Further attempts to fix spinner. Narrowed error down to null pointer at setAdapter line either spinner or adapter is null but on debug inspection this doesn't appear to be the case.

Update to design which means services are used instead of standard classes. This also means context can be obtained easily in these classes, however further issues with this solution are still to be resolved, mainly in the stimulus and stimulus strategy areas of the code.

Mid work commit with some sensors possibly implemented and notifications completed. Both are as yet untested.

Initial commit - some designs from pre-Christmas in addition to newly created java files. See logbook 9/1/18