I have a problem about the navigation bar.
I have ViewControllerA with a hidden NavigationBar. I have set the navigationBar hidden using the code below:
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
[self.navigationController setNavigationBarHidden:YES animated:animated];
}
-(void)viewWillDisappear:(BOOL)animated
{
[super viewWillDisappear:animated];
[self.navigationController setNavigationBarHidden:NO animated:animated];
}
I push ViewControllerA and then ViewControllerA again. But NavigationBar will appear when I go back to First ViewControllerA by using system gesture.
I hope I can get some ways to solve this problem. Thanks.
You're almost there, hide it in ViewControllerA and then show it in ViewControllerB, don't show it when ViewControllerA will disappear. The below code is all you need, good luck.
ViewControllerA:
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
[self.navigationController setNavigationBarHidden:YES animated:animated];
}
ViewControllerB:
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
[self.navigationController setNavigationBarHidden:NO animated:animated];
}
Dear First You are set Navigation bar hidden at Navigation Controller Property (Storyboard->Click Navigation Controller->Property) and You want Navigation Bar in any View Controller Scene so your are add this code in .m file of view controller.
-(void)viewWillAppear:(BOOL)animated{
[self.navigationController setNavigationBarHidden:YES animated:animated];
[super viewWillAppear:animated];
}
Related
I have a HomeViewController and it has a property searchViewController.
HomeViewController is the delegate of searchViewControllerDelegate so that I can pop searchViewController when I click a button in searchViewController.view (I use pushViewControllerAnimated: to push searchViewController into view controller stack.
I want to show the navigationBar when the searchViewController is popped up.
However
[self.navigationController.navigationBar setHidden:NO];
is definitely not working.
I've checked that the navigationBar is not nil so I can't figure out what the problem might be.
actual code
#pragma mark - HomeTabSearchTableViewDelegate
-(void)parentViewControllerPop{
[self.navigationController popViewControllerAnimated:YES];
[self.navigationController.navigationBar setHidden:NO];
}
searchViewController is popped up successfully, just the navigationBar problem.
on your HomeViewController
-(void)viewWillAppear:(BOOL)animated{
[super viewWillAppear:animated];
[self.navigationController setNavigationBarHidden:NO]; //shows
//or use like
// [[self navigationController] setNavigationBarHidden:NO animated:YES];
}
-(void)viewWillDisappear:(BOOL)animated{
[super viewWillDisappear:animated];
[self.navigationController setNavigationBarHidden:YES]; // hides
//or use like
// [[self navigationController] setNavigationBarHidden:YES animated:YES];
}
This bug was firstly found in iOS 7, and it can be reproduced in iOS 8 either.
There is a three view controllers A, B and C. Managed by UINavigationController. And I'd like to hide the navigation bar for controller A, not for others.
Here is the code I've written for controller A.
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
self.navigationController.navigationBarHidden = YES;
}
- (void)viewWillDisappear:(BOOL)animated {
[super viewWillDisappear:animated];
self.navigationController.navigationBarHidden = NO;
}
When user comes back via navigation backBarButtonItem, it works fine for me. But when user slides backwards and forward from the left side(That is do not actually go backwards to controller A from controller B, but stay in controller B at last), the navigation bar will go into confusional sate.
Here is a demo to show this issue: [Demo]:https://github.com/heistings/NavigationTest
This problem can be simply fixed by disable the interactivePopGestureRecognizer of navigation controller, but can't say it's perfect:
self.navigationController.interactivePopGestureRecognizer.enabled = NO;
use animated property to YES.
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
[self.navigationController setNavigationBarHidden:YES animated:YES];
}
- (void)viewWillDisappear:(BOOL)animated {
[super viewWillDisappear:animated];
[self.navigationController setNavigationBarHidden:NO animated:YES];
}
Maybe this will help you.
This may be the best way for this issue since we have got the animated from framework:
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
[self.navigationController setNavigationBarHidden:YES animated:animated];
}
- (void)viewWillDisappear:(BOOL)animated {
[super viewWillDisappear:animated];
[self.navigationController setNavigationBarHidden:NO animated:animated];
}
I got your problem.
First Embed navigation controller to ViewController...
Click on storyboard...
