How to get currently visible index in RN flat list

Question

I have a horizontal flat list where each item is width:300 All I am trying to do is to get index of currently visible item.

Answer 1

UPD. thanks to @ch271828n for pointing that onViewableItemsChanged shouldn`t be updated

You can use FlatList onViewableItemsChanged prop to get what you want.

class Test extends React.Component {
  onViewableItemsChanged = ({ viewableItems, changed }) => {
    console.log("Visible items are", viewableItems);
    console.log("Changed in this iteration", changed);
  }

  render () => {
    return (
      
    )
  }
}

viewabilityConfig can help you to make whatever you want with viewability settings. In code example 50 means that item is considered visible if it is visible for more than 50 percents.

Config stucture can be found here