I am loading a Modal view controller using the following code in my RootViewController:
[self.navigationController presentModalViewController:accountViewController animated:YES];
In the accountViewController xib file, I have set a navigation bar. My MainWindow.xib and RootViewController.xib also have the navigation bar setup correctly. Additionally, my app delegate has setup the navigation controller (I assume) correctly:
UINavigationController *aNavigationController = [[UINavigationController alloc] initWithRootViewController:rootViewController];
self.navigationController = aNavigationController;
[window addSubview:navigationController.view];
However, when I load my accountViewController the UINavigationBar is nowhere to be seen. Is it not possible to show a UINavigationBar in a modal view? I was planning to use it to hide the back button, and add a right button...
sha's answer is correct, but I'm giving my own answer to expand on it with a code example to make it clear.
You probably want something like:
- (void)showAccountViewController
{
AccountViewController* accountViewController = [[AccountViewController alloc] initWithNibName:#"AccountView" bundle:nil];
...
// Initialize properties of accountViewController
...
UINavigationController* navController = [[UINavigationController alloc] initWithRootViewController:accountViewController];
[self.navigationController presentModalViewController:navController animated:YES];
[navController release];
[accountViewController release];
}
You need to push not viewController but navigationController that has viewController inside.
You can also set the presentation style in the Attribute Inspector to "Current Context". Modal View will not cover the Navigational Bar.
Related
I'm extremly new to iphone and I have the following misunderstanding.
All over internet the tutorials about how to use NavigationController programatically it says:
NavigationController must be declared in applicationDidFinishLaunching and must be init with a root.After that you can add views to it.
I have this:
A UIViewController class meaning(AdiViewController.h, AdiViewController.m and AdiViewController.xib) and no Delegate file meaning no applicationDidFinishLaunching method.
What I wanna do is from my class-AdiViewController when pressing a button to go to another view.
I understand that I need a NavigationController which should retain my views having the root AdiViewController.
But my problem is where should I initializate that NavigationController in viewDidAppear??...cause I don't have the Delegate files.
If you could provide a minimal example with this small issue of mine it would be great.I'm sure that for those how are senior this is nothing but still I don't get it.Thanks
NavigationController must be declared in applicationDidFinishLaunching -> this is not true.
In your AdiViewController if you have button when you push that button you want to load navigation Controller right ?
// Hook this IBAction to your button in AdiViewController
- (IBAction)pushNavController
{
AnotherViewController* rootView = [[AnotherViewController alloc] initWithNibName:#"Anotherview" bundle:nil];
UINavigationController* navController = [[UINavigationController alloc] initWithRootViewController:rootView];
[rootView release];
[self presentModalViewController:navController animated:YES];
[navController release];
}
If you are in AnotherViewController i.e., you are in root view controller of Navigation controller. You need to push and pop view controllers from there. For example if you have a button in AnotherViewController:
// push next view controller onto navigation controller's stack
- (IBAction)pushNextViewController
{
NextViewController* nextView = [[NextViewController alloc] initWithNibName:#"NextView" bundle:nil];
[self.navigationController pushViewController:nextView animated:YES];
[nextView release];
}
// Similarly if you want to go back to AnotherViewController from NextViewController you just pop that from navigation controller's stack
- (IBAction)pushNextViewController
{
[self.navigationController popViewControllerAnimated:YES];
}
I'm having trouble initializing a viewcontroller when the app loads in my app delegate. The viewcontroller loads okay, but it overlaps the tabbar that I have at the bottom. Do I need to create another viewcontroller and have it load into that in the app delegate? I currently have a tabBarController set up in my MainWindow.xib, which contains Navigation controllers and inside those are viewControllers.
Here is my code...
In my didFinishLaunchingWithOptions I have:
sub = [[SubGabViewController alloc] initWithNibName:#"SubGabViewController" bundle:nil];
nav = [[UINavigationController alloc] initWithRootViewController:sub];
[window addSubview:nav.view];
Should it be something like?
sub = [[SubGabViewController alloc] initWithNibName:#"SubGabViewController" bundle:nil];
nav = [[UINavigationController alloc] initWithRootViewController:sub];
[newViewController.view addSubview:nav.view];
Thanks!
