In order to restore my iphone application to a paticular view controller, i am trying to push the view controllers one after another in the application delegate.
The order of the view controllers on the stack initially is :
1. Root View Controller
2. First View Controller
3. Second View Controller
What I want is that when my application launches, it should go directly to the Second view controller. For this I have written the following code :
[self.navigationController popToRootViewControllerAnimated:NO];
RootViewController *rootViewController = [[RootViewController alloc]initWithNibName:#"RootViewController" bundle:[NSBundle mainBundle]];
[self.navigationController pushViewController:rootViewController animated:NO];
FirstViewController *firstViewController=[[NSClassFromString(#"FirstViewController") alloc] initWithNibName:#"FirstViewController" bundle:[NSBundle mainBundle]];
[self.navigationController pushViewController:firstViewController animated:NO];
SecondViewController *secondViewController=[[NSClassFromString(#"SecondViewController") alloc] initWithNibName:#"SecondViewController" bundle:[NSBundle mainBundle]];
[self.navigationController pushViewController:secondViewController animated:NO];
The problem is that when the Second view controller loads, its back button is named "Back" , instead of the title of the first view controller. I have not explicitly set a back button in the third view controller.
Regards
You should set the title of the UINvaigationItem for FirstViewController, which will be aditionally seen in the center of navigation bar.
Related
I'm using a UIScrollView to display some images, and i need to present or push another view when the user selects one part of the image.This ScrollView is created only programmatically.
How i can programmatically add a navigationController to it and present another view?
I tried this way but just give me the following error :
Pushing a navigation controller is not supported'
StatesViewController * controller = [[StatesViewController alloc]initWithNibName:#"StatesViewController" bundle:nil];
UINavigationController * Navcontroller = [[UINavigationController alloc] initWithRootViewController:controller];
[self presentModalViewController: Navcontroller animated: YES];
this might help you.
NextViewController *nextViewController=[[NextViewController alloc]initWithNibName:#"NextViewController" bundle:nil];
UINavigationController *navBar=[[UINavigationController alloc]initWithRootViewController:nextViewController];
[self.navigationController presentModalViewController:navBar animated:YES];
current version of my project :
I have 5 different UIViewControllers in my app. I've set my
FirstViewController to be the Initial View Controller using the
Attributes Inspector. I move back and forth from one ViewController to
another by using buttons to which I assign modal segues, from one
ViewController to another, using the StoryBoard
What I want to change:
I want to keep the navigation buttons obviously, delete the modal segues and use
a UINavigationController instead. If I understand the concept
correctly, when using a UINavigationController I need to go into each
UIButton-IBAction and at the very end of the method I have to push the next
ViewController I want to move to, onto my NavigationController (do I also
have to pop the current one first?). However, I can't figure out how
to implement all that correctly.
What I've done so far:
I removed all modal segues from the storyboard and kept the navigation buttons along with their corresponding IBActions
I unchecked the box in the Attributes Inspector that was making my FirstViewController the initial View Controller of my app
I went into my AppDelegate.m and tried to create the Navigation Controller there and make my FirstViewController be the RootViewController
MyAppDelegate.m
-(BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
UIViewController *myFirstViewController = [[FirstViewController alloc] init];
UINavigationController *myNavigationController = [[UINavigationController alloc] initWithRootViewController:myFirstViewController];
[myNavigationController pushViewController:myFirstViewController animated:YES];
// Override point for customization after application launch.
return YES;
}
I then tried to test if the above was working by going into the IBAction of a
navigation button on my FirstViewController and implemented the
following in order to move to my SecondViewController when the
button is pressed :
FirstViewController.m
- (IBAction)goRightButton:(UIButton *)sender
{
// some code drawing the ButtonIsPressed UIImageView on the current View Controller
UIViewController *mySecondViewController = [[SecondViewController alloc] init];
[self.navigationController pushViewController:mySecondViewController animated:YES];
}
but nothing happens. What am I doing wrong ?
You are not linking your XIB file. Please add your navigation controller as
UIViewController *myFirstViewController = [[FirstViewController alloc] initWithNibName:#"FirstViewController" bundle:nil];
navigationController = [[UINavigationController alloc] initWithRootViewController:myFirstViewController];
Use following code to move from one view to another
UIViewController *mySecondViewController = [[SecondViewController alloc] initWithNibName:#"SecondViewController" bundle:nil];
[self.navigationController pushViewController:mySecondViewController animated:YES];
If you are using a storyboard, you should just drag in the navigation controller there and hook it up to your app delegates. As long as it is the main storyboard, and you have identified a view controller to load first, you do not need to load any views in your app delegate.
