Could not insert new outlet connection error

Question

I have created a custom cell for loading into a table. The interface is complete and now I am trying to link the xib and the class.

I have the split screen view open and I try to control drag the item so that Xcode can make the connection for me. When I fill in the name and click connect I get an error:

Could not insert new outlet connection: Could not insert source code into document at URL://localhost/Users/Velox/Projects/CompanyName/ProjectName/ProjectName/HistoryCell.m because it does not contain a class definition for the class named HistoryCell.

I have set the custom class of the xib to HistoryCell.

What am I missing here?

Thanks.

try to connect it programatically by setting your iboutet in .h file. — iOS Developer, Jun 12 '12 at 11:58
possible duplicate of [Xcode 4: Creating a UIView xib, not properly connecting](http://stackoverflow.com/questions/6703054/xcode-4-creating-a-uiview-xib-not-properly-connecting) — Max MacLeod, May 22 '15 at 14:33

score 75 · Answer 1 · answered Aug 05 '13 at 11:55

75

This problem seems to be an Xcode bug which creeps up mostly when you replace a file with a new file of the same name. Xcode seems to keep a reference of the older file of the same name.

Anyhow, the way to fix this seems to be -

Clean the project

Click <Your Project> in Project Navigator view. Go to Compile Sources under Build Phases of the target for which you are building. Remove and add back the .m file which is giving you trouble.

Alternatively, in the File Inspector (Utilities view) of the NIB file, under Target Membership, uncheck and check back the target name.

Restart Xcode for good measure.

Of course, deleting and adding back the .m file alone should fix it too.

Steps 1. and 2. alone fixed it for me. Feel free to ask if any step needs expanding.

Cheers and happy coding :)

answered Aug 05 '13 at 11:55

codeburn

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Steps 1. and 2. did it for me too. Thanks for your help ! – phyzalis Feb 25 '14 at 06:03
Steps 1 and 2: ditto for me. Thanks! – Rob Winchester Jul 07 '15 at 16:26
Did Clean, Build and step 3! Thanks! – Ryan R Oct 26 '15 at 06:24
Steps 1 and 2 just solved it for me in Xcode 7.3.1. Was happening on a ViewController file which had been renamed, and outlet linking lost track of the new file name. Thanks! – Francis Pierot Jul 27 '16 at 12:58

score 20 · Answer 2 · answered Feb 04 '13 at 23:12

20

I fixed this issue by deleting the .m file (reference only) then adding it back in to the project. I think XCode gets corrupted at times (and I'm on the latest 4.6).

answered Feb 04 '13 at 23:12

Daniel Ryan

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Ah good :) So much hassle I had to go through to find this simple fix. – Daniel Ryan Mar 24 '13 at 21:27
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It worked for me for a slightly different error: it could not create outlets because there was no "@implementation" was found... – Sébastien May 18 '13 at 16:31

score 5 · Answer 3 · edited May 23 '17 at 12:02

5

https://stackoverflow.com/a/16166878/521946

Try to clean your project and restart Xcode.
If it still cannot be connected, follow the Utilities navigation view of Xcode, in the Target membership section, uncheck & check the checkbox, it will be work. Maybe you should rebuild the project after unchecking.

edited May 23 '17 at 12:02

Community

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answered Apr 23 '13 at 11:07

Elf Sundae

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score 4 · Answer 4 · edited May 23 '17 at 12:10

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Quit XCode, then purge the derivedData using:

rm -rf ~/library/Developer/Xcode/DerivedData/*

Restart XCode and connect.

If you want, create an alias

alias purgeallbuilds='rm -rf ~/library/Developer/Xcode/DerivedData/*'

in your .bash_profile as suggested here.

edited May 23 '17 at 12:10

Community

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answered Dec 11 '14 at 18:11

benaneesh

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score 4 · Answer 5 · edited Feb 09 '15 at 10:28

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Just go to .m file

remove

#import "calssName.h"

save file

add text again

#import "calssName.h"

save file

edited Feb 09 '15 at 10:28

Navnath Godse

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answered Feb 09 '15 at 10:00

Fadi Abuzant

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Awesome... Best one. – jeet.chanchawat Feb 11 '16 at 10:58

score 3 · Accepted Answer · answered Jun 12 '12 at 12:04

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So, it turns out that I was being a fool. You can't quite do it like this with Xcode. If you create the properties manually in the header file, then synthesise them in the class file, you can then link by doing the following:

Open the xib file Right click on the cell in the "Objects" panel Click and drag from the options here to the objects on the xib.

