How can I resolve this warning?
[WARN]warning: no rule to process file \'$(PROJECT_DIR)/MyApp/MessageCell.h\' of type sourcecode.objj.h for archit
My problem was't header files because under Target > Build Phases > Compile Resources there weren't any .h files to begin with. The system was complaining about some other files. I followed this link which basically said delete the files the system was complaining about but instead I cntrl + dragged them to Copy Bundle Resources.
The easiest way to search for the files is to use the Filter in the upper right hand corner:
Here are the directions from the link: