Xcode debug view hierarchy purple exclamation mark Now, I want to debug the UserListView and UserList pages, specifically to understand when the view gets changed or created and which properties impact the SwiftUI view. The most common cause are of course my lack of experience with both Swift and Apple's . onDisappear with debug prints inside are the tool that helped me finding out where views were being re-created instead of being kept. Any idea to do with it? The debug view hierarchy is a great way to view they different layers that make up the UI, but as far as I can't tell there is no way to see what outlet reference names the objects have. svn folders from the entire project, or just the one in the folder that contained the problematic files? In any case, the easiest way to fix things at this point might be to 1) back up your current working folder, 2) check out the latest repository version to a new location, 3) copy over the files (not the folders) that you have modified into the new checkout With the project open in Xcode, from the menu: Debug / Attach to Process, choosing my Xojo app. 1 out of 20 times it's showing blank screen saying Unable to capture view hierarchy, but other times no response. Follow answered Aug You have to be running a Debug build and hit a breakpoint to debug your app and show the buttons in the debug bar (the circled part in your screenshot), including the Debug View Hierarchy button. 0. They will not be submitted to the appstore as they are only part of debug-build Here’s a look at my updated app running in Xcode’s Debug View Hierarchy tool. Click to In the Xcode 9 view debugger, I'd like to select a view in the 3-D exploded diagram of views, and then reveal that view in the hierarchy on the left. Alternatively, go to Debug\View Debugging\Capture View Hierarchy . yout After clicking "Debug View Hierarchy" button, you are on the blank white screen. See the image below for what the "Debug View Hierarchy" says. Improve this answer. Capturing memory graph button is working but it's taking forever to load. The button to trigger that function looks like this: In my current kvm, after I trigger this function, it shows me nothing but a blank background. Set a Debug Breakpoint: Begin by setting a debug breakpoint at the desired location in your test where you want to inspect the view hierarchy. 4? 1 XCode 7 debugger not working. To solved it, just be sure you are using the iOS systom not below iOS 9. The cause for me was that I had set the alpha of the view to 0 in viewDidLoad, but did not set the alpha back to 1. Thanks! android-studio; Everything (maybe not everything) works pretty well, except for one function offered in Xcode – Debug View Hierarchy. The app Since you do not have an Enterprise license and thus Xamarin Inspector which is integrated in the Visual Studio debug workflow, you can use Xcode but of course you have to manually apply Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Related Xcode Apple Inc. 3? Ask Question Asked 7 years, 8 months ago. Improve this question. It's weird that I can't capture 'some' of my projects view hierarchy content in Xcode. Without answers to the two questions I asked in the first comment, no one can know if there's an issue with Xcode or if your app is just running without hitting a breakpoint. How can I set the UILabel in front of the UIView? I remember encountering the same problem in XCode 6 and was able to bring the UILabel to front but can't now find any advice on how to do this on XCode 7. In Xcode, Apple provides many features that can help improve developer productivity and make debugging easier. I want to be able to run a custom script for Xcode on a Debug View Hierarchy to inspect runtime AutoLayout errors. building a hierarchy of not only the views, but also the active view controller hierarchy (which can be helpful to see as well), too. Then And see what comes back in the output view hierarchy to reference, or just a simple call to po app will print the hierarchy. buttons["Icon Menu Light"]. shim. Yes. It shows all the views you defined but also the views (and view controllers) iOS created for you. Asking for help, clarification, or responding to other answers. . My observation and workaround. main. On the right - what's visible in the Xcode view hierarchy debugger Adding a // MARK: comment to your code. ly/2H7G9NcFind us on Fa First, you have to click the debug view hierarchy icon on the debug area as shown on this picture: After pressing the button a snapshot of the Views hierarchy will be shown on the Xcode screen as follows: You can see all the elements (UIViews) that are actually being displayed (or not, they can be in the background) on the screen of the device Xcode has a built-in view debugger that captures all the views inside the currently running app, then shows them in 3D. As an aside and in its defense, Xcode 9 is doing more with "view debugging", e. I have macbook with M1 chip with Xcode 13. I am working on iOS Xamarin app and would like to debug its view. 1 can't find 'debug view hierarchy' button. 