Now I have a viewController(A) which is root view controller for Navagation Controller followed by Tab Bar Controller, I want to perform segue from it to another viewController(B), totally replace the A.
Therefore I applied show detail(replace), it worked well as what I think in other cases. However in this case, when A segued to B, the navigation bar and Tab bar still existed. Why this happened and how to solve it?
In viewController(A) you have to write
override func viewWillAppear(_ animated: Bool) {
self.tabBarController?.tabBar.isHidden = false
self.navigationController?.navigationBar.isHidden = false
}
and in viewController(B) you have to write
override func viewWillAppear(_ animated: Bool) {
self.tabBarController?.tabBar.isHidden = true
self.navigationController?.navigationBar.isHidden = true
}
Related
I have a standard UINavigationController for an iOS application in Swift 5 in which I'd like to hide the Navigation Bar on the first ViewController in the stack.
My storyboard is essentially:
UINavigationController -> ViewControllerA -> ViewControllerB
with simple Show segues.
In ViewControllerA I put the following:
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
self.navigationController?.navigationBar.isHidden = true
}
In ViewControllerB I put the following:
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
self.navigationController?.navigationBar.isHidden = false
}
But in the simulator the transition from A->B presents this weird, like, "scooping" animation and I cannot figure out how to get rid of it.
Thoughts? Thank you in advance!
There's another method for hiding the navigation bar where you can set 'animated' to false which might help you.
self.navigationController?.setNavigationBarHidden(true, animated: false)
I have a UITableView embedded in a NavigationController. The cells each link out to a larger information ViewController. For UI purposes, I hide the Navigation Bar on the TableView and show it in the InfoViewController.
The problem I am experiencing is this: upon booting the app, the NavBar is successfully hidden on the TableView. The first time I tap into a cell and open an InfoViewController, the NavBar comes back as expected. I back out of that VC and into the TableView. Again, the NavBar is hidden, as expected. If I tap into another cell, the NavBar is not displayed as expected. NOTE: This happens even when I remove any code to hide the Navigation Bar.
Here are the relevant code snippets:
TableViewController (in ViewDidLoad()):
self.navigationController?.isNavigationBarHidden = true
InfoViewController:
override func viewWillAppear(_ animated: Bool) {
self.navigationController?.navigationBar.isHidden = false
super.viewWillAppear(animated)
}
Why would it work the first time, but not the second. Any help is appreciated!
For clarification:
App opens to TableView:
enter image description here
I click into the TableViewCell to Segue to InfoViewController:
enter image description here
I hit "Back" to go back to TableViewController. NavBar is still hidden. I click on the same cell:
enter image description here
EDITED: Messed up the TableViewController Code. Put = false instead of = true.
Also, I have one more thought, please someone check this for me. The TableViewController is inside a UIContainerView. It is almost as if when I hit "Back" I am exiting the NavigationController flow and I cannot get back in it.
Please try this code its working fine for hiding navigationBar
TableViewController
class TableViewController: UITableViewController {
override func viewDidLoad() {
super.viewDidLoad()
self.navigationController?.isNavigationBarHidden = true
}
}
InfoViewController
class InfoViewController : UIViewController {
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
self.navigationController?.isNavigationBarHidden = false
}
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
self.navigationController?.isNavigationBarHidden = true
}
}
Simple hide navigationbar again when the view controller is appear again,
do below code in tableViewController:
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
self.navigationController?.isNavigationBarHidden = true
}
Is there a way to show navigation view on one view and not show it on another at the same time?
The problem: I have two view controllers - table and description view (called on cell click).
Table got a navigation bar, while description view - don't have it.
Table view:
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
self.navigationController?.isNavigationBarHidden = false
}
Description view controller:
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
self.navigationController?.isNavigationBarHidden = true
}
Everything works fine, but when i swipe for half screen back to table (keeping finger on screen, watching both views) - i don't see navigation bar (which works as expected with that code), and when i release finger - whole table view jumps, because nav bar is shown.
Is there a way to keep not seeing nav bar in description view and see it all the time in table view?
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
self.navigationController?.setNavigationBarHidden(false, animated: true)
}
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
self.navigationController?.setNavigationBarHidden(true, animated: true)
}
You can hide the navigation bar while doing the segue (earlier). If you're doing it programmatically:
yourVCToBePushed.navigationController?.isNavigationBarHidden = true
If you're doing it in the storyboard, do similarly inside prepareForSegue:
let yourVCToBePushed = segue.destination as! YourVCToBePushed (type)
yourVCToBePushed.navigationController?.isNavigationBarHidden = true
You can also create your own "navigationView" inside tableView header, and add buttons there.
I want one of my pushed viewControllers in a navigation controller stack to be "full screen" - no navigation bar and no status bar.
I have this code that hides and shows the navigation bar in one of the view controllers of navigation controller (I want it to be pushed on full screen):
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
self.navigationController?.setNavigationBarHidden(true, animated:animated)
}
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
self.navigationController?.setNavigationBarHidden(false, animated:animated)
}
In the same viewController I'm also hiding the status bar with this:
override var prefersStatusBarHidden: Bool {
return true
}
It is hiding and showing as expected but the problem is that I get a black stripe on the transition when pushing this view controller and back from it (see images).
Push to this controller:
Push to this controller
And back from this controller (back button):
Back from this controller
It appears this is happening because of the prefersStatusBarHidden function Removing this solves the issue.
The code for show/hide the nav bar is taken from:
https://stackoverflow.com/a/2406167/4207465
and based on apple developer library:
"Showing and Hiding the Navigation Bar -
When a navigation bar is used in conjunction with a navigation controller, you always use the setNavigationBarHidden:animated: method of UINavigationController to show and hide the navigation bar..."
