The root View View controller is Navigation controller and its first level is a TabViewController.One of the tab item is a TableViewController.
Here is the relationship:
However the navigation bar overlap the table view:
I have also set simulated metrics,So what can be the problem??
Thanks for any help.
Simulated metrics are just that, simulated. They do not actually apply to the compiled product.
To fix this, I find it easiest to set the edgesforextendedlayout with the various values of edge values. Usually all but the top.
The rootViewController should be the UITabBarController. Follow this code:
1.Make the UITabBarController the rootViewController in the application delegate or in your main.storyboard set it as the initial View Controller.
2.In the UITabBarController.m place this code there to create the UINavigationController with a UIViewController embeded inside of it.
//Inside UITabBarController.m
- (void)viewDidLoad {
[super viewDidLoad];
UIViewController *vc = [[UIViewController alloc]init];
UINavigationController *navCon = [[UINavigationController alloc] initWithRootViewController:vc];
self.viewControllers = #[navCon];
}
Get rid of the navigation controller in the beginning and, instead, embed the tableviewcontroller inside a navigation controller.
(Select the view controller -- Click "editor" > "embed in" > "navigation controller").
Make sure the tab bar controller is the root view controller as well
This will also fix the overlapping issue
Related
How to let child view controller modify navigation controller?
I am faced with this problem right now, and have not been able to find a solution that works, let alone one that works well.
Basically, right now I have a UINavigationController that contains a UITableViewController with a search bar in the navigation bar. So far so good - everything works well.
However, I would like to show some custom views between the navigation bar and the top of the table view at times. To do this, I figured it would be best to create another view controller (let's call it the ContainerViewController), which is presented by the navigation controller. This container view controller holds the table view controller as a child, and can insert any custom view it wishes to. The view controller hierarchy should look like this:
UINavigationController
ContainerViewController
UITableViewController (with UISearchDisplayController)
Now I am faced with a problem, since the search bar of the UISearchDisplayController should be displayed in the navigation bar (by calling didSetupSearchDisplayController), but I obviously want all logic pertaining to it kept in the UITableViewController. I need the container view controller to sort of act as a go-between here. I have tried to figure this out, but haven't managed a solution yet.
Here is how I instantiate the table view controller and add it as a child in the container view controller.
- (void)viewDidLoad {
[super viewDidLoad];
// Load view controller from storyboard
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"Main" bundle: nil];
self.contentViewController = [storyboard instantiateViewControllerWithIdentifier:#"MyListViewController"];
self.contentViewController.view.translatesAutoresizingMaskIntoConstraints = NO;
// Add its view to the content view
[self addChildViewController:self.contentViewController];
[self.container addSubview:self.contentViewController.view];
[self.contentViewController didMoveToParentViewController:self];
// Set up constraints
[self.contentViewController.view autoPinEdgesToSuperviewEdgesWithInsets:UIEdgeInsetsZero];
}
In the child view controller, I have noticed that self.navigationController is nil in viewDidLoad but not in didMoveToParentViewController. So the following works:
- (void)didMoveToParentViewController:(UIViewController *)parent {
// Hide separator below navigation bar
self.navigationController.navigationBar.clipsToBounds = YES;
}
But I cannot set the search bar to display in the navigation bar, nor can I set the navigation bar title (with self.title = ...) from within the child view controller.
Would appreciate any help.
EDIT: Here is some code I use in the UITableViewController (the contained view) to create the search display controller:
UISearchBar *searchBar = [[UISearchBar alloc] init];
self.mySearchDisplayController = [[UISearchDisplayController alloc] initWithSearchBar:searchBar contentsController:self];
// Show search bar in navigation bar (instead of in its own bar underneath)
self.searchDisplayController.displaysSearchBarInNavigationBar = YES;
// Set self as delegate to search display controller and its table view
self.searchDisplayController.delegate = self;
self.searchDisplayController.searchResultsDelegate = self;
I have tried doing this both in viewDidLoad, where the self.navigationController is nil, and in didMoveToParentViewController, where the navigation controller exists, but it does not seem to matter. My guess is that the displaysSearchBarInNavigationBar magic happens after the child view is instantiated but before it is added as a child view (and thus gets access to the navigation controller).
can you use
self.parentViewController.navigationController
to get the reference to the navigation controller from within the container view?