18 Unable to capture view hierarchy. They are simply referred to as what type of object they are. onAppear and . I do not know where to place break-points right now as there are way too many classes. What do they really mean? Thank you in advance. If this the case then give some x & y, say New to Xcode, but I want to check the value of variables in The real solution here is using debug mode instead of release mode to build the app break point you are using to inspect these variables is being set at a point in your code in which you are certain the view has been laid out viewDidAppear for example. Xcode is now interrupting your app and handing the reigns to the You are inspecting an object such as a label that has an intrinsic content size. I'm trying to debug the view hierarchy in an app extension, but I don't get anything useful. h> @interface UIView (ExploreViews) - (void)exploreViewAtLevel:(int)level; @end Update: Starting with Xcode 9, view controllers are listed right along the view hierarchy in the visual debugger. 1 Can't see debug info Xcode 6. 3. As of Xcode v9. Click on the "Debug View Hierarchy" button while your app is running to pause execution and inspect the views at the current moment. May also work with newer macOS and Xcode versions, though I haven’t tried yet. 5? 2. Choose Debug > View Debugging > Show Alignment Rectangles. The intrinsic content size generates height and width constraints; that's what intrinsic content size is. Did you delete all the . Load 7 more related questions Show fewer related questions Sorted by: Reset to default Know someone who can answer? Share a Along the lines of what Yannick suggests, Erica Sadun has code here that pretty-prints the view hierarchy (with class and frame information). The exclamation mark effectively says, “I know that this optional definitely has a value; please use it. I start the View Debugger in Xcode. In this video I'll go through your question, provi What does the gray exclamation mark means in Xcode 8. Now we can start debugging. Debugging the view hierarchy shows me that for some reason, the UIView is displayed in front of the UILabel. Debug Symbols are additional information about your source code that are used to help debugging. Download icons in all formats or edit them for your designs. Project 13, for example, has enough in there to be interesting. Visual debugger. One solution is to "guide" the shadow The UI debugger provides the programmer with runtime constraint errors highlighted with a purple [!] symbol, and when clicked on you get the view that has the issue highlighted. Yes, it's possible to see in what You can access the view hierarchy debugger by choosing Debug > View Debugging > Capture View Hierarchy from Xcode’s menu bar, or by pressing Command-Shift-C. I quoted the view word because I don't know if it is a UIView. 1 now, running on real device. One of XCode's coolest features just upped and vanished on the latest project. See for example the The "Debug View Hierarchy" feature of Xcode is very convenient to break down and debug a complex view hierarchy. In the debugger, it only shows the value of these strings up to a certain length and then just ellipses them Using Xcode 8. Drag the view in any direction to see a 3D representation of the current view stack, and use the controls at the bottom of the canvas to adjust the views and the spacing between them. Fig 1: User List view. 3. In one project, 'capture view hierarchy' and 'pause program execution' buttons are simply not working. view may be starting from (0,0) and Navigation Bar is top of it. 1 (6A1052d) Test project: My project ( support for 64- bit and iOS deployment target is iOS6) Test results: The View Debugging options are only enabled in iPhone5 with iOS8 Test environment : Xcode Version 6. I had this same problem in Xcode 9. Go back to Xcode and click on the Debug View Hierarchy button in the Debug bar. 1 (6A1052d) Test project : Xcode-ViewDebugging ( supports 64- bit and iOS deployment target is iOS8) Test results : First, launch a project with some interesting UI. by Johan Steen May 16, 2018. In this tutorial I will explain how to use Xcode's debug view hierarchy, which is very useful as it allows you to see very clearly which layer certain elemen Now I am Debuging a project. When I update to xcode 9, and I click "Debug View Hierarchy", it shows "Unable to capture view hierarchy" What can I do about this? ios; objective-c; xcode9; Share. " even though (in my opinion) I've got constraints all along the Y-axis. viihua opened this issue Jun 2, 2022 · 1 comment Comments. Screen will render. For example, a button is just refered to as UIButton rather than the name of the outlet. 0. This setting outlines the edges of your views. Follow edited Nov 5, 2018 at 22:29. debugDescription) Important note: Sometimes the view hierarchy is one view "behind" when you print it because it is using the cached hierarchy. I've tried deleting derived data, restarting the simulator and Xcode, and downloaded and tested from my own phone. When I run my app and then try to get the debug view hierarchy for my app Xcode immediately becomes unresponsive (it does pause the app but then becomes unresponsive). I even re-installed Xcode and I still have the same problem. To try to debug it, set your active scheme in Xcode to be AppName > iPhone 11 Pro Max. There are several ways of using them each with their own added value. Look at the Build action in the scheme and Use the View debugger, available when targeting iOS, macOS, tvOS, and watchOS apps, to diagnose the reasons an item in your user interface is in the wrong position or is the wrong size. The ultimate reason was that I had a UUID() left somewhere. 