I have the following hierarchy in Storyboard
Tab Bar Controller >> Navigation Controller >> Players View Controller (Table View Controller) >> Player Details View Controller.
All navigation is done in storyboards using relationships / segues. Delegates are used for backward navigation.
I want to open Players detail view controller when a push notification is received. Also if any other view controllers are in top of hierarchy, I want to remove all views before showing players detail view controller.
Is it possible to navigate using the above scenario. Any help will be highly appreciated. Reply for any clarifications.
Instead of using the segue from storyboard, we can use the old way to manually push to PlayerDetailsViewController, like this:
PlayerDetailsViewController *playersDetailsViewController = [yourStoryboardInstance instantiateViewControllerWithIdentifier:#"PlayerDetailsViewController"];
[self.navigationController pushViewController:playersDetailsViewController animated:YES];
Whenever the push nitification coming, just call the method above to manually push.
Related
Sorry if this is a noob question, I'm starting to learn iOS programming.
As I see im many tutorials and examples, the 1st item in storyboard is almost always a Navigation Controller, like in the image below:
My question is: what is the reason to always put a Navigation Controller as the first view controller? Like in the image above, I think that can remove the Navigation Controller and set the Test Table View Controller as the first view controller, so why need a Navigation Controller there?
Because the navigation controller is what allows tapping a table cell to do a push segue to the next view controller.
Using Navigation Controller could let you make the push segue, It allows you to manage your views in a stack. It's OK to remove the Navigation controller, but you must use another segue to transform controllers.
So... I've got a ViewController that's being pushed onto a NavigationController. In interface builder I create a separate ViewController and Embed it into a TabBarController and it looks good in Interface Builder.
In my app, I'm trying to go from one of the ViewControllers in my NavigationView to the ViewController in the TabBarController. How would I do this the correct way? I can't just push the view onto the NavigationController, because the tab bar at the bottom won't show up.
Any help would be greatly appreciate.
I believe you're operating with the UINavigationController and UITabBarController in a backwards order to recommended best-practice.
Unless something has changed in the last year or two (which may have happened) the UINavigationController should never have a UITabBarController pushed onto it. If you are using a UITabBarController in your app, it should be the window.rootViewController, and the navigation controller being member of the UITabBarController's viewControllers array.
I'm trying to go from one of the ViewControllers in my NavigationView
to the ViewController in the TabBarController. How would I do this the
correct way?
In that structure, you'd assign your destination view controller as another element of the viewControllers array. Then, in my style, I'd send a NSNotification something like "LaunchOtherViewController" from your first view controller, and thus you have no need for the first view controller to know about the tab bar controller or second view controller. Then have some class that knows about the second view controller receive that notification, and update the selectedIndex of the UITabBarController to that of the second, destination view controller.
Hope that makes sense.
You need to push the TabBarController onto the view. You may need to set the selected view controller of the tab bar, but it's important the tab bar controller be actually pushed onto the navigation stack (or presented modally).
I have a hierarchy of 3 TableViewControllers embeded in Navigation Controller and I need to launch on the most detailed level on the top of the hierarchy. If I change 'Is Initial View Controller' in storyboard to the last detailed TableViewController, my app launches with the selected TVC, but with no NavigationBar. How can I launch on the desired level of hierarchy and keep the Navigation Controller managing the stack of views?
Thank you.
You're telling the storyboard that your third view controller is the root view controller--it has no navigation bar. If you want the navigation controller present as the root view controller then you need to make it the initial view controller, then change the navigation's root to your third view controller.
eg:
initial-->[navigation controller]-->[third VC] [first VC]-->[second VC] (keep these around if you want... just disconnect them from the navigation controller)
You would have to select the ViewController that you want as initial and embed it into a NavigationController, and then add all of the other views after that using push segues.
But why do that? Why not just have the first viewcontroller display the data that you will have in the third view controller? you will end up with the same results.
You should also check out this.
I have an application in Xcode 4.6 that uses storyboards. The root view controller is embedded in a navigation controller, and all view controllers in the application are accessed via push segues via the navigation controller.
I ran into a complication when I wanted to have one particular view controller (called photos) accessed via a push segue by two different view controllers. I ended up with what appeared to be a navigation controller inside a navigation controller in the photos controller after I added the second segue. The goal is to just have (in photos) one navigation bar with a dismiss button that (when pressed) pops back to whichever of the two view controllers presented the photos view controller. I am somewhat new to iOS and I am not sure of the best way to accomplish this or how to generally handle this situation.
Here is a picture of my storyboard for reference:
You should really do it programmatically using SotyboardID. It's only a few lines of code in each ViewControler.
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.