In order to push a view programmatically that's in a storyboard, you need to do something like the following:
//bundle can be nil if in main bundle, which is default
UIStoryboard *mainStoryboard = [UIStoryboard storyboardWithName:#"MainStoryboard" bundle:nil];
MyCustomViewController *customVC = (MyCustomViewController *)[mainStoryboard instantiateViewControllerWithIdentifier:#"customVC"];
//standard way
[self.navigationController pushViewController:customVC animated:YES];
//custom animation
[UIView transitionWithView:self.navigationController.view duration:0.5 options:UIViewAnimationOptionTransitionCurlUp animations:^{
[self.navigationController pushViewController:customVC animated:NO];
} completion:nil];
You identify the view controller with the identifier you add in the storyboard editor. Below are some screenshots to help show what I mean.
My main menu (a ViewController) is embedded in a NavigationController that I added in the storyboard in Xcode4.
I have a button in my menu, displaying a new view. To display it I use :
- (IBAction) display : (id) sender
{
if(!anotherView) anotherView = [[AnotherView alloc] initWithNibName:#"AnotherView" bundle:nil];
[self presentModalViewController:anotherView animated:NO];
}
My other view is correctly displayed with all its objects and elements. Excluding my NavigationController's bar, that doesn't appear. Why ?
Thanks for your advices
You are presenting the view modally what you probably meant was
[self.navigationController pushViewController:anotherView animated:YES]
of course what you really want to do is not mix and match storyboard and non storyboard flows unnecessarily like this and have the storyboard do this for you
you are presenting your viewController modally. If you want to use the navigation controller you have to push your view onto the navigation stack.
replace
[self presentModalViewController:anotherView animated:NO];
with
[self.navigationController pushViewController:anotherViewController animated:YES];
You can still present your view modally without losing the navigation bar. Try this code:
AnotherView *tempAnotherView = [[AnotherView alloc] initWithNibName:#"AnotherView" bundle:nil];
[self setAnotherView:tempAnotherView];
[tempAnotherView release];
UINavigationController *navController = [[[UINavigationController alloc] initWithRootViewController:self.anotherView] autorelease];
[self.navigationController presentModalViewController:navController animated:YES];
Hope it helps! :)
I have 6 views in which I am placing the UISplitViewController at 4th position (i.e.the 4th view). Now when I navigate from 3rd view to 4th view (i.e. ViewController to SplitView) I want to come back to 4th view to 3rd view (i.e. SplitView to ViewController).
I am using the below code to show the UISplitViewController when I am navigating from 3rd view to 4th view.
MasterViewController *masterViewController = [[MasterViewController alloc] initWithNibName:#"MasterViewController" bundle:nil];
UINavigationController *masterNavigationController = [[UINavigationController alloc] initWithRootViewController:masterViewController];
DetailViewController *detailViewController = [[DetailViewController alloc] initWithNibName:#"DetailViewController" bundle:nil];
UINavigationController *detailNavigationController = [[UINavigationController alloc] initWithRootViewController:detailViewController];
masterViewController.detailViewController = detailViewController;
self.splitViewController = [[UISplitViewController alloc] init];
self.splitViewController.delegate = detailViewController;
self.splitViewController.viewControllers = [NSArray arrayWithObjects:masterNavigationController, detailNavigationController, nil];
AppDelegate *appDelegate = (AppDelegate *)[[UIApplication sharedApplication]delegate];
appDelegate.window.rootViewController = self.splitViewController;
Now I have created a toolbar in my navigation bar programmatically and placed a back button. Below is the code what I have tried to pop the view back to viewcontroller. (i.e. from SplitView to ViewController).
-(IBAction)backbtn:(UIBarButtonItem *)sender
{
// RepresentativeAccount<UISplitViewControllerDelegate> *represent = [[RepresentativeAccount alloc]initWithNibName:#"RepresentativeAccount" bundle:nil];
// //[self.navigationController popToViewController:[self.navigationController.viewControllers objectAtIndex:2] animated:YES];
// [[self.splitViewController.viewControllers objectAtIndex:0]popToViewController:represent animated:YES];
}
Please help thanks.
Reference: View Controller Catalog for iOS
A split view controller must always be the root of any interface you
create.
In other words, you must always install the view from a UISplitViewController object as the root view of your application’s window.
The panes of your split view interface may then contain navigation
controllers, tab bar controllers, or any other type of view controller
you need to implement your interface.
Split view controllers cannot be presented modally.
So, what you are attempting is incorrect, and in fact your app may get rejected by Apple.
I have a view controller that is inside a popover, and I want to present a modal view controller from it. Here's my code:
EditDateViewController *dateViewController = [[EditDateViewController alloc] initWithNibName:#"EditDateViewController" bundle:[NSBundle mainBundle]];
UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:dateViewController];
navController.modalPresentationStyle = UIModalPresentationCurrentContext;
[self presentModalViewController:navController animated:YES];
[dateViewController release];
[navController release];
The result is this:
alt text http://cl.ly/5300e4f8f5d440d3f850/content
For some reason, the navigation bar background is transparent (or black?) even though I did not configure it that way. I tried manually setting the tintColor property of the navigation bar in the viewDidLoad method of the modal view controller, but it had no effect.
Try this
dateViewController.modalInPopover=YES;
self.navigationController.modalInPopover=YES;