I have a UIView with a button on it, when the user clicks that button I have another xib file that I want to push. Now this view doesn't have a navigationcontroller so I create one dynamically like so :
myVC *viewController = [[myVC alloc] init];
UINavigationController *controller = [[UINavigationController alloc]
initWithRootViewController:viewController];
[self presentModalViewController: controller animated: YES];
But this is modal, how can I have myV be pushed from the right?
Thanks.
Try this following format. This will help you.
myVC *viewController = [[myVC alloc] initWithNibName:"myVC" bundle:nil];
viewController.modalTransitionStyle=UIModalTransitionStyleFlipHorizontal;
[[self navigationcontroller] presentModalViewController:viewController animated: YES];
This code is used to flip the new view controller horizondally.
Please refer "UIModalTransitionStyle".
You need edit your appdelegate class and there itself you need to assign your view controller to navigation controller as a root class. Then it will automatically convert all yours view controller to navigation view. Try it out
Initialize View controller
Intitilize UINavigationController root as 1st step view controller
present the nav
Here is the code
let vc = SomeViewController()
let nav = UINavigationController(rootViewController: con)
present(nav, animated: true, completion: nil)
Related
There are similar questions but they are either in swift or are not solving my problem.I've a view controller which is presenting navigation view controller when cell did select button is pressed as:
patientBillNavigationViewController *viewController = [self.storyboard instantiateViewControllerWithIdentifier:#"PatientBillVC"];
//soem value assignment
[self presentViewController:viewController animated:YES completion:nil];
You can say billing opens up a whole new view independent of the main app flow to handle billing process.
The view this navigation View Controller automatically loads is the bill view and now if I want to pass a value from this viewcontroller to the other viewController embedded in navigation view I can't do that. How to pass a value?
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"Main" bundle: nil];
PatientBillViewController *vc = [storyboard instantiateViewControllerWithIdentifier:#"PBVC"];
vc.superBillToAddEdit = sb;
//then display the view embedded in navigation view
But this is not working.
One way I know is to Subclass UINavigationViewController and in its viewDidLoad, you can do:
YourEmbeddedVc *svc =self.viewControllers[0]; //get the controller reference
svc.name= #"Hello";
I'm assuming you are only having one controller in your navigation stack, if not you need to find out the proper match of the required VC.
I might not be understanding the question exactly, correct me if I'm wrong.
It sounds like you want to start a nav controller from a view controller (let's call this firstViewController) and pass a value from firstViewController to the view controller that will eventually load in the nav controller.
If that's the case, why don't you create the second view controller (billingStep1ViewController) and then assign the value to it as a property, then pass the billingStep1ViewController to the nav controller's initWithRootViewController: method?
Something like this (untested code, btw):
// this code would go inside our FirstViewController file
// create the first vc that will be loaded in the nav controller
BillingStep1ViewController *billingStepOneVc = [self.storyboard instantiateViewControllerWithIdentifier:#"stepOne"];
// set the value you want
billingStepOneVc.bill = myBill;
// create new nav controller with step one vc as the root
UINavigationController *uiNavController = [[UINavigationController alloc] initWithRootViewController:billingStepOneVc];
[self presentViewController:uiNavController];
That way you can have two view controllers talking directly with one another and not worry about the navigation controller at all.
Update: Here is some tested code that works to illustrate my idea:
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"Main" bundle:nil];
//create the step 1 view controller - this is the first view controller we will see in the navigation controller
StepOneViewController *stepOneVc = [storyboard instantiateViewControllerWithIdentifier:#"stepOne"];
//assign a value to it (name is an NSString #property of StepOneViewController)
stepOneVc.name = #"Jones";
//this is the nav controller we will display, we set the root vc to our step one.
UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:stepOneVc];
//present the nav controller on screen.
[self presentViewController:navController animated:YES completion:nil];
Some of the class names changed but the idea is the same.
Rather than creating the navigation controller from its storyboard identifier, create it programmatically, with the PatientBillViewController you created as its root view controller. Like this:
UIStoryboard *mainStoryboard = [UIStoryboard storyboardWithName:#"Main" bundle:nil];
PatientBillViewController *pbVC = [mainStoryboard instantiateViewControllerWithIdentifier:#"PBVC"];
pbVC.superBillToAddEdit = sb;
PatientBillNavigationViewController * navVC = [[PatientBillNavigationViewController alloc] initWithRootViewController:pbVC];
[self presentViewController:navVC animated:true completion:nil];
Swift Version
Here is the swift version answer for the above problem!!
let vc = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "PatientBillVC") as! patientBillNavigationViewController
vc.name = "name"
let mVc = UINavigationController.init(rootViewController: vc)
self.navigationController?.present(mVc, animated: true, completion: nil)
I am presenting my view controller like this -
[self.navigationController presentViewController:self.thingContainerViewController animated:YES completion:nil]; //self.navigationController not nil here
This shows a UITableView. I want to push a VC on the navigation stack from here. But the self.navigationController is nil at this point. Any idea how to make this work?
[self.navigationController pushViewController:otherContainer animated:YES]; //self.navigationController is nil at this point
You need to wrap the view controller you are presenting in a navigation controller in order to be able to use the push and pop methods.
So for the first step:
UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:self.thingContainerViewController];
Then:
[self.navigationController presentViewController:navigationController animated:YES completion:nil];
If you do that, your code will work.
Swift 3/Swift 4
first of all you need to set navigation controller on which you want to present.After that do navigation process on your second view controller.
