I have following View Controller hierarchy in my storyboard.
When I perform show segue from tab 1 of Groups Tab bar Controller by selecting the tableview cell, the Lists tab bar is presented but it have Groups's tab bar instead of its own tab bar.
How can I make it to show it's own tab bar when Lists's Controller is shown. Thanks
PS: I have one more tab bar controller in the hierarchy.
Make sure you set the Storyboard ID in interface builder for "List Tab Bar Controller." (Example below tabBar2)
Give a name for the segue between the TableViewController and ListTabBarController. (Example below show1)
Add the following code to prepare (for segue):
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "show1" {
let _ = navigationController?.popViewController(animated: true)
let storyborad = UIStoryboard(name: "Main", bundle: nil)
let tabVC2 = storyborad.instantiateViewController(withIdentifier: "tabBar2") as! UITabBarController
self.present(tabVC2, animated: true, completion: nil)
}
}
Adding this code
override func viewWillAppear(_ animated: Bool) {
self.hidesBottomBarWhenPushed = true
}
override func viewWillDisappear(_ animated: Bool) {
self.hidesBottomBarWhenPushed = false
}
in Table View Controller of both Tab bar Controllers worked. Now every Tab bar Controller's View Controllers have their own tab bar.
Related
In my iOS app, in a viewController I try to open a specific view in Tab Bar Controller.
I use a performSegue.
First I try to navigate straight to the specific view , but in this case the tab bar disappear
So I try to navigate to the tabViewController, and this lead me to the defult view (the first)
any idea how to navigate to a specific view in TabBarController ?
the performSegue I use:
self.performSegue(withIdentifier: "goToMain", sender: self)
//"goToMain" is my indentipier to the storyboard Segue
I use swift 4
with this code, you don't need segues, you can use when you push some button
let VC1 = self.storyboard!.instantiateViewController(withIdentifier: "tabBarController") as! tabBarLoginViewController
VC1.selectedIndex = 2 //this line says that the view that appears will be third of you tab bar controller
self.navigationController!.pushViewController(VC1, animated: true)
if you want to use segue use this, the segue needs to point of tab bar controller, not a view of tab bar controller
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject!) {
if (segue.identifier == "goToMain") {
let vc = segue.destination as! TabBarController
vc.selectedIndex = 2
}
}
I have embedded a viewController in a NavigationController and set it as the rootViewController. Then I connected the TabBarController to the NavigationController. I have a button in the LessonViewController that shows the PurchaseViewController, and then a back button in the PurchaseViewController which shows the LessonViewController. However, the tab bar was still present in the PurchaseViewController so I ticked hideBottomBarOnPush, which solved this problem, however, when I segued back to the LessonViewController the tab bar had disappeared.
Any ideas?
The following image is what my storyboard looks like now:
Similar to barb’s code, I got this to work, while enabling “hide bottom toolbar when pushed” and then popping the view controller:
override func viewWillAppear(animated: Bool) {
super.viewWillAppear(animated)
self.tabBarController?.tabBar.hidden = false
}
You should do following way,
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "Your_Identifier" {
hidesBottomBarWhenPushed = true
DispatchQueue.main.async { self.hidesBottomBarWhenPushed = false }
}
}
It will show TabBar reappears while segue back.
I have several view controllers and they are very complexed.
MainVC (embed with tab bar controller)
FriendListVC
ChatRoomUpperVC (embed with navigation view controller)
ChatRoomVC (NavigationViewController with embed in ChatRoomUpperVC) (only shows the tab bar)
ChatRoomQuestionVC (pushed from ChatRoomVC) (only shows the navigation bar)
MatchedWaitVC (pushed from ChatRoomQuestionVC) (hide both tab and navigation bars)
ChatVC (pushed from MatchedWaitVC) (only shows the navigation bar)
SettingVC
What I have to do is when I click the back button from the ChatVC, I should back to ChatRoomVC and show the tab bar on the bottom only.
I tried the code below but it shows the black screen and there is no tar bar neither.
override func willMove(toParentViewController parent: UIViewController?) {
if parent == nil
{
var viewControllers = navigationController?.viewControllers
viewControllers?.removeLast(3)
navigationController?.setViewControllers(viewControllers!, animated: true)
self.navigationController?.isNavigationBarHidden = true
self.tabBarController?.tabBar.isHidden = false
}
}
I guess you can use following hack to achieve what you want. In the viewDidLoad method of the ChatVC do:
override func viewDidLoad() {
super.viewDidLoad()
if let root = navigationController?.viewControllers.first {
navigationController?.viewControllers = [root, self]
}
}
This will remove the inbetween view controllers that are between ChatVC and ChatRoomVC. Now popping back (e.g. using the standard back button, or swiping from the left edge of the screen) will jump back directly to the ChatRoomVC.
EDIT
To show the tabBar again in the ChatRoomVC, add this to the viewDidAppear:
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
self.tabBarController?.tabBar.isHidden = false
}
This will ensure that as soon as ChatRoomVC appears on the screen, its tabBar will be presented, too.
I am using a tab bar controller which holds 5 tabs. In tab1 I have a button which bring me to my tab2. This tab2 is embedded in a navigation controller.
So how do I make the Tab bar hidden in the tab2 when i come from tab1 by segue?
In storyboard I have a made Hide Bottom bar on push active. Also I have written self.tabBarController?.tabBar.isHidden = true in view did load of tab2.
In tab1 my prepareForSegue is like this
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "ShortcutSegue" {
let tabVc = segue.destination as! UITabBarController
tabVc.selectedIndex = 1
tabVc.tabBarController?.tabBar.isHidden = true
}
}
For the tab2 view controller, you can write the code below to hide the tab bar.
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if let destinationTabBar = segue.destinationViewController as? UITabBarController {
if segue.identifier == "ShortcutSegue" {
destinationTabBar.viewControllers?.removeAtIndex(adminScreenIndex)
}
}
}
Or you can write the code below in your override func prepareForSegue method.
if let tabVc = segue.destinationViewController as? tab2ViewController {
tabVc.hidesBottomBarWhenPushed = true
}
Or you can tick the "Hide Button Bar On Push" in the main storyboard in the attributes inspector for the tab bar view controller shown in the image below.
Main storyboard attribute inspector "Hide Button Bar On Push"
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)