The figure shows my storyboard, with segues as directed.
In the tabBar's landing viewcontroller (i.e. I), both tabBar and navBar are visible which is desired. However, if a segue is performed (from I) to go to another viewcontroller (here, II), I want only the navBar. I am able to hide the tabBar by using
self.tabBarController?.tabBar.isHidden = true
Next, I am able to achieve the desired result by adding navigation controller at the beginning as shown below.
This configuration will add a navbar to the viewcontrollers ahead (like splash screen) so I will have to hide the navbar in those viewcontrollers.
Is there other method that does not require to hide the bar(s) and achieve the desired effect?
You should go with your first approach. Tab bar controller have default property to hide bottom bar. See below sample code.
ViewController *viewController = [[ViewController alloc] init];
viewController.hidesBottomBarWhenPushed = YES; // This property needs to be set before pushing viewController to the navigationController's stack.
[self.navigationController pushViewController:viewController animated:YES];
This will hide your tab bar while pushing to any child controllers.
EDIT
You can also set hidesBottomBarwhenpushed from storyboard for your tabbar controller so you don’t have to write down any code.
Related
I have a UIView (with identifierSplashScreen) which basically acts as a introduction view and displays a small animation. once the animation is completed i want the view to display a tabbar view which here in after will be the main view. no data of any kind is passed on from the first UIView to the second UIView(with identifier HomeScreen). I have seen most examples where the
secondViewController *svc = [self.storyboard instantiateViewControllerWithIdentifier:#"HomeScreen"];
[self.navigationController pushViewController:svc animated:YES];
but this Pushes the view controller and a navigation bar with a back button appears which I dont want. Also I am never going to Return to the Splash Screen. it would be great if one of you could offer any help.
Iam a biggener and not a expert iOS programeer, so a simple code example will be of great help.
Instead of pushing onto the navigation stack why not replace the stack?
eg.
[self.navigationController setViewControllers:#[svc] animated:NO]
You can do a push segue and not have a navigation bar... Select your navigation controller and on the 4th tab on the right uncheck "Show Navigation Bar"
On one of my views, when a button is pressed I call another view that is a SplitViewController. If this SplitViewController is called via one of these buttons I have special objects to add to the view. mostly just nav bar items, like a cancel button. This view can be accessed elsewhere and these items are not needed which is why there is the special condition.
However, when the user is done and i pop the ViewController back to the previous screen that was selected, the nav bar disappears on that screen. I am not setting it to hidden nor am I doing anything strange with the nav bar. Simply adding the SplitViewController then popping back.
Some code..
//declare the split screen VC
SplitScreenViewController *split = [[SplitScreenViewController alloc] init];
//set the flag that this VC is coming from a button, so we need the extra nav bar items
[split setIsFromButton:YES];
[self.navigationController pushViewController:split animated:YES];
now the call back is simply...
- (void)cancelSelectionBtnClicked
{
[self.navigationController popViewControllerAnimated:YES];
}
and when the view returns, the nav bar is gone.
any ideas?
edit it should be noted this exact same thing is done elsewhere the same way(as far as I can tell) and the nav bar is visible on return.
In your ViewController's viewWillAppear you can again make your navigationBar visible.
- (void)viewWillAppear:(BOOL)animated
{
[self.navigationController setNavigationBarHidden:NO];
}
I have seen various strange navbar behavior in UISplitViewController's, and in a few cases it was because the controller was not set as the rootViewController of the window as opposed to inside a navigation controller like you have set up.
How do I navigate back to the previous page with a UITableViewController. I tried to show a navigation bar with navigation button at the top of the screen, but the navigation bar will not show. I know that you have to give the previous view a title but when I go to do that it does not show anything. Also, since it is a UITableViewController I am not able to drop a navigation bar and add a button to the main view. All I would like to do is display my lists and have the option to navigate back to the previous list with a single button in the upper left corner.
The problem you having with the NavigationController is that your tableViewController is not in the NavigationController hierarchy. Want you want to do this when adding the tableViewController:
UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:yourTableViewController];
Then you can do this to add yourTableViewController:
[self.view addSubview:navigationController.view];
If you don't want the navigationBar to appear on the tableViewController just use:
self.navigationController.navigationBarHidden = YES;
in yourTableViewController viewWillAppear method.
