[SOLVED] _this._drawer.open is not a function react-native

_this._drawer.open is not a function react-native

i am using drawer from native base for my react native application. when u click the menu button the drawer not open up and i get this error ( _this._drawer.open ) is not a fucntion what is the isse here is my code

import React, { Component } from 'react';
import {
AppRegistry,View
} from 'react-native';
import {ScrollableTab,TabHeading, Drawer, Container,Content, Header, 
Title, Button, Left, Right, Body, Icon ,Text,Tab, Tabs } from 'native-base';
import SecondStatus from './component/StatusComponent';
import HeaderComponent from './component/headerComponent';
import Sports from './component/Sports';
import MainPage from './component/MainPage';
import SideBar from './component/SideBar';

export default class Point extends Component {
    closeDrawer = () => {
    this.drawer.close()
   };
   openDrawer = () => {
    alert('asasa click');
    console.log('asad--');
    this._drawer.open();
    };
   render() {

   return (
          <Container>
           <Drawer
          ref={(ref) => { this._drawer = ref; }}
          content={<SideBar  />}
          onClose={() => this.closeDrawer()} >

            <Header  >
              <Left>
                <Button transparent onPress={this.openDrawer}>
                    <Icon name='arrow-back' />
                </Button>
            </Left>
            <Body>
                <Title>UrduPoint</Title>
            </Body>
            <Right>
                <Button transparent onPress=
         {this.openDrawer.bind(this)}>
                        <Icon name='menu' />
                    </Button>
            </Right>
            </Header>

         </Drawer>




        </Container>
     );
  }
 }

AppRegistry.registerComponent('Point', () => Point);

here is my SideBar.js

  import React, { Component } from 'react';
  import {
 Text,
View,
 StyleSheet
} from 'react-native';

export default class SideBar extends Component{
render(){
    return(
 <View>
   <Text>
     asad
     </Text>
   </View>

    )
   };

 }

ps. this drawer is same as in npm 'react-native-drawer'

Solution

I have used react-native-drawer this npm thats work for me