I have a UINavigationController and I push and pop views, but in some views, I want to go to specific view from the stack so I use this code. It works but the nav bar disappears.
for controller in self.navigationController!.viewControllers as Array {
if controller.isKind(of: HomeViewController.self) {
self.navigationController!.popToViewController(controller, animated: true)
break
}
}
In your HomeViewController you could try the following:
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
self.navigationController?.setNavigationBarHidden(false, animated: animated)
}
You can programmatically show the Navigation Bar as mentioned in Idem's comment, or if you are using XCode interface builder you may also want to ensure that the Status Bar is properly defined for each View in the Simulated Metrics area of the properties for the View - this works for non-Storyboard layouts.
Simulated Metrics Section of properties in XCode Interface Builder
You can try to answer proposed by #ldem
However you can also try presenting the view rather than popping
so change
self.navigationController!.popToViewController(controller, animated: true)
to
self.present(controller, animated: true, completion: nil)
Related
I have a tab bar which I only need on five screens. However, it goes to every screen when I push the view controller. How do I stop this from happening. I found a lot of solutions telling me to use hidesBottomBarWhenPushed but the problem I'm having with that is when I pop the view controller the tab bar is gone. How do I solve this problem? Also, please give me suggestions on my questions as I'm sort of new here! Thanks!
Edit: I've also seen this: self.tabBarController?.tabBar.hidden = false, but this kind of looks odd as the tab bar just disappears in the middle of the push animation.
Need to inherit UINavigationController custom navigation controller, override pushViewController & setViewControllers method to set hidesBottomBarWhenPushed, and then use custom navigation controller to jump
open class CustomNavigationController: UINavigationController {
...
open override func pushViewController(_ viewController: UIViewController, animated: Bool) {
if viewControllers.count > 0 {
viewController.hidesBottomBarWhenPushed = true
}
super.pushViewController(viewController, animated: animated)
}
open override func setViewControllers(_ viewControllers: [UIViewController], animated: Bool) {
if viewControllers.count > 1, let vc = viewControllers.last {
vc.hidesBottomBarWhenPushed = true
}
super.setViewControllers(viewControllers, animated: animated)
}
}
I actually figured it out. Basically in your viewdidAppear you add in self.hidesBottomBarWhenPushed = true and in your viewDidDisappear you add in
self.hidesBottomBarWhenPushed = false. Thanks for your guys's answers anyways.
I'am working on an app, which is embedded in a UINavigationController. I like Storyboard, so I am looking for a solution that could be done in Storyboard. If that's not possible, I am doing it programmatically.
I want different settings for the top- and toolbar (hide/ show). See the image below.
Now look at situation two. I want the third ViewController to have no topbar. But if I set it to "none", four and five have no topbar as well. See image:
What I want is only the third controller not to have a topbar.
How is this possible in Storyboard?
Thanks!
Niels
In your viewWillAppear() of your third ViewController add this simple line of code -
self.navigationController?.isNavigationBarHidden = true
From Storyboard -
Click on that specific ViewController where you don't want to show the bar then go to Attributes inspector. There is a drop down labeled Top Bar change this drop down to none
And for the smooth animation -
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)
}
I wondering how Twiter is doing, in the ios app, to push a profile viewController with a new navbar or a new navigationController above the current viewController ?
In your stoyboard you have your UITabBarController connected to the UIUserController. Embed a UINavigationController between them and you get the desired result.
The UINavigationController is probably the same. What seems to be a custom navigation bar is actually a transparent navigation bar and a UIView coming from the top behind it.
You will need to hide the Navigation bar in viewWillAppear and show it for the pushed view controller
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(true)
self.navigationController?.setNavigationBarHidden(true, animated: true)
}
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(true)
self.navigationController?.setNavigationBarHidden(false, animated: true)
}
explanation can be found 👇
https://medium.com/#qbo/push-page-with-without-navigation-bar-eb3cea35178d
In my TabBarController, I'm presenting a UINavigationController as a modal. Once I present it, I'd like everything to be transparent (including the navigation bar). However, I'd like everything after the root controller to be opaque.
let transVC = self.storyboard?.instantiateViewControllerWithIdentifier("TransparentViewController") as! TransparentViewController
transVC.delegate = self
transVC.view.backgroundColor = UIColor.clearColor()
transVC.modalPresentationStyle = .CurrentContext
self.navController = UINavigationController(rootViewController: transVC)
self.navController?.modalPresentationStyle = .CurrentContext
self.presentViewController(self.navController!, animated: false, completion: nil)
Later, I will push other view controllers onto the stack. I want them to be opaque.
let messageVC = self.storyboard?.instantiateViewControllerWithIdentifier("MessagesViewController") as! MessagesViewController
self.navController!.pushViewController(messageVC, animated: false) //should be opaque
If there is no sure way to do this, maybe we can take a screenshot of the app and set it as the background, as a workaround? How would I do that?
No, taking a screenshot is not necessary for a modally presented view controller to have a transparent background. Just present the segue using the presentation style of .OverFullScreen or .OverCurrentContext, rather than .CurrentContext, and ensure the view controller has a clear colored background.
Also, make sure you are setting the modalPresentation style of the navigation controller since that is what you are presenting, and therefore what will be used by the modal segue:
navController?.modalPresentationStyle = .OverFullScreen
Auto-(un)hiding Navigation Bar
For the navigation bar to be hidden on the navigation controller's root view controller, I would subclass the root view controller so that when it appears, the navigation bar is hidden. When it disappears, the navigation bar should be unhidden.
In TransVC:
override func viewWillAppear(animated: Bool) {
super.viewWillAppear(animated)
self.navigationController?.setNavigationBarHidden(true, animated: true)
}
override func viewWillDisappear(animated: Bool) {
super.viewWillDisappear(animated)
self.navigationController?.setNavigationBarHidden(false, animated: true)
}
Because it can be animated, setNavigationBarHidden integrates seamlessly with pushViewController. Alternatively, you could move the line that unhides the navigation bar to the viewWillAppear method in the view controller you are presenting.
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)