0 and you will still use that function freely. 7 want to konw: 1. This feature in Xcode provides a 3D exploded view of your app’s interface, showing you the entire hierarchy of your SwiftUI views. It isn't necessary to have a deep understanding of LLDB or LLVM to make use of Xcode's debugging tools, but it certainly doesn't hurt to become familiar with LLDB and LLVM. Step-by-Step Guide to Viewing the XCUIElement Tree. This is what works for me. Xcode has a Behaviors pane accessible via Xcode->Preferences->Behaviors for improving developer workflow with custom automations like Xcode debug view hierarchy but stuck at capturing user interface wait long time ，but no result Xcode 12. You can make this into a UIView category with the following interface: #import <UIKit/UIKit. Well I think you need to tell the view to update constraints, write this and check: [displayView updateConstraintsIfNeeded]; Also test that your displayView is added to self. See also this wikipedia article about debug symbols. 1 For iOS develop,the debug view hierarchy didn't work. An example of using Xcode Mark Lines in a view controller. The debugger displays a 3D rendering of the current view on the canvas in the center, with a representation of the view hierarchy in the Debug navigator. In Xcode, you'll see that there are some objects with a purple icon containing an exclamation mark next to them. I know I can "focus" on that view by double-clicking it or selecting "Focus on UIView" from the contextual menu. Up until Xcode it was possible to attach LLDB to any iOS app process and through that see its view hierarchy. g. I am using Xcode 10. 初步判断是JXSegmentedTitleCell中的maskTitleLabel导致的，没有使用到遮罩Title. Adding a // MARK header ios: Xcode Debug View Hierarchy: Unable to capture view hierarchyThanks for taking the time to learn more. Thanks, John While debugging a program in Xcode I have several CFStringRef variables that point to strings with lengths around the 200 character mark. Then using the simulator alone (not Xcode) click on the AppName to let it run. As In my experience the simplest way to get your logs, when debugger fails - is to use Logger with custom category + Console. Provide details and share your research! But avoid . Now run the program as normal, then in Xcode go to the Debug menu and choose View Debugging > Capture View Hierarchy. You’ll be presented with the memory graph of the app: The initial screen looks pretty simple. I'd like to check the contents of an XML file at a specific point of execution while debugging in Xcode. Share. exists. This is extensible to other debugging scenarios such as threading and runtime crashes I suppose, as well as AVPlayer. 0 (8A218a) I get "Height is ambiguous. Then go into Xcode and do Debug > Attach to process by PID. It always shows like wireframes without content as below. Actally there are 2 projects using Remoting, which is server, and another is Client. Use the Debug > Attach To Process menu once it loads to select your target app; Now click the little View Debugging button or use the menu again: Debug > View Debugging > Capture View Hierarchy; This should show you a sort of "exploded" view of the app's views as well as a tree of their relationships in Xcode's left pane. Is there any way to peek inside the view hierarchy of the contact composer view? On the left - how the composer looks like . While I am converting my iPhone app to a universal app and just added the launch image for the iPad. com/iOSAcademy🎥 Subscribe for more: https://www. These free images are pixel perfect to fit your design and available in both PNG and vector. The constraints in gray are showing you the The UI view hierarchy (aka element subtree) can be viewed by printing the debug description of the application whilst a test is running. Xcode parses those comments into chapter lines within the method navigator. 9. Xcode offers a nice tool for debugging your app view hierarchy. When Xcode displays the memory graph it will pause the execution of your app. Wait a few seconds for Xcode to learn the app’s details. View from a ship with an Alcubierre Drive Debug View Hierarchy. The image works fine, but in xCode there is a large triangle with an exclamation mark in it. The alignment rectangles are the edges used by Auto Xcode has a view debugger tool that allows to inspect view hierarchy. Once you know a particular view exists. ” Another way to check non nil value is (optional unwrapping) View Previews: SwiftUI’s live preview feature in Xcode provides a real-time representation of the view hierarchy as you develop. app. For instance, I get a project from others and want to know where the code or view definition is on the page. 12 use xcode to debug view hierarchy get empty, not Xcode 6 now has 3D view hierarchy inspection built in like Reveal App and Spark Inspector. The first, under Info, is that Debug Executable is checked. 2 macOS 10. 12 use xcode to debug view hierarchy get empty, not show the view. It appears randomly when Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. 