dismissViewControllerAnimated: not animating - ios

I'm working with SVWebViewController. When I present the view controller here
SVModalWebViewController *webViewController = [[SVModalWebViewController alloc] initWithAddress:address];
webViewController.webDelegate = self;
[self presentViewController:webViewController animated:YES completion:nil];
The view controller slides up from the bottom, as expected. However, when the view controller is dismissed, calling
[self dismissViewControllerAnimated:YES completion:nil];
The view controller simply disappears. No slide animation down. Any thoughts?
EDIT
It turns out a lot of presentation animations aren't displaying correctly in the application. Some pushes on the navigation controller aren't sliding in or sliding out (but some are). They just appear.

[self dismissViewControllerAnimated:YES completion:NULL];
This should be in SVModalWebViewController not SVWebViewController
EDIT: Instead of modally segueing to the SVWebViewController you should push:
SVWebViewController *webViewController = [[SVWebViewController alloc] initWithAddress:#"http://google.com"];
[self.navigationController pushViewController:webViewController animated:YES];
And instead of dismissing you should:
[self.navigationController popViewControllerAnimated:YES];

From SVWebViewController viewWillAppear::
SVWebViewController needs to be contained in a
UINavigationController. If you are presenting SVWebViewController
modally, use SVModalWebViewController instead.
Is your main view controller contained in a navigation controller? If not, this could possibly cause the other animation issues you're facing.
The dismissal should be from the displayed modalViewController.

It happens to me when the destination view controller loads a big picture or background

Related

Build Hierarchy in Tabbarcontroller with Navigationcontroller

I have a Tabbarcontroller filled with 5 Viewcontrollers and Navigationcontrollers as I did here:
[self addChildViewController:VC1];
[self addChildViewController:NavigationController;
[self addChildViewController:VC2];
[self addChildViewController:VC3];
[self addChildViewController:VC4];
Now the thing is, that pressing a button on my Tabbar gets me to every ViewController easily, where I can present Xib-Files etc.
But now I want to have a Navigationcontroller, which is shown when pressing a button on my Tabbar. This Navigationcontroller itself has several Viewcontrollers.
I tried this to present my first Viewcontroller inside my Navigationcontroller (this code is from the Navigationcontroller.m):
- (void)viewDidLoad {
[super viewDidLoad];
[self addChildViewController:VC5];
[self presentViewController:VC5];
}
This expectedly did not work and gave me: Application tried to present modally an active controller.
Is there a good way to achieve such a specific goal? I'm struggling with this problem. Thanks in advance!
edit: This is how I set it up in my storyboard. In my programmatic approach the first view controller is not shown.
Instead of adding the VC5 view controller to the NavigationController as a child (unless it's meant to be a child?) add it as the root view controller when you add the NavigationController to the tab bar.
For example in your tab bar code:
[self addChildViewController:VC1];
UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:VC5];
[self addChildViewController:navigationController];
[self addChildViewController:VC2];
[self addChildViewController:VC3];
[self addChildViewController:VC4];
Apple docs on UINavigationController are here: https://developer.apple.com/library/ios/documentation/UIKit/Reference/UINavigationController_Class/#//apple_ref/occ/instm/UINavigationController/initWithRootViewController:

Dismissing previously presented modal view controller before currently visible one

I have 2 UIViewController's presented with [self presentViewController:viewController animated:YES completion:nil];, I want to dismiss the first one of them, without animation (It's not visible to the user anyway) and when the second one (currently visible) will be dismissed, the user will see the parent view controller who present them both.
- Parent
- First -> Dismiss first without animation
- Second -> Dismiss second with animation
How can I do that?
With your current view controller hierarchy if first view controller will be dismissed it will dismiss second view controller automatically. If you don't want that behaviour than make parent present second view controller. You can do that from first view controller by using [self.presentingViewController presentViewController:secondViewController animated:YES completion:nil]
Why do you want to do this?
You should do it like this for cleaner view hierarchy and better user experience:
Present first view controller :
[self presentViewController:viewController1 animated:YES completion:nil];
Dismiss first & present second view controller :
__weak MyViewController *aBlockSelf = self;
[self dismissViewControllerAnimated:YES completion:^{
[aBlockSelf presentViewController:viewController2 animated:YES completion:nil];
}];

