. Let’s see geometry reader in action by having a couple of colors in a VStack: GeometryReader { reader in // 1. 85, idealHeight: geometry. Nov 17, 2022 · You can use a GeometryReader and PreferenceKey to read the size and then write it to a state variable. yellow) Text("More text Jan 5, 2023 · Here, the height of the orange color is set to the 1/3rd of the screen height. GeometryReader breaks the concept of SwiftUI’s declarative programming, requiring direct operation of the view framework, which is closer to imperative programming. Overview. height to obtain screen dimensions without GeometryReader. One potential disadvantage of the solution is that GeometryReader can mess up your layout if you haven't plan for it, as it will expand to take all available space. padding(10) modifier before . Let's say, I have an image with source dimensions 5000x5000, and a bunch of previews of the same image at lower resolutions 50x50, 100x100, 200x200 and so on. g. height). The width of each rectangle is proportional to its position in the stack — the first rectangle takes up 10% of the width, the second 20% and so on up to 100%. The yellow circle also ends up in the top-left Aug 18, 2020 · There are a lot of examples of bottom sheet out there for SwiftUI, however they all specify some type of maximum height the sheet can grow to using a GeometryReader. GeometryReader is added to the background of the content being presented and not to the foreground because GeometryReader tends to expand to all the space given to it like color or shape. 39. frame (width: proxy. If you do not restrict the size of the ZStack, the ZStack will grow with the GeometryReader. Dynamic GeometryReader Height Hey, I'm using GeometryReader in a few projects but I can't work out how to change it's frame dynamically when reading an item in a ForEach. bounds), but I can't find a way to Feb 21, 2024 · BUILD THE ULTIMATE PORTFOLIO APP Most Swift tutorials help you solve one specific problem, but in my Ultimate Portfolio App series I show you how to get all the best practices into a single app: architecture, testing, performance, accessibility, localization, project organization, and so much more, all while building a SwiftUI app that works on iOS, macOS and watchOS. You can then read the size it was offered in swift and resize the image and text frames / sizes as required in swiftui accordingly. GeometryReader takes up all available space. Ask Question Asked 1 year, 9 months ago. Feb 21, 2024 · However, as the view moves those values will change, and SwiftUI will automatically make sure GeometryReader stays updated. Understanding the To get the height of the "Hello world!" text, I attached a . Aug 30, 2019 · This is the certain way to know the HARDWARE screen size, as specified in the question. top] }) } . height properties like this: geometry. Nov 7, 2023 · First, we use GeometryReader to get the proposed width provided by ScrollView and calculate the required height based on this width. 0+ Mac Catalyst 13. Feb 2, 2020 · Just for completeness, the GeometryReader will return size of the container. I tried a lot of different approaches, from GeometryReader to . Follow edited Apr 24, 2021 at 12:30. 25/. Dec 30, 2021 · I would like to have a wrapped list of tags for each row in a SwiftUI list which I imagine to be the equivalent of a CSS float: left (e. May 28, 2020 · I want to determine the height of the content inside my (vertical) ScrollView. Thus your . GeometryReader 在SwiftUI 中的使用,使用 GeometryReader 搭建 parent view 和 child view 之间的桥梁 150, height: 150) . Two image views have 10 points space. 8) } Typically I use the GeometryReader as a "Root" view and scale everything off of it, however you can place it inside of another view or even as an overlay to get the parent view size. But if you really want to do it this way, you could apply padding to the ScrollView based on the excess height. frame(in: . Note that when the height is too large, the image will exceed this frame, so it also needs to be clipped(). layoutPriority(), but I haven't managed to get any of them to work. On my device the GeometryReader passes in a width of 320, so if you put 20 items (for example) in the array, then the height of the content in the GridView is 320/nCols * nRows = 320/2*10 = 1600. Nov 23, 2023 · Then, maxHeight: geometry. frame(height: 50) above is because, without it, that GeometryReader would fill the entire height of the body, and would return that entire height if geometry. I'm pretty lost here as to how to properly do