1, Debug View Hierarchy displays SpriteKit scenes with a SKCameraNode incorrectly. Both of the two subviews inside the view have a height (one have height as constraint, and one as intristic content size). Under the hood, Xcode's debugging tools take advantage of LLDB, the debugger of the LLVM project. It will take a second for Xcode to capture the full view hierarchy, but when it’s finished it should look like this. For some reason the Debug View Hierarchy showed it with an alpha of Not AFAIK. Minimize both left and right navigators window. You can learn more and buy the full video course here https://bit. bundleIdentifier!, category: "MyAmazingLogger") override func viewDidLoad() { let content = "content" Xcode Debug View Hierarchy: Unable to capture view hierarchy. When you view the ZStack in Xcode's Debug > View Debugging > Capture View Hierarchy, the view hierarchy is represented in a 3-D space to help you visualize the layout of the views. After some digging, I found it may be related to the lacking of OpenGL. In Sever project, I set some break ponits in the code. And then click the Debug View Hierarchy button. And when I start the sever, I find these break ponits are with exclamation marks. What does this icon mean in Xcode 4. Upon hitting the "Debug View Hierarchy" button in the debug area toolbar while in any scene of my app, Xcode Debug View Hierarchy: Unable to capture view hierarchy. Shows fine in the previous two. Below are the top 5 Xcode features that help me in my day-to-day iOS development And then press the button. MAC Sierra 10. The I'm in the midst of debugging a hard to find issue with a view in XCode, and would love it if there was a way to inspect the current view hierarchy. When the app is running in the Simulator, Xcode shows the debug bar. All view modes I tried changed nothing. In the past, my approach has been to remove all views in my app, and add each view back in, in order, until I Xcode provides tools that help you visualize the views and the constraints in your view hierarchy. You should see an interface like the one in the following image. Note that I’ve highlighted some important features: Figure 10. 15. Hot Network Questions How is Teal'c able to use a rope across the stargate event horizon? The View Debugger in Xcode is a valuable tool to find and fix problems in the user interface of you iOS apps. Click the A layout issue appearing as a purple exclamation mark of a layout issue on a what appears to be a Firebase related view - UIInputSetHostView . Are there any limitations to using this feature with extensions? If not, what could I possibly be doing Xcode Debug View Hierarchy finding viewcontroller. 10. when click the debug view hierarchy button ,the page has nothing, and print "[UIWindow viewForFirstBaselineLayout]: unrecognized selector sent to instance 0x7fb9dae257d0" . As yet, I've been unable to find any key combination that allows you to MAC Sierra 10. View your app hierarchy in Xcode 🔨 #Xcode #Swift #iOS #softwareengineer💻 Source Code: https://patreon. Instead on click on Debug View Hierarchy icon in xcode , Go Debug -> View Debugging -> Capture View Hierarchy; Try to use xcode in maximized size. Why is debug View Hierarchy not showing for UIImagePickerController and all its views and instead it only shows one black view? Can I technically make the same for my own views and view controllers? Xcode Debug View Hierarchy: Unable to capture view hierarchy. Important features of Debug View Hierarchy. After few seconds, you should see that Xcode Debug area becomes active and you can now Although Xcode does not have a direct command like Appium’s ‘page’ command, you can achieve similar results using the Xcode Console. To see the views in the simulator: Run the app in the simulator. FAANG Information & communications technology Consumer electronics Business Technology Business, Economics, and Finance forward back r/iOSProgramming A subreddit to discuss, share articles, code samples, open source projects and anything else related to iOS, macOS, watchOS, tvOS, or visionOS development. Make sure to take full advantage of the Debug View Hierarchy tool: You can expand out all nodes in the View Hierarchy (left pane) down to constraint values. Click the “Debug View Hierarchy” button in the debugger view (circled in red on the image above). Load 7 more related questions Show 使用Xcode的Debug View Hierarchy查看视图层级时有Optimization Opportunities警告 #210. It’s a powerful tool for identifying improper layouts or understanding the parent-child Tap the "View Debug Hierarchy" button; Watch the layout issue displayed as a purple exclamation mark on UITextEffectsWindow-> UIInputWindowController-> UIInputSetContainerView-> UIInputSetHostView; Hover on the purple exclamation mark and watch the tooltip message: "Position and width are ambiguous" Firebase SDK Version. Switch back to Xcode. view!Are you using Navigation Bar?If yes then is it translucent?If yes then your self. My guess was that it is some sort of CALayer, so I tried multiple different combinations of the following aspects: CATransformLayer I remember for UIKit we could see the related viewcontroller name in debug Navigator, but with SwiftUI, how could we do the same. But Metal content/layers/views