I have a TabBarController in which I have 5 tabs to access. In one of the tabs I have a Navigation Controller and then the stacks. The navigation controller is being set through IB at this point and the viewcontroller in there is also. Now my concern is that, how can I redraw something based on that particular tabbar as the tableview is not reloading the data since viewWillAppear is not being called when I am in that particular tab.
I am trying to analyze as what is the best way to trigger being in such active tab to trigger such routine. I tried tabbarcontroller didselectviewcontroller delegate pattern in my viewcontroller, and have linked the delegate in my IB from the navigation controller to tabbarcontroller.
However such delegate is not getting triggered when I am in that particular tab item. Any suggestions at this point will be really great?
Thanks
Related
I have an iOS app written in Swift with UITabBarController with 5 UIViewControllers. Now, I have a bunch of UIViewControllers that are not part of the UITabBarController. I'd like to be able to show that same tabbar but I have no idea how to do that. Any clue?
More details: This is one of the View Controllers that the tabbar has. I use storyboard references and split my view controllers into separate more manageable storyboards.
So, the big picture:
There's no initial ViewController since I use storyboardId to get to the initial Navigation Controller. From there we have a ViewController embedded in the same Navigation controller. In that ViewController, there are 2 Container views - one of the size of the bottom ViewController that contains the "hamburger" button that toggles the other Container View which has an embedded UITableView in. When a specific cell is selected it should go to Profile ViewController that's not even in the same storyboard. The segue is set to be Push. Either way, doesn't show the UITabBar on the Profile ViewController
how you doing?
I don't know if I understood, but you are trying to show tabbar after going to another screen, right? If the answer is 'yes', try to change your segue to show(e.g. push).
-----Edit-----
You can do with two ways:
Presenting Modally -> using Current Context
Use push(e.g.) with a navigation view controller, you can also hide the navigation bar if you go to Navigation controller -> Attributes inspector -> Navigation Controller -> Uncheck Shows Navigation Bar
Hope now it works!
Best regards
I have an application with a UITabBarController at its top level. I track which tab a user is on and store it so that when they reopen the application they are on the tab they were on when it was closed. So there is no default tab when the app starts up.
I have a modal screen that shows first every time the app starts. It doesn't matter which tab was saved, the user is always presented with this view.
Where should this modal view be presented from? The logical thing would be to have the UITabBarController present it as it is the rootViewController, but Apple discourages subclassing UITabBarController. Another approach would be to have a UIViewController as the rootViewController that would handle the presentation, but Apple insist that UITabBarController should be the rootViewController.
So how should I deal with this?
If you start with a window-based application and first set your viewController as rootViewController and then, after you're done with this viewController, set the tabBarController as rootViewController, i think you don't have problems.
i´ve created a UINavigationController in my appdelegate and initialized it with my "modelselectionViewController". This VC has different uibuttons and when touched, a new VC ("modelViewController") is pushed on the navigationstack.
This "modelViewController" acts as my template view and has a uitabbarcontroller with different tabs. The first VC is shown immediately but any changes on the navigationcontroller doesn´t work. I would like to set the name of the title but that navigationcontroller is null.
NSLog(#"navi: %#",
self.navigationController);
If i change my code to push the different VC when touching the different tabs, navigation works but only with a third level of navigation hierachy.
I want to know if it´s possible to use only one navigationcontroller for all my different tabs. Hope i made my setup clear. Appreciate all your help. thanks
I think you might want to read Combining ViewControllers.
In general, you should have the tabbar controller as a 'root' controller, not as a 'child' controller. A quick search in Apple's doc didn't yield a formal 'forbidden', but it might be.
If you create a UITabBarController from a view that's managed in a UINavigationController (ie: if you create a navigationcontroller first, and it's still around when you create the tabbarcontroller), you're starting a fight with the frameworks. Here's the admonishment from the docs on combining viewcontroller interfaces:
An application that uses a tab bar
controller can also use navigation
controllers in one or more tabs. When
combining these two types of view
controller in the same user interface,
the tab bar controller always acts as
the wrapper for the navigation
controllers. You never want to push a
tab bar controller onto the navigation
stack of a navigation controller.
Doing so creates an unusual situation
whereby the tab bar appears only while
a specific view controller is at the
top of the navigation stack. Tab bars
are designed to be persistent, and so
this transient approach can be
confusing to users.
I read that as "if it doesn't break something that we haven't thought of on the next update, we might reject the app anyway because it's 'confusing to users.'"
I suppose you could kill the whole navigation hierarchy and the navigationcontroller if you don't need to return there (like if you just used it for a one-time setup screen). Or you can look into other options for navigating within a viewcontroller that's managed by the navigationcontroller.
One thing to try might be to navigate to a UITableView, and use its cells to push a modal view onto the navigation stack. That would be familiar to users and also jive with the intent of the navigation classes.
I am trying to write an iPhone app that has both a UITabBar controller (and its associated views) and a plain vanilla view controller that is not part of the TabBar (i.e. an initial config page that only gets displayed the first time the app is run).
I am able to put a Tab Bar Controller and a View Controller in MainWindow.xib and shuffle between the two in the app delegate.
While this works I'm wondering if this is the best way to be implementing this.
It doesn't feel very "MVC-ish" to me but I think the two different controllers both need to be root (?)
I don't know how else I would do it.
If the config page is really only a "run once" affair, you could just pop it as a modal view from within the tab bar controller via the presentModalViewController:animated: method. (If on the other hand the config page is ever likely to be required in the future, I'd just add it as another option on the UITabBar.)
You would make the tabbarcontroller the default view. And present the viewcontroller modally in viewWillAppear or similar method. Then when you want to switch to the tabbar, you'd dismiss the modal view controller.
I am using a UINavigationController to handle the pushing and poping of viewControllers in my app. Theres a section where i have a tab bar (not using UITabbarController) which is manageed by the same UINavigationController, i simply add the UITabBar to the navigation controllers view (by using addSubview).
The Problem:
I have some UIViewControllers with table views being pushed into the navigation stack, since my Tab Bar is part of the view and not the navigation stack the TableViews are cut off at the buttom because the Navigation Controller does not know of the tab bar because its in its view and n ot the navigation stack. Without a navigation controller i would just resize the ViewControllers view and it would work fine, but when i try to do that it seems like the NavigationCOntroller just ignores my frame and sets its own and therefore the table views are cut off. I found one solution which was to add some extra cells and hide them and that works sort of OK but its kind of hackerish, anyone have any suggestion of how to go about this in a different non -hackerish way?
Thanks
Alright, so i solved the problem. I had tried resizing the UITableView instead of the viewController before, but this did not work. I just realized though, that this did not work because i was using a UITableViewController which manages its own tableView and was not letting me change the frame of it (maybe i was changing it in the wrong place, tried in viewDidLoad, i bet if i did it after the call to [super viewDidload] it would have worked..o well). So I changed the class to a UIViewController and managed the table view in there, now it works good, thanks for the replies.
Try making the root view a UIView with a UITableView for a subview. Then add the UITabBar to the UIView instance. Now the UITableView won't know about the UINavigationController.