Dismiss and Present same view controller

i have a view controller and i need to dismiss it and present it back in same time.
i had tried dismiss it and call back the view controller but not working.
[self dismissViewControllerAnimated:YES completion:nil];
UIStoryboard *storyboard=[UIStoryboard storyboardWithName:#"Main" bundle:nil];
ExpandViewController *expandView=
[storyboard instantiateViewControllerWithIdentifier:#"ExpandViewController"];
expandView.delegate=self;
[expandView setEventDict:dict];
[self presentViewController:expandView animated:YES completion:NULL];
I am not exactly sure what outcome/functionality you are looking for in your question, but #matt is correct. However, you may be looking to have this happen seamlessly. Therefore you could use child view controllers instead of presenting the view controller using the [self presentViewController:VC animated:animate completion:nil] method.
Adding child vc:
[self addChildViewController:myVC];
[self.view addSubview:myVC.view];
[myVC didMoveToParentViewController:self];
Removing child vc:
[myVC willMoveToParentViewController:nil];
... remove subview.
You can set up a delegate between the two controllers to tell the parent when to dismiss the view to make things easy. You can also add the subviews at different indexes using [self.view insertSubview:myVC atIndex:index] or the other possible functions such as the insert above subview etc, to have one subview be added before dismissing the other to give a more seamless transition.
Hope this helps!
You can't present a view controller until the currently presented view controller has finished being dismissed. You won't know this has happened until the completion handler from your dismissal is called. Your mistake is that the completion handler is nil. Instead, provide a completion handler (in your first line), consisting of the remaining lines of your code. Thus, they will execute after the dismissal finishes.
[self dismissViewControllerAnimated:YES completion:^{
// ... the rest of your code goes in here ...
}];

iOS - Display a UIViewController as fullscreen from within a UINavigationController

I need to present a UIViewController as fullscreen (Above all other views). This UIViewController is currently inside a UINavigationController.
Is it possible to have the UINavigationController present it's current top UIViewController modally?
From within the UIViewController I would like to fullscreen, if I use:
[self.navigationController presentViewController:self animated:YES completion:nil]
Nothing seems to happen.. Is there a reason this is not allowed?
EDIT
I have posted another question in which I have solved this issue for every scenario. (Code snippet included there)
Is it possible for a UIViewController to present itself?
If you want to present a view controller modally, you should be presenting it from a different view controller. The modal presentation will show the presented view controller over the navigation controller (in fullscreen)
For instance,
UIViewController *firstVC = self;
UIViewController *secondVC = <the VC you want to present>
[firstVC presentViewController:secondVC animated:YES completion:nil]
Or just use a modal segue in Interface Builder.
You should use this :
[self presentViewController:self.navigationController animated:YES completion:nil];
to show a controller.
Assuming that the view controller you want to show modally is the navigation controllers top view controller
[self presentViewController:self.navigationController.topviewcontroller animated:YES completion:nil];
Hope this helps

UIImagePickerController dismiss animation

When I try to present a UIImageViewController from the table view, the starting animation is a vertical cover, which I want, but when the controller gets dismissed, the animation is a Horizontal Flip. I tried [self presentViewController:self.imageController animated:YES completion:nil]; and [self.navigationController presentViewController:self.imageController animated:YES completion:nil]; but the dismiss animation is the same in both cases. When I remove the middle view controller (i.e just navigation controller with the tableview as its root), the dismiss animation is correct (cover vertical).
Anyone know how I can get the correct dismiss animation with the current storyboard configuration?
You can try this method:
[self.navigationController pushViewController:self.imageController animated:YES];

Resources