this. top) { Color. GeometryReader is particularly useful when creating responsive layouts that adapt to different screen sizes and orientations. all) Text("This is some very long text can we can see scrolls past two lines ") . size(CGSize(width: geometry. Jun 18, 2020 · I am trying to create a view in SwiftUI where the background of the image on the left should scale vertically based on the height of the text on the right. While the code is not a one-size-fits-all, the controls and techniques involved can apply to all platforms. Sep 4, 2021 · Here is a way for this issue: struct ContentView: View { @State private var commitDescr: String = "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. height * (1/5)) // 2. Current state: Desired state: Then to retrieve the width and height of the GeometryReader, you can retrieve the size. background (. Jan 30, 2023 · That’s where our good old friend GeometryReader comes in (wouldn’t be a proper SwiftUI layout workaround without it, right?). scaledToFit() . While GeometryReader is mostly used to access the size of the view that it’s hosted in (or, more accurately, that view’s proposed size ), it also has another neat trick up its sleeve — in that it can be asked Oct 31, 2022 · iOS SwiftUI - GeometryReader on size / height change. height / 2)) } You can also use the frame(in:) method to get the frame of the view in a specific coordinate space, for example you can use it to get the position of the view in the global coordinate space: Feb 20, 2021 · The showing size is the dimension of the full view that is the container of the inner view. sizeThatFits is: Fit the container (A) to the size of the preview (B) when offered the size of the device (C) on which the preview is running. My issue is that the state variable doesn't seem to be changing despite me setting it. 6 ) Nov 28, 2022 · I have a scrollview with a few subviews, and I wanted each of these subviews to have a certain frame height relative to UI screen height. So if you use it around your text view, it would take more or less the whole screen and put your text view in the center of it, and then return the proxy data for the enlarged frame – try it and see what happens. Thanks! Jun 14, 2020 · The problem here is the . Ideally I would like to have a GeometryReader in the MessageView but that messes up the vertical spacing. global). height). Jan 16, 2023 · Introduced in June 2019 as a core component of the SwiftUI framework, GeometryReader provides a new way to size and position views based on the parent’s geometry. Instead of creating a VStack, you may want to place all the figures, separated by newlines, in a single text, and fit the text to the bounding rectangle. So your example would be something like: FormView() . And more importantly, if you need to get the hardware screen height then GeometryReader will fail you -- it subtracts out the status bar at the top of the screen! And, thankfully, let hardwareScreenSize = UIScreen. However when I wrap ForEach in List, elements are no longer displayed. I know you can do this with GeometryReader, but the moment I put GeometryReader inside ScrollView, it fails to read screen height. This Card is going to have 3 Shapes on it. Here's what I want to achieve Without scrollview, this works nicely. To get the benefits of a height-constrained GeometryReader and a correctly sized content view, you can place the GeometryReader in a ZStack and bubble up its measurement. global) } } } GeometryReader { metrics in ZStack{ self. Jul 13, 2020 · If I understood correctly, you want the size of the image so you can use it's dimensions in it's own frame? You could make a function that takes in an image name and returns your desired image while also setting @State vars for the width and height which you can use in the frame. size of the parent // You also have function to get the bounds // of the parent: geometry. GeometryReader is trying to give as much as possible to its descendant. import SwiftUI struct ContentView: View { var body: some View Feb 5, 2022 · I am trying to create a View using GeometryReader and then use it in ContentView, however no matter what changes I make , I just cannot make the View created with GeometryReader align to centre, c Oct 18, 2019 · Following is to set child view height to parent view when using GeometryReader. Mar 9, 2023 · Form more control on swiftUI side if you use a swiftUI view that fills its bounds (ie. height) } } I think this issue pops up because GeometryReader's internal layout acts like a ZStack