App.js

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

export default class App extends React.Component {
  render() {
    return (
      <View style={styles.container}>
      </View>
    );
  }
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    backgroundColor: '#fff',
    alignItems: 'center',
    justifyContent: 'center',
  },
});
*/
import React, { Component } from 'react';
import { Provider } from 'react-redux';

import { Font, AppLoading } from 'expo';
import store from './app/redux/store'; //Import the store
import Main from './app/config/routes'; //Import the app/index.js file


function cacheFonts(fonts) {
  return fonts.map(font => Font.loadAsync(font));
}


export default class App extends Component {
      constructor() {
        super();
        this.state = {
            isReady: false,
        }
    }
      async _loadAssetsAsync() {
        const fontAssets = cacheFonts([
            {RobotoExtraBold: require('./app/assets/fonts/Roboto-Black.ttf')},
            {RobotoBold: require('./app/assets/fonts/Roboto-Bold.ttf')},
            {RobotoMedium: require('./app/assets/fonts/Roboto-Medium.ttf')},
            {RobotoRegular: require('./app/assets/fonts/Roboto-Regular.ttf')},
            {RobotoLight: require('./app/assets/fonts/Roboto-Light.ttf')}
        ]);

        await Promise.all([...fontAssets]);
    }

    render() {
      if (!this.state.isReady) {
        return (
            <AppLoading
                startAsync={this._loadAssetsAsync}
                onFinish={() => this.setState({isReady: true})}
                onError={console.warn}
            />
        );
    }
        return (
            <Provider store={store}>
                <Main />
            </Provider>
        );
    }
}