Tab Bar implementation within single view application - ios

I've searched for a suffice answer to this question but I've been unable to come across one that fits my dilemma. How do I implement a tab bar within my already single view application? My storyboard consist of four view controllers, a navigation view as the initial view, and 3 following table views. Now i know the order of containment must have the tab bar controller first so i embedded my navigation controller with a tab bar controller. doing this has given every view controller on my storyboard a dark gray tab bar silhouette on the bottom of each view, so i have no way of manually editing and selecting my tab bar views.
My goal is to assign my third table view controller in my storyboard as the first tab bar item. how should i do this programmatically? the first view controller acts as the default for the tab bar item. how do i change this programmatically?
here is screenshot of my storyboard:
https://41.media.tumblr.com/c3146efea93d2aeeccdcc55a6104674d/tumblr_nqqlieVI8f1tupbydo1_1280.png
here is the documentation provided by apple on the correct coding to properly assign and configure your views but its very depreciated:
https://40.media.tumblr.com/172a516075baed44cde104abf50d91aa/tumblr_nqqmngJLoA1tupbydo1_1280.png

Related

bottom selection view in iOS

I need to select a bottom horizontal list of items. and the data should be changed for each item for selection(like bottom navigation)
I tried with collection view but it's​ not working
It sounds like what you are looking for is the UITabBarController.
The tab bar interface displays tabs at the bottom of the window for selecting between the different modes and for displaying the views for that mode. This class is generally used as-is, but may also be subclassed.
Each tab of a tab bar controller interface is associated with a custom view controller. When the user selects a specific tab, the tab bar controller displays the root view of the corresponding view controller, replacing any previous views.

Navigation bar breaks in Tableview / detail view inside Tab bar controller

This is a bit of a tricky one to explain here so I'm hoping the screenshot of the storyboard of the app I'm trying to build helps to clarify what I'm trying to do.
Basically the apps starts with a nav controller and table view, when you click on a cell in the table view you go to a tab bar controller with three tabs, each tab view has its own navigation controller and subsequently there is a navigation bar on each of them, so at this point there is a back button on all tab views which takes us back to the initial table view.
The first tab view simply has some text, the next has a table view with several table cells and the last has a map view with several markers. Both the table cell and the map markers link to a detail view via a navigation controller which shows more detailed information (both via named segues). It's at this point of clicking through to the detail view where the navigation is breaking, the detail page shows no navigation bar although it is there as the title text is set, but there is no back button and it seems that the navigation context / hierarchy has been broken here somehow. The appearance of the storyboard also reflects this as it shows no Back button on the navbar on the navigation controller or the Detail view.
Without initially getting into the code in any real way I am just trying to see if there is any significant reason why these type of structure / hierarchy is just now going to work. So, my main question is does this storyboard structure seem like the correct way to go about what I'm trying to do?
Here is the storyboard:

