I am new to iOS development and have been fiddling with this for a while and can't seem to find an answer or get it to work.
I have a navigation controller as the root view controller of my app. There is a table and selecting a cell will open a view that I want to be scrollable with page control.
I make a new subclass of UIViewController, call it PagingViewController. In interface builder, I just drag in a UIScrollView and a UIPageControl and lay it out appropriately on the screen.
When I push the PagingViewController onto the navigation controller, the UIPageControl does not display.
When I modify AppDelegate.m to use PagingViewController as the root view controller and start the app, the UIPageControl does display.
I'm trying to figure out why UIPageControl does not display. I think it has something to do with being used in conjunction with the navigation controller, but other answers and posts I've read seem to indicate that it is indeed possible.
And yes, in both cases, I initiate the PagingViewController in the same way. I am confused. Any help would be appreciated. Thanks.
Related
I have some static cells that I want to display, so I have a UITableViewController. There is also a NavigationBar in this scene that contains some buttons at the top. The setup looks like this:
If I had a UIViewController that contained a UITableView in it, the setup would look like:
So, the question is:
Why does the Navigation Bar have to be embedded inside the UITableView when using a UITableViewController? (I have tried putting it elsewhere but IB won't let me)
I know that UITableView is a subclass of UIView, but is it OK that the top level element in the hierarchy is not a View (but a TableView)?
Thanks.
You shouldn't be placing your UINavigationBar in your UITableView. You should be putting your UITableViewController in a UINavigationController, because that will provide a UINavigationBar for you.
So if you select your UITableViewController in the storyboard, you can choose Embed In -> Navigation Controller from the Editor menu. This would be the proper way to do it.
There are two ways to use a UINavigationBar in iOS:
Embedded inside a UINavigationController (recommended)
As a standalone object
For your particular situation, I'd recommend that you put your UITableViewController as the rootViewController of a UINavigationController. That way you automatically get a navigation bar which you can customize according to your needs. In a typical user experience, when you tap some of your table view rows a new view controller will be pushed onto the navigation stack, so you'll probably end up needing a navigation controller anyway.
What if you decide to use a navigation bar as a standalone object? This is perfectly fine, you can use it inside a view hierarchy as an ordinary UIView, but you'll need to create another object that implements the UINavigationBarDelegate protocol and set it as the delegate property of your navigation bar. If you use a UINavigationController the delegate is already set and configured for you. You also need to add/remove navigation items (instances of UINavigationItem) to your navigation bar by using the pushNavigationItem:animated: and popNavigationItemAnimated: methods.
And about your question on the view hierarchy, you can use a UITableView anywhere a UIView is required. The only caveat is that a UITableView is a view hierarchy on its own and that may restrict your layout a little bit.
The way a UITableViewController works, is its root view is a UITableView. So there is no way to put the UINavigationBar anywhere other than in the UITableView.
I tend never to use a UITableViewController as it doesn't really give you much.
If you particularly want to use the UITableViewController, I don't believe that there is any real problem in having the navigation bar within the table view. You just need to make sure that you set the contentInset on the table view such that the navigation bar doesn't block the content. Though it seems a bit backward to do it this way.
My recommendation would be to just use a normal UIViewController with a navigation bar and a table view.
If you actually need functional navigation, you need to put your UITableViewController within a UINavigationController.
Hope this helps :)
Let me know if anything is still unclear.
In my app, i have a main view controller which sometimes brings a modal view on top of it. This modal view is a UINavigationController with a navigation bar. I want to display an image above the navigation bar, and have the navigation bar appear below the image.
I do not want to subclass anything and the app uses autolayout, i do not want a bunch of delegate callbacks and frame calculations. The view inside the navigation controller (the actual modal content) must still respond to different screen sizes correctly, such as rotation, call status bar etc. Also, no IB solutions please, these views are all managed in code.
How do i accomplish this?
