React Native StackNavigator initialRouteName - reactjs

Question

In React Native Navigation library 'react-navigation'
How could I set StackNavigator initialRouteName by AsyncStorage?
function getInitialScreen() {
AsyncStorage.getItem('initialScreen')
.then(screenName => {
return (screenName)
? screenName
: 'Login';
})
.catch(err => {});
}
const Navigator = StackNavigator({
Splash: { screen: Splash },
Login: { screen: Login },
WebPage: { screen: WebPage }
}, {
initialRouteName: getInitialScreen()
});

Answer 1

Changing InitialRouteName with multiple Route depending upon your requirement. I have got it working this way.
create router file import all your screens.
export a stateless function call it createRootNavigator with params as (load="<Your initial screen>")
export const createRootNavigator = (load="<Your Initial Screen>") => {
return stackNavigator({
Initialize: {
screen: Initialize,
},
Main: {
screen: Main,
},
{
initialRouteName: load
}
})
}
In your main app,
state = {
load: "<Your Initial Screen>"
}
eg:
state = {
load: "Initialize" // value is string
}
Set the state accordingly in componentDidMount() method. And finally render new layout.
render() {
const Layout = createRootNavigator(this.state.load);
<Layout />
}
The above method worked fine for me. Hope it helps somebody.

Answer 2

I’ve also had this problem and currently the only good solution is the following example:
const RootNavLogged = StackNavigator({
...
},{
initialRouteName : 'Home'
});
const RootNav = StackNavigator({
...
},{
initialRouteName : 'Login'
});
class App extends Component {
render(){
if (this.props.userLogged == true ){
return (
<RootNavLogged/>
)
} else {
return(
<RootNav/>
)
}
}
}

Answer 3

Full Solution from React Native Navigation on Restart:
const Navigator = StackNavigator({
InitialScreen: {
screen: InitialScreen
},
Splash: {
screen: Splash
},
LanguageStartup: {
screen: LanguageStartup
},
Login: {
screen: Login
},
Register: {
screen: Register
}
}, {initialRouteName: 'InitialScreen'});
export default Navigator;
My Initial Screen
import React, {Component} from 'react';
import {connect} from 'react-redux';
import * as GeneralPref from './../preferences/GeneralPref'
import Log from './../utils/Log'
import {AsyncStorage, View} from 'react-native';
import * as Pref from './../preferences/Preferences';
import {NavigationActions} from 'react-navigation'
const TAG = 'InitialScreen'
class InitialScreen extends Component {
static navigationOptions = {
header: false
};
componentWillMount() {
Log(TAG+' Mount')
const {navigate} = this.props.navigation;
GeneralPref
.getInitialScreen()
.then(value => {
Log(TAG+' Initial',value)
if (value != null) {
Log(TAG+' Initial',value)
return value
} else {
Log(TAG+' No Initial','Splash')
return 'Splash'
}
})
.then(screenName => this.props.navigation.dispatch(NavigationActions.reset({
index: 0,
actions: [NavigationActions.navigate({routeName: screenName})]
})))
.catch(err => {
Log(TAG+' Initial Error',value)
this.props.navigation.dispatch(NavigationActions.reset({
index: 0,
actions: [NavigationActions.navigate({routeName: 'Splash'})]
}))
});
}
render() {
return null;
}
}
export default InitialScreen;
then in Language Screen
changeLanguageTo(language) {
Log(TAG+'Change Language', "Change Language To: " + language.code);
// Log(TAG, 'Current State');
Log(TAG+' Language State', language);
GeneralPref.setInitialScreen('Login');
this
.props
.actions
.changeLanguage(language);
I18nManager.forceRTL(true);
// Immediately reload the React Native Bundle
RNRestart.Restart();
};