My custom AVPlayerViewController won't autorotate if the previous view controller has been instantiated. If I present the AVPlayerViewController, it rotates, and if I present the previous view controller, it rotates. Here's my code for instantiating a view controller :
let vc = self.storyboard!.instantiateViewController(withIdentifier: "MovieVC") as! MovieVC
vc.movie = self.movie
self.navigationController?.pushViewController(vc, animated: true)
In this situation I am creating a copy of the current view controller with different information. If there is no way to fix the autorotating error, is there a different way to present the same view controller?
The problem is that you are not presenting the view controller. You are pushing it. That means that the navigation controller itself is in charge of rotation, so you don't get any special autorotation for this view controller.
The only way to give this view controller its own power over autorotation is to present it:
self.present(vc, animated: true)
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.
It's easier to show you a drawing and then explain.
Dashboard Storyboard
I have 2 separate UIViewControllers (i've included just one in the drawing, the other is irrelevant) embedded in container view called ContainerViewController.
Post Storyboard
NewPostViewController shows a UIButton that presents TextPostViewController. As you can see, all of them are embedded in UINavigationControllers. Now, once the completion block of the new post is being called, I have to present the ContainerViewController and it needs to handle it's own logic. The problem is that it's embedded in UINavigationController and once I present it, the UITaBbar is hidden.
I tried to do this:
self.performSegue(withIdentifier: "TextPostToNavContainerVC", sender: nil)
The transition is successful but I'm losing the UITabBar, even though in the DashboardViewController and the ContainerViewController I called:
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
tabBarController?.tabBar.isHidden = false
}
What am I doing wrong or is there are better way to do that?
You should instantiate the tab bar controller. not the view controller.
Imagine you're putting a initial view controller ahead of your tab bar controller. Making your tab bar not being pushed
If I undestand it correctly.
You are doing this
Segue connect to a view controller
But you should actually do this Segue connected to a tab bar controller
You can try to add it as a child to control it's frame like this
let textPost = self.storyboard?.instantiateViewController(withIdentifier: "containerID") as! TextPostToNavContainerVC
textPost.view.frame = CGRect(x:20,y:0,width:self.view.frame.width,height:self.view.frame.height-50)
self.view.addSubview(nvc.view)
self.addChildViewController(textPost)
textPost.didMove(toParentViewController: self)
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 want to move to another view controller without using navigation controller, segue, storyboard and animation
You can use presentViewController like this
let controller = self.storyboard?.instantiateViewControllerWithIdentifier("YOUR_VIEWCONTROLLER_ID")
self.presentViewController(controller!, animated: false, completion: nil)
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.