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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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:
I have a tabbed based iOS application. The fourth tab is linked to a UINavigationController. When I navigate to the home tab from the fourth tab, the UI elements of the home tab are pushed down. However, if I rotate the phone to landscape and then back to portrait, everything has moved up and is in the correct place.
In Storyboard, I set the top bar to none. I have the UINavigationBar hidden in the fourth tab/view controller before I navigate to the home tab.
Why would it be that the rotation fixes the constraints? How can I fix the UI elements such that they are not pushed down in the first place?
Here is a screen shot of my storyboard:
Your question doesn't really make sense. A 4th tab would not be embedded in a navigation controller. Instead, the 4th tab would link to a navigation controller. When you first select that tab you'd see the root view controller and it's navigation bar item. If you pushed a new view controller it would get pushed onto the navigation controller in tab 4. If you switch to one of the other tabs then the navigation controller will be swapped away and it's navigation bar will no longer be visible. Swap back to tab 4 you'll see it again, complete with it's navigation bar.
I created a sample app in order to confirm what I'm describing, as I haven't used tab bar controllers a lot, and not in quite a while I can upload the project if you really need to see it. It only contains a couple of lines of code (to implement the button on the navigation controller's view controller that creates and pushes a new view controller.)
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
I have UITabBarController based app. To simplify, let's assume I have one Tab Bar Item pointing to Navigation Controller that holds Table View Controller.
In addition I have a separate Scroll View Controller.
What I'm trying to solve is how can I have Scroll View Controller loaded after app launch and Tab Bar visible at one time. It means that Scroll View shouldn't be one of the tabs.
I'm puzzled how to achieve it. Appreciated for any help.
I have a little app that shows a list of dvds, then you can drill down from the table view and get some details. It also has a tab bar at the bottom and you can switch from dvds to bluray as tab buttons. This all works fine.
In reading about tab bar apps, I saw a demo that once you added more than 5 tab bar buttons, "more" would show up and then you can drag-n-drop the buttons like in Apple's Music app, which is cool! I also noticed that each tab bar button controlled a separate navigation controller, which was a new technique to me.
When I created my app, it had a single navigation controller and I added a view controller with the top of the view being a table view and the bottom of the view a tab bar. I then drag buttons to the button bar and can add more than 5 buttons and "more" doesn't show up.
So, I figure, it needs to to be a different navigation controller design.
I am confused on if I can take my app and embed a tab view controller or if I can adapt what I have or not.
Right now, since all tabs are basically the same (a table that drills down to a detail view) I just reload the data from a different file when the tab is switched. Nice and clean.
If I switched to the tab view controller concept, it seems wasteful to create 5 navigation controllers with 5 table views that drill down to 5 detail views. Plus what if I wanted 7? or 9? (I do realize (or guess) that I can give each 5 views the same class name, but still the UI has lots of storyboards…)
This is a design question to better understand what my options are.
Tab bar controller must always be the root controller of an application. (Unless it's in a split view, in which case the different sides of the split can be a tab bar controller - but it still has to be the root.)
So, the correct design for your app is: tab bar controller as root, each tab containing a navigation controller, each navigation controller having your table view controller as the first view controller. It may seem wasteful but if you think about it, each tab really needs to have its own stack of controllers, so there's no other reasonable way to do it. If user on tab 1 is 2 deep in a nav stack but tab 2 is 7 deep you don't want to switch between tabs and lose your place.