Summary:
Adds support for `Animated.Value#addListener` for native driven nodes on Android. This is based on work by skevy in the exponent RN fork. Also adds a UIExplorer example.
** Test plan **
Run unit tests
Tested that by adding a listener to a native driven animated node and checked that the listener callback is called properly.
Also tested that it doesn't crash on iOS that doesn't support this yet.
Closes https://github.com/facebook/react-native/pull/8844
Differential Revision: D3670906
fbshipit-source-id: 15700ed7b93db140d907ce80af4dae6be3102135
Summary:This change adds some basic unit tests for native animated traversal algorithm. The following tests are added:
1) Build simple animated nodes graph, verify that frame-based animation execute updates and when it runs out of the frames we no longer schedule updates for the native view
2) Build simple animated nodes graph and start short timing animation, verify that animation JS callback gets called.
As a part of this change I'm fixing an issue that tests allowed me to discover, where I forgot to clear updates queue at the end of `runUpdates` method. It was causing the view to be updated even if there was no active animation for it (actually it was mitigated by another bug in `hasActiveAnimations` I'm fixing here too).
I'm also adding Nullable annotation in a bunch of places. To lazy to send it as a separate change - sorry.
Going forward I'm planning on adding more tests. Currently the number of nodes is pretty limited so it's difficult to construct more complex graphs, but once I land Add/Multiply
Closes https://github.com/facebook/react-native/pull/6858
Differential Revision: D3168549
Pulled By: astreet
fb-gh-sync-id: 5295c75f3c7817775b5154bb808888650ff74e12
fbshipit-source-id: 5295c75f3c7817775b5154bb808888650ff74e12
Aaron Chiu
Janic Duplessis
Krzysztof Magiera