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Sharon Zheng
77e79d6308
Summary:
There was a bug on Android when an Animated.ScrollView had a RefreshControl while an Animated style was applied, ie `transform`:
```
<Animated.ScrollView
refreshControl={<RefreshControl />}
style={{
transform: [{
translateY: new Animated.Value(200, {useNativeDriver: true})
}]
}}
/>
```
The transform value was being incorrectly applied twice. Since the styles were applied once on RefreshControl and once on NativeScrollView, the transform style is effectively applied twice:
**1. ScrollView.js**
- RefreshControl gets the transform through Fabric commit
- [The RefreshControl gets wrapped around ScrollView](https://fburl.com/code/k60krxbj) while on iOS there is no change in the parent/child relationship. [Outer/inner styles are split and applied to RefreshControl/ScrollView](https://fburl.com/code/b2to75er), and transform styles are applied on the parent (RefreshControl)
**2. createAnimatedComponent.js**
- NativeScrollView gets the transform through Animated
- [ScrollView forwards its ref to NativeScrollView](https://fburl.com/code/w1whtl5f), which means AnimatedComponent is setting the transform styles on NativeScrollView and not RefreshControl as ScrollView.js did
This diff fixes this bug by using the `useAnimatedProps` hook which makes both RefreshControl and ScrollView components into animated components. Otherwise, the components don't know what to do with Animated values.
---
Changelog:
[Internal][Fixed] - Animated transform style properties were being applied twice when used on an Animated.ScrollView with RefreshControl on Android
Reviewed By: javache
Differential Revision: D38815633
fbshipit-source-id: 2b76639d2237176b6aae4fb1e22cf1a1ec70a69a