This may help you find your answer. We use this to set the title of our navigation controller
self.navigationItem.title=#"Name of view goes here";
You should be able to use self.navigationItem to get a handle to the navigation bar.
I have a tab bar controller with a button like so:
- (void) addButtonPressed:(UIButton *) sender
{
[sender setBackgroundColor:[UIColor regularColor]];
PostViewController *post = [[PostViewController alloc] init];
[self.navigationController pushViewController:post animated:YES];
}
This code runs but the PostViewController is never shown and the tab bar controller remains.
How do I get to push to a new controller?
The NavigationController was created and StartViewController was add as rootController.
Then in StartViewController I have:
TabBarController *tab = [[TabBarController alloc] init];
// Presentation
[self presentViewController:tab animated:NO completion:nil];
in tab bar you need to create separate Navigation Controllers.
Suppose there are 3 tabs A, B and C. All the three tabs have functionality of navigation from one view to another. than you need to create three separate Navigation controllers eact pointing to Tab A, B and C. In this way you can navigate to any class within the specific Tab.
Check out this link for more details.
Hope this will help you. Happy coding :)
You may need to embed your tab bar controller within a navigation controller, In your storyboard click on your tabbarController so that it is highlighted with all the blue lines and then go to Editor in Xcode choose embed IN> UINavigationController ..If you want to do it programatically then in your AppDelegate where you setup your Window just Use This::
UINavigationController* navigationController = [[UINavigationController alloc] initWithRootViewController:tabBarController];
navigationController.toolbarHidden=YES;
navigationController.navigationBarHidden=YES;
self.window.rootViewController =navigationController;
if you are using .xib then you have to use NSBundle to load nib
if you are using storyboard then you need to use prepareForSegue to pass on data or just display it out
I'm new to xcode ios 7.
I've struggling a lot with navigation controls building app for iPhone ios7.
I don't want to use storyboard. I prefer to do it programmatically.
What i am trying to do.
I know how to create NavigationBar & Navigation Toolbar via AppDelegate.m
But if it's possible i don't want to do it, because let's assume i want in FirstViewController to show just simple button "Go to Second View Controller" (No Navigation Bar or Toolbar here).
And now in SecondViewController i want to create Navigation Toolbar (bottom) with 4 different tabs linking to ViewControllers!
But the trick is, i want to maintain different Navigation Bar (top) for every ViewController (as you can see in this screenshot).
Here is my Xcode Project File
And here is screenshot form Fancy app showing what i am trying to achieve.
Thanks a lot in advance!
Just to give you an idea, When you tap the button on your first view controller, you can create a UINavigationController and set your second view controller as its root view controller. This way, your first view controller remains no nav bar view and the second view controller holds a Navigation controller. Try something like below:
-(IBAction)goToSecondVC:(id)sender // An action for the button in your first VC
{
SecondViewController *secondVC = [[SecondViewController alloc] initWithNibName:#"SecondViewController" bundle:nil]; //Init with second view controller
UINavigationController *secondNavVC = [[UINavigationController alloc] initWithRootViewController:secondVC]; // create a navigation controller and set the root as your second view controller
[self presentViewController:secondNavVC animated:YES completion:nil]; // and then present it with anim or no anim..
}
Adding tab bar controller to the UIView by [self.view addSubview:tabBarController.view];
is not loaded the content view controllers view, while selecting the tab bar items it crashed. When set the tab bar controller to the root view controller its working fine. How to set tab bar controller into UIView so that I can set another view for some other purpose like iAd?