and it needs more information. Aug 20, 2019 · The only available mechanism to get the dimension of a view, that is auto-resized by SwiftUI, is the GeometryReader. @MainActor @frozen @preconcurrency struct GeometryReader<Content> where Content : View. 1. Below shows how I get the height of each view as it's being added. This course was written for designers and developers who are passionate about design and about building real apps for iOS, iPadOS, macOS, tvOS and watchOS. Modified 1 year, 9 months ago. frame(height: finalHeight) } Finally (this is where the "magic" happens), in your drawCircles function, update the finalHeight variable as you load circles into your view. I would like my LoadingTitle to have a width of 70% of the screen so I use the GeometryReader but it makes the vertical size expand and my LoadingTitle takes much more vertical space. Nov 24, 2023 · It seems that you were using a GeometryReader to define the position of the views based on a fraction of the total display height. SwiftUI的一个神奇之处在于,我们在做某些功能的时候,无需过多地关心布局信息,而是把主要精力放在业务逻辑部分,后续的文章中,我会专门写一篇Data Flow的文章。 那么SwiftUI布局的核心原理是什么呢? 主要分3个步骤: 父view提供一个建议 Aug 31, 2023 · import SwiftUI struct ContentView: View { @State private var containerHeight: Double = 0. If we combine GeometryReader with any view that can change position – such as something that has a drag gestures or is inside a List – we can create 3D effects that look great on the screen. However, I think the behavior is as expected. 15+ tvOS 13. Feb 21, 2024 · That code uses GeometryReader to read each view's position in the scroll view, but we've needed to add an explicit width and height to make stop our GeometryReader from automatically expanding to take up all available space. width, height: proxy. import SwiftUI struct ContentView: View { @State private var totalHeight = CGFloat(100) // no matter - just for static Preview !! Feb 24, 2020 · var body: some View { GeometryReader { geometry in VStack { ImageContent() } . To solve this you need to put some constraints in the draw of the GeometryReader. width and size. A container view that defines its content as a function of its own size and coordinate space. frame(height: self. Jun 24, 2019 · GeometryReader is a view that gives you access to the size and position of its parent. Marco Falanga Jun 16, 2022 • 2 min read Nov 9, 2023 · Over-reliance on GeometryReader can make the view layout rigid, losing the flexibility advantage of SwiftUI. Sep 26, 2020 · I'm trying to use GeometryReader to make a Card View (to use in a card game). This article will discuss many of its common applications. Question For SwiftUI discussion, questions and showcasing SwiftUI is a UI Apr 6, 2022 · I have a GeometryReader that properly spaces two input fields in . When I have ForEach inside it it works fine - my elements have proper height and are displayed correctly. Dec 30, 2021 · How to set GeometryReader height according to its children height in SwiftUI? 10 GeometryReader unwanted full height/width behaviour. clipped() } } But I have a function where I want to use the frame height and width calculated by the GeometryReader in order to crop the image. Which is not much to go on, I know, but I'm pretty stuck. width and UIScreen. 0+. For the purpose of this question, I created the following project : GeometryReaderTesting. (Zoom in to the pic to see the code and preview side by side). ). Nov 29, 2019 · If you just want to use the full screen width and height, and you don't bother about the aspect ratio of the image, you can either use a geometry reader of the UIScreen size's. For example. GeometryReader {proxy in VStack {}. 0+ macOS 10. How it looks: Mar 18, 2023 · Why if I add . Previously we used DragGesture to store a width and height as an @State property, because it allowed us to adjust other Nov 10, 2021 · Ok, there are several instruments in SwiftUI providing access to view size (except GeometryReader of course). Nov 28, 2023 · iOS SwiftUI - GeometryReader on size / height change. Note: The below code works great, however the geometry reading is causing me issues upstream, so I would like to have the same logic to build the view's width based on available space but without using May 30, 2020 · Ok, here is a bit more generic & improved variant (for the solution initially introduced in SwiftUI HStack with Wrap). Sep 5, 2019 · I used the GeometryReader to modify a Rectangle() and it is placed as I expected. Jul 14, 2020 · on UIKit minimumScaleFactor and minimumFontSize are ineffective unless you set