In my application my first Page is a UITableviewController. Then I add a subView in UIViewcontroller like:
viewcontrollername * prod=[[viewcontrollername alloc]init];
[self.view addSubview:prod.view];
It's fine, but My problem is in UINavigation controller not working in viewcontroller page(doesn't Navigate to another Page). I have implemented it in click event:
prod *login=[[prod alloc]init];
UINavigationController *navCtrl= [[UINavigationController alloc] init];
[navCtrl pushViewController:login animated:YES];
[login release];
And
prod *login=[[prod alloc]init];
[self.navigationController pushViewController:login animated:YES];
[login release];
But it doesn't Navigate to another Page.
Use this code when you init the navigation controller :
UINavigationController *navigationCtrlSlideShowSetting = [[UINavigationController alloc] initWithRootViewController:yourviewcontroller];
Thanks
It looks like navCtrl hasn't been added to the view hierarchy. Either you add it as a subview to the window or make it the rootViewController.
Your first view controller should be the root view controller of the navigation controller.
initWithRootViewController
Alternatively you can add the newly created navigation controller to your viewcontroller.
[self.view addSubview:navCtrl.view];
Once this is done you can push view controllers to the navigation controller.
EDIT:
You need to have a back button in case you do not have a way to come back to main screen. The better option is to use navigation controller for the main screen and go on pushing views onto the stack.
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];
}
When I touch cancel button in the third view, I want to go back to the first view directly. How can I do that?
This is the code.
// this part is in the first view.
SecondController *aSecondController = [[SecondController alloc] init];
UINavigationController *aNaviController = [[UINavigationController alloc] initWithRootViewController:aSecondController];
self.naviController = aNaviController;
[aNaviController release];
[aSecondController release];
[self.view addSubview:naviController.view];
// this part is in the second view.
ThirdController *thirdController = [[ThirdController alloc] initWithStyle:UITableViewStyleGrouped];
[self.navigationController pushViewController:thirdView];
[thirdView release];
// this part is in the third view.
- (void)cancel {
[self.navigationController popViewControllerAnimated:NO]; // this only goes to the second view.
}
popToViewController, popToRootViewController only go to the second view also.
You can use popToRootViewController:animated: method, if your root view controller is the one you're after. You can also use popToViewController:animated: to specify which controller you want to end up with on the top of the navigation stack.
Use UINavigationControllers -popToRootViewControllerAnimated:
- (void)cancel {
[self.navigationController popToRootViewControllerAnimated:NO];
}
And if you ever want to pop to a specific view controller you can use popToViewController:animated: and use the viewControllers property to get the view controller at the correct index.
Set up the navigation controller in your app delegate. Make the first view controller the nav controller's root controller instead of having the first view controller own the nav controller. Then you can use -popToRootViewController:animated: as the other answers have suggested.
I am relatively new to the whole MVC way of looking at things.
I have an application that is based on the "Utility" Application template. Everything in the MainView and FlipsideView is working great but now I need to add a TableView and Navigation Controller to the flipside. Without the navigation bar being on the MainView.
So only once the user has tapped the info light button will the nav bar display on the flipside with a table view.
I have been able to impliment the Table View on the side and populate it with data from an array.
I am now struggling to link in a navigation controller so that the tableview can become interactive.
When I place the nav bar code into the app delegate it appears on the MainView and not the flipside view.
Where do I place the navigation bar code so that it will display on the flipsideview. I cannt seem to get the code in the right place.
Also I am not sure I have the right code, do I put the UINavigationController code in the FlipSideViewController.m ?
I am not grasping the concept of the naivgation controller fully I think . . .
Here is the code to bring up the FlipView
- (IBAction)showInfo
{
TableViewController *controller = [[TableViewController alloc] initWithNibName:#"TableViewController" bundle:nil];
controller.delegate = self;
controller.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
[self presentModalViewController:controller animated:YES];
[controller release];
}
Now I need to get the TableViewController to have a navigation controller and a table view
Thanks in advance.
After you create your table view controller, create a navigation controller that contains this table view controller as the root. Then, present this navigation controller modally, instead of your table view controller.
I prefer to do this programmatically, so here's the code I use:
- (IBAction)showInfo
{
TableViewController *controller = [[TableViewController alloc] initWithNibName:#"TableViewController" bundle:nil];
controller.delegate = self;
UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:controller];
[controller release];
navController.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
[self presentModalViewController:navController animated:YES];
[navController release];
}
In your table view controller, set up its navigation item to contain a button that, when tapped, causes your main view controller to dismiss the modal navigation controller (thus flipping back to itself).
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.
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!