I have a tableview that worked fine up to iOS10. With iOS 11 adding a sublayer using
tableView.layer.insertSublayer(gradient, at: 0)
in viewDidLoad causes the cell contents to not appear. The tableview appears normal however in the view debugger. This is what led me to suspect the layers because the view debugger does not render layers (afaik).
I don't know if this is a bug in the iOS 11 TableView. I know not really a question but I'm interested in any comments you might have.
Related
While compiling a couple of projects with XCode 12 (beta 5 is the latest version at the moment) and running them on iOS14, I've noticed that UIButton, UITextField, and many other selectable objects are not responding to user input when inside of a UITableViewCell.
In some cases, it is possible to work around the issue by bringing the object to the front (object.bringToFront()), but this is not working for all the cases I'm facing. I've also noticed an empty view (layer) on top of the components of the cell when I use the "Debug View Hierarchy" Tool. This view is not present on XCode 11 builds. Is this some new cell configuration that I'm missing? Is there a standard way of disabling this behavior or will I have to be hacky to fix this?
PS: The issues were not present on the same projects when compiled with XCode 11 (or previous), even when running on iOS14.
All the select response issue may caused by adding subview on UITableviewCell. The right way is add on UITableViewCell.contentView, check it first.
I'm posting here because I'm completely lost on this one.
I've searched all over the web, tried a lot of things myself, and searched weeks on this bug, but I can't find it.
So ever since iOS 11 (doesn't happen on iOS 10), everytime I press a button that activates the "show" segue in a UINavigationController the animation shows some weird padding at the top.
This padding disappears when the animation is finished.
I've changed the backgroundcolor of the superview to a red color, and the space you can see is indeed from the superview itself, so my guess is the whole UITableView is being moved down for some reason, although I'm not sure what exactly is the cause here.
(I'm using storyboard and AutoLayout constraints)
Another thing I noticed is that the spacing/padding you see is different on the iPhone X compared to the other devices (my guess is that it's the same height as the (non)safe area at the top? Again, not sure.
I don't think code is necessary to be provided here, as I wouldn't really know which part causes this behaviour (and there's a lot of code that I can't share for reasons..).
Any suggestions/help on how to fix this would be deeply appreciated!
Here are some examples:
iPhone X running iOS 11.1 (also happened on 11.0)
iPhone 8 gif
EDIT: I should add, some things I already tried:
tableView.contentInsetAdjustmentBehavior = .never
Setting headerviews to 0
tableView.setContentOffset(0, animated: false)
Playing with the translucency settings of the UINavigationBar
AutomaticallyAdjustContentInsets is set to false
So, as suggested by Spenser-Arn, I played around with the constraints and the Safe Areas, turns out, the safe areas where the cause of the issue.
Hope this helps other people as much as it helped me, and a big thankyou to Spenser-Arn!
I have been working on this app for months now and from as far back as I can remember I have never had an issue with segues. The code is unchanged in terms of calling performSegueWithIdentifier but since my recent update to Xcode 7 and iOS 9 I have not been able to tack this issue.
I have tried:
Deleting button and creating new button w/ segue link
Using a direct segue from button to view, without the use of performSegueWithIdentifier
Connecting button to new blank viewController
When I press the button, no initial load functions are called on the destination VC (Ex: ViewDidLoad, ViewWillAppear, etc). When I connect it to a blank view, the segue works fine with the same code in place.
Since the code never stops, or breaks, and just seems to "freeze" in place while still running on Xcode I can't seem to even narrow this down to whats causing the issue. I have a similar segue that is also called from another button on the same ViewController that has no issues whatsoever.
Any thoughts on the matter are greatly appreciated!
EDIT: I have narrowed the issue down to the UITextView's causing the problem. Once the Text Views were removed the page loads fine via segue. I wonder what changed between iOS 8 and iOS 9 in terms of UITextView as I will have to remove the text views and completely re add new text views.
So basically the segue was freezing because of the UITextView's I was using in the destinationViewController. The following fixed the issue:
Delete all UITextView's
Add new UITextView's
you must leave the default lorem imposed text and change this programmatically in the viewDidLoad()
This was the fix for me, and from the research I have done on the issue it seems this is a bug in iOS 9 and Xcode 7.
Cheers!
NOTE: Removing the text in the UITextView (or making it longer then ~12 characters) is sufficient to work around it, no need to delete and recreate them. This is fixed in Xcode 7.1.1 and later.
I ran into the same issue and the fixes in this post (Xcode 7 crash: [NSLocalizableString length] 30000) solved the issue for me.
The first is to enable a localisation other than the base for the storyboard (see https://stackoverflow.com/a/32688815/3718974)
The second is to turn off the base localisation (see https://stackoverflow.com/a/32719247/3718974)
I think I have the same problem: I have a UITabelView with cells created from a nib file, when a user tap a cell this method is called:
and when I have the following method prepareForSegue:: the application crashes:
if I delete the line 129 Everything is ok , the method prepareForSegue:: open the right view and the label contactName is shown with its default text.