adjustsFontSizeToFitWidth. midY May 20, 2020 · So far, so good, however, the flipping of the scrollview produces at lot of UI glitches when the content fits on the screen without the flip. size changes. Mar 27, 2021 · At an early stage of SwiftUI, it was easy to frame a view relative to its parent. This article will explore various techniques for measuring the height of a view in SwiftUI, providing detailed context and covering key concepts. Under the channels, there are multiple channels inside a scroll view. showDetails ? UIScreen. blue. width geometry. struct ContentView: View { var body: some Dec 1, 2022 · Updated for Xcode 16. Dec 2, 2019 · However, it messes up the rest of my view as the GeometryReader requests the full height/width of the View (as shown in the image with the green BG). Unfortunately, using simply the GeometryReader isn't working, since it returns a value of 10 no matter what content is inside the ScrollView. The first field should take up 25% of the width and the second field 75%. That might not be an issue in certain situations, but it’s still Apr 12, 2021 · GeometryReader { geometry in RoundedRect(cornerRadius: 5). We can use UIScreen. I'm trying to center these 3 Shapes using GeometryReader (starting with the May 12, 2022 · Updated for Xcode 16. width * 0. Jun 30, 2019 · Might be a ScrollView bug. Jul 13, 2020 · This can be achieved by using GeometryReader. I think that your solution gives me the distance to the edge, plus the unsafe area, or something like that. minY is always 48 with safe area (or 0 with ignored SafeArea). frame(width: geo. SwiftUI - How to get GeometryReader Jun 14, 2019 · Is there a way to measure the computed size of a view after SwiftUI runs its view rendering phase? For example, given the following view: struct Foo : View { var body: some View { Text(" Feb 6, 2022 · Once on screen, GeometryReader calculate its position and size information and passes that information to its child views via GeometryProxy, which can be used by child views to know information Aug 18, 2020 · As you can see in the screenshot, the button height does not adjust to fit the text size, making it look ugly. What I would like is to create a Mar 23, 2022 · I have two Text Fields side-by-side. This is probably not a very reliable way to get a consistent layout across different sizes of display. As if it inserts unwanted Spacer() . center) { GeometryReader { geo in Text("Hello, World!") . SwiftUI GeometryReader does not layout custom subviews in center. bounds. In this way, we can get the desired display result. " Jul 19, 2019 · I want to manually set the frame height of a view in SwiftUI to the size of the safe area of the screen. However, it can sometimes report the wrong size, especially when the width is bigger than the height. It should be said the reason I use GeometryReader, is to get each Text view to change based on their location on screen. lineLimit(nil Jul 1, 2021 · I am new to SwiftUI and I want to recreate the Contact-Card View from the Contacts App. Then, we adjust the required size height that GeometryReader submits to ScrollView through frame. 4. iOS 13. GeometryReader expands both horizontally and vertically, as Spacer does in VStack and HStack. That's gone, and we're left with GeometryReader. I have tried using GeometryReader, but ran into issues there. The GeometryReader is a proxy view that returns the dimensions of the container in which your view gets rendered. 75 proportion. height - 10) * 0. 0+ visionOS 1. resizable() . The simplest possible grid is made up of three things: your raw data, an array of GridItem describing the layout you want, and either a LazyVGrid or a LazyHGrid that brings together your data and your layout. May 10, 2022 · The reason for the . In this example, you use GeometryReader to create a VStack of 10 rectangles. VStack {. Jul 22, 2021 · You should not use GeometryReader in this case, just use height to How can I remove the minimum vertical padding or minimum height of a List row in SwiftUI? 37. 1,834 16 16 silver badges 34 34 bronze badges. onAppear() won't run at all until the geometry is good, or at least nonzero(*). For example, if you wanted two views to take up half the available width on the screen, this wouldn’t be possible using hard-coded values because we don’t know Jun 13, 2019 · In this approach you surround child view with GeometryReader and use anchor preference to get CGRect that contains position and size of the view in GeometryReader coordinates. iOS Swift Aug 2, 2020 · I had a similar problem and this post inspired me in finding a solution. offset(x: geometry. Jun 26, 2019 · The GeometryReader in SwiftUI helps you to deal with complex UI. For iOS programming related content, visit r/iOSProgramming Feb 4, 2020 · I don't understand what you're saying about the "equation" not having a solution. The workaround is to get the actual rendered size via . blue Sep 14, 2022 · 概要 サイズの取得方法 座標の取得方法 global local min、mid、max 使用事例 最後に 概要 GeometryReaderはSwiftUIで使用できるContainer Viewで、Viewのサイズや座標を取得することができます。 