Since iOS15 the QLPreviewController added some additional BarbuttonItems on the top-right side when I'm previewing a PDF-file. It added a search-button and a draw-button (the one where you can draw lines on it). It's actually pretty cool that they added it, but the Share-button is now missing, since it doesn't fit there anymore.
At least on my iPhone, because on my iPad there's enough space for three of them.
Now normally, they show the barbuttonitems that don't fit on an additional navigation bar at the bottom, but in my App the whole navigationbar at the bottom doesn't show up at all. However, it does show up if I tap it once in the middle--which makes everything but the document disappear--and then tap the middle again. Then the bottom navigationbar suddenly shows up as well, including a perfectly working Share-button.
Screenshot of the issue:
I found out that my problem was the UITabbarController at the bottom. Once I tried the functionality to hide the tabbar on push, the bottom navigationbar with the Share-button is immediately shown. It's still a bug and I'll file one at Apple, but the current solution is quite okay.
Here's the code:
let vc = OverviewsQuickLookViewController()
vc.dataSource = self
vc.hidesBottomBarWhenPushed = true
self.navigationController?.pushViewController(vc, animated: true)
I hope this might help someone!
Screenshot of the solution:
Related
I am new to swift/ xcode and am working out of a book which doesn't explain very well. I have a form layout inside a scroll view that works very well in the simulator no matter what orientation the emulator is in. (took me awhile to get that right). Now I have to add a navigation item to the scene, and it works well until I add a title into the navigation item. After the title is added, the safe view area shrinks in width. Weirdly enough though, when I run the emulator again, everything looks fine on the emulator. Surely I am doing something wrong. Can anyone point me in the right direction please? I would greatly appreciate it.
I have tried using suggested constraints and it gives me a whole bunch of red lines on margins.
Paste a copy of the original view controller next to itself, let's call it controllerCopy. Add your title to the original view controller, delete all its views when they mess up. Copy the views from controllerCopy and paste them into the original controller.
I have been working on a project where I needed to show list of images with zoom / swipe feature as presented view modal. I created custom ImageViewer using ContainerView in which I have added UIPageViewController. And on demand, I added ImageViews over the UIPageViewcontroller's view. When user taps to imageView, the top UINavigation gets shown and hidden on toggle basis.
Everything worked as expected in iOS 7.1 and less. However when I tested the functionality in iOS 8 devices and simulator, the ImageViews were not added to UIPageViewController in TopLeft ( beneath UINavigationBar ). It is added below the NavigationBar as shown in bug_iOS_8.png below.
Once I touch the buggy view, it repositions itself to correct position as in image expected.png below.
I have created and tested the issue in sample project and it seems it is bug in iOS 8 itself with UIPageViewController. I went through couple of questions regarding weird behavior of UIPageViewController too. Please check the sample app here and kindly let me know if anyone has any hints on what is going on.
Thank you for your time and help.
PS: BTW I am using following version of Xcode.
Update 1:
I have tried as per the pin suggestions. However, the problem aligning is with the main view of UIViewController rather than its subview. In below image, Yellow is main View of UIViewController and red one is added subview, I added pin to "red" on in reference to superview "yellow" one. Please check following screen shots.
On startup.
After touch on screen.
Kind Regards,
check in storyboard for particular viewController and make sure Extended Edges >> Under top bars is not selected.
I had a very similar issue and the way i fixed it was select the view being added to the UIPageViewController in the storyboard and selected the pin options. Below in the image you can see the Constrain to margins options, make sure you unselect that. Also when choosing what view to pin it to make sure you select the superview and not the Top Layout Guide.
Curious are you hiding your nav controller like this?
[self.navigationController setNavigationBarHidden:YES];
also if you have multiple Nav controllers, you might need to check you are referencing the correct one.
If you want it to be hidden when you present the ViewController you should move it to
-(void) ViewWillAppear{
}
I have a simple UIViewController with a simple view. As a result of a user interaction, a new UINavigationViewController is instantiated and its view is being added as a subview to the view of the UIViewController. This takes place as part of an aninmation transition (flip).
