I am sort of newbie in Three20 world, and I am trying to hide the back/left button in navigation bar.
Below is the method I am calling to hide it:
[[TTNavigator navigator].topViewController.navigationController.navigationItem setLeftBarButtonItem:nil animated:YES];
[[TTNavigator navigator].topViewController.navigationController.navigationItem setHidesBackButton:YES animated:YES];
Apparently, both the methods doesn't hide the back button. What I am here trying to do is, push the viewcontroller, and when the new controller arrives it doesn't show the back button, yet I had another button there which pop's the view.
I have also tried different routes as:
[VC.navigationController.navigationItem setHidesBackButton:Yes];
The funny part is I am about to set the Title though as:
[VC.navigationItem setTitle:#"Options"];
Any help here will be really appreciated. Thanks.
Try here: Crappy iOS APIs – UINavigationController
Notice that Rafael does this in the new controller, not in the controller which does the push.
self.navigationItem.hidesBackButton = YES;
It works for me.
Dave
Related
I have a Navigation controller in a storyboard, currently with two screens. Screen1 contains an opening logo and some buttons, and I have hidden the navigation bar at the top using:
[[self navigationController] setNavigationBarHidden:YES];
in viewDidLoad and viewWillAppear: (in viewWillAppear I have it set with animated:YES, so it slides off when coming back from other screens).
When I go to Screen2, I have:
[[self navigationController] setNavigationBarHidden:NO animated:YES];
in the first view controller's viewWillDisappear, and the navigation bar slides in all nicely when that view comes on to the top of the navigation stack.
Problem is, when I tap back, the navigation bar animates off the right side of the screen, but Screen2 stays there, revealing another navigation bar underneath!
I can then tap back again and it will push Screen2 off and the main screen shall return, but this is not behaviour I want to pass on to any users, obviously!
Anyone had this issue before, or have any points on what might be the culprit?
Edit: I just found an error appearing when I run the iOS Simulator:
2011-11-02 19:29:13.548 TestHTML5[10261:f803] Unbalanced calls to begin/end appearance transitions for <LessonViewController: 0x6c5e960>.
This happens when I click the button to go the the second view (LessonViewController).
Hopefully that might be the thing to crack this, anyone know?
I found my IBActions, which contained:
SecondViewController *X = [self.storyboard instantiateViewControllerWithIdentifier:#"X"];
[self.navigationController pushViewController:X animated:NO];
on each were causing the view to double up or something like that. When I commented these two lines out in each IBAction, the problem disappeared.
Thanks heaps to #CodaFi for helping me through possibilities for this, to be honest, this solution doesn't make sense to me, even thought I can see it working here.
The UINavbarcontroller will go back to the previous VC when i press the Left button on the NavBar. Works as expected.
I also need to force the screen to go back from another button, so was wondering is there something i can call to make this happen? I dnt see any method attached to UINavbarController docs for this.
try popViewController:
[self.navigationController popViewControllerAnimated:YES];
Try looking at the UINavigationController docs instead, it's the fourth of 8 instance methods:
popViewControllerAnimated:
Pops the top view controller from the navigation stack and updates the
display.
- (UIViewController *)popViewControllerAnimated:(BOOL)animated
I'm writing my first iPhone app and I am trying to figure out how to have a MasterView and DetailsView like in the example. However, instead of using a TableView, I want to use a button on the MasterView to go to the SignUpView. I want the MasterView to NOT have a navigation bar but the SignUpView needs to have one.
I have tried putting a NavigationController into the MasterView using the interface builder. This doesn't seem to do anything at all ... I.e. I make the following call:
[self.navigationController pushViewController:signUpViewController animated:YES];
And nothing happens. The SignUpView is never shown.
So then I declared a NavigationController in the AppDelegate. The above call in the same function that it was in before (button handler, button is in MasterView) works now! It takes me to the SignUpViewController.
however, the issue is, when I press back on the navigation bar in the sign up view, the navigation bar shows up again in the MasterView. I tried to set
self.navigationController.navigationBarHidden = YES;
in viewDidLoad and viewDidAppear, but that causes a black bar to appear in the transition from SignUpView to MasterView.
I tried to not set it in one of the two, and that causes the animation to go smoothly, but the navigation bar shows up in the MasterView.
I feel like this should be pretty simple to do ... but I'm at my wits end trying to figure this out. Some help would be really appreciated!
Thanks.
Probably not the answer to your question, but just a small suggestion. In the many apps that I have come across, a sign-up/sign-in view is generally displayed as a modal view (on top of your master view) with a 'cross' in the top-right corner to dismiss it. Probably it results in a better user experience.