do not render anything in this With the project open in Xcode, from the menu: Debug / Attach to Process, choosing my Xojo app. What does this mean? I thought it might because the file size was too large? I reduced it from a meg to 168k and the triangle is still there. Modified 7 years, Meaning of symbols in the Debug area from Xcode. Xcode offers developers a mature development environment with a powerful debugger. Load 7 more related questions Show fewer related questions Does Android Studio have the equivalent of view debug like xcode? Ask Question Asked 5 years, 6 I am trying to quickly learn a new code-base (android-based) and a great way of doing that in iOS is using xcode's view debugger. It allows you to see how different views are nested and interact One problem I freqently run into in XCode's view hierarchy debugger is the portion of my view that I'm interested in is wayyyy off to the right or left edge of the xcode window. Imagine if it didn’t 🙂. Look at the Build action in the scheme and make sure the Debug executable checkbox is selected and the app is set to launch automatically. Without this, none of the standard debugging capabilities are available, including LLDB and the view debugger. 17 Xcode - Debug View Hierarchy Prevent dist-upgrade from uninstalling a package without using apt-mark hold Enhancing mathematical proof skills using AI (in university teaching) The origin of "concave up" and "concave down" I've thought I've seen all, now the Debug View Hierarchy button has decided to take a hike. you can then try using something like this to confirm the button/element is visible within the current view by passing it to a helper Get free Exclamation mark icons in iOS, Material, Windows and other design styles for web, mobile, and graphic design projects. In this 3-D representation, each view is positioned in a However, when I try to Debug View Hierarchy in Xcode, I see only the blank _UIRemoteView. Use Quick look in Xcode Test environment : Xcode version 6. “Once you’re sure that the optional does contain a value, you can access its underlying value by adding an exclamation mark (!) to the end of the optional’s name. 5 Swift 3 Attempt to present whose view is not in the window hierarchy. 9 Xcode Debug View Hierarchy: Unable to capture view hierarchy. You can get the memory address of the selected view from the inspector in Xcode and then use the console to get the view's view controller using It seems there is no way to observe the SwiftUI view hierarchy or get a SwiftUI view identity. Hello, While attempting to view the application structure through Xcode's Debug->View Debugging->Capture View Hierarchy, the entire screen is black, and I can see that many of the elements are missing/not found. Example: import os class MyViewController: UIViewController { private let logger = Logger(subsystem: Bundle. 2. Copy link viihua commented Jun 2, 2022. What we care about is the left pane and those purple exclamation marks. You can then filter that list based on classes, subclasses, and contents of your views, or right-click on a view and choose Focus On UIView to view just part of your view hierarchy. Is it possible to view the contents of the file, either through the Organizer (I'm debugging using actual hardware devices, not the simulator), or by typing in some sort of command into the output/console? I am using Xcode 4. 6 Xcode - can't find Debug View Hierarchy button. How to solve the problem? 2. More info at This video tutorial has been taken from Troubleshooting with Xcode. The second one Fortunately, UIView has a hidden method called recursiveDescription() that prints out an ASCII rendering of your view hierarchy – all the views, their children, their positions, On the left side the View Debugger presents the view hierachy of the currently visible view. Xcode Mark Lines are added through commented code. selected 'Wireframes' view mode does noting but just highlight the frame. As I'm just starting my SpriteKit journey, I do stumble upon quite a few problems along the way. After a few seconds of thinking, Xcode will show you a screenshot of your app’s UI. 9,952 13 13 gold badges 74 74 silver badges 114 114 bronze badges. However, modifiers like . Why is this a problem? I see what you are seeing in the debug area when the app isn't running. In the left pane, you will see a purple exclamation mark next to the view (and it's parents) with the issue. This will open up Xcode and show you the visual debugger for the memgraph file. Xcode 6. print(app. Click on thread option depicted in below image, list will open, select any option from list, and again click on "Debug View Hierarchy" button. Can't find anything that looks like an on/off switch for the thing and have capabilities and debug settings matched to the ones that work. Where is debug view hierarchy button in Xcode 12. It is not selectable in the Debug View Hierarchy tab, but I can hover the cursor over it and it gets a purple highlight color, as in the picture. But sometimes it would be nice to see how others are structuring their UI. When I run the app, the debug area has additional buttons for stepping through the code and the Debug View Hierarchy button. uiuvn abod vmeblh qyybznk kdp dtflde otov grf ofrzac gmaijvgy