App.js

import { AppLoading } from "expo";
import { Asset } from "expo-asset";
import * as Font from "expo-font";
import React, { useState } from "react";
import { StatusBar, StyleSheet, View } from "react-native";
import { Ionicons } from "@expo/vector-icons";
import { Provider } from "react-redux";
import AppNavigator from "./src/navigation/AppNavigator";
import { store, persistor } from "./src/store";
import { PersistGate } from "redux-persist/integration/react";
import Notification from "./src/components/Notification/Notification";

export default function App(props) {
  const [isLoadingComplete, setLoadingComplete] = useState(false);

  if (!isLoadingComplete && !props.skipLoadingScreen) {
    return (
      <AppLoading
        startAsync={loadResourcesAsync}
        onError={handleLoadingError}
        onFinish={() => handleFinishLoading(setLoadingComplete)}
      />
    );
  } else {
    return (
      <View style={styles.container}>
        <StatusBar barStyle="dark-content" />
        <Provider store={store}>
          <Notification />
          <PersistGate loading={null} persistor={persistor}>
            <AppNavigator />
          </PersistGate>
        </Provider>
      </View>
    );
  }
}

async function loadResourcesAsync() {
  await Promise.all([
    Asset.loadAsync([
      require("./src/assets/images/robot-dev.png"),
      require("./src/assets/images/robot-prod.png")
    ]),
    Font.loadAsync({
      // This is the font that we are using for our tab bar
      ...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("./src/assets/fonts/SpaceMono-Regular.ttf"),
      "montserrat-regular": require("./src/assets/fonts/Montserrat-Regular.ttf"),
      "montserrat-medium": require("./src/assets/fonts/Montserrat-Medium.ttf"),
      "montserrat-semi-bold": require("./src/assets/fonts/Montserrat-SemiBold.ttf"),
      "montserrat-bold": require("./src/assets/fonts/Montserrat-Bold.ttf"),
      "montserrat-italic": require("./src/assets/fonts/Montserrat-Italic.ttf")
    })
  ]);
}

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

function handleFinishLoading(setLoadingComplete) {
  setLoadingComplete(true);
}

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