How the wordpress login and signup in react native app

Can anyone help me to login and sign up in reactnative app
i have a Wordpress website and i want to link my wordpress site to reactnative app.
search lots of solution but no one help me. i am using jwt auth plugin but don't know how to integrate this in reactapp.?

import {
  SafeAreaView,
  StyleSheet,
  ScrollView,
  View,
  Alert,
  Text,
  StatusBar,
  Image,
  TextInput,
  TouchableOpacity,
  ImageBackground,
  ActivityIndicator,
  FlatList,
  Button,
  Linking
} from 'react-native'; 
import AsyncStorage from '@react-native-community/async-storage';
import { createAppContainer } from 'react-navigation';
import { createStackNavigator} from 'react-navigation-stack';
import { YellowBox } from 'react-native';
YellowBox.ignoreWarnings(['Remote debugger']);

const userInfo = {username:'demo',password:'demo'};
class HomeScreen extends React.Component {
    static navigationOptions = {
        header: null
    };
    constructor( props ) {
        super( props );
        this.state = {
            username:'',
            password:''
        }
    }
    _onPressButton() {
        Alert.alert('Login','Social login');
      }
    _signin = async()= {
        await AsyncStorage.setItem('logged', '1');
        if( userInfo.username===this.state.username  userInfo.password===this.state.password) {
            this.props.navigation.navigate('Dashboard');
        }
        else {
            alert('Username / Password Incorrect');
        }
    }
    _retrieveData = async () = {
        const logged = await AsyncStorage.getItem('logged'); 
        this.props.navigation.navigate( logged !== '1' ? 'Auth' : 'App' );
    }
  render() {
  const {navigate} = this.props.navigation;
  return (
    
     StatusBar backgroundColor="#22a86d" barStyle="light-content" / 
    ImageBackground source={require('./images/login_background.png')} style={styles.MainContainer}
      View style={styles.body}
         Image
          style={{width:230, height: 80,marginBottom:30,resizeMode: 'contain'}}
          source={require('./images/logo.png')}
        /

       TextInput
        style={styles.input}
        placeholder="User Name"
        placeholderTextColor="#fff"
        value={this.state.username}
        onChangeText={(username)=this.setState({username})}
      /
      TextInput
        style={styles.input}
        placeholder="Password"
        placeholderTextColor="#fff"
        value={this.state.password}
        onChangeText={(password)=this.setState({password})}
        secureTextEntry={true}
      /

      Text style={styles.forgot}Forgot Password?/Text


       TouchableOpacity style={styles.userBtn} activeOpacity={0.9} 
        onPress={this._signin}
        Text style={styles.btnTxt}Login/Text
      /TouchableOpacity

      Text style={styles.account}Don't have an account? 
        Text style={styles.bold} onPress={() = navigate('Profile')} Create Account/Text
      /Text

      Text style={styles.signUp}Signup with/Text

      View style={{flexDirection: 'row',marginTop:20}}
        TouchableOpacity activeOpacity={0.9} 
         onPress={this._onPressButton}
        Image
          style={{width:70, height: 60, resizeMode: 'contain'}}
          source={require('./images/fb.png')}
        /
        /TouchableOpacity
        TouchableOpacity activeOpacity={0.9} 
         onPress={this._onPressButton}
        Image
          style={{width:70, height: 60,resizeMode: 'contain'}}
          source={require('./images/twitter.png')}
        /
        /TouchableOpacity
        TouchableOpacity activeOpacity={0.9} 
         onPress={this._onPressButton}
        Image
          style={{width:70, height: 60,resizeMode: 'contain'}}
          source={require('./images/google.png')}
        /
        /TouchableOpacity
        /View
        /View
   /ImageBackground
    /
  );
};
}
const MainNavigator = createStackNavigator({
  Home: {screen: HomeScreen},
  Profile: {screen: ProfileScreen},
  Dashboard: {screen: DashboardScreen},
  CampaignList: {screen: CampaignScreen},
  DonorList: {screen:DonorScreen},
});

const App = createAppContainer(MainNavigator);

export default App;