Viewのサイズや座標を取得できるようになると以下のような動的にサイズを変更したりすることが容易にできるよう Nov 29, 2023 · The result seems to be correct, yet not entirely accurate. asked Feb 1, 2020 · I have a page with a player that has a height of 1/3 of the screen height. The idea is to avoid giving 'hardcoded' height. You can use a GeometryReader like this: GeometryReader { geometry in SomeView() . The problem of course is to transfer that size value into view build phase, because only GeometryReader allows to do it in same build cycle. For SwiftUI discussion, questions and showcasing SwiftUI is a UI development framework by Apple that lets you declare interfaces in an intuitive manner. However, Aug 15, 2020 · Actual Rendered Size. Tested with Xcode 11. As a subview, its size is unclear. The actual distance (in padding, at least) is 60 pixels. ” 2. clear. SwiftUI measuring the height of a view. height - 10, alignment: . When scrolling up for example, the picture size just jumps abruptly to the minimumPictureSize I have May 19, 2021 · Can someone explain why: GeometryReader positions its contents to the left top corner, not in the center. As the OP explicitly referred to screen dimensions it may be worth to mention UIScreen class. Jun 4, 2022 · The job of geometry proxy is to provide you with the frame in a certain coordinate space (talked in detail in upcoming sections). 0+ iPadOS 13. You need to use another GeometryReader to get the inner dimension of a second ZStack. frame(width: geometry. GeometryReader is mainly needed for reading dimensions. I will display different size images in the image view (scale aspect fill). height, self. midX and geo. frame(width: width, height: width) view doesn't show up on the screen? I can't understand this rendering flow. ScrollView { //My Content } Is this possible? I've tried a few things but nothing seems to work. I'm honestly not sure why your code doesn't work, but you can get the desired result using: struct ContentView : View { var body: some View { GeometryReader { reader in ScrollView(alwaysBounceVertical: true) { ZStack(alignment: . takes all the space it was offered by the parent view) like GeometryReader. Mar 15, 2024 · How to set GeometryReader height according to its children height in SwiftUI? 3 Jul 26, 2023 · I had created a list with 5000 cells and a text label showing its position on top. Positioning Child Views Oct 10, 2020 · It should be understood that GeometryReader is not a magic tool, it just reads available space in current context parent, butScrollView does not have own available space, it is zero, because it determines needed space from internal content so using GeometryReader here you have got cycle - child asks parent for size, but parent expects size from child Oct 20, 2020 · I am trying to read the width of my Text depending on size of Text Font, As we know GeometryReader takes all possible given place to him, in this codes it just take himself the given frame size, th Mar 13, 2023 · As @loremipsum mentioned in the comments, if you want this UI to scale for any screen size, then your lineWidth needs to be a percentage. May 1, 2020 · GeometryReader 是個看不到的容器,它的參數 geometry 可告訴我們它的位置大小。 利用 GeometryReader 取得 SwiftUI 元件的座標尺寸 50, height: 50, alignment Nov 13, 2022 · Use GeometryReader in the background of the content being presented to measure the height of content. I have created the following layout in SwiftUI. Mar 13, 2022 · GeometryReader an API part of SwiftUI that allows us to obtain device width and height. Instead, if you want to maintain some proportions and define frames, then consider creating view frames using UIScreen. Jul 2, 2019 · I tried with the previewLayout and I see what you mean. I am trying to set the height of the scroll view sec Jul 28, 2019 · I started exploring SwiftUI and I can't find a way to get a simple thing: I'd like a View to have proportional height (basically a percentage of its parent's height). Just find that the view looks laggy and the CPU is in full usage while I scroll the list. width / 2) } } GeometryReaderalways