Click on View Controller...
Goto Editor section.
Click on Embed in and then click on navigation controller.
And then Write the code below:
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
[self.navigationController setNavigationBarHidden:YES animated:animated];
}
- (void)viewWillDisappear:(BOOL)animated {
[super viewWillDisappear:animated];
[self.navigationController setNavigationBarHidden:NO animated:animated];
}
I have a master viewController and many detail viewController. Master viewController doesn't have any UINavigationBar but detail viewController has UINavigationBar. So I have some problem. When I swipe from detailVC to masterVC UINavigationBar hiding in detailVC
Have you any solution this?
I use these methods (master viewController )
-(void)viewWillAppear:(BOOL)animated{
[super viewWillAppear:animated];
[self.navigationController setNavigationBarHidden:YES animated:YES];
}
(detail viewController)
-(void)viewWillAppear:(BOOL)animated{
[super viewWillAppear:animated];
[self.navigationController setNavigationBarHidden:NO animated:YES];
}
Finally
I have solved this issue.
I wrote UINavigationBar hiding code for firstVC in the viewDidAppear method.
-(void)viewDidAppear:(BOOL)animated{
[super viewDidAppear:animated];
[self.navigationController setNavigationBarHidden:YES animated:YES];
}
I have 8 view controllers embedded into 1 navigation controller. I'd like to hide the navigation bar (keeping status bar) on my first view controller. When I've tried to do this this, the navigation bar disappears on all my view controllers.
Try this in the first view controller:
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
[self.navigationController setNavigationBarHidden:YES animated:animated];
}
- (void)viewWillDisappear:(BOOL)animated {
[self.navigationController setNavigationBarHidden:NO animated:animated];
[super viewWillDisappear:animated];
}
On View1 I hide the navigationBar in viewDidLoad:
- (void)viewDidLoad
{
[super viewDidLoad];
[self.navigationController setNavigationBarHidden:YES];
}
Then I navigate to View2 where I show the navigationBar
- (void)viewDidLoad
{
[super viewDidLoad];
[self.navigationController setNavigationBarHidden:NO];
self.title = #"Title";
}
But on back to View1 again, the navigationBar doesn't hide, even if I did tried to hide it after the pushViewController in View2
[self.navigationController pushViewController:View1 animated:YES];
[self.navigationController setNavigationBarHidden:YES];
I also tried to hide the navigation from viewWillAppear in View1 and it hides it, but there is an ugly delay and I don't find it as a good practice.
So can anyone help me with this issue, how can I hide correctly the navigationBar on back to View1?
The best practice to do what you want is putting bellow in your first viewController:
- (void)viewWillAppear:(BOOL)animated{
[self.navigationController setNavigationBarHidden:YES animated:animated];
[super viewWillAppear:animated];
}
- (void)viewWillDisappear:(BOOL)animated{
[self.navigationController setNavigationBarHidden:NO animated:animated];
[super viewWillDisappear:animated];
}
-(void) viewDidAppear:(BOOL)animated {
[super viewDidAppear:animated];
[self.navigationController setNavigationBarHidden:YES];
}
The ViewController1 is not going to get allocated again and so viewDidLoad is not going to get called.
You can do it in viewWillAppear though. But if you are saying that there is a delay, you can do one more thing.
You can get the reference ofViewController1 in ViewController2. Suppose ViewController1 is the first controller in the navigation controller, then do this:
//ViewController2.m
- (IBAction)backButtonPressed:(id)sender{
ViewController1 *view1 = [self.navigationController.viewControllers objectAtIndex:0];
[view1.navigationController setNavigationBarHidden:YES];
Your code is correct, but you need to write like this:
[self.navigationController setNavigationBarHidden:YES];
first, then write
[self.navigationController pushViewController:View1 animated:YES];
See when you are pushing View2 from View2 in navigation stack than View1 doesn't gets deallocated. it is there in in the stack. So when you popping out View2 that time View1 viewDidLoad won't get called. so your code setNavigationBarHidden to hide navigation bar doesn't executes. So put that code to ViewWillAppear or ViewDidAppear because these methods gets called every time View appears.
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
[self.navigationController setNavigationBarHidden:YES];
}