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Level 1

7 points

iPhone 101 guide error

Hello,

I'm following the "Your First iOS Application" (a.k.a. iPhone 101) and under Chapter 5 on page 40 (of the PDF) where it instructs me to create an action for the button in the nib file named "changeGreeting", I'm getting the following error:

Could not insert new action connection: No @implementation found for the class "MyViewController"

I'm not a programming noob, but I'm new to iOS/Mac programming (I've been developing Windows applications for almost 11 years). I followed the guide very carefully up to this point and everything was working until this.

I'm using the latest version of Xcode (4.02).

It seems to be complaining that it isn't aware of MyViewController, but I don't understand why. Any help would be most appreciated. Thanks.

Posted on May 12, 2011 9:32 PM

25 replies

admiralc

Level 1

0 points

Aug 11, 2011 12:19 PM in response to krytaxion2

This worked for me too

Aug 12, 2011 4:08 PM in response to frenchef

Quitting XCode solved it for me too.

In fact when I quit, XCode had a crash bug and did not exit cleanly.

It restarted with all my code intact and I was able to drag and create the new Action as advertised.

Message was edited by: BlackPointCoder

Aug 20, 2011 9:21 PM in response to QuadraQuack

Restarting Xcode worked for me as well thankfully.

Odd though, imagine this happened while coding a project of your own where you don't have instructions that tell you what should happen next. I wouldn't immediately be blaming the software, I'd just assume I'd missed something when really it was the compiler's fault.

A good lesson that I'll be keeping in mind for future projects.

Oct 11, 2011 11:19 PM in response to QuadraQuack

just experienced this problem in Xcode 4.1. restarted and the problem is gone and I was able to CTRL-click drag and Xcode created the code in my .h file:

{code}- (IBAction)viewButton1:(id)sender;{code}

jb1098

Level 1

0 points

Jan 2, 2012 1:18 PM in response to QuadraQuack

I just got this problem after creating a new file with the same name as a previously deleted file. Fixed it by changing the header and implementation files (just by adding a space at the end of a line), and then saving them.

Hagin

Level 1

0 points

Jan 23, 2012 4:15 AM in response to QuadraQuack

I had the same problem and just solved it that way:

for some reason the mainController file, that caused the problem had a localization (in the right menu) - in the english folder.

I just deleted it by pressing the minus sign and it worked.

just make sure you have a copy of the file in the main folder (that holds the english folder too).

Mar 31, 2012 9:53 PM in response to QuadraQuack

Hi,

Just select 'File's owner" and in "Identity inspector" set the right Controller class instead of NSObject.

Bidli

Level 1

10 points

Apr 22, 2012 4:21 PM in response to QuadraQuack

Reindexing the project was the only thing that helped in my case. Here's how to do it: http://xcodebook.com/2011/04/code-nonsense/

Apr 30, 2012 8:39 AM in response to Bidli

Command + S saved me

May 5, 2012 10:22 AM in response to Bidli

Re-indexing the project (as Bidli) references was the only thing that worked for me.

iPhone 101 guide error