So I am pretty new to Xcode (but not programming in general, have learned a bit of python and java) and I am trying to figure out, for the life of me, how I connect bits of code in other views besides the first one when they are linked from a navigation controller.
To paint a picture of this, I essentially start out with a single view application, I have the first view and I add a button to it and then I embed it in a navigation controller by doing.. Editor -> Embed In -> Navigation Controller. The next time, as I have been following from various guides online, is that I control drag that button to that view and hit "show" to link them. Now say I have another button in that new view I just linked to. Xcode doesn't seem to let me just control drag that button onto the text in viewcontroller.swift, I believe that this is because they are two separate view controllers now however I have not a clue where the second viewcontroller2.swift file may be. Or, maybe, there is an easier way to link the two views together and actually be able to modify the source files?
If you're trying to find a "ViewController2" you won't find it, because you have to create it! Use Command-N to create a new file and choose "Cocoa Touch Class". Name it something like SecondViewController and make sure it's a subclass of UIViewController. Now you can go back to interface builder and change the class of the second view controller to whatever name you just chose, like SecondViewController.
To address the other part of your question (I think), I'm not exactly sure what you're trying to do. If you want some of your data to transfer to the new ViewController, use the prepareForSegue function in the first ViewController.
Related
I've been trying to outline the basic functionality of a swift application I was developing. I created a basic gui with the storyboard functionality that xcode provides. Here is a picture of what it looks like currently:
What I want to do next is code up a way to receive and store input from the text fields I outlined in the storyboard. Additionally I want to receive information regarding certain settings that are placed from the switches I outlined in the second screen.
I've been looking through the files that xcode provides me but I haven't been able to find the one that contains the functionality for the storyboards. If someone could point me in the right direction for that i would greatly appreciate it. Ultimately I just want to be able to manage the input provided by the interface I outlined below. Thanks!
For each view controller on the storyboard make a subclasses of UIViewController.
In the inspector panel on the left of the storyboard set the class of each view controller to their respective subclass of UIViewController.
Open up the .swift file for that view controller and storyboard and ctrl + drag from the textField to the class this will cause a small popup where you can create an IBOutlet or IBAction.
I am working on an app that uses parse so I used the "starter project" as a base and worked from there.
The issue I am facing is that the ViewController is controlling the login screen a well as others such as the tableView and mapView witch I added later.
As this is the case if it would be possible I would link the map outlet by simply dragging from the code to the map but obviously this is not possible, How could I solve this problem (I understand I may be looking at the problem the wrong way but any help would be appreciated)
here is the code with the map outlet
here is what the layout looks like
The MVC model, Model-View-Controller model, isn't intended to have an action in one view touch the controller of another view. In InterfaceBuilder, you should only ever be able to attach actions to the controller for that specific view.
In general, if you set the file owner to ViewController, then you can only link IBoutlets to that view controller not make to another one.
your map is available in your MapViewController not ViewController, so you need to give the reference/IBoutlet of map need to assign the MapViewController, if you want to implement in ViewController, you need to create new one map
No you have to create different file for each controller.
you cant add outlet of all in one controller
I just came across a slide-in menu I really like: https://github.com/uzysjung/UzysSlideMenu
I would like to use this menu for an application that uses several view controllers (UIViewControllers and UINavigationControllers).
In Xcode, I created a single view application and made the view controller (MenuViewController) show the menu, like the creator did in his example project. I added more view controllers to the storyboard and connected them via segues to the MenuViewController. Upon selecting a menu item, these segues are triggered and the selected view is shown - so far so good.
But now, I run into the following problem:
All my view controllers are shown in full screen. That means that VCs that get segue'd in the viewport don't show the menu, because it's just not implemented there. I could put the menu in every VC, but that doesn't seem to be the right way to do it (even if I use some custom delegate method that every controller calls, like putMenuInViewController:(UIViewController *)target). I think I need something like a global singleton for the menu and make it appear in every view controller, but I have absolutely no idea on how to it or what to google for.
