I have a navigation controller which present one modal viewController. From inside this modal viewController I present another modal viewController. All I want is to get back from the last modal viewController to the navigationController (the root viewController).Something similar with popToRootViewController, but adapted for modalViewControllers;
NavigationController -> present Modal ViewController A -> present Modal ViewController B
From modal ViewCOntroller B I want to return to navigationCOntroller.
Is this possible?
Appreciate,
Alex.
In iOS 5 you need to do
[self.presentingViewController.presentingViewController dismissModalViewControllerAnimated:YES]
Edit: As of iOS 6 dismissModalViewControllerAnimated: is deprecated.
You need to call
[self.presentingViewController.presentingViewController dismissViewControllerAnimated:YES completion:^{ // Do something on completion}]
Problem solved :)
I tried
[self.parentViewController.parentViewController dismissModalViewControllerAnimated:YES];
and works.
Thanks.
Related
I have seen this topic (iOS Storyboard Back Button) and more about this subject, but I still cannot have my back button appear on screen :
I have got 2 viewControllers, the two of them have a navigationController, the "father" controller has the button bar item set to "back" as a plain text, the second viewController appear well with a modal segue, or with "show detail (replace)" segue, but nothing appear on the navigation bar to come back... Would you know why?
Here is a capture :
Thanks
EDIT :
with a custom transition, and when presenting the controller via the navigator in the code, the back button is not here anymore... would someone know why?
When I comment out presentViewController:secondViewController, the back button is here, but the custom animation is not triggered anymore, there is the normal transition set in the storyboard.
Here is my method :
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender{
NSLog(#"segue descr %# : ", [[sender class] description] );
if ( [[segue identifier] isEqualToString:#"second"] ){
//SecondViewController *secondViewController = [[UIStoryboard storyboardWithName:#"Main" bundle:nil] instantiateViewControllerWithIdentifier:#"SecondViewController"];
SecondViewController *secondViewController = [segue destinationViewController];
secondViewController.transitioningDelegate = self;
[self.navigationController presentViewController:secondViewController
animated:YES
completion:nil];
Modal and show detail segues don't use a back button, because they are like independent views.
The idea is that those those views are only showing extra information or details about something and you can close them programmatically when you need to go back to the previous view.
A show or push segue will give you the back button in your navigation controller, because that segue is meant to be more like a sequence of views.
When you push a View Controller, you get the back button for "free" without having to write extra code. When you present a modal View Controller, you need to add your own way of dismissing the modal view. Since you have a Navigation Controller, your easiest route is probably to add a UIBarButtonItem to the navigation bar, and have that bar button call dismissViewControllerAnimated:completion: in your UIViewController subclass.
How to remove the transition effect from a modal segue when displaying the modal like this:
[self performSegueWithIdentifier:#"SomeIdentifier" sender:self];
I know I can go into the storyboard and toggle between 4 different animations but I don't want any! How do I remove them?
I know I could say presentModalViewController animated: NO but I do not and can not call it this way. I need to use the performSegueWithIdentifier method.
In the storyboard you can select your segue and in the Attributes Inspector uncheck "Animates". That should do it.
Here's the full source of a no-animation segue:
BVNoAnimationSegue.h
#import <UIKit/UIKit.h>
#interface BVNoAnimationSegue : UIStoryboardSegue
#end
BVNoAnimationSegue.m
#import "BVNoAnimationSegue.h"
#implementation BVNoAnimationSegue
- (void)perform
{
[[self sourceViewController] presentModalViewController:[self destinationViewController] animated:NO];
}
#end
To use this, add the files to your project (e.g. as BVNoAnimationSegue.m/.h) then in storyboard, select 'Custom' as your Segue type and type BVNoAnimationSegue in the Segue Class box. After you've done this Xcode seems to be clever enough to add 'no animation segue' as an option when you CTRL-drag between UIViewControllers in future.
You need to make a custom segue (without the animation) if you need a segue but don't want the animation.
You should look at Apples "creating custom segues" example in the view controller programming guide, they do a custom modal segue without an animation (just like you wanted).
One more way we can
YourViewController *aYourViewController = [self.storyboard instantiateViewControllerWithIdentifier:#"aYourViewControllerIdentifier"];
[self.navigationController pushViewController:aYourViewController animated:NO];
and add the #"aYourViewControllerIdentifier" to view controller in your storyboard.
The start of the structure is as follows...
UITabBarController -> UINavigationController(s)
From each of the UINavigationControllers, I have a UIBarButtonItem that modally presents a UIViewController.
This UIViewController has a MKMapView with pins at multiple locations. When clicked, they display an annotation with a disclosure button.