Not sure why it's happening,
Thanks for the help!
#Boaz Frenkel
There is one solution to fix the black strip during hide and show of navigation bar with or without status bar.
ViewController A : Fullscreen View
override func viewWillAppear(animated: Bool) {
self.navigationController?.setNavigationBarHidden(true, animated: animated)
super.viewWillAppear(animated)
}
override func viewDidAppear(animated: Bool) {
UIApplication.sharedApplication().setStatusBarHidden(true, withAnimation: .Fade)
super.viewDidAppear(animated)
}
ViewController B : With NavigationBar and status bar
override func viewWillAppear(animated: Bool) {
self.navigationController?.setNavigationBarHidden(false, animated: animated)
UIApplication.sharedApplication().setStatusBarHidden(false, withAnimation: .None)
super.viewWillAppear(animated)
}
Please try to hide navigation bar in viewDidAppear. Now you're hidding bar before showing controller.
func viewDidAppear(_ animated: Bool) {
super. viewDidAppear(animated)
self.navigationController?.setNavigationBarHidden(true, animated: animated)
}
I am having multiple view controller in my application. I want to hide navigationbar in my first view controller. So I use the following code to hide the navigation bar
navigationController?.setNavigationBarHidden(navigationController?.navigationBarHidden == false, animated: true);
Now I want to add navigation bar in some other viewController but, my navigation bar not visible in that viewcontroller. Why it is happening?
My storyboard showing the navigation bar but once I try to run my application it is gone.
If I hide navigation bar from one view controller then we can't use navigation controller, Is it so? I hope I am wrong. Then what are the reasons for navigation bar not shown?
EDIT:
Also I want my view controller in portrait mode only. So I did the following Is that causing the issue?
extension UINavigationController{
public override func shouldAutorotate() -> Bool {
if (UIDevice.currentDevice().orientation == UIDeviceOrientation.LandscapeLeft ||
UIDevice.currentDevice().orientation == UIDeviceOrientation.LandscapeRight ||
UIDevice.currentDevice().orientation == UIDeviceOrientation.Unknown) {
return false
}
else {
return true
}
}
public override func supportedInterfaceOrientations() -> UIInterfaceOrientationMask {
return [UIInterfaceOrientationMask.Portrait ,UIInterfaceOrientationMask.PortraitUpsideDown]
}
}
Edit 1:
I am using following code to move from one view controller not link from the storyboard. Is that causing issue now?
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let secondViewController = storyboard.instantiateViewControllerWithIdentifier("HomeVC")
presentViewController(secondViewController, animated: false, completion: nil)
Edit 2:
Please check my following screenshots. Which are my settings for secondview controller
Edit 3:
Here is my navigation controller attribute inspector
Navigation Controller is a controller, which has stack of view controllers. So if you have something like this:
NAV -> A -> (segue) B
Even if you'll hide navigation bar you still should be able to make segues. Also can't you just unhide navigation bar in second (B) view controller in viewWillAppear? And in first the same way hide it on viewWillAppear.
edit: Final solution to the problem:
Use:
let controller = storyboard.instantiateViewControllerWithIdentifier("HomeVC")
self.navigationController!.pushViewController(controller)
instead of:
let secondViewController = storyboard.instantiateViewControllerWithIdentifier("HomeVC")
presentViewController(secondViewController, animated: false, completion: nil)
Because pushViewController will add secondViewController to its stack. presentViewController was replacing your navigation controller that's why you couldn't see navigation bar.
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
// Hide the navigation bar on the this view controller
self.navigationController?.setNavigationBarHidden(true, animated: animated)
}
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
// Show the navigation bar on other view controllers
self.navigationController?.setNavigationBarHidden(false, animated: animated)
}
in viewDidLoad method of the view controller in which you don't want to show navigation bar add the line
navigationController.navigationBarHidden = true
you are presently hiding in all view controllers
Edit: You are presenting view controller instead it should be
self.navigationController!.pushViewController(controller)
do like in viewcontroller based hidden using Swift 4.0
To hide navigationController in viewWillAppear
override func viewWillAppear(animated: Bool) {
super.viewWillAppear(animated)
self.navigationController?.isNavigationBarHidden = true
}
To unhide navigationController in viewWillDisappear
override func viewWillDisappear(animated: Bool)
{
super.viewWillDisappear(animated)
self.navigationController?.isNavigationBarHidden = false
}
I am having same requirement in my swift project.
this is how I have handled Navigation bar
Make sure your first screen is embedded into Navigation controller
example we have two screens A and B
In screen A you need to hide navigation bar in viewWillAppear
override func viewWillAppear(animated: Bool)
{
super.viewWillAppear(animated)
//hide navigation for screen A
self.navigationController?.navigationBarHidden = true
}
for enabling Navigation in screen B
you need to add below code in screen A
override func prepareForSegue(segue: (UIStoryboardSegue!), sender: AnyObject!)
{
if (segue.identifier == "screen B's segue identifier here")
{
//enable navigation for screen B
navigationController?.setNavigationBarHidden(navigationController?.navigationBarHidden == false, animated: true)
}
}
Using above style, I can enable or disable navigation bar for specific screen, whenever I want
If you need to have this navigation bar hidden only in this controller, the best way is to show it in viewWillDisappear() and hide in viewWillAppear().
It's too late to reply and there are other good answers but I would like to share what worked for me.
let controller = self.storyboard?.instantiateViewControllerWithIdentifier("HomeVC")
self.navigationController!.pushViewController(controller!, animated:true)