I have three view controllers (vc1, vc2, vc3) and two navigation controllers (nav1, nav2).
nav1 is the entry point of the storyboard.
vc1 is the rootViewController of nav1.
vc2 is the rootViewController of nav2.
nav2 is presented from vc1 through nav1.
Now when I tried to present vc3 from vc2 through nav2, navigation bar is not showing.
You need to present your controller with navigationController.
ViewController *objVC = [self.storyboard instantiateViewControllerWithIdentifier:#"viewcontrollerid"];
UINavigationController *navController = [[UINavigationController alloc]initWithRootViewController:objVC];
[self.navigationController presentViewController:navController animated:YES completion:nil];
Now, the way iOS works, it will never give you an instance of your navigation controller in a presented view controller because when you present a view controller, it is not added to the viewcontroller stack of the navigation controller.
The reason you can see the navigation controller in the other two is because your'e presenting the navigation controller itself and not view controller.
Related
My root navigation has a StoreDetailsController，and I am in the StoreDetailsController present to the ShoppingBagNavigationController.They can be infinite present. What should I do when I want to go back to the root navigation?
- (void)goBagVC{
UINavigationController *shoppingBag = [[UIStoryboard storyboardWithName:#"ShoppingBag" bundle:nil] instantiateViewControllerWithIdentifier:#"ShoppingBagNavigationController"];
ShoppingBagViewController *myshopVC = shoppingBag.viewControllers[0];
[myshopVC passDetailProduct:self.productDetailModel.productID];
[self presentViewController:shoppingBag animated:YES completion:nil];}
- (void)goRootVC{
[self.navigationController.tabBarController setSelectedIndex:0];
[self.navigationController popToRootViewControllerAnimated:YES];}
I want to go root Controller in goRootVC function. Thanks
As ShoppingBagViewController would be your topmost view after you present it, adding a call dismiss(animated: true, completion: nil) to a button press in ShoppingBagViewController would dismiss that screen.
The StoreDetailsController should be visible once the other screen has been dismissed.
It looks to me like you're confusing modal presentation and pushing onto a navigation stack. Your goBagVC method is modally presenting a navigation controller on top of the current view controller. If you want to push view controllers onto a navigation stack then you need to start with a navigation controller and call pushViewController:animated:
You have to search that view controller in yout navigation controller and then pop to that controller.
Swift
let vc = self.navigationController!.viewControllers.filter { $0 is StoreDetailsController }.first!
self.navigationController!.popToViewController(vc, animated: true)
I try to push to specific view controller from app delegate without losing previously set navigation bar and tab bar items setup.
As presented in my Main storyboard:
After 1 action performed in TypeNameVC, on app relaunch I want to skip LogInVC and TypeNameVC in didFinishLaunchingWithOptions in AppDelegate forward to MapViewController or any other VC of Tab Bar Controller.
This code initializes new Navigation Controller with new Navigation Bar and Tab Bar Controller is missing.
UINavigationController *navigationController = (UINavigationController *)self.window.rootViewController;
//To instantiate Main.storyboard.
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"Main" bundle:nil];
//To instantiate VC to go to.
MapViewController *mapVC = (MapViewController *)[storyboard instantiateViewControllerWithIdentifier:#"MapViewControllerID"];
//To push to instantiated VC.
[navigationController pushViewController:mapVC animated:YES];
I tried to performSegue using segue to Tab Bar Controller but on Navigation Controller stack there is only LoginViewController (I checked it with [navigationController viewControllers])
I read through entire Stack Overflow, I made dozens of combinations but I can't figure out the solution. I would appreciate any help/advice.
UPDATED QUESTION
Screen: screen
Have a look to the screen image. First row of screen shows how it looks like if I navigate "normally". Second row shows what happens if I push to MapVC from AppDelegate. What I need is to skip first two VC's with maintaining Navigation and Tab Bar bars setup.
When I navigate "normally" Tab Bar Controller and it's VC's get correctly allocated.
2016-06-08 12:37:44.394 Checkpoint[4196:1034786] Navigation Controller VC's: (
LogInViewController: 0x135d50b00,
TypeNameViewController: 0x135f455b0,
UITabBarController: 0x135f1d180
)
2016-06-08 12:37:44.394 Checkpoint[4196:1034786] Tab Bar Controller VC's: (
MapViewController: 0x137078cf0,
PlacesTableViewController: 0x135f1d7d0,
FriendsTableViewController: 0x137083350
)
When I push directly to MapVC they don't. I do get the point what's going on but I know how to code that solution.