You just create one tabbar controller in app delegate but don't add it to window, and in view controller you have just add these:
gObjAppDelegate.tabBarController = [[UITabBarController alloc] init];
gObjAppDelegate.tabBarController.viewControllers = #[viewController1, viewController2];
[gObjAppDelegate.tabBarController setSelectedIndex:0];
[self.navigationController pushViewController:gObjAppDelegate.tabBarController animated:YES];
gObjAppDelegate is shared singleton instance of app delegate.This way it worked for me.
I have been seeing this issue and resolving it by manually creating UINavigationController in the code. Could someone please tell me when I add Navigation Bar from XIB's Attribute Inspector -> Set Top bar to Black Navigation bar, it gets displayed in the XIB but when I run the program, it doesn't appear! I noticed that self.NavigationController was coming nil so I added UINavigationController in my XIB and assign NIB but still it's nil! What's wrong with this? Do I need any additional settings?
[EDIT1]
I tried adding it like below and it works but I want parent class to forward rotation and appearance events to child controller automatically. If I do following it won't send them because I am adding nvc as child and not marketsListViewController. So I thought I have to subclass UINavigationController. See EDIT2.
self.marketsListViewController = [[MarketsListViewController alloc] initWithNibName:#"MarketsListViewController" bundle:nil];
UINavigationController *nvc = [[UINavigationController alloc] initWithRootViewController:self.marketsListViewController];
nvc.navigationBar.barStyle = UIBarStyleBlack;
[self.marketsListView addSubview:nvc.view];
[self addChildViewController:nvc];
[nvc didMoveToParentViewController:self];
[EDIT2]
I have subclassed marketsListViewController to UINavigationController and thought following will work but it doesn't. It just displays navigation bar, UITableView doesn't get displayed!
self.marketsListViewController = [[MarketsListViewController alloc] initWithNibName:#"MarketsListViewController" bundle:nil];
self.marketsListViewController.navigationBar.barStyle = UIBarStyleBlack;
[self.marketsListView addSubview:self.marketsListViewController.view];
[self addChildViewController:self.marketsListViewController];
[self.marketsListViewController didMoveToParentViewController:self];
[EDIT3]
I was wrong in Edit1 that children controller won't get rotation events when I add child as navigation controller's root controller. Parent still sends all the events automatically and that's what I want! :)
Could someone please tell me when I add Navigation Bar from XIB's
Attribute Inspector -> Set Top bar to Black Navigation bar, it gets
displayed in the XIB but when I run the program, it doesn't appear!
What you see in you .xib file is just there to help you get your layout right and get a good idea of what it'll look like. When you have an app that uses a navigation bar, the bar is almost always managed by a navigation view controller (UINavigationController). The view controllers that the navigation controller hosts don't worry about the nav bar -- their view hierarchies go in the space beneath the bar.
So, the right way to get a navigation bar in your app is almost certainly to use a navigation controller. If you only have one view controller, make that that the navigation controller's root view controller (note: the root view controller of the window will be the navigation view controller). You can change the appearance of the bar from your view controller by setting the navigation bar's style:
self.navigationController.navigationBar.barStyle = UIBarStyleBlack;
Update: In the code you posted, you're just creating a new navigation controller, but not doing anything with it. I alluded above the the fact that (in most cases) the navigation controller should be the window's root view controller. It's fine to create your navigation controller in code, but you'll usually do it in the app delegate, and once you create it you'll set it as the window's root view controller. Here's an example borrowed from a project made fresh from Xcode's master/detail template (sans storyboards):
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
MasterViewController *masterViewController = [[MasterViewController alloc] initWithNibName:#"MMMasterViewController" bundle:nil];
self.navigationController = [[UINavigationController alloc] initWithRootViewController:masterViewController];
self.window.rootViewController = self.navigationController;
[self.window makeKeyAndVisible];
return YES;
}
Note that after creating the window and the navigation controller, the code sets the nav controller as the window's root view controller.