
let vc2 = self.storyboard?.instantiateViewControllerWithIdentifier("ViewController2") as? ViewController2
self.navigationController?.pushViewController(vc2!, animated: true)
Objective C
ViewController2 *vc2 = [self.storyboard instantiateViewControllerWithIdentifier:#"ViewController2"];
[[self navigationController] pushViewController:vc2 animated:YES];
Navigation Controller Guideline
Edit
if you are not able to see the navigation bar on second VC
Make sure you are not hiding it by code in second VC.
Make sure you are pushing the second VC not presenting the VC.
Select VC in Interface Builder -> Attribute Inspector -> Top bar should be inferred.
if you are using segue then segue type(kind) should be Show.
Currently I'm writing a iOS app with Xamarin.iOS and I wrote a custom UITabbarController named BaseTabbarController. In this ViewController I made a centered raised UIButton over the TabBar to achieve something like this:
So this means that in my BaseTabbarController there is a onClick delegate for my button. When the button is pressed I would like to performSeque(push) to a new ViewController. The following code gives me the error: "Could not find a navigation controller for segue 'searchSegue'. Push segues can only be used when the source conroller is managed by an instance of UINavigationController".
So what should I do right now? I'm not sure how to fix this..
My storyboard looks like this and I'm talking about the second row.
If the button which causes push segue is on tabbar then you an not perform push segue on it because tabbar controller is supposed to be a rootview controller and to have push segue your controller must have navigation controller as container.
For example MyViewController is controller for view A and OneMoreViewController is controller for view B now you want to call view B from view A then embed view A inside navigation controller
// Programmatically
MyViewController *vc= [MyViewController alloc] init];
UINavigationController *nav = [UINavigationController alloc] initWithRootViewController: vc];
If you want to add that View A in tabbar then add nav object inside tabbar.
Now you can call viewB from view A using Push segue.
// and if your using storyboard then
Select the view which you want to embed inside navigationcontroller and choose Editor\Embed In\Navigation Controller from menu bar. that's it.
You've got a push segue hooked up from your tab bar controller to the navigation controller on the second row -- that's not right. That should be a relationship segue (i.e. one of the tab bar controller's view controllers, a second tab).
After Edit:
To be able to push that controller from any other controller on screen, all the base controllers in each tab will have to be a navigation controller. As long as that's true, you should be able to do this. The basic procedure would be to find out which navigation controller's stack is onscreen (with the tab bar controller's selectedViewController method), and perform a push in code from that navigation controller, using pushViewController:animated:. In the storyboard, you would want to have the controller you're pushing be disconnected from everything (no segues), and have an identifier, so you can get it from the storyboard to do the push.
Let's assume that a first view controller is connected with a UITabBarController and I want to make a push segue to the second view controller from this first view controller.
From my googling, it seems that a modal segue from a view controller connected with a UITabBarController hides the bottom tab bar, while a push segue doesn't.
However, my push segue is also hiding my tab bar in the second view controller. I have overridden prepareForSegue method in the first view controller.
Below are images of my storybard and the simulator. Anyone has an idea why this is the case? Thank you in advance for your helps.
Your trouble is because your tabViewController is embedded in the navigation stack that you initialise with your login screen.
you need to rearrange things so that each of your tab bar controller tabs opens to a new navigation stack.
What I suggest
your loginscreen should navigate to your tab bar controller with a modal/presenting segue, not a push segue. Remove the navController that encloses the loginscreen, you don't need it (well, even if you keep it, don't use a push segue, use a modal segue, and you won't then be referring back to that navController's viewController stack from inside your tab bar).
embed each of the first viewControllers in your tabViewCOntroller inside a separate navController.
Now you can push segue within your tabViewController's tabs.