tree 34a511dbc6c5551d340d73e589ca9ee6defd9b7a
parent 511758a333993e365f606af8c064ac78a41af68e
author Doris Liu <tianliu@google.com> 1436574761 -0700
committer Doris Liu <tianliu@google.com> 1438294173 -0700

Refactor AnimatorSet in prep for adding more functionalities

This refactor changes how relationships (i.e. with/after/before)
among Animators in an AnimatorSet are represented. Specifically,
a directed graph is used: parent-child indicates sequential
relationship, and siblings will fire simultaneously.

This CL also fixed the issue where start delays for Animators that
play together are not handled correctly.

Bug: 11649073
Bug: 18069038
Change-Id: I5dad4889fbe81440e66bf98601e8a247d3aedb2e