That's all there was to it.

answered Jun 12 '12 at 12:04

Dale Myers

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I have this issue too. How do I know when can I ctrl-drag the object to create outlet connections? I remember sometimes I can do that when I was developing master detail apps and for some single view apps. – newguy Jun 14 '12 at 01:18
@newguy I think it is ok as long as you aren't using a custom component. – Dale Myers Jun 14 '12 at 06:49
It is strange because I don't have any custom component. I just put some labels on the view controller and I don't even give a name or have a subclass of that view controller, which means the view controller has a default class name "ViewController". – newguy Jun 14 '12 at 07:30
Thanks! Just learned about `ctrl-drag` shortcut for outlet references. – vaughan Sep 29 '13 at 11:39

score 3 · Answer 7 · answered Jul 29 '12 at 14:55

3

The problem could be caused by other errors. Build the program, if there are any errors or warnings, fix it. Then ctrl-drag to insert outlet again and the problem will go away.

answered Jul 29 '12 at 14:55

Philip007

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No... There weren't any errors. And I posted the solution 6 weeks ago? – Dale Myers Jul 30 '12 at 06:59
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I was having the same problem. Just needed a simple build of the program as @Philip007 suggested - and came good again. – So Over It May 02 '13 at 08:27

score 3 · Answer 8 · answered Nov 25 '12 at 22:31

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I had the same problem for a viewcontroller which was removed accidantly.I readded files to project but adding Outlets by draging with from xib file gave me the mentioned error.I cleaned the project and restarted XCode and everything worked fine again.

answered Nov 25 '12 at 22:31

Ilker Baltaci

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score 2 · Answer 9 · edited Jul 17 '14 at 08:15

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Remove .m file from compoile sources and add again.
clean and build your project.
Restart xcode.

In my case, #1 fixed the issue

edited Jul 17 '14 at 08:15

benka

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answered Jul 17 '14 at 07:55

Abdul Rehman

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score 2 · Answer 10 · answered Mar 13 '15 at 08:49

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I had the same issue with Xcode 6.2 In this case it was sufficient to 'touch' the target class - by adding and removing something meaningless - to force a recompile. The issue went away then.

answered Mar 13 '15 at 08:49

m_bernemann

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score 1 · Answer 11 · answered Nov 19 '15 at 14:11

while the remove and add again solutions seemed to work a bit. I luckily had this same situation early on and wanted an easy way to fix it just incase it happened knee deep in programming. It turns out if you just build the the project "Command B" or go to Product and go to build. This worked fine and associated my view with the designated file.

score 1 · Answer 12 · answered Aug 11 '16 at 13:21

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I used xCode 7 and iOS 9.

in your .m

delete #import "VC.h"

save .m and link your outlet again it work fine.

answered Aug 11 '16 at 13:21

Ahmed Abdallah

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score 0 · Answer 13 · answered Dec 31 '14 at 10:01

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I had another window of Xcode opened up for another project and the simulator was also running. I just closed both of them and Product-> Clean my current application. It works.

answered Dec 31 '14 at 10:01

nanospeck

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score 0 · Answer 14 · answered May 15 '15 at 09:27

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For me restarting Xcode did not work, I just deleted the object and added again then started working.

answered May 15 '15 at 09:27

Sanoj Kashyap

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score 0 · Answer 15 · answered Jun 01 '15 at 03:32

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It worked in my case. 1 create new project with different name 2 copy and paste file to it 3 delete file from first project 4 copy and paste file from new project to first project.

answered Jun 01 '15 at 03:32

userInStackoverflow

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score 0 · Answer 16 · answered Sep 08 '15 at 23:35

I tried "Product>Clean" and then "Product>Clean Build Folder" but still had problems. Then I simply deleted the offending .m and .h files associated with the view controller that was giving me problems, created a new .m and .h for the view controller class, reassigned the new view controller class to the storyboard object I was having troubles with, and everything worked.

Fabrizio Bartolomucci · Answer 17 · 2015-09-22T16:52:28.483

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I have the reported problem trying to add a new Watch target to an old project as I successfully did several times on blank projects following tutorials. I tried inserting the target an scheme and removing both the files, the targets and schemes, as well restarting Xcode and deleting the derived files many times. But each time I recreate the target and try to activate the Assistant Editor, it finds no correspondent file to the main storyboard, and if I manually select it and then try to drag a new outlet I get the error of the original poster. What else could it be? As a metter fo fact my error is quite different as you may see in the screenshot.

edited Sep 22 '15 at 16:52

answered Sep 22 '15 at 16:44

Fabrizio Bartolomucci

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Search for duplicated ClassNames or StoryBoardsIDs within your `.storyBoard` editing as XML, I found duplicated names due old bogus references @abhi1992. If you other trick worked for you please share it :) – Jaime Agudo Dec 14 '16 at 23:54

score 0 · Answer 18 · answered Jan 27 '16 at 13:59

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Just restart the XCode. It worked for me.

answered Jan 27 '16 at 13:59

Rohit

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... after more than 2 years? – Tobi Nary Jan 27 '16 at 14:21

score 0 · Answer 19 · answered Mar 08 '16 at 16:25

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Make sure indexing has not been turned off (this was my problem). Here's how to turn it back on from the command line:

defaults write com.apple.dt.Xcode IDEIndexDisable 0

answered Mar 08 '16 at 16:25

Eric Jorgensen

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score 0 · Answer 20 · answered Jun 07 '16 at 07:23

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delete your custom cell(tableview cell) and add again with different name. It works.

answered Jun 07 '16 at 07:23

Narasimha Nallamsetty

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score 0 · Answer 21 · answered Feb 23 '17 at 12:10

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'clean' Project
lets complete indexing(if not completed)
'build' once
check your issue is fixed

answered Feb 23 '17 at 12:10

VikasK

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Could not insert new outlet connection error

21 Answers21

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