StatefulModal.js

import React from "react";
import { View, Text, Modal, TouchableOpacity } from "react-native";

export default class ViewUsingModal extends React.Component {
  state = { isModalVisible: false };

  toggleModal = () =>
    this.setState({ isModalVisible: !this.state.isModalVisible });

  render() {
    return (
      <View>
        <TouchableOpacity onPress={this.toggleModal}>
          <Text>Tap me!</Text>
        </TouchableOpacity>
        <Modal visible={this.state.isModalVisible}>
          <View>
            <Text>I am alive!</Text>
          </View>
        </Modal>
      </View>
    );
  }
}