Xcode previews isn't showing view dimensions in the "selectable" mode. Does anyone know how to re-enable them?
I tried going on Editor>Canvas>Show View Bounds, which I expected to fix the problem but that did nothing to my knowledge. I also tried going on Preferences>General and found nothing.
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I'm experiencing weird crash in NSOutlineView: when i click "collapse" button, app crashes immediately and even "exception breakpoint" doesn't help to see where the problem is.
I've tried to run app without debugger, and reproduced the problem. Once app crashed, i've got OSX crash window and was able to extract crash message from there:
The window has been marked as needing another Update Constraints in Window pass, but it has already had more Update Constraints in Window passes than there are views in the window
there also call stack, but it won't help since crash happening inside libsystem_c.dylib, so i'm not posting it here.
It seems there is something wrong going with auto layout. Absolutely have no idea about next steps. Please give me an advice!
Also, one more thing, that began only after update to OSX Mojave.
After hours of debugging and testing, i noticed that that message is caused by "infinite layout loop".
Different code, related to outline view was causing NSSplitView to layout. And delegate method - (CGFloat) splitView:(NSSplitView*)sender constrainMinCoordinate:(CGFloat)proposedMinimumPosition ofSubviewAt:(NSInteger)dividerIndex has been called about 200 times prior to crash.
It's hard to catch this bcs it's not actually infinite recursion, so just debugger doesnt help a lot.
I just added simple code that helped me to identify the issue:
static int a = 0;
NSLog(#"Layout: %d", a++);
Hope my experience will help somebody else!
For anyone who is having the problem in Xcode 14 and macOS using SwiftUI:
I just had the same crash by hiding a view with an animation. My main view contains two views, one view contained an empty ScrollView, which didn't cause a problem by itself, but by changing it's size it crashed. Just adding a basic Text within the ScrollView solved my problem and the app doesn't crash anymore.
I updated my build to IOS 14 and Mac OS 20.15.6 and the error went away.
try turning off 'Use Auto Layout' checkbox in nib (in File Inspector tab).
May have to disable it for each and every view.
Also, unrelated, but Mojave forces you to use Core Animation.
Most of my nibs have 'set wants layer' turned off.
However, in one of my nibs I had a stray setWantsLayer checkbox checked.
when I unchecked it, the view (NSSearchField) drew properly
Am using Xcode 9.1 and my Xcode error while dragging objects from object panel in storyboard its mirroring automatically as shown in picture .need help in solving this !
Very odd. At first I thought it was simply rendering for a RtL locale but I don't imagine the chrome around the rendered view should be mirrored as well. Out of curiosity are you testing a Right-to-Left locale? If so, does this persist when that preference is disabled?
Otherwise I'd try cleaning the project, restarting Xcode, and removing your .xcuserdatad file, in that order.
[EDITED] After spending a couple of days on a iPad app (utility s/w for myself; not for release), I accidentally clicked on disabling size classes in Xcode (6.2). I only want to turn off Auto Layout temporarily so I could figure out why my popover scene was not rendering.
Now, all the UI elements are gone but the guidelines for both the main scene and the popover scene are still around. History seemingly shows nothing that will bring back the UI elements. I closed the Xcode project and opened it again, but only the red guidelines are visible.
Has anyone run into this? Any idea how to fix this? [EDIT] I'm referring specifically to the UI elements and getting them all back -- else I'm going to have to spend a couple of hours reconstructing and positioning them. I browsed StackOverflow and Google Search but I've not seen any relevant suggestions.
First, when disabling auto layout it will disable the size classes as well.
I would suggest that you update your Xcode to 6.3. Then that will probably be gone.
Hope that helps :)
Edit
regarding the comment
First off I would print the frames of the UIElements to see whether they are still on the screen. (Using `println("(button.frame)")
Then, if they are not there, change their frames / centres) to somewhere on the screen.
If they are in the bounds, check their sizes to make sure they are large enough to be visible. If they are then make sure they are not hidden and their alpha is 1.
In storyboard you can open the side-bar and then change the element's position in the Attributes inspector as shown here:
iPhone simulator is not showing some of the labels properly. Has anyone else experienced this? Does anyone know how to fix it? I also noticed that if I drag the buttons too quickly, xcode would crash randomly...
Thanks
I have come across this issue recently and it was a weird bug. For whatever reason, the x/y axis was off in what I was seeing in Storyboard. So the UILabel and UITextfield I had were being displayed behind my NavigaionBar. I adjusted the x/y values in the size inspector on the right side pane of Xcode and it worked perfectly. Those value should be an accurate representation of the placement of storyboard objects.
Not sure about the quick dragging, sounds like an Xcode issue that may be fixed by now.
We just set up a whole bunch of development MacBooks in our office. We all set up the computers exactly the same as far as I can tell (just installing xcode and not changing any settings). We even distributed the exact same xcode project to everyone to test whether or not everyone was set up correctly. For some reason though, my iPad simulator incorrectly renders the positions of Objects on the UIView controller.
I can make a really basic application and slap down a UIView controller with the storyboard editor in xcode 4.3.1 (newest version ATM), and add a button to it. When I run this on the simulator, it will look fine on the iPhone one, but when I try to view it in the iPad, it seems that some elements will scale to the iPad resolution fine, but others will not. The components that do not, seem to be in the place that they would be if they had been rendered on the iPhone.
The weirdest part of this problem is that I can't find anyone online who has had this same issue. I have already tried deleting and re-installing xcode and the same thing still happens. I fear I might have to re-install the OS and start from scratch.
How it looks on the iPhone simulator:
And on the iPad simulator:
I don't think that's an SDK issue, I bet that you are writing code that fits for the iPhone screen and not for the larger iPad screen.
I think that you added just the button and is Autoresizing Mask is not set properly.
I've done some measurement an it seems that:
The distance from the top of the view is in fixed (~360px);
The width is fixed (~260px);
You need to give the button a fixed distance from the bottom (as it should stay on under the plot) and remove the left fixed margin so it can be centered.
You need to take a look at the UIViewAutoresizingMask for the UIView's autoresizingMask property.
button.autoresizingMask = UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin;