tree 19c16f116b0c79e7b3142c1ff9075c19f8e60d36
parent 4da63b534eecadab856bf4e39d74aa208798dca1
author Khalid Zubair <kzubair@cyngn.com> 1466804255 -0700
committer Scott Mertz <scott@cyngn.com> 1466813330 -0700

Fix exponential content observer registration

On each call to ContentObserver.onChange(), updateUi() re-registers a
ContentObserver. On the first onChange, a second observer is
registered and for the next change, both observers call updateUi()
registering two more, and so on. After n onChanges there are 2^n
observers.

Remove the duplicate registrations and register a ContentObserver only
if the station changes.

FEIJ-1373

Change-Id: I07d0bd968165dfda5601f72fd20641bb9d62a5f1