After presenting a Tab bar controller, I can't dismiss tab bar controller.
I also can't even tap my button after I reinstall without delete the app. Need to uninstall and reinstall the app then I am able to tap the button
I already tried some other way of dismiss the tab bar controller but still unable to dismiss the controller.
This is my current way to present controller after login
let storyboard = UIStoryboard.init(name: "Main", bundle: Bundle.main)
let loginVC = storyboard.instantiateViewController(withIdentifier: "Home")
self.present(loginVC, animated: true, completion: nil)
This is my current way to dismiss controller
#IBAction func btnLogout_TouchUpInside(_ sender: Any) {
dismiss(animated: true, completion: nil)
}
This is my root view
let storyboard = UIStoryboard(name: "Main", bundle: Bundle.main)
if defaults.bool(forKey: "isLoggedIn") {
// Show Home screen
window?.rootViewController = storyboard.instantiateViewController(withIdentifier: "Home")
} else {
// Show Login screen
window?.rootViewController = storyboard.instantiateViewController(withIdentifier: "Login")
}
window?.makeKeyAndVisible()
try to dismiss all presented controller it may work for you
DispatchQueue.main.async {
self.view.window!.rootViewController?.dismiss(animated: true, completion: {
print("All controller dismissed successfully..")
})
}
Try This
self.presentingViewController?.dismiss(animated: true, completion: nil)
Hmm. Your update helps although I'm still not sure what's happening. My guess is that you are setting login as root, then presenting home. But I'm not sure where or what you are trying to dismiss. If it's on the login then there is nothing to dismiss as it's the root view controller.
My suggestion would be to reconfigure the storyboard. Because you are manually presenting the view controllers I'm going to assume that the storyboard doesn't contain any segues between the controllers. I'd suggest adding the segues and using them.
I'd set the home view controller as the initial view controller and set the Main storyboard as the storyboard to load in the apps settings. Then all the code to load the storyboard and set the root view controller can be removed.
Next I'd make a manual modal segue from the home view controller to the login view controller. Then in the viewDidAppear of the home view controller I'd add the code to decide if a login was needed and to them perform the login segue.
Then in the login view controller you can do a dismiss and it will remove the model login view.
This is but one of many ways to do this, but it's pretty much the simplest to get you going. You don't need any code to load or set root view controllers or anything else. It just lets the storyboard do the work for you.
Related
Having some trouble permanently moving one from view controller to another. The normal segues seem to all have a 'go back' option.
I know I can imbed the VC in a navigation controller and create a custom segue which rewrites the hierarchy/changes root VC
class ReplaceSegue: UIStoryboardSegue {
override func perform() {
source.navigationController?.setViewControllers([self.destination], animated: false)
}
}
But I want to avoid a navigation controller as it will confuse things when I add a SWRevealViewController later.
Can/Should I change the storyboard VC (outside of AppDelegate that is)?
Thanks - apologies if this is a 'beginner' question
You can either change rootViewController of your main window:
self.window.rootViewController = vc
or you can just simply set vc's modalPresentationStyle to fullscreen (this doesn't have a "go back" option by itself, only you can dismiss it calling dismiss)
let vc = UIViewController()
vc.modalPresentationStyle = .fullScreen
or from storyboard change it's presentation style to fullscreen.
I created UITabBarController programmatically in AppDelegate with 4 view controllers(using .xib). When user tap some button on ViewController (VC-A) it present another VC (VC-B) and covered tabbar. So I want to VC-B has a tabbar on the button.
I tried to add VC-B as a child of tabbarcontroller. I tried to .present(vc) and .show(vc) on both: VC-A and VC-A.TabBarController
Creating controllers in AppDelegate:
let controllers = [tabViewController1,tabViewController2,tabViewController3,tabViewController4]
tabBarController.viewControllers = controllers
window?.rootViewController = tabBarController
presenting in VC-A
self.tabBarController?.present(controller, animated: false, completion: nil)
right click and drag from tabbar controller in storyboard to VC-B. that should create a tab on the bottom of your VC-A and VC-B to go back and forth without having to implement any backend code unless you want to animate
The solution is to embed every VC in navigationController and then add to TabBarController.
let vc1 = ViewController1()
let navController1 = UINavigationController(rootViewController: vc1)
navController.isNavigationBarHidden = true
let controllers = [navController1, navController2, navController3, navController4]
tabBarController.viewControllers = controllers
window?.rootViewController = tabBarController
Then call
self.navigationController?.pushViewController(controller, animated:
true)
To diplay VC with tabbar
I will press the red login button at the bottom of the picture and try to log in.
login button => "로그인"
After that, log in.
let moreVC = self.storyboard?.instantiateViewController(withIdentifier: "MoreViewController") as! MoreViewController
moreVC.definesPresentationContext = true
moreVC.modalPresentationStyle = .fullScreen
let navController = UINavigationController(rootViewController: moreVC)
self.present(navController, animated: true, completion: nil)
If the login proceeds without error, the above code will be called to display the screen when the login is completed.
