I know how to do it but i need to know the details, internals. How is it different from modal segue?
replace segue from code
The differences is push segue needs a UINavigationController in order to perform.
A modal segue is not in a navigation stack they can only dismiss themseleves you do not pop view back to the previous controller like you do with a push segue.
A replace segue is only relevant on iPad or iPhone 6+. You can use replace segue to replace the contents of the master or detail pane of a UISplitViewController.
Related
I am experimenting with watchkit and realize the some difference between push and modal segue.
When using modal segue and add page navigation, it works fine. But with push segue and add page navigation in the second InterfaceController, the page navigation is not showing. Anyone know why?
If you think about this, modal feels more like joining the hierarchical tree for the 1st Interface controller. But push is creating another InterfaceController. Correct me if I'm wrong. Thanks.
Presenting a controller using pushControllerWithName does not work with page-based navigation.
So I am new to IOS programming and I am using the Swift language.
After doing a couple of beginner apps. I have had some trouble on figuring the difference between the Show(e.g. Push) and the deprecated Push segues.
What I want to do is to Show/Push from a ViewController A(embeded with Navigation Controller B ) to a Navigation Controller C (containing a View Controller D).
Since when I disable the "Use size classes", the Push segue doesn't work and will report error "pushing to a navigation controller is not supported". This error makes sense since you can only push regular view controllers.
However when I enable the "Use size classes" (which turns the Viewcontroller to a square instead of a rectangle), I was able to Show(e.g. Push) to a navigation controller, which really confuses me.
So what's the main difference between the Show(e.g. Push) and the deprecated Push? As to my knowledge there is no major functional difference but the fact seems to prove me wrong and makes me confused..
Update:
I have recreated the behavior you observe. The Show (e.g Push) segue does indeed work from one viewController embedded in a navigationController to a second viewController embedded in a different navigationController.
Note that when the push happens, the second viewController slides in in the normal push way, and a back button appears that takes you back to the first viewController. This tells you that the second viewController is actually being pushed onto the stack of the first navigationController. So instead of giving you the error message, it is simply ignoring your second navigationController.
When using a navigationController, only the first viewController is imbedded in a navigationController. You don't have to embed subsequent viewControllers in a navigationController, because when you wire up the Push segue from a previous viewController in the navigationController's stack, the Storyboard will recognize that this new viewController is controlled by a navigationController and it will add the navigationBar at the top.
Original Answer:
A Show (e.g. Push) segue is an Adaptive Segue. It chooses the correct segue type based upon the situation.
If your source viewController is in embedded in a Navigation Controller, it does a Push.
If your source viewController is in a SplitViewController without a NavigationController, it does a Replace.
In all other cases, it does a Modal segue.
So, it works because it is actually doing a Modal segue in your case, which works if you aren't using size classes. You will notice that the presented viewController actually slides in from the bottom which is a tell-tale sign of a Modal segue.
You can find information about it here:
Backward Compatibility of Active Segues.
I have a problem, I used "push" to pass from a view to another one, and now with the upgrade sdk 8.0, it's deprecated. So what should i use?
If you want to use a Storyboard Segue you have to use Show (e.g. Push) segue.
This could be a possible duplicate: Adaptive segue in storyboard Xcode 6. Is push deprecated?
To make the new Show segue to acts like a Push segue, the controller has to be embedded in a navigation controller, otherwise, it acts simply like a modal segue. To embed your controller in a NavigationController, select the TableViewController from the storyboard, than select Editor->Embed In->Navigation Controller from the Xcode menu.
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.
I have a weird problem. I have created 2 viewcontrollers in my storyboard: testSegueViewcontroller and nextPageViewController.
The testSegueViewcontroller contains a UIButton NextPage. I Ctrl-dragged from this button to nextPageViewController and created a Push segue.
The problem is when i run this program and clicking on the NextButton in the testSegueViewcontroller it does not show the nextPageVieController :-(
Any ideas of what I'm doing wrong?
With this approach you should use modal segues. Push segue is a part of UINavigationController transitions
If you want to use push segue then you will need to put your testSegueViewcontroller into UINavigationController instance. This will allow the Push segue to work.
Push segue is a part of navigationcontroller if your viewcontroller is embed with uinavigation controller then only you will able to push the controller to another view. If you don't want to add navigation controller then use modal transitions.
You need to put the testSegueViewcontroller inside a UINavigationController.