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Support API "scrollTo" in RecyclerViewBackedScrollView on Android

In Android `RecyclerViewBackedScrollView` didn't provide the `scrollTo` API, however iOS does.
If a ListView was created with `RecyclerViewBackedScrollView` as its `renderScrollComponent`, then calling `scrollTo` wouldn't work.

This diff enables the `scrollTo` API in `RecyclerViewBackedScrollView` on Android.

Reviewed By: dmmiller

Differential Revision: D3605233

fbshipit-source-id: f192053361f45453e5fce3fb6038ab03ac4025af
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Siqi Liu Facebook Github Bot 8
Siqi Liu authored and Facebook Github Bot 8 committed Jul 22, 2016
1 parent a07026d commit 235c059605c63f623b7f371db71d4182a63a828c
Showing with 24 additions and 0 deletions.
  1. +24 −0 Libraries/Components/ScrollView/
@@ -75,6 +75,30 @@ var RecyclerViewBackedScrollView = React.createClass({
this.props.onContentSizeChange(width, height);

* A helper function to scroll to a specific point in the scrollview.
* This is currently used to help focus on child textviews, but can also
* be used to quickly scroll to any element we want to focus. Syntax:
* scrollResponderScrollTo(options: {x: number = 0; y: number = 0; animated: boolean = true})
* Note: The weird argument signature is due to the fact that, for historical reasons,
* the function also accepts separate arguments as as alternative to the options object.
* This is deprecated due to ambiguity (y before x), and SHOULD NOT BE USED.
scrollTo: function(
y?: number | { x?: number, y?: number, animated?: boolean },
x?: number,
animated?: boolean
) {
if (typeof y === 'number') {
console.warn('`scrollTo(y, x, animated)` is deprecated. Use `scrollTo({x: 5, y: 5, animated: true})` instead.');
} else {
({x, y, animated} = y || {});
this.getScrollResponder().scrollResponderScrollTo({x: x || 0, y: y || 0, animated: animated !== false});

render: function() {
var recyclerProps = {

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