App.js

/**
 * Sample React Native App
 * https://github.com/facebook/react-native
 * @flow
 */

'use strict';

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

const instructions = Platform.select({
  ios: 'Press Cmd+R to reload,\n' +
    'Cmd+D or shake for dev menu',
  android: 'Double tap R on your keyboard to reload,\n' +
    'Shake or press menu button for dev menu',
});

export default class App extends Component<{}> {
  _startAndShowBuglife = () => {
    var Buglife = NativeModules.Buglife;
    Buglife.presentReporter();

  };
  render() {
    var Buglife = NativeModules.Buglife;
    Buglife.setUserIdentifier("foo@bar.com");
    Buglife.setInvocationOptions(2);
    Buglife.addAttachmentWithContents("technicallyThisIsBase64Data", "data.dat");

    return (
      <View style={styles.container}>
        <Text style={styles.welcome}>
          Welcome to React Native!
        </Text>
        <Text style={styles.instructions}>
          To get started, edit App.js
        </Text>
        <Text style={styles.instructions}>
          {instructions}
        </Text>
        <Button 
          onPress={this._startAndShowBuglife}
          color='#48BBEC'
          title='Report a bug'
        />
      </View>
    );
  }
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    justifyContent: 'center',
    alignItems: 'center',
    backgroundColor: '#F5FCFF',
  },
  welcome: {
    fontSize: 20,
    textAlign: 'center',
    margin: 10,
  },
  instructions: {
    textAlign: 'center',
    color: '#333333',
    marginBottom: 5,
  },
});