Summary:
There are use cases of needing to setValue multiple times per second (for example, using PanResponder to update a slider component).
This requires the use of the native driver for perf reasons as using the JS driver will cause a rerender. Currently, the only way to make an animated node native is via setting useNativeDriver: true on an animation config. For example:
```
Animated.timing(animatedValue,
{
toValue: newValue,
duration: 0,
useNativeDriver: true
}).start();
```
To avoid needing to call the above, add a useNativeDriver param to the constructor. When set to true, the node will be made native immediately.
```
const animatedValue = new Animated.Value(0, useNativeDriver);
...
animatedValue.setValue(newValue);
```
Note that, like with useNativeDriver in the animation config, once a node is made native, it cannot be reverted to JS-only.
---
As an aside, PanResponder uses JS-side events, and thus we cannot use Animated.event with native driver; we instead need to setValue on a native AnimatedValue. A much more thorough explanation is in D34564598.
---
Changelog:
[General][Added] - [Animated] Add useNativeDriver as a param for setValue
Reviewed By: JoshuaGross
Differential Revision: D36459457
fbshipit-source-id: 284148a6d16537429efeab8b07184019990909cd
Genki Kondo
73191edb72