react native complete reference code example

Example: react native complete reference

import React, { Component } from 'react'
import { AppLoading, Font } from 'expo';
import Routes from './screens/Routes'

class App extends Component {
 state = {
   isFontLoaded: false
 }

 async componentDidMount() {
   await Font.loadAsync({
     'dogbyte': require('./assets/fonts/dogbyte.otf'),
   });
   this.setState({ isFontLoaded: true })
 }

 render() {
   if(!this.state.isFontLoaded) {
     return <AppLoading />
   } else {
     return <Routes />
   }
 }
}

export default App;