uses all available space. Instead of returning your View inside the GeometryReader, draw it then add the GeometryReader as a transparent overlay or background. Jan 25, 2023 · GeometryReader { geometry in Rectangle() . width, height: UIScreen. Create a new SwiftUI iOS App project and give it any name you wish such as “BasicGeometryReader. I'll start with GeometryReader as the parent: It position its subview in the top left and that's fine. frame(width: (metrics. Of course, for a user to receive a badge, you’ll need to create one. I also have a view modifier that adds 24px of horizontal padding. edgesIgnoringSafeArea(. You can see that the screen height is fetched from UIScreen. How can I increase the hight of the buttons, so it does not look stupid. struct WelcomeView: View { var body: some View { GeometryReader { geo in Apr 15, 2024 · SwiftUI is a powerful declarative UI framework developed by Apple. Please keep content related to SwiftUI only. Improve this question. width / 2, height: geometry. frame(height: containerHeight) } } This works. I thought that it could be possible by using GeometryReader, but the size is not correct :(( @ Jan 29, 2020 · This works, however the value it gives me is 83 for an iPhone 11 Max Pro. Jan 10, 2021 · I need to use GeometryReader to size views based on screen width. red) } . SwiftUI's GeometryReader lets you scale enclosed views in relation to available space. height = max(d. 8, height: geometry. alignment: . example) . To see how a GeometryReader works, follow these steps: 1. Simon. 85, minHeight: geometry. This tutorial takes you through the process of creating a badge by combining paths and shapes, which you then overlay with another shape that represents the location. Let's say I have 3 views verti Aug 20, 2021 · Then, change your GeometryReader's frame height value to the previously defined variable's value: ScrollView { GeometryReader { proxy in // Your drawing code } . frame( maxWidth: geometry. One of the challenges when working with SwiftUI is measuring the height of a view, as it is not directly exposed. height. With a ScrollView the actual height is 0. 5. These variables are mutated within a DragGesture's onChanged Apr 30, 2021 · And it's pretty common in SwiftUI to see views being multiply rendered for many reasons. So maybe this will be useful to someone else. What the GeometryReader does is find the frame of the available space, and it fills it. When the toggle state changes, the red rectangle scales as expected with an animation. So those GeometryReader's that should have a smaller height than the first, are getting the same amount. Apr 21, 2021 · swiftui; height; geometryreader; Share. In my example, I store the entire size, but you could adjust it to store just the height, since it's likely that that is the only parameter you need. height) This line of code will set the Image to the max size of the device. 4 / iOS 13. frame(width: proxy. I hope the following link will be helpful. height gives it a frame with maximum available height. Dec 2, 2020 · Thanks for responding! In terms of the GeometryReader - when I move it outside of the ScrollView then geometry. Aug 6, 2021 · This is useful to constrain NavigationView height when in use inside a bottom sheet Feb 21, 2024 · For example, we could make an image that’s 80% the width of the screen, with a fixed height of 300: GeometryReader { proxy in Image(. Jun 10, 2024 · In my code I need "height" var to be refreshed depending of the size of the view (carousel). I'm trying to download the version of a image that best matches my view dimensions. Dec 8, 2019 · Viewサイズをどうやって知る? UIKitではView自身の座標位置やサイズはUIViewのプロパティとしてframeプロパティやboundsプロパティが定義されそれで取得ができました。 SwiftUIのViewには座標位置やサイズを表すプロパティはありません。 ではそれらの情報を取りたいときにはどうすればいいの self. For example: struct MyView: View { var body: some View { GeometryReader { geometry in // Here goes your view content, // and you can use the geometry variable // which contains geometry. size. I am struggling to resize the Image on the top smoothly when scrolling in the List below. Two issues The second May 28, 2020 · I'm trying to use GeometryReader to assign a maxHeight to a list in a Scrollview. main. The issue is that the height of the geometry reader forms a perfect square where the height matches the width. frame(height: reader. height * 0. I need to calculate the height and use that instead of the fixed 80. image . Oct 4, 2022 · The height of a row in a LazyHGrid is driven by the height of the tallest cell. For now, I'm just printing