If you're trying to use a UITabBarController, each tab has its own root view controller (these can even be UINavigationController objects). Assuming you have a property for self.tabBarController (I think this gets created by default in Xcode if you are doing a tab-bar app), then:
sub = [[SubGabViewController alloc] initWithNibName:#"SubGabViewContrller" bundle:nil];
nav = [[UINavigationContoller alloc] initWithRootViewController:sub];
[self.tabBarController setViewControllers:[NSArray arrayWithObject:nav] animated:NO];
self.window.rootViewController = self.tabBarController;
// Clean up memory here... only if you don't need references to them
[sub release];
[nav release];
With setViewControllers:animated: you should probably include additional view controllers in the NSArray, otherwise you'll end up with a tab bar only containing one item!
[window addSubview:tabBarController.view]; would be right......
Rather than adding navigation controller using code..... you should add it from Interface Builder.... in interface builder remove the tabBarItem and add a navigationController on it and then set viewController for that navigation controller..........
create an outlet of tabBarController in appDelegate so that you can add it on window. Pleas do not forget to make connection between components in Interface Builder.
Thanks,
In my application the modal navigationcontroller that I am presenting is going under the current navigationcontroller so I'm not able to view the new navigationbar as it's disappearing under the current one.
I'm presenting the modalview on self and not self.navigationcontroller because self.navigationcontroller doesn't present the modalviewcontroller.
Also how to push a view on this modal navigationcontroller?
I'm using following code in one of my viewControllers:
fullListTopCompanies *fullListTopCompaniesInstance = [[fullListTopCompanies alloc] initWithNibName:#"fullListTopCompanies" bundle:nil];
UINavigationController *navigationController = [[UINavigationController alloc]
initWithRootViewController:fullListTopCompaniesInstance];
fullListTopCompaniesInstance.navigationController.navigationItem.title = #"F";
[self presentModalViewController:navigationController animated:YES];
[navigationController release];
[fullListTopCompaniesInstance release];
Can anybody please help?
Thanx in advance.
use animated with transition
according to me you have to change the animation style
i done it before but forgot the code i will post it when i get it
self.navigationController.navigationItem.title = #"F";
Add the above line of code in viewDidLoad method of "fullListTopCompanies" class.
Actually your navigation bar hides because of the modal view and modal view by default doesnt have Navigation bar.To add a navigation bar to modal view you can try the below code:
In Header File
IBOutlet fullListTopCompanies *fullListTopCompaniesInstance;
In Implementation File
UINavigationController *nav = [[UINavigationController alloc] initWithNibName:#"fullListTopCompanies" bundle:nil];
[self presentModalViewController:nav animated:YES];
[nav release];
Also on the "fullListTopCompanies" View Controller dont forget to put a left navigation bar button item for dismissing the modal view.
So add that left bar button (Ideally Cancel Button on navigation bar) and event handler for that left barr button should contain the code
[self dismissModalViewControllerAnimated:YES];
Hope this helps.
So, I'm having some issues with my implementation of the Three20 TTLauncherView. I am using their code, not a fork (although I have heard of rodmaz's version), and I can't get it to work properly. This is what my app looks like.
alt text http://img709.imageshack.us/img709/8792/screenshot20100715at409.png
I removed the icon image, that's not the issue. The issue is, at the top there is no Navigation bar at all, and I believe also causes the white strip at the bottom, which appears to have the same dimensions as a Nav Bar. I've spent quite a while looking through their code and can't figure this out at all. It looks like their Navigation bar (as seen in their Catalog example app) stems from the TTTableViewController, or something further up. However, my app starts like the Facebook app does, not into a table, but into the TTLauncherView. So... how do I get the Navigation bar into my TTLauncher view, if it goes "App Delegate -> TTLauncherView Subclass"
Thanks for your help!
Edit:
Added the code I used. I put this in my app delegate, wrapping my first view with the UINavigation Controller, and it worked just as I wanted!
