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So I have this weird Problem where I have 4 UIButtons in my App not working at all, even though i have double checked on having them correctly linked to the Storyboard. So i tried to disconnect and reconnect them but the icon indicating that its linked didn´t disappear. So I checked what else the function is linked to and it seems somehow it got linked to the main.storyboard, and i guess for that reason, these are the only ones not working.
So I tried to disconnect it from Main.storyboard, but to no success so far.
How can I remove a connection to the storyboard as sender and why does it appear in the first place?
I too did it accidentally for a button.
Connected a correct segue to the button and accidentally connected one more to a UICollectionView and I was getting this :
Checked the storyboard on right clicking the button :
and found the two outlet connected. Removed it on clicking the cross icon and it worked.
If you click on the connection showing in UIViecontroller it will not redirect here.
you can also check all the connected referencing outlets here:
So i fixed the Problem by copying the code to another file and only "rewriting" the functions that were linked to the given problem.
All i could find to this problem was some old answer that explained that the link referrs to a ViewController that the Code originates from: https://stackoverflow.com/a/37324993/10160115
Even though the Code i wrote is not copied it seems that XCode has created exactly such a referral to the storyboard it was linked to, so it linked the function to itself but couldn´t find any Button to link it to so it just linked it to nothingness.
It fixed the problem and the buttons work the way they´re supposed to be now but it´s a weird way of fixing this, but since there seems to be no connections inspector for the storyboard itself i wouldn´t know how else to fix this
To solve this problem you should (for macOS Catalina 10.15.4, Xcode Version 11.1):
Close your project and close Xcode
Open /Users/XXXXX/Library/Developer/Xcode/DerivedData and delete your cache of project
Open /Users/ХХХХХ /Library/Developer/Xcode/DerivedData/ModuleCache.noindex and delete all cache from this directory
Open your project again and click Product > Build
I'm using Git and we are 2 people coding together. I pulled my friend's code, run it and it worked as it should be. Then I merged our parts and cleaned conflicts (almost all of them were in storyboard). Since i'm doing this merge process for a while, i'm not all stranger for these details.
However, when i run the merged version of code, i get the error:
The document "Main.storyboard" could not be opened. The operation
couldn’t be completed. (com.apple.InterfaceBuilder error -1.)
I can't open storyboard as interface builder either. When i try it, I get the same error. I read previous post about this error but as I mentioned, I can open and run both versions of code in my XCode before merge. Thus, there is not a font or attributed string problem.
What may be the problem?
I got this issue, after I solve the conflicts which is merged by svn.
I could only see the source code of my storyboard, I could not open my storyboard as interface builder. So, after my struggle,
1)I delete the topside space line in my storyboard source code
2)and close my Xcode and simulator
3)restart my project
it becomes regular, oops, the space line on the source code will affect our storyboard ！
there are conflicts in Storyboard. You can take last working code of storyboard from github. select storyboard select version editor and copy last working storyboard and replace xml with existing xml.
I guess your storyboard still have confliction.View your storyborad as source code, then fix all conflictions. After all, open it again as Interface builder
For me the only thing that worked was to create a new storyboard file, open the old and the new storyboards as source code, and copy the xml from the old to the new storyboard. I didn't take the whole xml, just the scope of the <scenes> </scenes>
I had to create a new Storyboard file. Then cut and paste the "scenes" tags from the old and put into the new. I then had to delete the old Storyboard from the project in order for the project to build successfully!
I guess the problem is that storyboards don't merge very well, I think it is better to init your UI from code so there will be no troubles during merges. Anyway you should try to rollback and merge it again.
As other mentioned, there are likely merge conflicts in the storyboard file.
If you can't easily solve the conflict by either picking --ours or --theirs, you will have to perform the merge manually in the storyboard file.
What I do is open in in a text editor (e.g., TextEdit.app - but make sure it opens documents as plain text, in Preferences).
Then, locate any occurrence of the git conflict markers (or a portion thereof, e.g., "<<<<<"), and pick the code fragment that you want to leave (and remove the other, of course).
EDIT: As Cong Tran mentioned (and I forgot), you can open storyboards as source code from within Xcode itself (see his answer).
