Android toggle buttons are inconsistent.  The XML attribute you define for a toggle event is called "onClick", but the event listener should hook into onCheckedChanged().

This should correct the odd swipe vs click events in #980.
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Fix for #982 - null pointer on setting start/stop menu item
Merge pull request #986 from crankycoder/features/980-togglebuttons

980 - fix the listener for the on/off switch
Merge pull request #995 from crankycoder/features/982-set-startstopmenuitem

Fix for #982 - null pointer on setting start/stop menu item
Fix for #981 when the android framework returns NULL for getActivity()
Merge pull request #990 from cascheberg/metrics-drawer-cleanup

@cascheberg Metrics drawer: fix RTL layout, and spacing on observations count
return immediately if the activity is null
Merge pull request #994 from crankycoder/features/981-getactivity-npe

Fix for #981 when the android framework returns NULL for getActivity()