Could not insert new outlet connection

Question

Could not insert new outlet connection: Could not find any information for the class and not showing any class named "ViewController"

Solutions I have done : - Restarted XCode - Restarted System - Deleted the Deriveddata contents from /Library/developer/xcode

But nothing worked for me

Here is the screenshot for the error enter image description here

just refer the following link http://stackoverflow.com/questions/10996023/could-not-insert-new-outlet-connection-error this may help — Sugan S, Mar 08 '13 at 07:36
Sorry trojanfoe and sugan.s, I already went through those link. — Noufal Kmc, Mar 08 '13 at 09:51
I just used "clean" in the "product" menu and it fixed it for me. — narco, Jan 06 '17 at 17:09

score 259 · Answer 1 · edited Feb 10 '16 at 02:42

I got the same problem as you today... I think this is a bug of Xcode, below is the way to fix the issue:

Close the project you are working on with.

Delete your project's【DerivedData】folder. (This folder may inside your project's folder, or inside ~/Library/Developer/Xcode/DerivedData/(your project)/ ) or somewhere else that was setup by you.

restart your project.

After these steps, the problem should be solved. And from my experience, these steps can solve many Xcode problems, so if you got some problem with Xcode again, try these steps first.

Stas · Answer 2 · 2016-01-26T10:30:24.883

134

Removing(removing reference, not deleting) and then adding the appropriate file(the file of class you want to add the outlet to) is actually enough.

Edit 1 I found that after unchecking (in XCode 6.3.1) I had to wait a few seconds for the Indexing to appear and complete in the project name box. Same for the way backwards. This increased chances to fix the issue in almost all (but not all) cases.

Edit 2 Removing reference means that You do not delete the file completely but just remove it from the project (it still exist in the folder of your project, you add it later).

edited Jan 26 '16 at 10:30

answered Apr 12 '13 at 13:17

Stas

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what is appropriate file here? – Noufal Kmc Apr 15 '13 at 04:53
see edited answer, I meant the `.h` and `.m` files of broken class – Stas Apr 15 '13 at 08:03
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Worked well for me, thanks! – blackbox Jun 19 '13 at 21:28
thanks, didn't need to check copy items if needed by the way when adding file back – Adam Johns Mar 13 '15 at 19:44
I had to delete the whole cell and restart Xcode and recreate the files. It looks like this part of Xcode is a bit flakey :) – UKDataGeek May 05 '15 at 08:38
Worked on Xcode 7 beta 3. – Morgan Wilde Jul 16 '15 at 19:41
This actually worked and it's the simplest one. – Wooseong Kim Oct 29 '15 at 03:10
how do you "remove the reference" exactly? – Mariska Jan 24 '16 at 02:36
This is the easy way. Thanks. – gbdcool Aug 01 '16 at 00:33
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Your comment was a life saver! Thank you so much! I kept reading comments all over google and every one said to clean and remove reference but I didn't understand what they meant. From your detailed comment and images I was able to successfully delete the reference of my view controller and add it back. Everything worked! – AdrianGutierrez Mar 30 '17 at 23:17

score 51 · Answer 3 · answered Mar 08 '13 at 07:35

51

That's most often a problem of file indexing.

To fix it try to clean your target and if this doesn't work, go to your Derived Datafolder and delete your application there. This will force xCode to reindex the files

answered Mar 08 '13 at 07:35

Alexander

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Sorry Alexander, I've tried that also, even I've I removed the xcode competely from my mac and reinstall the xcode but still issue is there. I can type the whole line like "@property (strong, nonatomic) IBOutlet UIImageView *myImage;" in .h, then hook the nib component to this line. But drag and drop is not working and auto detection of classes instances in .m file are also not working – Noufal Kmc Mar 08 '13 at 09:55
is your File's Owner Connected to your view Controller? You can look up in the right bar's "Identity Inspector". The custom class should be your custom UIViewController subclass – Alexander Mar 08 '13 at 10:15
Yes. I can run the project. If File's Owner is not connected, the app will crash. – Noufal Kmc Mar 08 '13 at 10:19
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So I'm sorry, I have no other idea how to solve this. In my experience I just had to delete the derived data folder via Organzier > Projects > Delete Derived Data – Alexander Mar 08 '13 at 10:30
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@Alexander +1 It works. thanks. Just need to relaunch the xcode after this. – Prasad Devadiga May 10 '13 at 06:18
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. – nanospeck Dec 31 '14 at 10:03

score 13 · Answer 4 · answered May 25 '13 at 02:23

13

Just got the same issue on Xcode 4.6.2.
Tried solutions presented in different answers/comments, but it still didn't work.