This works quite well and the first view is flipped over in favor of the second view. But when the animation comes to an end (the UINavigationViewController's view fills the whole screen) the navigation bar items jump, i.e. the title jumps about 5-10 pixel from right to left, the buttons' jump depending on which side (left / right) they are positioned. During the animation you can see that the buttons are misplaced and that the jumping movement is kind of a repositioning.
Could anyone tell me the reason for this and give me some advice how to avoid this?
This is a little late, but there's no accepted answer and I've encountered this issue even fairly recently (albeit with an older app running on iOS 8).
If you encounter this issue and also see a warning along the lines of the following, it may be that you haven't properly set your root view controller in the app delegate:
Application windows are expected to have a root view controller at the
end of application launch
Modifying the app delegate as follows recently remedied the issue for me:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
// Other logic goes here
// ...
self.window.rootViewController = myRootViewController; // This was missing
[self.window makeKeyAndVisible];
return YES;
}
(I previously had some nearly-equivalent code that was setting up the view so everything displayed correctly on launch, but was not specifically setting the window's root view controller.)
I know it's annoying, but I have no idea why it happens, but in my experience, it happens in one of two cases:
Translucent navigationBar: maybe it had something to do with the fact that a translucent navigationBar sometimes sets a view's wantsFullScreen property (the view will then extend below the navigationBar).
During transitions: as you have described.
To avoid it, maybe a nice animation to fade it on an off screen before and after animation so as not to give the illusion of low quality.
OR
In viewWillAppear, assign the pixel value it's jumping to the navigationBar's origin.y. It's sad that it happens, but sometimes it just can't be fixed any other way.
This can be caused by partially-corrupt PNGs used for navigation bar buttons when the UIImages are resizableWithEdgeInsets:. If you're using custom button item images, try exporting them again using techniques known to produce reliable images (See blog posts by Marc Edwards at Bjango for a good start).
I recently had a problem that sounds identical to what you were experiencing. I found that using the [UIView performWithoutAnimation:^{}] block inside of transitionWithView fixed it.
During custom segue transition, view's navigation bar items are misplaced.
I have a UISearchBar (with UISearchDisplayController) as title view of UINavigationBar. There are also two buttons on either side of the searchbar within the navbar.
When clicking on UISearchBar, it becomes wider and covers the button on the right of it.
How can I stop it from becoming wider?
Things tried but didn't work -->
The widened search bar then becomes the original size if the device is rotated.
So, tried calling [searchBar setNeedsLayout] in -searchBarTextDidBeginEditing
All different auto-resizing mask options in IB
Edit: Didn't mention, but this is on iPhone (as we can put searchbar inside toolbar in iPad..)
Actually, taking hint from this answer if the search bar is put in UIView of desired size then this is set as title view of NavBar, it doesn't go wider !
But... Since you can't make cancel button to show/not show as you wish, I realized it's not so useful.
(As seen in this question/answer etc)
I'm trying to pop up a UIWebView on iPad with a web site that is specifically sized for the iPhone (320x480). I want the web view to be centered, and transition in using a zooming animation. Other apps have this functionality, but I can't seem to find out how to do it. I've tried various combinations of presentation & transition style, but no matter what I do, the web view takes up the entire screen and slides vertically to cover the screen. I've made the web view 320x480 in IB, and am using UIModalPresentationStyleFormSheet, which should make it at least slide up into the center of the screen using a small window, but that is not occurring.
anyone know what's wrong?
Are you setting the property of the parent UIViewController or the modal UIViewController? Because you should be setting the properties of the modal UIViewController before presenting the controller instead of the parent.
This might be no help at all because you're doing the right thing, but it was the first error I made when starting to use MVCs.
maybe any of the autosize property is set. just do one thing bind your webview with the code and through code try to set the frame. Hope it will work as it worked many times to me when i faced similar types of problem.
hAPPY cODING...