Xcode do not suggestion (autocomplete) code

Question

I have swift project in XCode 6. Something happened to my project that make my suggestion (autocomplete) doesn't work.

1. It's problem with my current project. Other projects works good.
2. I've tried to delete Derived Data.
3. Reinstall XCode
4. Deleted .workspace in project
5. Tried "Header path".

I searching answer and nothing of it do not work.

One more: after delete of derived data when Xcode RE-indexing autocomplete is WORK. But when it finished autocomplete do not work again. It's something with workspace?

Answer 1

1. Clear derived data.
2. Under build settings, select Always Search User Paths to "YES".
3. Clean the project.

Answer 2

When troubleshooting this and reading other SO articles, I ended up setting the Defines Module build setting to true. This stopped all autocompletion in my swift files.

The solution for me was to set the Defines Module build setting to false

Hope this helps you!