Adding resource files to xcode
It might be that the file you added was not added to the project build. Click your project
> App target
> Build Phases
And check that the file exists in Compile sources
(if it needs to be compiled), otherwise check Copy bundle resources
. If the file does not exist there, drag it there and it should be fine, (from what I understand of your question).
EDIT
You can also check wether a file is added to the target by clicking the file and opening the "File Inspector" (View
> Utilities
> Show File Inspector
, or ⌥ + ⌘ + 1), and check the Target Membership
section.
Example:
Adding to Copy bundle resources
worked for me