I am adding a UIViewController as PresentViewController using Tab Bar, then the view looks like:
After selecting any option, I need to hide the Tab Bar, but my screen looks like:
Kindly suggest me the solution for it. I am adding a view controller:
self.presentViewController(responseSelector, animated: true,
completion: nil)
I got solution for it.
let responseSelector =
ResponseSelectorViewController(responseId:currentResponse.title,
delegate:self)
responseSelector.modalPresentationStyle = .OverCurrentContext
self.presentViewController(responseSelector, animated: true, completion: nil)
I have change 1 line of code in this.
responseSelector.modalPresentationStyle = .OverFullScreen
I have used the line below in the ViewWillAppear() function:
self.tabBarController!.tabBar.isHidden = true
And it works great.
Related
I have tried to change it's size manually (by dragging) and still not working.
You can set its Content size to whatever you want.
On iOS 13 a "Modal" segue will show the presenting controller that way by default.
If you want the view controller to occupy the whole screen, set "Full Screen" on the "presentation" setting of any segue entering that controller.
Segue Settings
If your view presents programmatically (not via storyBoard), have this in mind:
From XCode 11 and up, when you build for iPad you have to add "modalPresentationStyle = .fullScreen" to get full screen views, not square ones. As follows:
let vc = UIViewController()
vc.modalPresentationStyle = .fullScreen
self.present(vc, animated: true, completion: nil)
If you want transparency on the new viewController, you can write ".overFullScreen", as follows:
let vc = UIViewController()
vc.modalPresentationStyle = .overFullScreen
self.present(vc, animated: true, completion: nil)
I have a BarCodeScanner-viewController which I call from 3 different views. My app also has a tabbarController. Problem is, the tabbar hides from two of the viewControllers, while the third one always shows the tabbarController, while in cameraMode (barCodeScanner).
I've tried to set the ´self.tabBarController?.tabBar.isHidden = true´ in both viewDidLoad(), viewDidAppear() and viewWillAppear() and changed it to false on viewWillDisappear()
I have also tested to set 'scanner.hidesBottomBarWhenPushed = true' without result.
// working:
setUpBackButton(withTitle: NSLocalizedString("button_cancel", comment: ""))
let scanner = BarCodeScanner()
self.navigationController?.pushViewController(scanner, animated: true)
scanner.callback = { result in
// code with result
}
// working:
setUpBackButton()
let scanner = BarCodeScanner()
scanner.modalPresentationStyle = .overCurrentContext
self.navigationController?.pushViewController(scanner, animated: true)
scanner.callback = { result in
// code with result
}
// NOT WORKING (i.e. not hiding the tabbarController):
let scanner = BarCodeScanner()
setupBackButton()
scanner.modalPresentationStyle = .overCurrentContext
self.navigationController?.pushViewController(scanner, animated: true)
scanner.callback = { result in
// code with result
}
I wan't the tabbar to be hidden in the third example too.
Using Push actually adds a new controller in navigationController thats why your tabbar is not hiding to hide it with new controllers overlay you need to change push with present function in Thrid example
Replace
self.navigationController?.pushViewController(scanner, animated: true)
With
self.navigationController?.present(scanner, animated: true, completion: nil)
I have set large title in viewWillAppear()
self.navigationItem.largeTitleDisplayMode = .always
self.navigationController?.navigationBar.prefersLargeTitles = true
self.navigationItem.title = "Reports"
But still when I redirect to next VC and come back I can see navigation Title in small size for a while and then I see large title, anybody know why and how to fix it?
If you want the next VC to have largeTitleDisplayMode false, you could try to set it in viewWillDisappear() of the current VC, like this:
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
self.navigationController?.navigationBar.prefersLargeTitles = false
}
You should set this in the viewDidLoad of your view controller, not the viewWillAppear. It's the first part in the view lifecycle and where this work should be done
I'm trying to present a view controller below another presented view controller (like WhatsApp when you open camera and press gallery).
I tried many things but none worked ..
Use child view controller and set view of that added child view controller at the top of hierarchy. It will be top most element, so actual background of this view will be obscured, but that's the way to go.
//code inside UIViewController class
func addViewControllerAtBottom() {
let newVC = NewVCType() //just instantiate it
addChildViewController(newVC)
view.insertSubview(newVC.view, at: 0) //at 0 means it's first rendered, all others will be on top of it
}
You can reproduce this behavior by doing the following :
First, create a NavigationController with a root ViewController :
let navController = UINavigationController(rootViewController: firstController)
Then, present this navigationController with animated: false and in the completion of the present method, push your second ViewController, still with animated: false (to avoid weird animations) :
present(navController, animated: false) {
navController.pushViewController(secondController, animated: false)
}
Here you go, you got a new navigation with 2 UIViewController, like WhatsApp.
Full code, wrapped into a button's action :
#IBAction func buttonTapped(_ sender: Any) {
let navController = UINavigationController(rootViewController: firstController)
present(navController, animated: false) {
navController.pushViewController(secondController, animated: false)
}
}
My initial view controller is created from Storyboard. It has a button which adds a UINavigation :
let navigationController = UINavigationController(rootViewController: ListViewController)
self.presentViewController(navigationController, animated: true, completion:nil)
appDelegate.window?.rootViewController = navigationController
ListViewController has a UICollectionView. Tapping on cell (which I subclassed) calls a delegate method back to ListViewController and presents another View with UICollectionView:
let detailedListViewController = DetailedCollectionViewController(collectionViewLayout: UICollectionViewFlowLayout())
self.navigationController?.pushViewController(detailedListViewController, animated: true)
Inside this DetailedCollectionView each cell has a button to show a full-screen SFSafariViewController. So as before, using delegate I'm trying to show it like this:
SFSafariVC = SFSafariViewController(URL: urlToLoad)
SFSafariVC.view.frame = self.view.frame
self.presentViewController(SFSafariVC, animated: true, completion: nil)
By doing so, I can see the SFSafariView working correctly, but I get the message:
Warning: Attempt to present < UIAlertController: 0x7fcd96353e20 > on
< UINavigationController: 0x7fcd948a0600 > whose view is not in the
window hierarchy!
I tried changing self.presentViewController to self.navigationController?.presentViewController but still the same error persists..