Any points into the right direction are greatly appreciated :)
I think you need to implement one root view controller with this menu as singleton, and add other view controller as child view controller to it.
I wrote a post about it, you can find it here:http://antrix1989.blogspot.com/2013/09/uiviewcontroller-as-singleton.html
Situation: two UITabBarController's, each with their own tabs, but last tab in both is identical so want one UIViewController to show content.
Issue at runtime: Shared item only appears in one of the tab sets when shown.
Question: anyone know a way to make this work?
Link to external graphic of storyboard setup: (sorry, don't have enough reputation to post images here!)
Storyboard graphic
An Xcode project with that storyboard:
XCode Project
Each tab content item has it's own UIViewController class. They contain no code except the line to make the back buttons work.
(Yes, I know this is odd. Real situation is an iPad app where tab controllers are shown in popovers; popovers are "property editors" where different objects have different properties, but all share a common set of properties... thus one tab for "unique" props, one shared tab content for the "common" props all objects have.)
I've found a couple ways around this to get the effect I want, but if this storyboard worked it would be a much easier solution.
-- Other info, somewhat unrelated to question --
Alternate solution I'm using: TabBarControllers only link to one VC as tab content. When that tab VC loads, I use code to (a) instantiate shared VC from storyboard by identifier, (b) add that new VC object to the TabBarController via [tabController setViewControllers:list animated:NO].
(Another possible solution I like even less: not using a TabBarController, and presenting content VC's with my own "tab" graphic drawn into them, each showing "myself" as selected. Yuk.)
So I have a working solution, I'm just curious as to why this doesn't work (just a known thing in iOS API, or some magical property setting that might render it functional?)
You can't put the same view controller instance into two tab controllers. The problem is that a view (UIView) instance can only have one parent view (superview). When you try to add the view controller to the 2nd tab, the view controller's view gets removed from its first parent (the first tab) and then added to the 2nd tab.
I stumbled upon your thread while running into the same issue today...
The solution is to just make a duplicate of the view controller in story board and attach the duplicate to the other tab bar controller.
I just did it and it works...
I think the 'rdelmar' is right about this... copy it and set it ..!!
I ran across this same issue today. I managed to come up with a workaround that seems to do the trick. The key is to add a layer of separation between the tabbar and the controller you want to reuse. From each tabbar, I created a relationship to a distinct UIViewController with a container view. Then you can do an 'embed' segue from the container to the controller you actually want to reuse as the tab view. It is not quite as clean as a direct connection (not sure why that is not supported) since you do have to create a controller class for each reuse case. It is still a better solution than the nightmare of having to duplicate the actual tab view ( as well as any additional views that connect to it) for every use.
Hope this helps. Let me know if anyone needs more details.
So all I want to do is create an App that has two pages: one with a button that opens up a UIWebView in the second. It seems simple enough, yet I have spent the past two days trying to figure it out.
I create the object and put in the code for the link and ctr - drag the web-view to the controlview.h but nothing will work.
Does anyone know a tutorial or can explain this to me? I have been searching the web for the pat two days and have gotten nowhere. thank you.
Each "page" should be a separate view controller. You open the storyboard editor, drag a view controller to it, drag a web view to your new view controller, then drag a segue from the appropriate control on the first page to the second page.
You will also need to create a UIViewController class for the second page, and set the controller's identity in the storyboard editor. (Select the second controller, type command-option-3, enter the view controller's class name in the "Custom Class" section.)
In the second view controller you will need some code to make the webview do something, obviously, so you probably will want to create an outlet for the webview.
Maybe you should start out with this general guide on View Controllers. You'll learn how to use View Controllers and how to present Modal View Controllers.
After that you go on with the documentation about UIWebView.
If you do a quick search for UIWebView you'll find tons of tutorials, but basics are important :)
CONTROL+DRAG does not work on storyboard. When I click view and drag to UIWebView, it opens a black popup but I cannot see my web value. I just see "view".
It does not work on storyboard either. I tried it on xib and it works with that.