MainViewController *aController = [[MainViewController alloc] initWithNibName:nil bundle:nil]; //my Main view
self.mainViewController = aController;
[aController release]; //release for Memory Management
self.mainViewController.view.frame = [UIScreen mainScreen].applicationFrame;
UINavigationController *navigationController = [[UINavigationController alloc] init];
[navigationController pushViewController:self.mainViewController animated:NO]; //Gets the main view on the screen
[window addSubview:navigationController.view];
You simply wrap the view with a navigation bar before you push the new view. As an example, here is a snippet of my code where I present a modal view controller with a navigation bar.
- (IBAction) showNewNavView: (id) sender
{
// Present it as a modal view and wrap the controller in a navigation controller to provide a navigation bar for the Edit and Save buttons
ModalViewController *addController = [[ModalViewController alloc] initWithNibName:#"ModalViewController" bundle:nil];
addController.delegate = self;
UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:addController];
navigationController.navigationBar.barStyle = UIBarStyleBlackTranslucent;
[self presentModalViewController:navigationController animated:YES];
[navigationController release];
[addController release];
}
If you want to add any buttons or set the title of it, you need to do that in the viewDidLoad method of the view that you are pushing (i.e. your TTLauncher view)
I'm building an application based on the Utility template from Xcode, to which I have added some more views. My application structure would be as follows:
MainView (the app menu)
Flip-side view (a calculator)
UINavigationController
Settings view
viewDiDLoad: UITabBarController
- Tab1 view (options)
- Tab2 view (information text)
I can navigate correctly from my MainView to my Flip-side view, which is also the root view of the Navigation Controller. From my Flip-side view, I push a second view of my Navigation Controller (Settings view) that is configured to show an UITabBarController, with two tabs, as soon as it loads (with viewDidLoad).
If I remove the UITabBarController, I can return with no problems to my Flip-side view using "popViewController" from my Settings view. The problem comes if I load the UITabBarController in viewDiDLoad in my Settings view... the tabs work perfectly, but I'm not able to return to my Flip-side view (root view of the Navigation Controller) anymore.
I CAN return if I use the Navigation Bar of the Navigation Controller, but I want to configure my own buttons and have the Navigation Bar hidden.
So far I've tried the following methods:
[self.navigationController popViewControllerAnimated:YES];
[self.navigationController popToRootViewControllerAnimated:YES];
[self.navigationController popToViewController:FlipSideViewController animated:YES];
But they don't seem to work. The first two just do nothing (the screen remains as it was), and the third one does not recognize the "FlipsideViewController" (maybe because it's a delegate of the MainViewController?).
Is there a way to check what is exactly doing the "back" button of the Navigation Bar if I activate it?
Should I be using delegates?
Can I call a popViewController method in my Settings view from any of the two Tab views?
This is my Flip-side view:
- (IBAction)showSettingsView {
SettingsViewController *controller = [[SettingsViewController alloc] initWithNibName:#"SettingsView" bundle:nil];
controller.title = #"Settings";
[self.navigationController pushViewController:controller animated:YES];
[controller release];
}
This is my Settings view:
- (void)viewDidLoad {
[super viewDidLoad];
tabBarController = [[UITabBarController alloc] init];
Tab1ViewController* vc1 = [[Tab1ViewController alloc] init];
Tab2ViewController* vc2 = [[Tab2ViewController alloc] init];
NSArray* controllers = [NSArray arrayWithObjects:vc1, vc2, nil];
tabBarController.viewControllers = controllers;
[self.view addSubview:tabBarController.view];
}
And the method to return in one of the Tab views:
- (IBAction)backFromTab1View {
[self.navigationController popToViewController:FlipSideViewController animated:YES];
}
Thanks very much and sorry if the question is too basic!
I actually solved the problem creating my own UINavigationBar in the Settings view and using:
[self.view insertSubview:tabBarController.view belowSubview:myNavigationBar];
That inserts the rest of the view below the Navigation Bar and I still can use it to configure a button which pops the view and return to the previous screen.
It took me a while to realise the differences between "addSubview" and "inserSubview + belowSubview". Sorry about that!