If the flow proceeds as the code above, this screen appears.
The screen shown is not fullscreen, and the tabbar at the bottom is gone. The screen I want is the screen below.
How can I present a tab bar when presenting the screen?
I am having an issue with using the .overCurrentContext modalPresentationStyle on a tvOS view controller:
let vc = UIStoryboard(name: "", bundle: Bundle.main).instantiateInitialViewController() //representative of actually presented VC
vc.modalPresentationStyle = .overCurrentContext
present(vc, animated: true, completion: nil)
On the presented view controller, pressing the menu button ceases to return to the presenting view controller. This also occurs when setting it to .overFullScreen and .blurOverFullScreen. However, I am having no such problem when setting it to .currentContext or .fullScreen. Is there anything particular that needs to be used when using certain UIModalPresentationStyle's?
let vc = UIStoryboard(name: "", bundle: Bundle.main).instantiateInitialViewController() //representative of actually presented VC
vc.modalPresentationStyle = .overCurrentContext
self.definesPresentationContext = true //*** adding this line should solve your issue ***
self.present(vc, animated: true, completion: nil)
So what's going on here? The definesPresentationContext property was added in iOS 8, and the documentation states the following:
When a view controller is presented, iOS starts with the presenting view controller and asks it if it wants to provide the presentation context. If the presenting view controller does not provide a context, then iOS asks the presenting view controller's parent view controller. iOS searches up through the view controller hierarchy until a view controller provides a presentation context. If no view controller offers to provide a context, the window's root view controller provides the presentation context.
If a view controller returns YES, then it provides a presentation context. The portion of the window covered by the view controller's view determines the size of the presented view controller's view. The default value for this property is NO.
By setting definesPresentationContext to YES you ensure that the controller to be presented is presented within the bounds of the original view controller.
I have two storyboard (Main and SB2)
I have one view controller in storyboard in Main and one in SB2
I perform
let SB2 = UIStoryboard(name: "SB2", bundle:nil)
let vc : UIViewController = self.SB2.instantiateViewControllerWithIdentifier("VC2")
self.showViewController(vc, sender: self)
After the second viewcontroller loads and this command is run, it prints nil:
print(self.navigationController) // prints nil
In SB2 (second storyboard) I clicked on the viewcontroller (VC2) and then clicked on Editor > Embed In > Navigation Controller. This placed a navigation controller with the storyboard and the root view controller is VC2. I triple checked this. The first sign of it being connected was the gray navigation bar on top. The second being that there is segue connecting the navigation controller to VC2 and the last place I could have checked is in the navigation controller utilities.
I am thinking that maybe I shouldn't transition from VC1 to VC2 directly but rather VC1 to NavigationController however I don't know how to do this or if its even possible.
I don't know when sb2 prints nil when in face a navigation controller is connected to it. Any help is appreciated.
You need to push the view controller (VC2) on to the navigation controller.
let SB2 = UIStoryboard(name: "SB2", bundle:nil)v
let nvc = SB2.instantiateViewControllerWithIdentifier("NVC") as! UINavigationController
let vc : UIViewController = self.SB2.instantiateViewControllerWithIdentifier("VC2")
nvc.pushViewController(vc, animated: true)
Then in your view controller try calling
self.navigationController
In your storyboard,
select the initial ViewController. With this view controller selected, choose the menu item
Editor -> Embed In -> Navigation Controller
I have VC1 which is a basic view controller, I then want to present VC2 which is inside a navigation controller. Whenever I present it, it doesn't display the navigation controller. I want this all done pragmatically. The code I have been using to present VC2 is:
func matchesPressed(sender: UIButton!) {
let matchesTVC: Matches = self.storyboard?.instantiateViewControllerWithIdentifier("Matches") as! Matches
self.presentViewController(matchesTVC, animated: true, completion: nil)
}
How do I present the navigation controller it is inside as well?
Is the navigation controller in the storyboard? If so, give it a storyboard ID and replace your matchesTVC stuff with the navigation controller.
If matches is a standalone view controller in the storyboard, you can do it in code like this:
let matchesTVC: Matches = self.storyboard?.instantiateViewControllerWithIdentifier("Matches") as! Matches
let navContr = UINavigationController(rootViewController:matchesTVC)
self.presentViewController(navContr, animated: true, completion: nil)
Instantiate the navigation controller that contains your view controller and present the navigation controller.