the height using let _ = print(proxy. Sep 10, 2019 · That is the intended behavior. What I'm trying to do, is get the content height of the scroll view, and only execute the flip if the content height > screen height. minY is always 0 and geometry. For Swift programming related content, visit r/Swift. local). Thanks! Here’s a “drop in replacement” for GeometryReader, whenever this is bugging you… @available(iOS, deprecated: 14, message: "This patch should no longer be needed when when dropping iOS 13 support") struct GeometryReaderPatched: View where Content: View { public var content: (GeometryProxy) -> Content @inlinable public init(@ViewBuilder content: @escaping (GeometryProxy See full list on swiftwithmajid. Color. 8, height: 300) } You can even remove the height from the image, like this: As Patric Fu states it is normally an initialization issue that generates the warning message "Invalid frame dimension (negative or non-finite). If/when internal subviews separated the geometry width can be injected by constructor arguments. background(Color. height was Jan 7, 2020 · Each image view has the same width and height (aspect ratio = 1). height) } return d[. Mar 27, 2022 · Consequently going back to the first step (drawing the GeometryReader and updating the state). What I found out is that List has 0 height (I need to add frame with height to see it - and I would prefer to have height calculated dynamically). The size information inside the new geometry proxy can then be stored in a temporary @State variable defined in the View. Is there any other way to get the frame of the views in the LazyVStack? Below is a simple representation of what I want to do. struct ContentView: View { var body: some View { VStack(alignment: . frame(width: r. The same way a HStack or VStack grow with a Spacer Apr 20, 2020 · Due to "hen-egg" problem in nature of GeometryReader the solution for topic question is possible only in run-time, because 1) initial height is unknown 2) it needs to calculate internal size based on all available external size 3) it needs to tight external size to calculated internal size. width), Height: \(proxy. Combined with the previous method, this means: you measure the proposed width; you avoid taking up all of the proposed height; the height proposed to the content view is untouched Jun 14, 2020 · GeometryReader. Code here: import SwiftUI s Jun 16, 2022 · This article shows how to use the new ViewThatFits released at WWDC 2022 to replace GeometryReader when building views in SwiftUI. background() of GeometryReader to it. Is there a way to get the height to conform to the content within? Sep 22, 2020 · Even so, If you want to fit the area of GeometryReader to the Text view (exactly your custom view), you will have to calculate a height of the custom view by using preference or anchorPreference and then set it as a height of GeometryReader in order to let the parent know what size it needs to assign. So, this: ScrollView { GeometryReader {r in Text("SomeText"). Here is scratchy (w/o subviews separation) possible solution for layout. But once the view is added, it’s too late to find out if it exceeded the total height available. background modifier with an nested GeometryReader. Dec 21, 2023 · I'm afraid that I couldn't fully understand your idea, however, trying to set the frame size through GeometryReader is a bit strange. Apr 16, 2022 · The resizable view's dimensions are set via two @State variables controlling the width and height. SwiftUI’s LazyVGrid and LazyHGrid give us grid layouts with a fair amount of flexibility. yellow) } } Note: real result is visible only in LivePreview, because height is calculated dynamically and assign in next rendering cycle to avoid conflicts on @State. size works just fine in SwiftUI. frame(width: UIScreen. height : 80, alignment: . Jun 16, 2023 · Although it’s usually best to let SwiftUI perform automatic layout using stacks, it’s also possible to give our views sizes relative to their containers using GeometryReader. It has a simple solution. My question is, how do I increase the height of buttons in SwiftUI? I am trying to make the titlescreen of my Minecraft-like game. Useful for determine a views constraints based on screen width and height. Unless the first rendering will know that there are different heights, use the larger value as the height. Just assign to the onChange modifier the same you did to onAppear and set it to fire when geo. Viewed 2k times Part of Mobile Jun 19, 2020 · I've tried to use GeometryReader and setting the scroll view's frame to the window width and height, SwiftUI set max height on ScrollView. width, height: geometry. GeometryReader height gives screen height rather than height below menu bar . bounds; Basic Implementation GeometryReader works by wrapping our view inside the view builder closer, it acts as a container. SwiftUI’s GeometryReader allows us to determine the size and coordinates of views as a function of its own size and coordinates. ( I assume because of the dynamic sizing. 