If I modify the method as follows prepareForSegue:: get exactly what you expect, without having any type of error:
let me know if you also get the same result
Any one who is facing this issue, i solved it by turning off the "Optimize rendering for windows scale" option in Debug of simulator window. I already had tried all of the above answers but could not solve the issue.
In the method in the first viewController where you activate the segue, do you have beginIgnoringInteractionEvents anywhere? If so the screen you segue to will be frozen and will ignore interaction events like you describe. If this is the case you can fix this by adding an endIgnoringInteractionEvents method before your segue method:
UIApplication.sharedApplication().endIgnoringInteractionEvents()
self.performSegueWithIdentifier("editItemToMyGearSegue", sender: self)
I realize this is an old topic, but appears to be still relevant. I was facing the same problem in Xcode 9, iOS11. My UITextViews are embedded inside UITableViewCells. Same symptoms as described here. The tricks with default text and placeholders did nothing for me, but I solved it by turning off the scrolling indicators for the text view in the xib. They were on by default, I guess, though unused.
Edit: this is probably an important detail... the views that were hanging all had an image NSTextAttachment in the attributed string of the text view. I think the image was wider than the available table cell content. With scrolling turned off, they appear to downscale.
I have an UITableView with three dynamic rows. When displaying the UITableViewController the first time everything works fine. After a rotation the rows which have a data in it get an indentation despite I set setLayoutMargins to zero. I cannot reproduce this issue in another project until now. It is only appearing in iOS 8 but but only on one table. The same source for the table is working in a test project without problems. The only difference here is that it is in a container with some other views.
I checked auto layout constraints, the rotation methods, commented things out - all without success. The change of the indentation occurs between willRotateToInterfaceOrientation and didRotateToInterfaceOrientation or after viewWillTransitionToSize. I even updated to iOS 8.1 with the same results.
Has someone expeerienced a similar behavior?
PS:
What I've also noticed that when setting the layout margins to zero on iOS 8 the animation is not as smooth as it would be with the default values (with indentation). On iOS 7 the animation is always smooth.
EDIT:
I tracked some things down. If a UITableViewController is embedded into an UINavigationController the indentation happens on rotation. If you rotate further it goes back to it's set indentation (no indentation in my case).
If the UITableViewController is embedded into a container (and this container is in a navigation controller) than after the rotation the cell get it's default indentation back. If you rotate further this behavior stays the same (always indented).
Are some events not send to the child view controller or none of you uses a UITableViewController embedded into an UINavigationController?
In my opinion it is a iOS 8 Bug or a Xamarin Bug. Perhaps one other could verify if it is the same with his installation. I'm using Xamarin Studio 5.5.2 with Xcode 6.1.
One ugly solution to this is this:
public override void DidRotate (UIInterfaceOrientation fromInterfaceOrientation)
{
base.DidRotate (fromInterfaceOrientation);
// otherwise cells are indented! iOS 8 Bug?
TableView.ReloadData ();
}
One could use reloadData or reloadSection in didRotateFromInterfaceOrientation, despite it is a deprecated function. But there is no viewDidTransitionToSize and I also have to support iOS 7.
Edit:
Another solution I have come up with is to draw a custom separator line. This only works for iOS 8 and would answer the question (despite I've another issue on iOS 7 where this approach doesn't help).
I have a UIViewController subclass called FLProfileViewController that contains a UICollectionView. The view of FLProfileViewController is added as a subview to another UIViewController's view. The problem is that the UICollectionView doesn't render.... only if I execute the code from XCode 5 (final release). Even when running the same project from XCode 5 DP 6, the UICollectionView is rendered.
What is more, another instance of the same class is actually rendered when adding its view to a different UIViewController of the project.
Debugging the code, I see that numberOfSectionsInCollectionView: is called and returns 1, collectionView:numberOfItemsInSection: is called and returns 47.
But collectionView:cellForItemAtIndexPath: and collectionView:layout:sizeForItemAtIndexPath: are not being called.
Has anyone find a similar problem? Any ideas about what could be going on?
I have found the problem.
My UICollectionView is shown in the first screen of the app. To avoid showing it empty I have a fake app splash screen that extends the default one. The fake splash is shown with presentViewController:animated:completion: and doesn't disappear until I receive the data from the server.
The problem seems to be that with the final released version of the iOS7 SDK, the UICollectionView is not rendered if it is not visible to the user. In my case I was rendering the UICollectionView while the fake splash screen was still on top.
As I said, my solution worked in iOS6, and the iOS7 version shipped with XCode 5 DP 6.
Anyway, this might help someone else.