Could not insert new action connection Error

Question

I get this error, when try to create new action for UIButton by dragging blue arrow from UIButton to my header file (you know, this new feature of XCode 4...)

When I create action in code by myself and connect it in old way, simply by dragging from button to File's Owner, it's works well

Here's screenshot:

Answer 1

Make sure your .m file exists in the project and on disk. Make sure it is correct with an @implementaiton-@end block. Open it in Xcode, close it, if the error persist, restart Xcode.

Xcode is trying to write to EditPUViewController.m (in the dealloc method etc.) but could not find it.

Also, it always helps to hard-clean the project with ⌘+⌥+⇧+K.

Answer 2

Try this:

Open Organizer then Project Tab.

Clear the "Derived Data". Xcode should re-index your project then and code sense should work. At least worked for me.

Answer 3

I had a comparable problem when trying to connect an action. To solve it I manually added the IBAction and then XCode allowed me to connect from the button to the code.