Add API for showing breadcrumbs of fragment back stack.

This adds a simple API to have your back stack automatically
shown as bread crumbs in the action bar.  Introduces some APIs
to retrieve the current back stack.

Also fix a little bug in the "activated" state where it was
being propagated down the hierarchy as "selected". :p  And from
that, fix the standard colors to be reasonable when in the
activated state.

Finally PreferenceActivity is updated to take advantage of
bread crumbs to show your place in the preferences.

Change-Id: I9d633bedf8d7c6e4ed9b25cb9698faa66c7dd9a4

0 files changed, 0 insertions, 0 deletions