Example like that
let firstPresentVC = FirstVC(nibName:"FirstVC",bundle:nil)
let navVC = UINavigationController(rootViewController:firstPresentVC)
navVC.isNavigationBarHidden = true
self.present(navVC, animated: true, completion:nil)
Now You are on Present Stack With Navigation
You can push after that
let secondPushVC = secondPushVC(nibName:"secondPushVC",bundle:nil)
self.navigationController?.pushViewController(secondPushVC, animated: true)
UIViewController.navigationController means:
The nearest ancestor in the view controller hierarchy that is a navigation controller.
on the other hand, presentViewController makes new view controller out of hierarchy, the new view controller has no navigation controller ancestor unless you assign one to it by [[UINavigationController alloc] initWithRootViewController:self.thingContainerViewController] as #Dima mensioned.
so, the solution is
UINavigationController *targetVCWithNavigationControllerAncestor = [[UINavigationController alloc] initWithRootViewController:self.thingContainerViewController];
[self.navigationController presentViewController:targetVCWithNavigationControllerAncestor animated:YES completion:nil];
then you can push new view controller from self.thingContainerViewController
In my MainStoryBoard I want to push a viewController to the detailView but I get this error:
NSInvalidArgumentException', reason: 'Pushing a navigation controller is not supported'
I set the identifier 'JSA' ID for the viewController on the storyboard.
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
if (indexPath.row == 0) {
SWSJSAViewController *viewController = [[UIStoryboard storyboardWithName:#"MainStoryboard" bundle:nil] instantiateViewControllerWithIdentifier:#"JSA"];
[self.navigationController pushViewController:viewController animated:YES];
}
}
Like rmaddy said in the comments you are trying to push a navigation controller.
Navigation controllers should be presented (via presentViewController or they can be added as a childViewController) and ViewControllers should be pushed.
When you talk about pushing Navigation Controller, it is most likely that you want to present it.
Presenting UINavigationController
This is the most common way and this is what you want to do in most cases. UINavigationController cannot be pushed, it can only be presented with a new root View Controller.
MyViewController* vc = [[MyViewController alloc]
initWithNibName:#"MyController" bundle:nil];
UINavigationController *myNav = [[UINavigationController alloc] initWithRootViewController: vc];
[self presentViewController:myNav animated:YES completion:nil];
What you do here, is firstly create a UINavigationController and then set necessary UIViewController as its root controller.
Pushing UINavigationController
If you have a hierarchy of ViewControllers and you need to push view controller that contains navigation controller within, steps are:
1) Push ViewController, containing UINavigationController.
To push UINavigationController, first create a subclass of UIViewController, which will be a wrapper-/container- class for your UINavigationController and its content.
ContainerViewController* vc = [[ContainerViewController alloc] init];
2) Adding UINavigationController as a child view controller
In viewDidLoad of your container (that you have just instantiated) simply add something like this:
Objective-C
UINavigationController* myNav = [[UINavigationController alloc] initWithRootViewController: rootViewController];
[myNav willMoveToParentViewController:self];
myNav.view.frame = self.view.frame; //Set a frame or constraints
[self.view addSubview:myNav.view];
[self addChildViewController: myNav];
[myNav didMoveToParentViewController:self];
Swift 4.2+
let childNavigation = UINavigationController(rootViewController: viewController)
childNavigation.willMove(toParent: self)
addChild(childNavigation)
childNavigation.view.frame = view.frame
view.addSubview(childNavigation.view)
childNavigation.didMove(toParent: self)
What you do here is basically instantiate your navigation controller and add it as a child controller to your wrapper. That's it. You have successfully pushed your UINavigationController.
How do I add the back button to a navigation bar? I know there are some related questions but none of them helped. I'm not using storyboard nor did I start with the Master Detail template. Is there a setting to do this? or do you add it by code? if so what code do I need? Any help is appreciated! THANKS!
The back button will appear by default if you use a navigationController correctly. The ViewControllers should be this
NavigationController > FirstViewController > SecondViewController
You will need to create navigationController and instantiate with firstVC as the root. From firstVC you can push secondVC and the back button will be there.
The following placed into appDelegate application didFinishLaunchingWithOptions: will load firstVC initially. Place this after you initialize the window...
UIViewController *firstVC = [[UIViewController alloc] initWithNibName:#"firstVC" bundle:nil];
// any setupup of firstVC
UINavigationController *navCon = [[UINavigationController alloc] initWithRootViewController:firstVC];
[self.window setRootViewController:navCon];
Then in your firstVC class if you want to push secondVC
in firstVC.m:
UIViewController *secondVC = [[UIViewController alloc] init];
[self.navigationController pushViewController:secondVC animated:YES];
You don't need to explicitly add a back button. The button will be added automatically when you push controllers into a UINavigationController. That is, a call as:
[navigator pushViewController: controller animated: ...];
creates a back button.
If I have a navigationController which is init with a root view controller MyViewController's instance.
And in that MyViewController's code
I can use
AnotherViewController *vc = [[AnotherViewController alloc] init];
[self presentModalViewController:vc animated:YES];
or
AnotherViewController *vc = [[AnotherViewController alloc] init];
[self.navigationController presentModalViewController:vc animated:YES];
I found these two works the same. Both present the modal view correctly.And I have found that the presented AnotherViewController's "parentViewController" property are all set to the navigation controller.
Why would this happen?the presentModalViewController automatically detect that the self is the subview of the navigation controller and re send the message to navigation controller?
Because MyViewController is the root view controller of the UINavigationController, it gets the convenience method of presentModalViewController: animated: by default. So when you say self.navigationController, it is referring to the same navigationController that presentModalViewController gives you. I think Apple is just trying to make it more intuitive to use the convenience method.