Show UINavigationBar - ios

Here's the deal... I can't get the UINavigation bar to appear on one of my views. I have the whole thing in a NavigationViewController in IB and turned of the navigation bar though IB because I don't want it in most of my app but when I try to show the navigation bar via code, it doesn't show up.
here's the code I used to try to get the nav bar to show up... but didn't work:
[self.navigationController setNavigationBarHidden:NO animated:YES];
[self.navigationController setNavigationBarHidden:NO];
self.navigationController.navigationBarHidden = NO;
self.navigationController.navigationBar.hidden = NO;
Any help will be greatly appreciated
respectfully,
Matt

The code you write should only work inside of one of UINavigationController's controllers, not views.
So, if you call it from your view, you should replace self with controller name,in which this view is placed.

Related

Navigation bar height changing on hide and unhide

In my application I have to show one screen with navigation bar and then by pushing another controller with no navigation bar.
When I come back I again want to show the navigation bar. But, my navigation bar is not visible with complete height.
I set the navigation bar with no translucent, and style opaque.
can you help me anyone.
this will hide and show navigation bar perfectly:
in first view controller implement:
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
[self.navigationController setNavigationBarHidden:NO animated:YES];
}
in pushed view controller:
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
[self.navigationController setNavigationBarHidden:YES animated:YES];
}
Show some code...
or try showing the navigation bar from the view controller you're coming back from just before you tell it to go back... Should avoid the issue. But suspect you're doing something else wrong.
Use this method:
In view controller where you want to hide navigation bar add the below code in viewWillAppear
[navigationController setNavigationBarHidden:YES];
So, if you are in some view controller:
In view controller where you want to show navigation bar add the below code in viewWillAppear
[self.navigationController setNavigationBarHidden:NO];

SWRevealViewController setFrontViewController issue

I have a searchbar in my rearviewcontroller. When I click the "search" button, I want my frontView to change (to a searchViewController). The problem is, when i'm pushing with:
setFrontViewController:animated:
the navigationBar isn't showing anymore. I tried to show it with:
[[self navigationController] setNavigationBarHidden:NO];
But it doesn't change anything. I initialize all I need from the navigation bar in the viewDidLoad from the searchViewController. Anyone has an idea ?

I have view controllers in a navigation controller hierarchy, but only want the navigation bar on the first view controller - how do I do this?

I have a main view controller that lists a bunch of items, and when they tap on one of the items it segues them to the next view. However, in the next view, I don't want the navigation bar to be there, I only want it in the first view (I'm using a UIToolBar for the navigation bar, kind of like in iBooks).
How exactly do I go about achieving this? If I remove the main view controller from the navigation controller completely (unembedding, effectively) I can implement the nav bars selectively, but this solution doesn't allow segues, so it's no good.
My other solution was to call self.navigationController.navigationBarHidden = YES; in viewDidAppear for the second view, but with this, the UIToolBar that I added in my storyboard is pushed under the navigation bar that hasn't been hidden yet, and then when it does get hidden, it disappears and the UIToolBar "falls down", which is a pretty gross effect to the user.
What would be the best way to go about getting this effect?
The best way to do that is the following. In you viewWillAppear: in the first (rootViewController) of your UINavigationController, you set:
-(void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
[self.navigationController setNavigationBarHidden:NO animated:animated];
}
and then in you viewWillDisappear, you the the opposite:
-(void)viewWillDisappear:(BOOL)animated
{
[super viewWillDisappear:animated];
[self.navigationController setNavigationBarHidden:YES animated:animated];
}
This way should work without nothing 'ugly' happening to the user.

how to hide tabbar when I use NavController to push view?

I have tried two kinds of methods below:
1.[self.tabBarController.tabBar setHidden:YES];
2.
self.navigationController.hidesBottomBarWhenPushed = YES;
[self.navigationController pushViewController:OneViewController animated:YES];
But the result is that the tabbar items is hidden, but there is still a black block there,
I guess it is because the view's tab bar style is not set to None.Just like the IB's view setting below:
How to solve this problem, thx
To hide the nav bar use this code
[[self navigationController] setNavigationBarHidden:YES animated:YES];
To show the nav bar you can use this code
[[self navigationController] setNavigationBarHidden:NO animated:YES];
And here is the doc's that might be helpful my friend
https://developer.apple.com/library/ios/ipad/#documentation/uikit/reference/UINavigationController_Class/Reference/Reference.html
Hope that helps you man.
EDIT
Here is a github project for hiding the tab bar. Hope this helps you.
https://github.com/idevsoftware/Cocoa-Touch-Additions/tree/master/UITabBarController_setHidden
Let me know if this is what ou are looking for and if you need more help man.

XCode/iOS: setToolbarHidden:animated creates new unwanted toolbar?

I'm trying to achieve something similar to user of this post:
Xcode/iOS: How to hide Navigation- AND ToolBar on scroll down?
I'm able to hide (or unhide using NO) the navigation bar successfully using the code:
[[self navigationController] setNavigationBarHidden:YES animated:YES];
However, when I attempt to hide the toolbar using the code:
[[self navigationController] setToolbarHidden:YES animated:YES];
Nothing happens. I then noticed when unhiding the toolbar that I received an additional blue toolbar that I didn't realize existed. This screenshot shows this:
Screenshot
I do not want the blue bar. What I am trying to do is hide or unhide the Black toolbar with the icons on it. (the UITabBar).
I think what I need to do is somehow I need to access the navigation controller of one of the parent view controllers and call the setToolbarHidden on the navigation controller of that view. However, I can't seem to figure out how to do this.
I've tried the following and all seem to have no effect:
[[[self parentViewController] navigationController] setToolbarHidden:YES animated:YES];
or
[[[[[[UIApplication sharedApplication] delegate] window] rootViewController] navigationController] setToolbarHidden:YES animated:YES];
My view controller storyboard consists of the following:
The InitialViewController is a TabBarViewController. It contains three children. One of those children is a UINavigationController. This navigation controller gets several UITableViewController pushed onto it, and eventually a UIViewController is pushed. This last UIViewController is what is seen in the screenshot.
Rough Layout:
TabBarViewController
UIViewController
UITableViewController
UINavigationController
UITableViewController
UITableViewController
UITableViewController
UIViewController
I've tried using
[self parentViewController] parentViewController] parentViewController] ...
to attempt to get back to the top, but this hasn't seemed to work either.
Any suggestions?
I think the problem here might be related to UITabBarController not having a UIToolbar. The setToolbarHidden: method will only apply to the UINavigationController's built-in toolbar (see Apple's documentation). If it's the UITabBarController's tab bar that you actually want to hide, take a look at this post which links to a method using UIView animations directly on the UITabBar.

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