What I want to do is wrapp on the very top of my app a switch navigator named MainNavigator which redirect to a LoadingScreen who determine if user is Logged or no and navigate to AuthNavigator or AppNavigator. AuthNavigator himself is a stackNavigator who display screens 'LoginScreen' or 'SignUpScreen'. AppNavigator is a DrawerNavigator with multiple screens (Profile, Home...).
The problem I encouter is that the return method seems to work, because I can see the logs in my console from the 'LoginScreen' component but on the screen, the only return is a white screen.. When I call directly my 'LoginScreen' component from the LoadingScreen component by using :
_bootstrapAsync = async () => {
const userToken = await AsyncStorage.getItem('userToken');
// This will switch to the App screen or Auth screen and this loading
// screen will be unmounted and thrown away. switched to develop the app
this.props.navigation.navigate(userToken ? 'App' : 'LoginScreen');
};
I had the LoginScreen component rendered on my device.
I know the problem come from my AuthNavigator and AppNavigator because I can return screens components from AuthLoading or MainNavigator Here some code :
* Main Navigator: entry point of the app
* Redirect to AuthLoadingScreen by default,
* if user is signed (AsyncStorage) or successly signIn
* redirect to AppNavigator else if user isn't SignIn
* go to AuthNavigator
import { createAppContainer, createSwitchNavigator } from 'react-
navigation';
import AuthNavigator from './auth/AuthNavigator'
import AppNavigator from './app/AppNavigator'
import AuthLoadingScreen from '../screens/auth/AuthLoadingScreen'
export default createAppContainer(createSwitchNavigator(
{
// You could add another route here for authentication.
// Read more at https://reactnavigation.org/docs/en/auth-flow.html
AuthLoading: AuthLoadingScreen,
App: AppNavigator,
Auth: AuthNavigator,
},
{
initialRouteName: 'AuthLoading',
}
));
AuthLoading :
import React from 'react';
import {
ActivityIndicator,
AsyncStorage,
StatusBar,
StyleSheet,
View,
Text
} from 'react-native';
export default class AuthLoadingScreen extends React.Component {
constructor(props) {
super(props);
this._bootstrapAsync();
}
// Fetch the token from storage then navigate to our appropriate place
_bootstrapAsync = async () => {
const userToken = await AsyncStorage.getItem('userToken');
// This will switch to the App screen or Auth screen and this loading
// screen will be unmounted and thrown away. switched to develop the app
this.props.navigation.navigate(userToken ? 'App' : 'Auth');
};
// Render any loading content that you like here
render() {
return (
<View>
<Text>Loading</Text>
<ActivityIndicator />
<StatusBar barStyle="default" />
</View>
);
}
}
AuthNavigator:
import { createStackNavigator } from 'react-navigation';
import LoginScreen from '../../screens/auth/LoginScreen';
import SignUpScreen from '../../screens/auth/SignUpScreen';
export default createStackNavigator({
Login : {
screen : LoginScreen
},
SignUp: {
screen : SignUpScreen
}
},
{
initialRouteName: 'Login',
})
LoginScreen:
import React, { Component } from 'react';
import { View, Text, StyleSheet } from 'react-native';
export default class LoginScreen extends Component {
render() {
console.log('LOGIN SCREEN')
return (
<View style={styles.container}>
<Text style={styles.text}>Login</Text>
</View>
);
}
}
const styles = StyleSheet.create({
container: {
flex: 1,
alignItems: 'center',
justifyContent: 'center',
},
text : {
fontSize: 20,
}
});
I can't find the error, but I know it comes from the AuthNavigator and AppNavigator. I can see the 'LOGIN SCREEN' or 'APP SCREEN' if I set the AuthLoading route to render App in my console but nothing on the screen, when I init a new route LoginScreen in my MainNavigator and navigate to that route from the AuthLoading it works, I have a beautiful text displayed on my screen.
I Know it's probably an insignifiant error but I spend hours to fix this by myself and can't find, so if someone can help me it would be nice!
Thanks by advance!
