App.js

import React from 'react';
import { Platform, StatusBar, StyleSheet, View, Text } from 'react-native';
import { AppLoading, Asset, Font, Icon } from 'expo';
import AppNavigator from './navigation/AppNavigator';
import Footer from './components/Footer';

Text.defaultProps = {
  allowFontScaling: true
};

export default class App extends React.Component {
  constructor() {
    super();
    console.ignoredYellowBox = ['Setting a timer'];
  }
  state = {
    isLoadingComplete: false
  };
  handleNavigation(navigationProps) {
  }
  render() {
    if (!this.state.isLoadingComplete && !this.props.skipLoadingScreen) {
      return (
        <AppLoading
          startAsync={this._loadResourcesAsync}
          onError={this._handleLoadingError}
          onFinish={this._handleFinishLoading}
        />
      );
    } else {
      return (
        <View style={styles.container}>
          {Platform.OS === 'ios' && <StatusBar barStyle="default" />}
          <AppNavigator onNavigationSet={this.handleNavigation} />
          <Footer />
        </View>
      );
    }
  }

  _loadResourcesAsync = async () => {
    // should load all the data in the application.

    console.log('Loading the resources');
    // return Promise.all([
    //   Asset.loadAsync([
    //     require('./assets/images/robot-dev.png'),
    //     require('./assets/images/robot-prod.png'),
    //   ]),
    //   Font.loadAsync({
    //     // This is the font that we are using for our tab bar
    //     ...Icon.Ionicons.font,
    //     // We include SpaceMono because we use it in HomeScreen.js. Feel free
    //     // to remove this if you are not using it in your app
    //     'space-mono': require('./assets/fonts/SpaceMono-Regular.ttf'),
    //   }),
    // ]);
  };

  _handleLoadingError = error => {
    // In this case, you might want to report the error to your error
    // reporting service, for example Sentry
    console.warn(error);
  };

  _handleFinishLoading = () => {
    this.setState({ isLoadingComplete: true });
  };
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    backgroundColor: '#fff'
  }
});