Xcode 6 - Swift - Custom Tabbar with Navigation

I'm trying to create a tabbed application with navigation elements inside the tab bar, as seen in the picture below (the red bar) using Swift/XCode 6.2. Basically those three icons in the middle will direct the user to different view controllers. The other two icons would be context-based. For example, on a table view page you would see the menu icon and add new icon as seen in the image. However, clicking on a row would change the menu icon to a back icon, and the add icon to something else.
That's the general idea, but I'm having a very hard time implementing something even close to this. The first issue is that whenever I embed a view in a Tab Bar Controller, I can't move the tab bar to the top. However, when I create a custom UITabView in a View Controller, Control + Click and dragging a Tab Bar Item to another view doesn't create a segue. I haven't even begun to tackle having the navigation elements inside the bar.
I guess what I'm asking is just for a little guidance on what route to take to tackle this. I'm assuming I can't use a Tab Bar Controller or Navigation Controller because it doesn't seem like I can customize them all that much. So custom Tab Bar and Navigation Bars, and then implemnt the segues and button changes programmatically?
Thanks.
I will try to guide you from an architectural perspective (so you won't find much code below).
Using a UITabBarController
In order to achieve what you are suggesting, you are right you cannot use a UITabBarController straight away, among several reasons, the most immediate one is that they are meant to be always at the bottom and you want it in top (check Apple's docs). The good news is that probably you don't need it!
Note: If you still want to go with a UITabBarController for whatever reason, please see #Matt's answer.
Using a UINavigationController
You can use a UINavigationController to solve this task, since the UINavigationBar of a UINavigationController can be customized. There are multiple ways on how you can organize your view's hierarchy to achieve what you propose, but let me elaborate one option:
To customize a UINavigationBar's to add buttons, you just need to set its navigationItem's title view:
// Assuming viewWithTopButtons is a view containing the 3 top buttons
self.navigationItem.titleView = viewWithTopButtons
To add the burger menu functionality on a UINavigationController you can find several posts on how to do it and infinite frameworks you can use. Check this other SO Question for a more detailed answer (e.g. MMDrawerController, ECSlidingViewController to mention a couple).
About organizing your view hierarchy, it really depends on if when the user taps one of the main top buttons, it will always go to the first view controller in the new section or if you want to bring him back to the last view in the section where he was.
3.1 Switching sections displays the first view of the new section
Your app's UIWindow will have a single UINavigationController on top of the hierarchy. Then each of the 3 top buttons, when tapped, will change the root view controller of the UINavigationController.
Then, when the user changes section, the current navigation hierarchy is discarded by setting the new section view controller as the UINavigationController root view controller.
self.navigationController = [sectionFirstViewController]
3.2 Switching sections displays the last displayed view in the new section
This will require a slightly modified version of the above, where your each of your sections will have its own UINavigationController, so you can always keep a navigation hierarchy per section.
Then, when the user taps one of the top buttons to switch section, instead of changing as previously described, you will change the UIWindowroot view controller to the new section's UINavigationController.
window.rootViewController = sectionNavigationController
Using a custom implementation
Of course, the last and also very valid option would be that you implement yourself your own component to achieve your requirements. This is probably the option requiring the biggest effort in exchange of the highest customizability.
Choosing this option is definitely not recommend to less experienced developers.
I'd like to take a stab at this--I think it is possible to use a tab bar controller here.
Your topmost-level view controller will be a UITabBarController with a hidden UITabBar.
Each tab is contained in a UINavigationController.
All view controllers in the navigation controller will be a subclass of a view controller (say, SwitchableViewController).
In SwitchableViewController's viewDidLoad, you set the navigation item's title view (i.e. whatever's at the center; self.navigationItem.titleView) to be the view that holds the three center buttons. Could be a UISegmentedControl, or a custom view.
Whenever you tap on any of the buttons, you change the topmost UITabBarController's selected index to the view controller you want to show.
Issues you may encounter:
Table views inside tabs will have a scrollIndicatorOffset at the bottom even if the tab bar is hidden.
Solution: Play around with the automaticallyAdjustsScrollViewInsets of the tab bar controller, or the inner view controller. https://stackoverflow.com/a/29264073/855680
Your title view will be animated every time you push a new view controller in the navigation stack.
Solution: Take a look at creating a custom transition animation for the UINavigationController.

UITabBarController Header with Title

I have been trying to hours to implement a simple UITabBarController where each view (or tab) has an active header (or top bar) with the title of the view. Is there a way in Xcode 6.1.x to create a UITabBarController with pages whose title is reflected in the top bar?
As it currently stands, I cannot get the top bar to show. I'd prefer not to drag navigation bars to each view and do this manually. Also UINavigationControllers are not necessary here, as each tabbed view will only need to display a single page.
Thank you.
Changing the values of those simulated metrics fields on a storyboard or nib will not actually have any effect on the UI. It's a design/layout aid.
You will need to embed the view controllers within navigation controllers or drag navigation bars into the views.

iOS: TabController not showing with Navigation Controller

I have an app with the start screen consisting of a table menu main which links to 4 different views, then three options to information pages.
Once on any of the main menu options are chosen, the view is shown with TabBar at the bottom of the main menu options. While the nav bar at the top has a back button leading to the main menu.
I built the storyboard which goes from a table view select to a single page. After that was working and passing data, I embedded the single view into a Tab Bar Controller and added a second page. It seems to be working as I would expect however the Tab Bar is not visible on the screen.
Can please anyone help?
I have added an image of the storyboard below:
Get rid of the navigation controller. There is no deed for it so far. Make the tab bar controller your root view.
If you need a navigation conroller within a certrain tab, or some or all of them, then add navigation controllers to those tabs (to the right in your storyboard).

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