Fast way to fix
Copy the storyboard Id shown on the error prompt window
Right click on your storyboard
Choose Open as => Source Code
Search the id and delete one of the duplicateID and you are done!
i would suggest , right click on any of the files and click on finder then you will have what you need and drag and drop
Xcode storyboard assistant editor stopped showing related files.
"Automatic" is selected and "Class" is filled in Identity Inspector.
It was working before, but know it has stopped.
"Auto" or "CounterPart" modes are still woking for other files except StoryBoard.
A few days ago, I tried to update from Xcode 5 to 6, but later on gave up.
Would that have something to do with it?
With XCode 11 onwards, you can option(alt) + click on the file that you want to view in assistant editor.
Simple Fix.
Found the solution (at least worked for me), it's the same bug that causes you not to be able to create new outlets. You must delete the [DerivedData] folder:
Close the project you are working on with.
Delete the【DerivedData】folder of you project. (This folder may inside your project's folder, or inside
~/Library/Developer/XCode/DerivedData/(your project)/ ) or somewhere
else that were setup by you.
Restart Xcode.
see here.
In same case this worked for me:
Right click on ViewController file(on left pane) and choose Delete -> Remove Reference.
Right click on folder where this ViewController file was and choose Add files to .. and add this ViewController file which your just deleted.
Profit.
Deleting the Derived Data didn't work for me nor force quitting Xcode and restarting it.
The only thing that worked was deleting both the class and the storyboard (only the reference to them) and adding them back to the project.
Hope to help someone.
If anyone is wondering how to find Assistant editor in XCode 11 then
please find the steps from the below image. You can show this options
in storyboard or Xib files on upper left corner.
Maybe it's too late but just with the keyboard, you can launch a reset for associated files.
Use the keyboard :
command + option + shift + z
You can find it in the menu Xcode->View->Assistant Editor->Reset Editor.
Click first on the assistant window, then click on 'option'+'alt' and right click on the view controller that you want.
I have Xcode 13.1 and none of these solutions is working for me, but this simple solution works for me every single time. With your Storyboard and (empty) Assistant Editor open, in the upper right of the Editor window click the "Add Editor on Right" icon Editor On Right Icon, and just as promised, it will open a new editor to the right of your Storyboard and (broken) Assistant Editor, only the Assistant in THIS window will be working! Just find the "Close Window" x on your broken editor, close it, and in its place will be your shiny new working Assistant!
Full Editor View of where to click to open the new Editor On Right
Tried all the above methods whereas after simply running the app Command + B fixed this issue and I was able to select the screen under automatic.
This command on terminal fixed my issue:
defaults write com.apple.dt.XCode IDEIndexDisable 0
simply exiting and reopening Xcode worked for me.
For Xcode 8+ versions
Check at top process indicator that if Xcode is "indexing" files... if yes, then, please wait until it finishes. Once it get finished. Your file will automatically appear as counterpart in Automatic section.
If Xcode is not showing "indexing" in process bar, then perform as #Anna Chiara's Answer
I deleted ~/Library/Developer/XCode/DerivedData -> didn't work
Xcode->View->Assistant Editor->Reset Editor is disable
Finally, I figured out that the class name of File's Owner of .xib file is incorrect (the class doesn't exist). I corrected it and Assistant Editor works again.
Hope this helps you
I had the same problem. Finally this is what worked for me.
Changing the name of the ViewController File.
Change the name of the class to the new name via the Refactor tool
Refactor tool
The only thing that ended up working for me was copying over the code from the offending ViewController files and completely deleting them, then creating new ones with the exact same name and pasting in the previous code.
The assistant then linked up to the new ViewController files with no issue.
None of these answers worked for me w/ XCode 13. However, the following worked:
Rename the ViewController class to ViewController2
Update the reference in the storyboard to ViewController2
This made the assistant editor appear.
Change the name of the class back to ViewController. Change the reference in main.storyboard back to ViewController and hit enter (Step 2)
I had same issue and spent almost 2 hours of trying different aproaches finally I found something to solve problem.
I've created two or more VC at the same swift file and I think that's why IDE confused about the files.
So I suggest that you should delete your viewcontroller class and clean than reassign class.
I hope it works for you too.
For what it is worth, this was happening to me for the last couple days on 9.3 . I had just added a new build schema for an alternate debug symbol on testflight. It was not until I removed the new schema and then deleted Derived Data and restarted did it start working again. I have re-added the new schema back in and it continues to work. Not sure what the issue was, but that is what solved it for me.
