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App.js
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App.js
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import 'react-native-gesture-handler';
import React from 'react';
import { NavigationContainer } from '@react-navigation/native';
import MainTabNavigator from './navigation/MainTabNavigator';
import LoginStackNavigator from './navigation/LoginStackNavigator';
import ApiKeys from './constants/ApiKeys';
import * as firebase from 'firebase';
export default class App extends React.Component
{
constructor(props){
super(props);
this.state = {
isAuthenticated: false,
};
if (!firebase.apps.length){
firebase.initializeApp(ApiKeys.firebaseConfig);
}
firebase.auth().onAuthStateChanged(this.onAuthChange);
}
onAuthChange = (user) => {
this.setState({isAuthenticated: !!user});
}
render(){
if (this.state.isAuthenticated){
// If logged in, show Main Tab Navigator
return (
<NavigationContainer>
<MainTabNavigator />
</NavigationContainer>
);
} else {
return (
<NavigationContainer>
<LoginStackNavigator />
</NavigationContainer>
);
}
}
}