App.js

import React from 'react'
import { Platform, StatusBar, StyleSheet, View } from 'react-native'
import { Provider as PaperProvider } from 'react-native-paper'
import { AppLoading } from 'expo'
import * as Font from 'expo-font'
import * as Icon from '@expo/vector-icons'
import AppNavigator from './navigation/AppNavigator'

export default class App extends React.Component {
  state = {
    isLoadingComplete: false,
    isReady: false
  }
  async componentDidMount() {
    await Font.loadAsync(
      'antoutline',
      // eslint-disable-next-line
      require('@ant-design/icons-react-native/fonts/antoutline.ttf')
    )

    await Font.loadAsync(
      'antfill',
      // eslint-disable-next-line
      require('@ant-design/icons-react-native/fonts/antfill.ttf')
    )
    // eslint-disable-next-line
    this.setState({ isReady: true })
  }

  render() {
    if (
      !this.state.isLoadingComplete &&
      !this.props.skipLoadingScreen &&
      !this.isReady
    ) {
      return (
        <AppLoading
          startAsync={this._loadResourcesAsync}
          onError={this._handleLoadingError}
          onFinish={this._handleFinishLoading}
        />
      )
    } else {
      return (
        <PaperProvider>
          <View style={styles.container}>
            {Platform.OS === 'ios' && <StatusBar barStyle='default' />}
            <AppNavigator />
          </View>
        </PaperProvider>
      )
    }
  }

  _loadResourcesAsync = async () => {
    return Promise.all([
      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'
  }
})