Add UIView in ScrollView, pin it 0,0,0,0 to all 4 sides and center it horizontally and vertically. If you check the debug logs, it should include a system-added constraint called UIView-Encapsulated-Layout-Height and other constraints removed by the system. Place a UIView as content view (please remember this term. We're now able to jump straight into the conflicting view with a human-readable description of the error: "Height and vertical position are ambiguous". Type-1 Diabetes; Type-2 Diabetes; Prediabetes; Pregnancy & Diabetes / Gestational Diabetes(GDM) Diabetes and Heart; Diabetes and Kidney Disease; Diabetes and Low Blood Sugar SnapKit，一个经典的Swift版的第三方库，专门用于项目的自动布局，目前在github上的stars就高达9340颗星，这是一个不小的数字，亦足以证明它存在的非凡意义和作用。作者认为，在iOS开发（swift）中，它是用于项目最优秀的自动布局的必选库之一。 Next, we will do the same for the UIView. Storyboard上でUIScrollView+AutoLayoutを使うと下のようなエラーが出る事があります。 今回はその対処法を調べました。 Xcodeのバージョンは13です。 参考にしたのは下URLです。 qiita.com まずはプロジェクトを作ってMain.storyboardにUIScrollViewを配… UISlider Class (UIKit) | Microsoft Docs The value of this property is true if the view's location is incompletely specified, false otherwise. There is no correct way to set UI layout. Unfortunately, even if we're using autoLayout and making sure we don't have any ambiguous constraints within theFooterView, the system can't correctly calculate its size so it has a height of 0. How do I resolve this? (Inherited from UIView) Hidden: Specifies whether the UIView displays or not. There is another way to check the height of a cell with . Thanks a lot for you help. (Inherited from UIView) IgnoresSiblingOrder The Builder interface does not give me any warnings about ambiguous restrictions [cell hasAmbiguousLayout] returns NO. My cell has, among other things, an image set to 48x48, so the size (0, 0) should not satisfy all the restrictions. Programing AutoLayout is a kind of philosophy in the iOS development. To calculate this you have to take in consideration origin Y (start) and item height. My problem is that Xcode keep giving me warning because the size and the position are ambiguous. (lldb) e (void)[0x147de590 setBackgroundColor:(UIColor*)[UIColor greenColor]] Since we set our nameLabel to have 126pt height, but the content view can only have 44pt height, it is not possible to simultaneously satisfy both of these constraints, thus causing the unsatisfiable constraints issue. The sample demonstrates placing three kinds of UIBar Button Items on the right side of the navigation bar: a button with a title, a button with an image, and a button with a UISegmented Control. Copied! . I know I have to add constraints for width and height to solve the warnings but the width and height of the stack view is depending on the number of . Set the ViewController's (the one holding the UIScrollView) size to Freeform in the size inspector in Interface Builder and all should work. No magic, pure code, full control and blazing fast. Short answer. Unlike UIKit, which is commonly used in conjunction with storyboards, SwiftUI is completely software-based. Set both scrollView and its content's constraint. Instead it uses the constraints set on the image view. For example, you could specify the distance between the Top, Bottom, Left, Right points between the views, but the subview you are holding back also needs height, since . Even if you increase the content, the scroll is automatically adjusted! I need use CGRect to change the size of the UIView? I found a way to implement this. This is fantastic! Now to reflect in the UI which view is ambiguous i use the exceptional xcode debugger. これは恐らく . I have used UIView() for giving the point of interest for showing information detail. 1) ScrollView Contraints . This is a task I have struggled with for a long time. Layout Issues list on the Issue Navigator. 1) Label should resize width wise unless it hits a max size and height is also dynamic that means when text reaches the maximum width then the word wrap will break the sentence to another line. I use [UIView -systemLayoutSizeFittingSize:] . The right side of the navigation bar options for customization include applying a custom UIView or using a UIBar Button Item. And the size of the View is not sizing. float maxHeight = 0; for (UIView *child in scrollView. Copied! UIView Autolayout is an very interesting concept in iOS App development. (Inherited from UIView) HeightAnchor: The NSLayoutDimension that defines the height of this UIView. (Inherited from UIView) Highlighted: (Inherited from UIView) HeightAnchor: The NSLayoutDimension that defines the height of this UIView. . For eg. These are UIView