I'm trying to place a table view inside of a basic view controller without any padding on the top and nothing I've tried has worked, no matter what I do there is a gap up top. I placed the following code in my viewDidLoad() for the view controller:
if #available(iOS 11, *) {
tableView.contentInsetAdjustmentBehavior = .never
} else {
self.automaticallyAdjustsScrollViewInsets = false
}
I've gone into storyboard and disabled those settings as well manually:
I do have custom cells I'm not sure if that matters, I do add insetting to the cells but even when I remove that code I have that gap.
Here's the code I customized for my cells:
override func layoutSubviews() {
super.layoutSubviews()
contentView.frame = UIEdgeInsetsInsetRect(contentView.frame, UIEdgeInsetsMake(cellSpacingHeight, 0, 0, 0))
}
I've spent a couple hours googling around and I can't figure it out. I'm using the latest swift and Xcode to build this. I even tried to print the values for the tableView's content inset and it came up as all 0s. Does anyone know why I still have the offset or inset up top in my table view?
Wow okay so I finally figured it out, I had set the table view style to Grouped at some point instead of Plain. Once I made it plain, everything worked, I hope this might help someone else in this position!
I recently started using Swift and Xcode and I'm not sure why the bottom constraint for the main view in my viewcontroller is shifted up for iOS 10 devices, whereas it works correctly on iOS11.
I've had something similar to another application where the top view constraint was shifted down for iOS10 but I managed to fix it by overriding viewDidLayoutSubviews() and resetting constraints for devices lower than 11.
Unfortunately, the trick doesn't seem to work this time. If I override the bottom constraint, the bottom anchor is corrected but the top one gets pulled up and part of the view gets hidden by the navigation bar.
I've been trying to find a solution via previous questions (most of them were for the top gap and I haven't managed to modify them to work for the bottom gap I'm getting) and Google, but no luck.
I've attached a screenshot of the issue for clarity. iOS11 on the left, iOS10 on the right.
The override i've tried:
override func viewDidLayoutSubviews() {
super.viewDidLayoutSubviews()
let margins = view.layoutMarginsGuide
NSLayoutConstraint.activate([
graphView.leadingAnchor.constraint(equalTo: margins.leadingAnchor),
graphView.trailingAnchor.constraint(equalTo: margins.trailingAnchor)
])
if #available(iOS 11, *) {
// safe area constraints already set
} else {
let standardSpacing: CGFloat = 0.0
NSLayoutConstraint.activate([
contentView.bottomAnchor.constraint(equalTo: bottomLayoutGuide.bottomAnchor, constant: standardSpacing)])
}
And the result:
You need to set these 4 constraints to your Main View
Prior to iOS 11, the UINavigationBar buttons and title are being displayed correctly.
Yesterday I downloaded Xcode 9 with iOS 11 and, after building and running without doing changes, both navigation buttons and the title are not being displayed anymore. It shows the UINavigationBar with the correct color I am setting but nothing else.
I tried on different simulators and also I updated an iPhone 7 to iOS 11 beta 5 and the result is the same. Nothing being displayed.
Has someone faced the same problem? I have tried changing different parts of the code and storyboard but nothing affects...
EDIT with screenshots: http://imgur.com/a/Hy46c
Thanks in advance!
For Xcode 9, it appears that it is no longer enough to just set the frame of a custom view that is being injected into the navigationItem titleView. The intrinsic content size of your titleView now must be overriden and set as well.
Here's the code, adjust the width and height to suit your needs:
class NavigationBarTitleView: UIView {
override var intrinsicContentSize: CGSize {
return CGSize(width: bounds.width - 100, height: 50)
}
...
}
use sizeToFit()! ios 11 automatically sizes it, but ios 10 does not
I had the same issue and for me it was caused by subclassing UITabBarController
Did you set "window,rootViewController = ..." in your code ? Try remove it can fix your problem
I had the same problem in my project where the titles were missing from the navigation bars after updating to Xcode 9 and iOS 11. I solved it by going to the navigation bar of my navigation controller on the storyboard, keeping the Prefers Large Titles unchecked and changing the Title Font under Title Text attributes, which was set by default in Xcode 9 to System 0 to some other option like Caption 1 or Headline. I also changed its children viewcontrollers' navigation bar settings For Large Title to Never instead of Automatic or Always.
