preview pdf react native app

index.js

import React, { Component } from 'react';
import { View, StyleSheet, WebView } from 'react-native';
import { Constants } from 'expo';

export default class App extends Component {
  render() {
    return (
      <View style={styles.container}>
        <WebView
          bounces={false}
          scrollEnabled={false} 
          source={{ uri: 'http://www.africau.edu/images/default/sample.pdf' }} />
      </View>
    );
  }
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    paddingTop: Constants.statusBarHeight,
  },
});