Answers for "adding refreshControl prop to the parent component of Flatlist which would be Content or Scrollview"

adding refreshControl prop to the parent component of Flatlist which would be Content or Scrollview

import { StyleSheet, RefreshControl } from 'react-native';

 refreshControl={
          <RefreshControl
            refreshing={this.state.isRefreshing}
            onRefresh={() => this.handleRefresh()}
          />
        }