flatlist react native horizontal

<FlatList
    data={this.state.newsFeed}
    refreshing={this.state.refreshing}
    horizontal={this.state.isHorizontal}
    ref={ref => { this.newsFeedListRef = ref; }}
    renderItem={this.renderNewsFeedRow.bind(this)}
    keyExtractor={(item, index) => `feed_${index}`}
    onRefresh={this.__handleNewsFeedOnRefresh.bind(this)}
    //renderScrollComponent={this.renderScrollComponent.bind(this)}
    ListHeaderComponent={this.renderListHeaderComponent.bind(this)}
    getItemLayout={(data, index) => ({ index, length: ITEM_HEIGHT, offset: (ITEM_HEIGHT * index) })} />