I am working application in which i calling presentModalViewController and once finished(calling dismissModalViewControllerAnimated:YES) it should immediately call popToRootViewControllerAnimated.
But the issue is dismissModalViewControllerAnimated:YES is working properly but popToRootViewControllerAnimatedis not working after it.
The code is shown below:
[self.navigationController dismissModalViewControllerAnimated:YES] ;
[self.navigationController popToRootViewControllerAnimated:YES];
Try something like this:
[self.navigationController dismissModalViewControllerAnimated:YES] ;
[self performSelector:#selector(patchSelector) withObject:nil afterDelay:0.3];
-(void)patchSelector{
[self.navigationController popToRootViewControllerAnimated:YES];
}
It is not so neat but it should work.
UPDATE:
You should use
[self dismissModalViewControllerAnimated:YES];
instead
[self.navigationController dismissModalViewControllerAnimated:YES] ;
The object that is presenting the modal is the view controller, not the navigation controller.
If you have a navigation controller with a stack of UIViewControllers:
[self dismissModalViewControllerAnimated:YES];
[(UINavigationController*)self.parentViewController popToRootViewControllerAnimated:YES];
//UIViewController *vc = [[UIViewController new] autorelease];
//[(UINavigationController*)self.parentViewController pushViewController:vc animated:YES];
Assumes, that view controller in which called modal view controller has navigationController.
I ran into something similar to this. You need to make a copy of your self.navigationcontroller first and also retain yourself, so when you call the second pop, there is still a reference to the NC and you still exist.
// locally store the navigation controller since
// self.navigationController will be nil once we are popped
UINavigationController *navController = self.navigationController;
// retain ourselves so that the controller will still exist once it's popped off
[[self retain] autorelease];
// Pop this controller and replace with another
[navController popViewControllerAnimated:NO];
[navController pushViewController:someViewController animated:NO];
see : How can I pop a view from a UINavigationController and replace it with another in one operation?
I guess, you are not calling the
[self.navigationController popToRootViewControllerAnimated:YES];
in the target modal viewcontroller. check that.
Related
In my AppDelegate I have the following code which is executed after receiving a notification:
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"Main" bundle:nil];
UINavigationController *navigationController = (UINavigationController *)[storyboard instantiateViewControllerWithIdentifier:#"VideoPlayback"];
VideoPlaybackViewController *videoPlaybackViewController = (VideoPlaybackViewController *)[navigationController topViewController];
videoPlaybackViewController.publishing = YES;
[(UINavigationController*)self.window.rootViewController pushViewController:navigationController animated:NO];
That successfully brings up the new ViewController and apparently adds it to the navigation stack, since I can use the back button on the navigation bar to go back and subsequently dismiss the view controller.
The problem is, I don't want to use the navigation bar. In fact, I would like to hide the back button. Unfortunately, when I try to dismiss the viewcontroller using the method(s) it should use, it does nothing. I've tried using both of these to dismiss the view controller:
[self dismissViewControllerAnimated:YES completion:nil];
[self.navigationController popViewControllerAnimated:YES];
What am I doing wrong? Thanks.
You're trying to push a navigation controller into a navigation controller, which won't end well.
[(UINavigationController*)self.window.rootViewController pushViewController:navigationController animated:NO];
probably needs to be changed to:
[(UINavigationController*)self.window.rootViewController pushViewController:videoPlaybackViewController animated:NO];
I'm new on IOS platform and after study a little about how does it works, i had one doubt about how to call a new class/view and overlay the current view when a button is pressed. In android i do:
Intent intent = new Intent(a.class, b.class);
startActivity(intent);
Searching on internet, i noticed that i have to use navigation bars to do it. I start an app with tab bar controller and putted a navigation controller. I used the code below:
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"Storyboard" bundle:nil];
UIViewController *myController = [storyboard instantiateViewControllerWithIdentifier:#"Dicas"];
[self.navigationController pushViewController: myController animated:YES];
and the return:
There is a way to overlay the current view? I always have to use navigation bars to call another class (use bottom e upper controllers will make my app ugly)?
