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.
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
This is my story board:
Whenever I jump to a view controller embedded in navigation controller, the navigation bar is shown but empty, why?
The sequence I created it is:
connect buttons with destination view controllers
embed destination view controllers in navigation view controller
And the segue I use is present modally - cross dissolve.
The First root controllers of a navigation controller won't have any Back button attached to its navigation bar. You should add an additional View Controller next to any root View Controller of Navigation Controller with Push Segue ( or Show Segue for newer IOS ) to navigate between them.
I tested different segue transition methods with test projects, the answer I got is: if you are transitioning by presenting it modally, you don't get the back button, you only get it by push.
I encountered a problem in my app.
I have to have a UINavigationBar in all my pages, and so I created a UINavigationController 'embed in' with my first page. So the UINavigationBar appears on it, but when I perform a segue from that first page (by instating a new view controller and presenting it) the navigation bar doesn't appear on the second view controller.
Check your segue is presenting or pushing a second page.
Check out segue properties, If it's presenting by selection of 'Modal' on segue property of attribute inspector. On presenting view controller you won't get your Navigation bar.
You will get Navigation bar when you push a segue.
And If you want presenting animation on push using segue, You can go for custom segue.
Here is the link.
http://www.appcoda.com/custom-segue-animations/
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];
Can someone explain to me what is the exact difference between modal and push segue?
I know that when we use push the segue gets added to a stack, so when we keep using push it keeps occupying memory?
Can someone please show me how these two are implemented?
Modal segues can be created by simply ctrl-click and dragging to destination but when I do that with the push my app crashes.
I am pushing from a button to a UINavigationController that has a UIViewController.
A push Segue is adding another VC to the navigation stack. This assumes that VC that originates the push is part of the same navigation controller that the VC that is being added to the stack belongs to. Memory management is not an issue with navigation controllers and a deep stack. As long as you are taking care of objects you might be passing from one VC to another, the runtime will take care of the navigation stack. See the image for a visual indication:
A modal Segue is just one VC presenting another VC modally. The VCs don't have to be part of a navigation controller and the VC being presented modally is generally considered to be a "child" of the presenting (parent) VC. The modally presented VC is usually sans any navigation bars or tab bars. The presenting VC is also responsible for dismissing the modal VC it created and presented.
Swift 3.0 and XCode 8.2.1 update
1. Push Segue
Push segue has been renamed as Show segue. To create push segue, the parent view controller needs to be embedded in navigation controller. The navigation controller provides navigation bar. Once you connect two view controller with push segue, the child view controller will automatically has navigation bar on top. The child view controller will be added on top of the navigation stack.
Push segue also provides default features. The child view controller will have a back button that gets you back to the parent view controller. You can also swipe right to pop the child view controller. The animation for push segue is like sliding pages horizontally.
While you are allowed to make a push segue from a view controller that is not in a navigation controller, you will lose all the features like navigation bar, animation, gesture etc when you do so. In this case, you should embed your parent view controller inside navigation view controller first and then make push segue to child view controllers.
2. Modal Segue
A modal segue (i.e. present modally), on the other hand, is presenting over the current view controller. The child view controller will not inherit navigation view controller so the navigation bar will be lost if you present modal segue from a view controller with navigation view controller. You have to embed the child view controller in navigation controller again and start a brand new navigation stack if you want it back. If you want to get back to parent view controller, you have to implement this by yourself and call dismiss from code.
Animation for modal segue is that the child view controller will comes up from the bottom of the page. The navigation view controller is also gone in this demo
The push view must be built in a navigationController.
Click on your master view, then in the menu bar choose:
EDITOR->embed in->navigationController
This is pushing controls using custom push and segue methods for storyboard
And Modal is way to navigate through views without using Storyboards.