In case anyone is watching I had a bizarre instance of this (Xcode 11): I deleted a View Controller that I'd done incorrectly; dropped in a new one, created the UIView and associated. BUT I didn't bother to create the outlet from the View Controller on the previous screen. Strange that it let me work for a few minutes, then after I had turned off the assistant editor to do something else, turned it back on and only had the UIResponder.h file. Edit - this happened again. Had to delete the 'wire' to the next screen, then recreate - then option to get to the correct .m and .h files reappeared.
I faced a similar issue and here's what I did
I had a swift file and a xib file with its class connected to the swift file like so inside a group folder, and it doesn't show that they're connected.
But when I take them off the folder the assistant works somehow, so I took them off the folder and made an outlet from a UILabel then put them back inside the folder then they're permenantly connected.
Quite Xcode and reopen it. This is solve my problem.
I had the same problem. But my problem was about having the VC's under "View Controller" folder. When I move VC's to main folder instead of "View Controller" folder, I was able to reach the assistant without problem. If you have the same issue like mine, you can solve by deleting all the VC's and create again under your sub folder.
Just add the Class on right side of your story board which you want to open in assistant
I go to click on the segue in my storyboard and nothing shows up in the attributes inspector.. why would this be? All I ask for is to identify this segue in code. Can someone help me? I have x-code version 5.1.1.
EDIT: OSX Version : 10.8.5
There is a show/hide button next to "Storyboard segue", conveniently someone thought it was good UX to hide it, so just hover your mouse near that area and your will see it.
In my case i managed to solve the issue (Solution for “NO SELECTION”) for XCode 7.2 as follow :
Select another file (which isn’t an Interface Builder type) in the
current tab with the issue.
Open a new tab and select the Interface Builder file which was having
the problem.
Whenever I attempt to open up my storyboard, Xcode crashes with the following error report
The funny thing is, the app works fine in the simulator and builds without errors. What is causing this crash? I see two possible crashes:
Exception reason: UITableView dataSource is not set
, but that shouldn't make the storyboard crash right?
Details: Failed to compute auto layout status IBLayoutConstraint, IBUIButton, IBUIDatePicker, IBUITextField, IBUIView, IBUIViewController, and IBUIViewControllerAutolayoutGuide.
Which doesn't give much information at all.
I have been using a storyboard with Xcode 5 for some time, so the question does not appear to be related to moving from Xcode 4 to 5. I can open the storyboard as XML and I can open my iPhone storyboard just fine.
If you are using git, I would recommend reverting to a time before this problem started.
If you are not using git, and you are absolutely sure you did not edit the xml for the storyboard then I would say:
1)find the storyboard file using the finder.
2)copy it to your desktop.
3)go back to Xcode and delete the storyboard from your project, select "move to trash". 4)re-import the storyboard file into your project.
Ive had similar problems with Xcode 5 and either reverting using git or the steps above usually get me back up and running.
Exception reason: UITableView dataSource is not set
Details: Failed to compute auto layout status IBLayoutConstraint, IBUIButton, IBUIDatePicker, IBUITextField, IBUIView, IBUIViewController, and IBUIViewControllerAutolayoutGuide.
The errors described above lead me to think that one if not all viewcontroller(s) for the items listed above lost their connectivity to viewcontroller.h / viewcontroller.m files. I would make sure you have everything wired up correctly, and you can check this by making sure the items in your viewcontroller have a circle in the gutter (next to the line numbers) that is filled in (solid) if the circle is not filled in then it means your items are not wired up to your viewcontroller. I would post a picture of your .h / .m file of your viewcontroller so we can further investigate.
I ended up copying each view controller scene (in XML) into a new storyboard. Some view controllers could not be copied without the storyboard crashing so I had to recreate about 4 of them, but by and large I got the majority of my work back.
What you need to do is reopen the project again in Xcode 5 and then go to the storyboard. Then at the right side choose for "Identity and type" and then set "opens in" to Xcode 4.6 to be able to open it in Xcode 4.6. And disable auto layout, somehow when you open it in xcode 5 it asks you to update it, I think you did that without a thought, happened to me as well :)