To hide the navigation bar:
[[self navigationController] setNavigationBarHidden:YES animated:YES];
To hide tab bar:
yourViewController.hidesBottomBarWhenPushed = YES;
You can also call another viewController by using presentViewController function of a viewController class.
[self presentViewController: myController animated:YES completion:nil];
As you said u want to overlay your current view so not sure but You can show your view controller using model view like this
yourViewController *secView = [[YourViewController alloc] initWithNibName:#"YourViewController" bundle:nil];
[secView setModalPresentationStyle:UIModalPresentationPageSheet];//u can use different UIModalPresentationStyle
[secView setModalTransitionStyle:UIModalTransitionStyleCoverVertical];
[self.navigationController presentViewController:secView animated:YES completion:nil];
Above one will show your view controller over existing view controller, once presented you need to make provision to dismiss this modal view.
Simple way to present new class or ViewController like this..
ViewController *view = [self.storyboard instantiateViewControllerWithIdentifier:#"ViewController"];
[self presentViewController:view animated:YES completion:nil];
I have simple application with only one main view, which has 'Settings' button, and settings are tree-grouped, so I wand to present them in navigation controller. And I don't want navigationController in main view, because I don't want navigation bar there.
That's why I don't instantiate navigationController in application: didFinishLaunchingWithOptions:. And when I check self.navigationController in 'Settings' button handler, it returns nil.
So I wrote this: (I use ARC)
- (void)doSettings
{
NSLog(#"%#", self.navigationController); // prints nothing
SettingsViewController *settingsViewController = [SettingsViewController alloc] initWithStyle:UITableViewStyleGrouped];
UINavigationController *navigationController = [[UINavigationController alloc] init];
[self.view.window setRootViewController:navigationController];
[navigationController pushViewController:settingsViewController animated:YES];
}
This works, although it pushes settingsViewController without animation (don't know why).
Is this generally the correct way to do - to change rootViewController in the middle of running app?
And if yes - than when I'm done with Settings, I probably need to set rootViewController back to current viewController, as it was before I tapped 'Settings'?
I think you want to create a navigation controller that you will present modally; the following will do:
SettingsViewController* settingsViewController = [[SettingsViewController alloc] initWithStyle:UITableViewStyleGrouped];
UINavigationController *navigationController = [[UINavigationController alloc] init];
[navigationController pushViewController:settingsViewController animated:YES];
[self presentViewController: navigationController animated: YES completion:nil];
where self here is the view controller you want to trigger the modal view controller from.
since you present modally the navigation controller you can dismiss it within the code source of your settingsViewController by accessing its navigation controller:
[self.navigationController dismissViewControllerAnimated:YES completion: nil];
To answer your question setting the rootViewController is not the correct way. Present the new vc modally through the presentViewController method.
A better way is to build the navigation vc and present it over your main vc (not replace your main vc).
- (void)doSettings
{
NSLog(#"%#", self.navigationController); // prints nothing
SettingsViewController *settingsViewController = [SettingsViewController alloc] initWithStyle:UITableViewStyleGrouped];
UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController: settingsViewController];
[self presentViewController: navigationController animated:YES completion:^{}];
}
Your main vc might realize (maybe as a delegate) that the settings flow is complete. It can then dismiss the presented navigation controller with:
- (void)dismissViewControllerAnimated:(BOOL)flag completion:(void (^)(void))completion
Alternatively, the setting flow could dismiss itself...
// somewhere in the settings vc or a vc it pushes, when we decide settings are done
self.navigationController dismissViewControllerAnimated:YES completion:^{}];
Have navigation in main view and have below line (which will hide navigation bar)
[[self navigationController] setNavigationBarHidden:YES animated:YES];
(I would say have this in viewWillAppear and viewDidLoad both, BUT in viewWillAppear is MUST).