I found this code in some inherited codebase, commented it out and everything worked as it did before iOS 11.x.
if (appDelegate.window.rootViewController != self) {
appDelegate.window.rootViewController = self;
}
Try to use:
UINavigationBar.appearance().titleTextAttributes = [NSForegroundColorAttributeName: UIColor.white]
or without appearance proxy setting directly to the current navigationBar...It solves my problem, should Apple changed titleText to clear as default in iOS11...?
Also use this if you want the same look as iOS 10:
if #available(iOS 11, *) {
nav.navigationBar.prefersLargeTitles = false
}
Had the same issue with the navigationButton not displayed. I solved it by setting the renderingMode to .alwaysOriginal. (I didn't use templates)
Swift 3 code:
var img =R.image.smt()?.withRenderingMode(.alwaysOriginal)
I had that same issue and none of the above fixed.
Although, #Justin Vallely lead to me fix it.
All I did was to set a width on the titleView and everything worked just fine!
EDIT:
Every UIViewController has a navigationItem property, and every navigationItem has an optional titleView.
For reference: https://developer.apple.com/documentation/uikit/uinavigationitem/1624935-titleview
In my case, I was using a custom titleView and I think that's the cause of the problem, since Apple changed the API to support the new navigation bar layout.
Based on the Justin Vallely's comment I've reworked the code a little to ensure proper sizing of the view:
class NavigationBarTitleView: UIView {
private var width: CGFloat = 0.0
private var height: CGFloat = 0.0
override init(frame: CGRect) {
super.init(frame: frame)
width = frame.width
height = frame.height
}
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
}
override var intrinsicContentSize: CGSize {
return CGSize(width: width, height: height)
}
}
In my particular case I've used this view as a container to UISearchBar and now it is well sized and worked perfectly with Swift 4 & iOS 11, just as it used to work on previous iOS & Swift versions
We were facing the same issue where the navigation bar color is there but the title and the buttons are not showing up. We have double checked the bar was there by triggering a navigation bar background color change 2 seconds after the navigation controller showed up on the screen, so we know the navigation bar was there and we were adding buttons to the correct instance. Same as the OP, this issue only appears on iOS 11 and not iOS 10, and we are using Swift 3.2 running Xcode 9.1.
After hours of fiddling around, it turns out that presenting a navigation controller, then making it as the UIApplication.shared.delegate.window.rootViewController (after the present animation) caused the issue in our case.
If you just skip the present view controller and make the navigation controller as the root view controller, then everything works fine. Of course, you lose the present animation in the case.
How to debug the following issue? Is there a way how to work around this issue?
There seems to be a bug in iOS 10.2 and below when laying out a multi-line UILabel.
I have a fairly simple UIView subclass which I use in both app and notification content extension, that looks like this:
In the main app, everything is laid out just fine:
When shown in notification content extension on iOS 10.2 and below, the layout is broken. But only when the text is long enough to be broken into multiple lines. Seems like iOS can't calculate correct height of the whole view:
However, this issue seems to be fixed on iOS 10.3 and newer:
I started experimenting with the subviews, specifically by setting fixed height constraints.
Turns out, it was not the label(s) that caused the issue with calculating overall height but the aspect ratio constraint (width:height) on the topmost view.
Programmatically calculating height based on the view's width and setting a height constraint for the affected view helped to fix the issue:
public override func updateConstraints() {
super.updateConstraints()
if #available(iOS 10.2, *) {
imageContainerHeightConstraint.isActive = false
} else {
// FIX: multiline label / aspect ratio / autolayout bug in iOS < 10.2
let ratio: CGFloat = imageContainerAspectRatioConstraint.multiplier
imageContainerHeightConstraint.constant = round(bounds.width/ratio)
imageContainerHeightConstraint.isActive = true
}
}
I'm having trouble aligning an iOS 8 widget all the way to the left. It seems that setting the x origin to 0 still keeps a certain amount of space between the left edge of the screen and my first view.
I'm not sure how Evernote does this, but it seems that they have it figured out. Any suggestions? I also tried setting the x position programmatically to no success.
Here the answer:
// MARK: NCWidgetProviding protocol methods
func widgetMarginInsetsForProposedMarginInsets(defaultMarginInsets: UIEdgeInsets) -> UIEdgeInsets
{
return UIEdgeInsetsZero
}