Problem to return component from StackNavigator in react-native. Get a blank screen but cosole.log is OK

Question

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!

Leo Prud'hom Leo Prud'hom · Accepted Answer · 2019-04-19T15:53:23

Problem solved... Because at the top of my app in App.js I wrapped my MainNavigator like that

<View>
<StatusBar hidden={true} /> 
<MainNavigator />
</View>

So I remove the view and statusbar... and it works. 4 days to figure it out... I love it! :')

Problem to return component from StackNavigator in react-native. Get a blank screen but cosole.log is OK

1 Answers