Flatlist scroll position onScroll

Question

I am building a header that animates/hides as the user scrolls down a Flatlist. Is there any way to find out the scroll position of the Flatlist in pixels?

I'm using react native 0.59.8. I've tried using onScroll hoping it passes a value to the callback - it doesn't. I've also tried onScrollBeginDrag, onScrollEndDrag and onMomentumScrollEnd.. None of them provide information of the current scroll position.

onSroll={(info)=>{console.log(info)}

I would expect to get some information about the scroll, but none is passed.

Answer 1

Use:

<FlatList onScroll={this.handleScrollView} />

e.g.

handleScrollView: function(event: Object) {
 this.setState({ scrollPosition: event.nativeEvent.contentOffset.y });
}