Also, did you try self.navigationController.navigationBarHidden = YES; in the MasterView's viewWillAppear ?
HTH,
Akshay
I had this problem too, until I discovered setNavigationBarHidden. You will probably want to use these in viewWillAppear/viewWillDisappear or viewDidAppear/viewDidDisappear. You don't want to call this in viewDidLoad because that is only called once when the view is initialized, not every time it appears.
To hide:
[self.navigationController setNavigationBarHidden:YES animated:YES];
To show:
[self.navigationController setNavigationBarHidden:NO animated:YES];
This is the situation:
I have a tab bar with 2 tabs. Tab01 and Tab02.
In Tab01 I have a button which pushes repVC:
repVC.modalTransitionStyle = UIModalTransitionStyleCoverVertical;
[self presentModalViewController:repVC animated:YES];
[(UIViewController *)[tabController.viewControllers objectAtIndex:0] setView:repVC.view];
[repVC release];
Inside repVC I have another button which pushes an MFMailComposerViewController:
MFMailComposeViewController *mail = [[MFMailComposeViewController alloc] init];
[self presentModalViewController:mail animated:YES];
[mail release];
The problem is: when mailView is shown(in Tab01) and I click Tab02, then back to Tab01, the mailView is hidden and even if I click the email button again, the view won't be presented.
So what I have is: Tab01.view -> repVC.view -> mail.view
For repVC, I use this line when I push the view so that even if I go switch tabs, that view will still be activated:
[(UIViewController *)[tabController.viewControllers objectAtIndex:0] setView:repVC.view];
But I can't do the same for mail because tabController is declared in another class which I cannot import. So I can't access the tabController and set the view for Tab01.
Hope the edit helped the understanding.
Hmm,
I still would suggest to use a Navigationcontroller. Would make things way easier, is conform to apple guidelines and suggestions and is pretty fast implemented. (Just create a Navigationcontroller, put the View of Tab1 as main view and hand it over to the TabbarController. Then for the mailView use [self.navigationController pushViewController:mail animated:YES]; Then the navcontroller "saves" the present view for you when u switch tabs)
But if for some Reason you have to use a modalViewcontroller you could either just deactivate the tabbar while the ModalView is shown or try to implement a switch or a simple if...else case in your ViewWillAppear where u check what screen to load.
Then Clean out the Window and load the right screen.
Hope you get the idea of what I mean, sometimes my way of writing seems to confuse people. ^^
A little more information would be great.
How did u set up your TabbarController?
How do u push the new view? Within a UINavigationController? If not, then do it with a navController, he should save the actual state of view and your problem should be solved.
If u already use a navController please post your ViewDidLoad and ViewWillAppear of the Viewcontroller of Tab 1
As #Amandir points out you could probably solve your problems by using a UINavigationController. I get a feeling that you are trying to abuse the modal view controller concept a bit and that's why it doesn't work as you expect. When you use presentModalViewController:animated: the intention should be that you are displaying a view that is modal, i.e. the user must interact and dismiss the modal view before she can continue.
What the paragraph above means that when you present a modal view controller it shouldn't be possible to use the tab bar. Since you are using the word push I'm guessing that you would like change the view of Tab01 while still being able to use the functionality of the tab bar. The problem is that there isn't any built-in method of pushing view controllers besides UINavigationController. persentModalViewController:animated: should only be used in case where you want a modal view, which on the iPhone means a full screen view.
The easiest way would probably be to use an UINavigationController and hide the navigation bar. Then you would get the functionality I think you are after. The other option is to manually add and remove sub views.
[self.view addSubview:repVC.view];
and
[repVC.view removeFromSuperview];
[self.view addSubview:mail.view];
You can use block animations if you want some fancy transitions.
I am trying to get the same functionality as contacts app in iphone. The problem is following , when i hide navigationbar using following command
[self.navigationController setNavigationBarHidden:YES animated:YES]
It gets hidden throughout all viewControllers in navigationController stack.
I am implementing search in my application pretty much the same way it is in Contacts app. When user touches search field it hides navigationBar, but when user selects item from table view transition I want it to stay hidden in rootViewController and to be visible in pushed viewController.
I was thinking about completely hiding navigationControllers navigationBar and placing my own navigationBar, but i am not sure is it right direction to take.
add following code tot the desired view controller, and it will work fine
- (void) viewWillAppear:(BOOL)animated{
[[self navigationController] setNavigationBarHidden:NO animated:YES];
}
hope it helps.