Now in second view, to show navigation bar
[[self navigationController] setNavigationBarHidden:NO animated:YES];
Hope this will solve your problem...
In my app i present a UINavigationController modally with a UIViewController as its rootViewController. I do it in form style. I added a second UIViewController which is also in form style and i can push to it fine. However when i perform a popViewController action after the second UIViewcontroller gets popped onto the first, the whole modally presented UIViewController gets dismissed. However i don't perform any dismissing and the dismissing function doesn't get triggered by accident either.
Any ideas why it's happening?
Sincerely,
Zoli
EDIT:
That's how i'm presenting the modal viewcontrollers with a navcontroller:
if(!welcomeScreenAlreadyPresented) {
welcomeScreenViewController = [[WAWelcomeViewController alloc]init];
}
welcomeScreenNavController = [[UINavigationController alloc]initWithRootViewController:welcomeScreenViewController];
[welcomeScreenNavController setModalTransitionStyle: UIModalTransitionStyleCrossDissolve];
[welcomeScreenNavController setModalPresentationStyle:UIModalPresentationFormSheet];
[welcomeScreenNavController setNavigationBarHidden:YES animated:NO];
[self.navigationController presentViewController:welcomeScreenNavController animated:YES completion:nil];
That's how i'm navigation in WAWelcomeViewController.m
registerViewController = [[WARegisterViewController alloc]init];
[self.navigationController pushViewController:registerViewController animated:YES];
And in WARegisterViewController.m that's how i pop back
[self.navigationController popViewControllerAnimated:YES];
What you need to do is put the viewController you want to push inside another UINavigationController.
registerViewController = [[WARegisterViewController alloc]init];
UINavigationController *modalNavigationController = [[UINavigationController alloc] initWithRootViewController:registerViewController]; // autorelease if you are not using ARC
[self presentViewController:navController animated:YES completion:^{}];
You might want to add the modalNavigationController as a property to later call popViewControllerAnimated: on it.
If i use
NGViewController *ngView = [[NGViewController alloc]initWithNibName:Nil bundle:Nil];
[self presentViewController:ngView animated:NO completion:nil];
above code the controller will go to NGViewController page.
But if I use this navigation controller
NGViewController *ngView = [[NGViewController alloc]initWithNibName:Nil bundle:Nil];
[self.navigationController pushViewController:ngView animated:YES];
the Controller will be in same page.
Can any one tell that what's the problem.
You should use this code
NGViewController *ngView = [[NGViewController alloc]initWithNibName:Nil bundle:Nil];
[self presentViewController:ngView animated:NO completion:nil];
after writting this line when then you you want go on different page with push view controller
UINavigationController *navigationController = [[UINavigationController alloc]initWithRootViewController:ngView];
[self.navigationController pushViewController:navigationController animated:YES];
I hope you will solve this issue by this code Good luck
Your self.navigationController is probably nil - check it out through debugging. Your self view controller is not within a UINavigationController.
Now i m using this code
NGViewController *ngView = [[NGViewController alloc]initWithNibName:Nil bundle:Nil];
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration: 0.50];
[self presentViewController:ngView animated:NO completion:nil];
so that it wil give same effect other
Self Controller should have navigation controller (in Storyboard) in order to navigate.
[self.navigationController pushViewController:nextController animated:YES];
UINavigationController is a controller of controllers and it is designed to allow you to push and pop controllers and manage a hierarchy of your view's. And your navigationController property tells you whether your NGViewController is currently in a UINavigationController's hierarchy; if not (as in this case), the navigationController property returns nil.
You have to create your own navigation controller and then try to push the view controllers and thus build up a view hierarchy.
I normally would suggest this:
UINavigationController *navigationController = [[UINavigationController alloc]initWithRootViewController:firstviewController];
[self.window setRootViewController:navigationController];
navigationController.delegate = self;
navigationController.navigationBarHidden = YES;
you need to declare this in your first controller
NGViewController *ngView = [[NGViewController alloc]init];
[self.navigationController pushViewController:ngView animated:YES];