methods aimed at helping to detect and analyze constraint issues (referred to in Chapter 1).. | | | | | | | | | *UIView:0x7fa7da557e70- AMBIGUOUS LAYOUT for UIView:0x7fa7da557e70.minX{id: 2165}, UIView:0x7fa7da557e70.Width{id: 2166} Next, we will do the same for the UIView. If we manually add a fixed size, we can see that the footer is displayed: footerView.frame.size.height = 100 You can get height of the content inside UIScrollView by calculate which child "reaches furthers". (Inherited from UIView) Hidden: Specifies whether the UIView displays or not. Returns true if the Auto Layout for this UIView is ambiguous. Add Equal height and width of content view to this View. In size inspector, change 'bottom' and 'align center Y' priority to 250. . Interface builder says "Scroll view has ambiguous scrollable content height". といった警告をされることがある。. It says Ambiguous Layout, width is ambiguous and height is ambiguous. I did never did this programmatically, but can you not make a reference to the height anchor as a variable? (Inherited from UIView) Highlighted You can solve Auto Layout issues faster using UIView methods, Debug View Hierarchy and Interface Builder. The stack view is empty at creation then filled with X buttons when. But how to center with auto layout when CGRect(x: 0, y: 0, height: 200, width: 350)? 自动布局 02 Mar 2016 Comments 前言 最近遇到一个复杂视图：根控制器里面有上下两个子控制器，子控制器中各自实现类似PageView的视图，然后PageView的每一页是一个WebView，同时中间有个可拖拽的控件，实现上下两个控制器视图的大小调整。 An additional segmented . Returns true if the Auto Layout for this UIView is ambiguous. Dj Sison on February 5, . Ambiguous height and width errors and conflicting constraints galore. func viewDidLoad () is called. UIScrollView 3. . Extremely Fast views layouting without auto layout. Layout Issues list on the Issue Navigator. Autolayout takes care of responsive design. In general, the intrinsic content size simplifies the layout, reducing the number of constraints you need. The UIWebView needs a top constraint to the UIView's bottom, a leading, a trailing and a bottom constraint to the UIScrollview. My cell has, among other things, an image set to 48x48, so the size (0, 0) should not satisfy all the restrictions. this is used in lot of places) on top of UIScrollView. To scroll (spring effect), you need to set the alwaysbouncevertical property to true (the same is true for the horizontal direction) PinLayout can layouts UIView, NSView and CALayer. When you use autolayout, it doesn't use the height of the image view in Interface Builder. So label will have 3 constraints set to its container view and one set to button being on the bottom. a) Is there a way to resolve the ScrollView "content size is ambiguous" warning in interface builder to make all constraint lines turn BLUE? By default, when the elements in the Scrollview are less than a screen height, you cannot scroll. HighlightedAnimationImages Single view layout with ambiguous constraint. Symbolic Breakpoint を追加する必要があります。 Appleは、これを行う方法に関する 優れたガイド を提供しています。 ブレイクポイントナビゲーター cmd+7 （Xcode 9の cmd+8 ） 左下の[ Add]ボタンをクリックします Swift 4 Expression type'@value CGRect' is ambiguous without more context For example, there is now a class: class ImageListView: UIView { var moment: Moment! View 2 is anchored to the left and right of the scroll view, to the bottom of View 1, and also has an explicit height. Add UIView in ScrollView, pin it 0,0,0,0 to all 4 sides and center it horizontally and vertically. To resolve this issue, we can reduce the nameLabel's height constraint priority to 999 so that the auto layout engine can . let rect = CGRect(x: 10, y: 10, width: 100, height: 100) let myView = UIView(frame: rect) To add a subview to another view, call the addSubview (_:) method on the superview. The problem appears because you are trying to use the variable collectionView in your ViewController when this are not declare yet, to solve this you need to declare it as follows.. (Inherited from UIView) Highlighted: After that we will set constraints for UILabel and UIButton, idea is to have a 20px padding from each side. Set the ViewController's (the one holding the UIScrollView) size to Freeform in the size inspector in Interface Builder and all should work. footerView.frame.size.height = 100 Be aware of some traps that slow or break your app. (Inherited from UIView) Hidden: Specifies whether the UIView displays or not. It also needs a height constraint that we will later set to the height of the HTML content; The constraints should look like this: Connect the UIWebView's height constraint to an outlet in your view controller. With the help of . Make the size of