Home.js

import React from "react";
import { View, Text, StyleSheet, Button } from "react-native";
import { Auth } from "aws-amplify";
import { withAuthContext } from "../context";

class Home extends React.Component {
  handleLogout = async () => {
    await Auth.signOut();
    this.props.auth.setAuthenticated(false);
  };

  render() {
    return (
      <View style={styles.container}>
        <Button title="Logout" onPress={this.handleLogout} />
      </View>
    );
  }
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    alignItems: "center",
    justifyContent: "center"
  }
});

export default withAuthContext(Home);