0 Aug 24, 2022 · Using GeometryReader to get the views current position i then determine if it is on the screen or not and if so, depending on its position from left to right, increase the height accordingly. Here is an example implementation: Jan 29, 2021 · However, note that while the width of our two buttons is now completely dynamic (and fully synced), we have to hard-code the maximum height of each of our grid’s rows, since otherwise our grid would end up taking up all of the available space (just like a GeometryReader). 561403509 , height: metrics. Users receive a badge whenever they visit a landmark in their list. 7, height: 40) . But you can wait to render the view inside GeometryReader until the geometry is nonzero. 0+ watchOS 6. com Nov 11, 2020 · With regards to that, though, you can swap the position of the GeometryReader and the ScrollView. When you run this code, you'll see the width and height of the parent view displayed on the screen. using this or this in each row of a swiftUI view). task { containerHeight = calculateCustomHeight(using: proxy) } } . I try comment the code of Nov 29, 2019 · I also experienced this issue but managed to fix it by specifying idealHeight instead maxHeight and also adding a minHeight. You can center the element Uesing geo. height)") } In this example, we're using GeometryReader to read the size of its parent view and display the width and height using a Text view. width / 2) } GeometryProxy Jul 26, 2020 · By default: GeometryReader places its children in the top left corner. It's easy to get the bounds of the screen (UIScreen. According to the example you provided, the data source will only show a smaller height if it has only a small size at the beginning. When working with SwiftUI, the GeometryReader view is a powerful tool that provides the size and position of its parent view. For example: Oct 28, 2020 · My problem is, if I use GeometryReader to get the height of a view, first I have to add it. Mar 18, 2023 · GeometryReader { proxy in Text ("Width: \(proxy. SwiftUI之GeometryReader. bottom so that the image stays at the bottom of the frame when the height is less than the available height. size. Depending on how much text a Card-Object has for its title or subtitle, the CardView has to be smaller or larger than 80. For example, I use the GeometryReader to change the scale of a view based on its position but would like the Geometry reader to fit to the size of the view. This will have the same effect but Mar 27, 2022 · Unfortunately, it gets only the first GeometryReader's height and uses it on all of them. But there should be some parent view connection, so let's put the May 26, 2024 · Incorrect Size with SwiftUI Geometry Reader: Width vs Height. If I use GeometryReader, I can set the image view frame dynamically, but how to set the GeometryReader frame dynamically? Feb 28, 2020 · The code below is to create a custom button import SwiftUI let skyBlue = Color(red: 75/255, green: 170/255, blue: 193/255) struct RegisterButtonView: View { var body: some View { Apr 24, 2021 · Putting a GeometryReader in my LazyVStack breaks the layout. Feb 22, 2024 · I'm working on an iOS app that supports both iPhone and iPads. This is what I had before refactoring. The definition of . . top) . Note: as height of view is calculated dynamically the result works in run-time, not in Preview Build an app with SwiftUI Part 3. SwiftUI views place content in the center of its coordinate space. The idea is to set minHeight of your root view:. SwiftUI works across all of those platforms. blue)} Geometry Reader Preference Key The GeometryReader view can be used to store the current size of a view in a PreferenceKey , which can be accessed from other views in the application. Feb 23, 2024 · GeometryReader in SwiftUI by definition is a container view that provides access to the size and coordinate space of its view. center) line. 0 var body: some View { GeometryReader { proxy in Text("Test") . fjxf svfrs jpye bgsu wjbe yusmtm pwsrl wgk oxujkij wqb