the content view same as the UIScrollView. Add UIView in ScrollView, pin it 0,0,0,0 to all 4 sides and center it horizontally and vertically. InterfaceBuilderで、UIScrollViewにAutoLayoutを設定すると警告される時の対応. We're now able to jump straight into the conflicting view with a human-readable description of the error: "Height and vertical position are ambiguous". Veja grátis o arquivo iOSNotesForProfessionals enviado para a disciplina de Estrutura de Dados I Categoria: Outro - 49 - 92795884 Cheers. Get height of auto-layout cell with wrapped text in it I fixed this by setting the label's preferred width: // the label is inside the table view 8 points from each edge messageCell.message.preferredMaxLayoutWidth = tableView.frame.size.width - 16; The content size is determined after the view is loaded and set. UIView 2 . Concise syntax, intuitive, readable & chainable. I use [UIView -systemLayoutSizeFittingSize:] . So label will have 3 constraints set to its container view and one set to button being on the bottom. (Inherited from UIView) Hidden: Specifies whether the UIView displays or not. The layout for the image view height property is ambiguous. Constraint Debugging. Thanks. Now is time to dive into LLDB. (Inherited from UIView) InputAccessoryView I did this minimal example in a freshly new project which you can download and I attached a screenshot. 我在调试器日志中看到一个错误： Will attempt to recover by breaking constraint <NSLayoutConstraint:0x191f0920 H:[MPKnockoutButton:0x17a876b0]-(34 . (Inherited from UIView) HeightAnchor: The NSLayoutDimension that defines the height of this UIView. Step 2 : Don't add directly views which you need on directly scrollview, First add one view to scrollview (that will be our content view for all UI elements). SwiftUI is a completely new framework that allow s you to design and develop user interfaces declaratively and with less code. The built-in method constraintsAffectingLayout(for:) is helpful, but it doesn't tell you what view the constraints belong to, and it returns the constraints for just one axis (.horizontal or .vertical), so if you want to know all the constraints, you have to . 2) ScrollView -> contentView Constraints to scroll View same as above image. Returns true if the Auto Layout for this UIView is ambiguous. The x & y stay to hard to keep center x & center y at any screen size? (Inherited from UIView) Hidden: Specifies whether the UIView displays or not. Content1 (UIView) - with Red background color; Content2 (UIView) - with Green background color; Content3 (UIView) - with Blue background color; This is what it should look like in the storyboard: Some notes and tips first before defining the constraints for our storyboard: Do not think of the scroll view as having a fixed width and height. InterfaceBuilderにて、UIScrollViewの上に適当なviewを配置して、いつも通りのノリでAutoLayoutを設定すると. Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger，代码先锋网，一个为软件开发程序员提供代码 . (Inherited from UIView) HeightAnchor: The NSLayoutDimension that defines the height of this UIView. 关于Autolayout和Masonry自动布局的几个坑. Swift 5.x: @IBOutlet weak var collectionView: UICollectionView?. (Inherited from UIView) HeightAnchor: The NSLayoutDimension that defines the height of this UIView. There is another way to check the height of a cell with . How to set content size of UIScrollView dynamically, Step 1 : Add Scrollview to view in storyboard and add leading, trailing, top and bottom constraints (All values are zero). | | | | | | | | | *UIView:0x7fa7da557e70- AMBIGUOUS LAYOUT for UIView:0x7fa7da557e70.minX{id: 2165}, UIView:0x7fa7da557e70.Width{id: 2166} The solution is. 2. I've read tons of answers online, which usually require you to calculate and set a fixed height, either in Interface Builder or even worse, in code. (Inherited from UIView) Highlighted: Whether the UIImageView is highlighted. It sounds so simple- but UGH, headache after headache. height: UIView footer size calculated dynamically. In size inspector, change 'bottom' and 'align center Y' priority to 250. You may add any number of subviews to a view, and sibling views may overlap each other without any issues in iOS. Now is time to dive into LLDB. You may add any number of subviews to a view, and sibling views may overlap each other without any issues in iOS. iOS 9.0+ / tvOS 9.0+ / macOS 10.9+ The Builder interface does not give me any warnings about ambiguous restrictions [cell hasAmbiguousLayout] returns NO. "Has ambiguous scrollable content width" and "Has ambiguous scrollable content height" Continue with the same constraints above, . 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