Navigation Controller VC's: (
LogInViewController: 0x15fd5ccf0,
MapViewController: 0x15fd6ffa0
)
2016-06-08 12:31:53.813 Checkpoint[4187:1033755] Tab Bar Controller VC's: (null)
Customize your class MapViewController for visible Navigation Bar and Tab Bar:
- (instancetype)init
{
// init code
self.hidesBottomBarWhenPushed = NO;
retur self;
}
-(void)viewWillAppear:(BOOL)animated
{
// some code
[self.navigationController setNavigationBarHidden:NO];
}
I have a tabbar application and I would like to add navigationcontroller to a non-rootviewcontroller.
Is it possible?
Thanks for any help.
UPDATE 23:10 GMT+2
UINavigationController is a subclass of UIViewController, as such you can present it or you can add its view as a subview (assuming you then don't release the UINavigationController instance itself which would have interesting side effects).
What you can't do is to push the navigation controller into some of the provided container view controllers. Like pushing a navigation controller into another navigation controllers stack.
Each Tab in Tab Bar Controller can have a custom view controller. Where your custom view controller can be a navigation controller.
But, in a navigation controller, if you wish to add a navigation controller on lets say tap of a tableview cell, you will have to present it modally on navigation controller. You can not push a navigation controller into another navigation controller.
for eg.
Instantiate your root view controller for the navigation controller you wish to present
YourAnotherRootVC *anotherVC = [[YourAnotherRootVC alloc] initWithNibName:#"YourAnotherRootVC" bundle:[NSBundle mainBundle]];
Instantiate UiNavigationController
UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:anotherVC];
Present it to current navigation controller.
[self.navigationController presentModalViewController:navController animated:YES];
In my application 2 tabs are there. I am adding tabbarController to the window with two view controllers viewcontroller1 and viewcontroller2 in didFinishLaunchingWithOptions. Now I need to add a button in the viewcontroller1 and in the button action i need to push a new viewcontroller nextViewController. To do this in the button action, i had created a navigation controller and sets its rootview controller as viewcontroller1 and then i push the nextViewController through that navigation controller. But the nextViewController is not getting loaded. Why?
(void) buttonAction {
UINavigationController *navController=[[UINavigationController alloc]initWithRootViewController:self];
nextViewController *nextViewControllerObj = [[nextViewController alloc]init];
[self.navigationController pushViewController:nextViewControllerObj animated:YES];
}
Instead of adding first tab view controller into UINavigationController, please try adding main UITabBarController into UINavigationController in "didFinishLaunchingWithOptions".
I'm trying to get working a simple operation. At least it seems simple. Ok, what I'd like to do is to push a view (with push view controller) from a view that has been pushed with modal view controller.
View1 --(push using modal view controller)-->View2--(push using push view controller)--View3.
Rigth now, i'm doing tests so i'm using a button to start the action. Here's the code I use to push from View2 to view 3:
//view2.h
UIToolbar *bar;
UIBarButtonItem *button;
UIToolbar *toolbar;
}
- (IBAction)demissModal:(id)sender;
- (IBAction)goView3:(id)sender;
#end
//view2.m
- (IBAction)goView3:(id)sender{
View3 *view_3 = [[View3 alloc] initWithNibName:#"View3" bundle:nil];
[self.navigationController pushViewController:view_3 animated:YES];
}
This is the same code I use to push View1 to View2, and it works. But when pushing View2 to View3, it's not working. Any idea of why happens that? Thanks!
View Controllers aren't actually 'modal' or 'push' view controllers. Modal or Push describe a transition between view controllers (called segues if you're using storyboards).
What I think you're asking is how to modally present a view controller, and then push another controller. The trick is when you modally present view controller #1, to actually present a navigation controller with its root view controller set as view controller #1.
MyViewController *myViewController = [MyViewController alloc] init];
UINavigationController *navController = [UINavigationController alloc] initWithRootViewController:myViewController];
// Presuming a view controller is asking for the modal transition in the first place.
[self presentViewController:navController animated:YES completion:nil];
// Now in myViewController, call [self.navigationController pushViewController:secondViewController animated:YES];
This is what it looks like using storyboards:
First of all, I'm not sure where that gegant_se is coming from.
Second of all, if you're pushing view2 from view1 the same way you're pushing view3 from view2, you're not using a modal.
Whenever you use a navigation controller to push a view controller, that view controller that was just pushed has a reference to the navigation controller, through the navigationController property. Try this:
[self.navigationController pushViewController:view_3 animated:YES];
Try this:
[self.navigationController pushViewController:view_3 animated:YES];
try this code AlarmList is view name .
AlarmListScreen *loscr=[[AlarmListScreen alloc]initWithNibName:nil bundle:nil];
[self.navigationController pushViewController:loscr animated:YES];
[loscr release];