I have built some view controllers in storyboard like in the picture below
I already implemented the data inside them, modal segue is used for transitions in between. Now I just realise when I push "back" button, previous view won't be properly loaded. I figure I should switch to navigation controller and add those controllers in stack instead. But I don't know how to go from where I am now.
I think I should make changes programmatically because I found building navigation controller in storyboard won't have much variation in UI design (at least I don't know how to implement existing pages in that way). So what should I do to implement programmatically? Please help me, thanks!
Select Category View Controller and go to menu: Editor > Embed In > Navigation Controller. Then change segues style from Modal to Push.
Related
I am new to IOS App development and have a question. I'm trying to segue from one view controller to another. However, it seems that every time I ctrl+drag from the options button to the adjacent view controller and choose the 'show' option, the view controller "shifts" down(bottom picture). Why does that happen and if it is not the correct behavior, how can I do it right? Thanks!
You need to set fullscreen style manually if select model style,
a fullscreen option did not show in Push type, you must use Navigation Controller if you want to set fullscreen for Push
https://i.stack.imgur.com/rg20Y.png
When you click on the segue(the line that connects view controllers) and open the Attribute Inspector in right panel, you will see the Kind is set to Present Modally. This means your view controller will popup on your current screen.
You can change the Kind to Push and it will start showing normally.
Also embed your controller in a navigation Controller
Option 2
If you dont want a navigation controller, you can also change the presentation to full screen.
If you're new to iOS
then I might suggest don't use show and don't use segue from storyboard
If you don't know the concept of navigation controller (push and pop methods), then have a look at it (You may not use show afterwards)
have a look at following link
Swift programmatically navigate to another view controller/scene
I have a total of 3 views. A menu, the main view where the action happens, and a settings menu.
You can access the settings from both the menu and the main view and go back using the back button provided by the Navigation Controller.
In the main view I have hidden the NavigationBar to free some space, and there's a specific button to go back to the menu. From what I know and have read, I assume this just adds more and more views to the Navigation Stack if I keep going from the main view to the menu again and again, creating a lot of views in the stack.
I'd like someone to tell me whether my assumption is true or not, and evt. explain me the whole process behind navigating and views.
UINavigationController has a property viewControllers which is the stack of view controllers that have been pushed there.
If you use push segues in your storyboard each time you trigger this segues you push the current controller to the stack.
If you have a special logic I suggest you manage controllers programmatically.
This might clear it all.
There are basically following types of Segues to navigate to any viewController
Show (Push)
Show Detail (Replace)
Present Modally
Present as Popover
And to move back use Unwind Segue
You can read more regarding this here
I have an app which has 5 major user flows..each flow is a few screens linking to each other...so each flow warranties its own storyboard. Each storyboard starts with a custom view controller that is embedded in a navigation controller. So far so good.
Now all of this is "stitched" together via a UITabBarController. This is the most default UI design ever known to iOS.
But turns out I don't really know how to link from tabbarcontroller, which is in its own storyboard (that is set as the main one on code project) to any of the other storyboards.
This problem looks so! simple, so I think I am missing something utterly obvious, but I just can't figure out how to do it.
So how do I link from tab bar controller in storyboard 1 to the initial view controller in storyboard 2 when a tab is tapped?
You should do this in code. You can have the tab bar controller (tbc for short) and the controller in the first tab in the app's main storyboard, and in the app delegate, instantiate the other controllers using instantiateInitialViewController. Create a mutable array by copying the tbc's viewController array, add the other controllers you instantiated to it, and then set that array as the tbc's viewControllers array.
You have to add your viewcontroller programmatically in tabbar.
Difference between navigation controller and viewcontroller?
I mean how can we decide when to use navigation controller or a normal view controller?
Just my two cents:
A UIViewController represents a single view and you can put buttons in this view controller to segue to another UIViewController. If you want to segue back to the first UIViewController, you will have to worry about putting a button in the second view controller that leads back to the first. If you are drilling down into view controllers, this can be tedious having to remember to give the user a way back to a previous view controller.
A UINavigationController does a lot of this tedious work for you. As mentioned, it contains a stack of UIViewControllers. It will create a navigation bar at the top that will allow you to easily go back up the hierarchy of view controllers.
In short, if you have a hierarchy of view controllers that you want the user to easily navigate around, inbed your UIViewControllers into a UINavigation controller.
UINavigation Controller is a combination of 2 or more view controllers,those are connected through "segue" feature of "Ios". Benefit of using Navigation Controller is that we can navigate between different screens easily with default "Back" button on each screen . We don't need to give any individual button to move back onto previous screen.
Whereas a ViewController provides a single screen & we can connect more screen using "segue" but we also have to design a "Back" button to navigate onto previous screen.
We should use Navigation Controller , in case where one option resides into another one.Like in an iPhone settings ->Mobile Data Options->Voice->4G or 3G or 2G. It's a hierarchy of menus so here navigation Controller is better option than using UIController.
We should use UiController with "segue " , in case where
we have to choose one option among multiple.Like -
Photos ->There are many folders in which , any one is selected, that are Favourites or People or Places .
Here's a very brief, high-level overview.
Whereas a UIViewController can be thought of as representing a single 'screen', UINavigationController, as the name implies, is used as a means of being able to navigate multiple 'screens'.
From the documentation:
The UINavigationController class implements a specialized view controller that manages the navigation of hierarchical content. This navigation interface makes it possible to present your data efficiently and makes it easier for the user to navigate that content. You generally use this class as-is but in iOS 6 and later you may subclass to customize the class behavior.
Please see the rest of the UINavigationController documentation here: https://developer.apple.com/library/ios/documentation/UIKit/Reference/UINavigationController_Class/index.html
Okay, Thank you everyone for helping me to find out a clear answer on this.
Navigation Controller consists of navigation bar and tool bar to move in and out from view controllers present in navigation stack.Therefore there can be many view controllers in Navigation Controller.
In view controller we don't have this facility and it represents a single screen view.
Please correct me If I am wrong.
See the Navigation Controller discussion in the View Controller Catalog.
Bottom line, a navigation controller actually is a view controller, but it just happens to be one that presents and navigates between other view controllers.
I would like to create the following navigation
I have a tab bar program build with storyboard
and I have a View controller with buttons
when I click a button A navigation controller is called
Right now I have made all the connections and everything works fine but..
in order to create the change from the button to the table view I am using modal segue and that removes my tab bar.
I know that push will not work cause its not a navigation but how can I work this out?
I had the same problem but I realized that the best option is do it using a push segue. It's the best option because when you have a table view into a tab bar item it's more usability, it's what customer want. I'm sorry for not solution your problem but I strongly recomend you to use push.