Final implementation of simple Search Bar for React Native

SearchBarFinish.js

import React from 'react'
import {
  View,
  ListView,
  Text,
  StyleSheet,
  TextInput,
} from 'react-native'
import names from './names'

const styles = StyleSheet.create({
  container: {
    flex: 1,
  },
  navbar: {
    padding: 5,
    height: 50,
    justifyContent: 'flex-end',
    alignItems: 'center',
    backgroundColor: 'rgb(222, 222, 222)',
  },
  navbarText: {
    fontWeight: 'bold',
    fontSize: 20,
  },
  list: {
  },
  row: {
    padding: 10,
    height: 50,
    borderBottomColor: 'gray',
    borderBottomWidth: StyleSheet.hairlineWidth,
  },
  searchBar: {
    backgroundColor: 'rgb(126, 126, 126)',
  },
  searchInput: {
    height: 30,
    margin: 5,
    paddingLeft: 10,
    backgroundColor: 'white',
    borderRadius: 5,
  },
})

class SearchBar extends React.Component {
  state = {
    dataSource: new ListView.DataSource({
      rowHasChanged: (r1, r2) => r1 !== r2,
    }),
    searchText: null,
  }
  getFilteredData() {
    const { dataSource, searchText } = this.state
    if (searchText === null || searchText.length === 0) {
      return dataSource.cloneWithRows(names)
    }
    const matches = names.filter(name => name.search(searchText) >= 0)
    return dataSource.cloneWithRows(matches)
  }
  render() {
    const renderRow = row => (
      <View style={styles.row}>
        <Text>{row}</Text>
      </View>
    )
    return (
      <View style={styles.container}>
        <View style={styles.navbar}>
          <Text style={styles.navbarText}>Top Passwords</Text>
        </View>
        <View style={styles.searchBar}>
          <TextInput
            style={styles.searchInput}
            value={this.state.searchText}
            autoCapitalize="none"
            onChangeText={searchText => this.setState({ searchText })}
            placeholder="Search"
          />
        </View>
        <ListView
          style={styles.list}
          dataSource={this.getFilteredData()}
          renderRow={renderRow}
        />
      </View>
    )
  }
}
export default SearchBar