Then all I did was to just:

save all my work;
just quit Xcode & load it again;
then I was able to insert the new outlet connection successfully.

Hope this will save some time/frustration for somebody else.

answered May 25 '13 at 02:23

Marius Butuc

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Simply rebooting worked for me as well, Xcode 5.0.2. – mmvie Jan 08 '14 at 20:52
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This worked for me as well Xcode 8.2 – cjohansson Dec 15 '16 at 13:41

Marie Dm · Answer 5 · 2013-07-24T13:09:10.070

Personally, I had the same problem: "could not insert new outlet connection" AND when I was starting typing something like "UI..." XCode wasn't doing anything. I searched for answers, I tried several things... but it was just an unchecked box. When I was creating a new class, XCode unchecked the box linking the class to the project (I guess).

I can't post a screen shot because I don't have 10 reputations but when you create your class, XCode asks you where you want to save it. Down the finder window, you have 'Targets' and two boxes: 'YouProjectName' and 'YouProjectNameTests'. You should check the first one (at least).

Hope this will help. I saw different discussions about the subject.

screenshot when creating your new class

For *.m file of this class view open "Show File Inspector" and unchecking "Target membership" for this project, then do Clean (menu Product->Clean) and checking again "Target membership" for this project — Kozlov V, Dec 12 '14 at 21:29

score 7 · Answer 6 · answered Aug 02 '13 at 06:58

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I recently came across this problem. I soon realized that the cause had been my own doing. I had previously disabled XCode indexing (which used to take forever & eat up my RAM), using the below code in a terminal window:

defaults write com.apple.dt.XCode IDEIndexDisable 1

To revert XCode to its default state, i used the following line in a terminal window:

defaults write com.apple.dt.XCode IDEIndexDisable 0

Voila! All's well again..

answered Aug 02 '13 at 06:58

A_B

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You are a genius! I spent hours trying all the other solutions and this is the only one that worked for me. – jeffslofish Nov 21 '15 at 05:47
finally a solution, had this issue on and on with xcode7 – kmarin Dec 28 '15 at 19:25
it's working for me. Xcode 9 – Carlos Bolivar Oct 07 '17 at 22:54

score 4 · Answer 7 · answered Jul 22 '13 at 11:59

4

If you've imported the Class into your Xcode Project you have to manually add the Class (.m file) to your 'Compile Sources'.

Select project icon > TARGETS > Build Phases > Compile Sources Click the + button and add your *.m file.

answered Jul 22 '13 at 11:59

David Douglas

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It can't recognize my .m or .h class inside a folder. It just detect the default classes. Do you have any other solution?. :´ – napstercake Jul 30 '13 at 17:02

score 3 · Answer 8 · answered Mar 08 '13 at 13:28

3

Finally I did it by removing the xcode completely from my mac and reinstall the xocde.dmg file and then install MobileDevice.pkg and MobileDeviceDevelopment.pkg residing on /Applications/Xcode.app/Contents/Resources/Packages

answered Mar 08 '13 at 13:28

Noufal Kmc

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should have burned the house too – RealNmae Mar 15 '16 at 14:26
are you sure this the right solution :( – Amr Angry Aug 19 '16 at 13:25

score 0 · Answer 9 · answered Jun 29 '13 at 07:31

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make sure that your source have had been included in the "Build Phases" place.

This do fix my problem. But I think Xcode is still really buggy and annoying.

answered Jun 29 '13 at 07:31

user1082792

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Could not insert new outlet connection

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