i got an email which solved the first "R cannot be resolved to a
variable" from Chuck Krutsinger, who has been very patient with this
newbie:

The import you refer to is not technically a bug.  The compiler is
looking for a file named R, which it will find in the "gen" directory
if your IDE has generated it.  So, follow these steps:

1) On the Project menu, make sure Build Automatically is NOT checked.
2) Clean the project in question, making sure that the build checkbox
is NOT checked.
3) Remove the import for R.java
4) On the Project menu, select Build Automatically.

At this point, you should not need the import because the file R.java
should have been generated and placed in the "gen" directory.  If at
this point you do a Ctrl-Shift-O it should not put that import back.
If you leave the Build Automatically selected, you should not see this
problem at all any more.

doing the "clean" command while "build automatically" was Not checked
seems to have fixed the first error, although i still have 2 more,
thank you Chuck.

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