I would turn off AutoLayout and place the image at the top
I don't think you can do it with your modal view being a navigation controller. I would do it by making that modal controller a UIViewController that you set up as a custom container controller. You can add an image view to the top of this controller's view and add the view of a child view controller (which would be a navigation controller) to the bottom. This would be a lot easier to do in a storyboard using container views, but it certainly can be done in code.
My Question is little bit bigger so apology for that. Now my problem is i have to set a tabbar controller where first tab will contain an UIScrollView with an UIPageControl, until now i have made my tabbar controller with scrollview and uipagecontrol but i am becoming unable to add uiviewcontroller with every page control in the uiscrollview.
Any suggestion and link of source code is great help for me.
Thanks In Advance.
If it's essential for you to have a separate view controller for each page, the proper way to do this is to use view controller containment, whereby you have your scroll view act as a container for the subordinate view controllers. I recommend reading the UIViewController documentation, particularly the section entitled "Implementing a Container View Controller".
I have done this solution very simply. I have taken one UIScrollview in my main controller where my scroll will work.
In viewDidLoad i have take UIscrollview and load first,next and previous controller as a items of the scrolled view.when i scroll, then respected view controller load on the page of the scrollview.
I also take a uipagecontroll in the viewDidLoad.
Pretty new to iOS development and curious whether something is possible and if so the best want to do it.
I'd like to make a UIPageViewController be a portion of the screen. I.e., I want to have a menu bar, perhaps some additional controls and then place the page view controller on a portion of that page (so the menu bar isn't part of the page turning control). In other words, a UIPageView that acts like a scrollView that doesn't take up the whole screen.
Acceptable design?
Thanks.
Yes, this is possible, and the implementation is very easy.
Steps (implemented in XCode 6 using Storyboards)
Begin with an empty view controller.
Add a Container View from the object library on the right. The Container View may automatically embed in a regular View Controller, in which case you can just delete the View Controller because we want to embed a Page View Controller.
Select a Page View Controller from the object library on the right, and place it wherever you want in your Storyboard.
Ctrl Click + drag from the Container View to the Page View Controller, and select embed from the menu that appears. The Page View Controller should automatically resize itself to be the same size as the Container View in the original View Controller.
A nice example from apple developer sample code: PageControl. Implemented with UIScrollView and UIPageControl.
Also you may want to create a new iOS project with template "Page-Based Application". The template code is implemented with UIPageViewController.
Both implementation employ View Controller Containment.
BTW: the is no UIPageView, only UIPageControl or UIPageViewController.
You can Try Below link for uipageviewcontroller Tutorial
http://www.techotopia.com/index.php/An_Example_iOS_5_iPhone_UIPageViewController_Application
U can Try uiview for pageturning not uiviewcontroller
u can add uiview to uiviewcontroller.
like [Self.view addSubview:youruiview];
and Remove uiview controller like [youruiview removefromsuperview];
Thanks..!
I am completely new to ios development and I am only interested in developing for ios5.
I have an app with some scenes, they are mostly tableviews. I also use a navigation controller
I however need to add some status text and buttons that are always visible in all scenes and thought that a toolbar added to the navigation controller should do the trick.
so i thought that i should only have to drag out a toolbar in storyboard to the navigation controller, but it does not stick there. I can add it to the bar underneath with first responder and navigation controller but that does not help me (small icons).
I can also not add it to my table view (but if i drag out a plain view I can add it there)
do I have to make my own custom navigation class that the navigate view uses and then programatically add my toolbar?
Had the same question recently. Check Attributes Inspector in your ViewController's properties in storyboard. There you can define a Bottom Bar.
Well, inside the UINavigationController, you should have something... A UIViewController for instance. You can easily add a UIToolBar by dragging the object inside the UIView of the UIViewController. What might being happening is that as the root view you have the UITableView, in that case I think you can't do that. But to better understand, just take a small print screen of your StoryBoard.
If you zoom up to 100% on the storyboard it should drag.