homescreen with spinner

homescreen.js

import React, { Component } from 'react';
import PropTypes from 'prop-types';
import { connect } from 'react-redux';
import { StyleSheet, View, FlatList } from 'react-native';
import Icon from 'react-native-vector-icons/FontAwesome';
import { List, ListItem, SearchBar } from 'react-native-elements';
import { Container, Content, Text, Button, Label } from 'native-base';
import Spinner from 'react-native-loading-spinner-overlay';

import { requestAttachedFacilities } from '../actions/pickFacility';

class PickFacility extends Component {
  static navigationOptions = {
    drawerLabel: 'Pick a Facility',
    title: 'Pick a Facility',
    drawerIcon: () => <Icon name="ios-home" />,
  };
  static propTypes = {
    navigation: PropTypes.object,
    dispatch: PropTypes.func,
    PickFacility: PropTypes.object,
  };

  constructor(props) {
    super(props);
    this.state = {
      data: [],
      noData: false,
    };
  }
  componentDidMount() {
    console.log('Component did mount');
    this.props.dispatch(requestAttachedFacilities());
  }

  haandleLoadMore = () => {
    console.log('end of page');
  };
  fliterList = (e) => {
    const text = e.toLowerCase();
    const trucks = this.state.data;

    const filteredName = trucks.filter(item => item.name.toLowerCase().match(text));

    if (!text || text === '') {
      this.setState({
        data: this.props.PickFacility.attachedFacilities,
      });
    } else if (!Array.isArray(filteredName) && !filteredName.length) {
      // set no data flag to true so as to render flatlist conditionally
      this.setState({
        noData: true,
      });
    } else if (Array.isArray(filteredName)) {
      this.setState({
        noData: true,
        data: filteredName,
      });
    }
  };
  handleRetry = () => {
    this.props.dispatch(requestAttachedFacilities());
  };

  listItemClick = (e) => {
    console.log(e);
  };

  spinnerView = () => (
    <Spinner visible textContent="Loading" textStyle={{ color: '#FFF' }} />
  );

  listView = () => (
    <List containerStyle={{ borderTopWidth: 0, borderBottomWidth: 0 }}>
      <FlatList
        bounces={false}
        data={this.state.noData ? this.state.data : this.props.PickFacility.attachedFacilities}
        ItemSeparatorComponent={this.renderSeparator}
        ListHeaderComponent={this.renderHeader}
        refreshing={false}
        renderItem={({ item }) => (
          <ListItem
            onPress={this.listItemClick}
            title={`${item.name}`}
            containerStyle={{ borderBottomWidth: 0 }}
            titleStyle={{ fontSize: 12, fontWeight: 'bold' }}
          />
        )}
        keyExtractor={item => item.id}
        onEndReached={this.haandleLoadMore}
        onEndReachedThreshold={0}
        onPress
      />
    </List>
  );

  networkErrorView = () => (
    <View
      style={{
        flex: 1,
        alignSelf: 'center',

        marginTop: '50%',
      }}
    >
      <Icon name="exclamation-triangle" color="#C0C0C0" size={30} style={styles.iconStyle} />
      <Label style={styles.securetext}>Network Connectivity Error</Label>
      <Button style={styles.button} onPress={this.handleRetry}>
        <Label style={styles.buttonLabel}>RETRY</Label>
      </Button>
    </View>
  );

  renderHeader = () => (
    <SearchBar
      placeholder="Search Facility"
      lightTheme
      onChangeText={this.fliterList}
      inputStyle={{ fontSize: 15 }}
    />
  );

  renderSeparator = () => (
    <View
      style={{
        height: 1,
        width: '100%',
        backgroundColor: '#CED0CE',
      }}
    />
  );
  render() {
    console.log(this.props.PickFacility.isLoading);
    if (this.props.PickFacility.attachedFacilities.length > 0) {
      return (
        <Container style={styles.container}>
          <Content>
            {this.props.PickFacility.isLoading ? this.spinnerView() : this.listView()}
          </Content>
        </Container>
      );
    } else if (this.props.PickFacility.msg) {
      return (
        <Container style={styles.container}>
          <Content>
            {this.spinnerView()}
            {this.networkErrorView()}
          </Content>
        </Container>
      );
    }
    return null;
  }
}

const styles = StyleSheet.create({
  container: {
    // backgroundColor: 'yellow',
  },
  boxContainer: {
    flex: 1, // 1:3
    alignItems: 'center',
    justifyContent: 'center',
    alignSelf: 'stretch',
  },
  boxZero: {
    flex: 1, // 3:6
    // backgroundColor: '#EF4F43',
    marginTop: '20%',
  },
  boxOne: {
    flex: 2, // 3:6,
    // backgroundColor: '#888888',
  },
  boxTwo: {
    flex: 1, // 1:6
    // backgroundColor: '#F17F42',
  },
  boxThree: {
    flex: 1, // 2:6
    alignItems: 'center',
    // backgroundColor: '#CE6D39',
    marginBottom: '10%',
  },
  header: {
    backgroundColor: '#769654',
  },
  button: {
    alignSelf: 'center',
    margin: '5%',
    padding: '10%',
    backgroundColor: '#769654',
  },
  text: {
    alignSelf: 'center',
  },
  securetext: {
    alignSelf: 'center',
    fontSize: 20,
    color: '#C0C0C0',
  },
  copyrightText: {
    alignSelf: 'center',
    fontSize: 10,
  },
  buttonLabel: {
    color: '#FFF',
  },
  versionrelease: {
    fontSize: 10,
    alignSelf: 'center',
  },
  iconStyle: {
    alignSelf: 'center',
  },
  ListItemStyle: {
    fontSize: 10,
  },
});
const mapStateToProps = state => ({ PickFacility: state.pickFacility });
export default connect(mapStateToProps)(PickFacility);