GuidedStepFragment transition and new features
This is a re-iterate of use cases of GuidedStepFragment, new
features including allowing app to add GuidedStepFragment
on top of other content with a covering background fragment;
using activity return transition to slide out content.
Switched from fragment animation to fragment transition. Using
transition will allow us to clone a support version of
GuidedStepFragment that is impossible under fragment animation.
Clearly defined three use cases:
1. When GuidedStepFragment is launched in empty activity.
2. When GuidedStepFragment is launched on top of other content.
3. When GuidedStepFragment is replacing exisitng GuidedStepFragment.
For case 2, we need background to cover bottom content.
Three cases has different transitions settings. Case 1 does not
need Fragment enter transition because that's handled by activity
transition.
Bug 21504593
Bug 23976865
Change-Id: Id7a49d8706fb4b6d21f5f93db5ba9b21238b2c5e
23 files changed