<ScrollView ref={ref => (this.scrollViewRef = ref)}>
<FlatList
data={data}
CellRendererComponent={({item, index}) => (
<View style={{backgroundColor: 'red', marginBottom: 10}} onLayout={event => console.log(item, event.nativeEvent.layout.y)} ref={ref => (this.parentView = ref)}>
{
item.map(innerItem => (
<Text onLayout={event => console.log(innerItem, event.nativeEvent.layout.y)} style={{backgroundColor: 'blue', height: 150, marginBottom: 10}}>
{innerItem}
</Text>
))}
</View>
)}
/>
</ScrollView>