Within this UIViewController, it is my intention to push a detail page (UITableViewController) when pressing the disclosure button of the annotation. The method calloutAccessoryControlTapped: receives the appropriate pin, but the transition to the next controller fails.
I have tried every combination of the following methods...
[self.navigationController ...]
[self.parentViewController ...]
[self.parentViewController.navigationController ...]
with the method being either...
presentModalViewController:
pushViewController:
I have done all of these with the UIViewController being on its own, and also with it embedded inside of a UINavigationController.
All of these properties return null...
self.navigationController
self.parentViewController
self.parentViewController.navigationController
This is the first time I've used storyboard for an Xcode project. Am I missing a step?
Try getting rid of the code and implementing the transitions in storyboard by control dragging from the button to the view controller you wish to load modally. When the "Storyboard Segue" menu pops up select "modal". In the modal view controller, I like to use code to return from the modal by calling:
[self dismissModalViewControllerAnimated:YES];
To Presenting Storyboard View Controllers Programmatically scroll to that section in gravityjack on the link provided.
For example, I have a view controller that I created in storyboard which I can call programmatically with the following two statements:
SettingsViewController *settingsVC = [self.storyboard instantiateViewControllerWithIdentifier:#"settingsVC"];
[self.navigationController pushViewController:settingsVC animated:YES];
I have an app delegate, whose default view should be preceeded by a modal view controller, and sometimes by two modal view controllers. So in the app delegate's didFinishLaunchingWithOptions, I'm checking if there is need for, and in that case displays, the first modal view controller.
Upon dismissing the first modal view controller (using [self dismissModalViewControllerAnimated:YES];), I may want to display the second modal view controller. This is known by the app delegate as well.
So my solution was to use NSNotificationCenter to tell the app delegate that the first modal view controller now have been dismissed. When that happens, the second modal view controller can be displayed by the app delegate, if it is needed.
It works fine, but is there a cleaner solution? I think NSNotificationCenter is really ugly stuff.
Note on displaying multiple modal view controllers at once
I did try to display the first AND the second modal view controller inside of didFinishLaunchingWithOptions, but I never got it working. Here's what I tried:
- (BOOL)application:(UIApplication *)application
didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
[window setRootViewController:tabBarController];
[self.window makeKeyAndVisible];
[tabBarController presentModalViewController:pinViewController animated:NO];
if([self needsActivation]) {
[tabBarController presentModalViewController:activationViewController
animated:YES];
}
}
UPDATE: The above code works with the following correction:
if([self needsActivation]) {
[pinViewController presentModalViewController:activationViewController
animated:YES];
}
In this particular case, there was no need for NSNotificationCenter, as I thought. I had tried to display multiple modal view controllers, but I'd made an error.
When displaying the modal view controller B from the modal view controller A, it works fine. I had tried presenting modal view controller A and B from a parent view controller.
So when presenting modal view controllers in a hierarchy instead, there is no need for NSNotificationCenter. The view controllers are dismissing themselves, animations works and I'm a step further towards bending the UIKit to my will.
I've edited the code in my question, which now works fine.
I'm pushing a number of views:
the top one is a UITabBarController
the second one is a UINavigationController with a pushed view
the third one is a modal box.
Once the close button in the modalbox is pressed I'm trying to revert everything to the default state and change the tabbar index.
[self dismissModalViewControllerAnimated:YES];
[self.navigationController popViewControllerAnimated:NO];
[self.tabBarController setSelectedIndex:3];
This dismisses the modal view but doesn't do anything else. Any ideas what could be wrong? I read something about a possible ios bug but I don't know how to work around it.
Neither UITabBarController nor UINavigationController is a view. Both are subclasses of UIViewController and have a property NSArray *viewControllers.
If you have an actualView controlled by an ActualViewController that is pushed on top of a rootView controlled by a RootViewController that is the rootViewController for the navigationController, and you also have a modalView controlled by a ModalViewController, then put
[self dismissModalViewControllerAnimated:YES];
in ModalViewController.m, and put
[self.navigationController popViewControllerAnimated:NO];
in ActualViewController.m (from whence modalView is pushed, presumably), and put
[self.tabBarController setSelectedIndex:3];
in RootViewController.m (from whence actualView is pushed, presumably).
If modalViewController was never added to the navigationController, then it doesn't know that the navigationController exists.
If actualViewController was never added to the tabBarController, then it doesn't know that the tabBarController exists.
The easy (and dirty) way:
Dismiss the modal view in the modal view. Make the navigation view controller the delegate of the modal view. Make the tabbar controller the delegate of the navigation controller. When the button is pressed call a method in the navigation controller that pops the view and calls a method of the tabbar controller which changes the selected tab.