text: import React, { Component } from 'react';
  import {
      Button,
      View,
      StyleSheet
    } from 'react-native';
  
  const styles = StyleSheet.create({
      container: {
        flex: 1,
        width: 250,
        alignItems: 'center',
        justifyContent: 'center',
        backgroundColor: '#ffffff'
      },
      button: {
        marginTop: 16
      }
  });
  
  export default class Drawer extends Component {
      render() {
          return (
            <View style={styles.container}>
              <Button title="Test button" style={styles.button}/>
            </View>
          );
      }
  }