When your going to add the view after the tableView you just use:
[self.navigationController pushViewController:someViewController animated:YES];
It's not enough to give the child view a title. You need to give the child view's navigation item a title before you present it. For example, in the parent view, before you push the the view to the navigation stack, do something like this...
[MyChildView.MyNavigationItem setTitle:#"A cool Title"];
For the navigation you are trying to achieve you should be using a UINavigationController. It already has the functionality you describe with the navigation bar and back button built into it.
To move to the next screen (which can be a UITableViewController) you use pushViewController:animated: and to move to the previous screen you use popViewControllerAnimated: (although the built in back button will do this for you).
I suggest reading the UINavigationController class documentation if you are not already familiar with it.
I have an application with a tab bar as the root controller. I have four items in the tabbar. The second item is a table view and this should have a navigation controller of course, the thing is that i don't even get the navigation bar to show up and i have no idea how to do it. So i tried to guess after a long time in google without success. This is what i did in the viewDidLoad method:
SearchNavController *navController = [[SearchNavController alloc]init];
UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:navController];
[searchNavController release];
With that i got an IlegalArgumentException.
How can i get the navigation bar to show up?
Thanks in advance guys
Have a nice day!
Since you used interface builder to setup your tabbarcontroller. follow the following steps to get navigation bar and navigation controller in your tabbarcontroller:
Open Mainwindow.xib and select tababarcontroller .
In the attribute inspector , select the item1 in viewcontroller and from the arrows to the right change it to navigation controller.
Try this link:
link 1
Your navController should probably an ordinary UIViewController with the view you want to display. Also you need the following to actually display the navigationController:
[self presentModalViewController:navigationController animated:YES];
The navigation controller should now show up with your view as it's content.
IF you are using interface builder. Then Add UINavigation controller in each tab bar then add your view controller in uinavigation conrtroller. If you have 4 tabs then you have to put 4 navigation controller.
UITabbarcontroller ->>Tab Bar >>
UINavigationController >> set its class to your viewcontroller
after reading a lot of tutorials and threads here on stackoverflow there is one basic question left in my head.
The structure of my App should be the following:
MainMenu - fullscreen without a navigation bar but 2 buttons (button1 and button2)
Page1 - should appear by pressing button1 and should have a navigation bar at the top with a "back"-button to get back to the MainMenu.
Page2 - should appear by pressing button2 without a navigation bar at the top. Page2 should be a UISplitView. There must be a back button somewhere.
(I think this is where the problem starts, a UISplitView can't be presented modally, can it?)
You should be able to add subpages to Page1.
So how can I do that? I don't need executable code but just a hint on how the structure of my app should be. For example where to add the navigation controller, how the MainMenu looks like.
Thanks in advance!
Are you trying to create an Application for iPad?
Your Application's UI sems inconsistent being First View the only view without navigation Bar.
You will be using standard navigation to navigate to page1 from home page. So you will be adding a navigation Controller with Home View Controller as a Root View COntroller with hidden navigation bar.
eg.
-(void)applicationDidFinishLaunching:...
{
HomeViewController * hvc = [[HomeViewController alloc]init];
UInavigationController * nvc = [[UINavigationController alloc]initWithRootViewController:hvc];
nvc.navigationBar.hidden = YES;
[window addSubView:nvc.view];
}
Then on tap of first Button you will be pushing the Page1 View Controller
-(IBActtion)button1Pressed:(id)sender
{
Page1ViewCOntroller * p1vc = [[Page1ViewCOntroller alloc]init];
[self.navigationController pushViewCOntroller:p1vc animated:YES];
}
In viewWillAppear: method of Page1ViewController unhide the NavigationBar and hide it in the viewWillDisappear: method
Your Page 2 needs to be splitViewController.
Now about Split View, Apple says
The split view controller’s view should always be installed as the root view of your application window. You should never present a split view inside of a navigation or tab bar interface.
But as there is no "must" written in the above statement, and since its finally a View Controller in itselt, you should be able to add it on the window or another view.
Try to create a VIewController, with split VIew added on it, and like page1, push the View on the navigation Controller.