How to pass a prop to all tabs of a createBottomTabNavigator - react-native

Question

My application is calling a createBottomTabNavigator from a createSwitchNavigator using the following this.props.navigation.navigate('AppMenu', {UserName: 'First Name'}); The createBottomTabNavigator consists of 2 tabs, one is a Stack Navigator and the second is just a React component. When I navigate to the initialRouteName of the Stack Navigator the prop I passed in is available, but if I select the second tab of the Tab Navigator the prop is not available.
Is there a way I can pass a prop to all tabs of a Bottom Tab Navigator when it is rendered?
Here is a diagram of the applications, and sample code that can be run in Snack.
import React from 'react';
import { Text, View, Button } from 'react-native';
import { createBottomTabNavigator, createStackNavigator, createSwitchNavigator } from 'react-navigation';
class LoginScreen extends React.Component {
_navToMain = () => {
console.log('Login Screen: Passing user: First Name');
this.props.navigation.navigate('AppMenu', {UserName: 'First Name'});
}
render () {
return (
<View style={{flexDirection: 'column', paddingTop:20}}>
<Text>Pass UserName prop to createBottomTabNavigator</Text>
<Button title='Login!' onPress={this._navToMain}/>
</View>
)
}
}
class SyncScreen extends React.Component {
static navigationOptions = ({ navigation }) => {
return {
headerTitle: 'Sync Screen',
};
};
render () {
return (
<View style={{flexDirection: 'column', paddingTop:20}}>
<Text>Sync Screen Navigation Prop UserName (missing!): {JSON.stringify(this.props.navigation.getParam('UserName'))}</Text>
<Button title='Test Button' onPress={() => {}} />
</View>
);
}
}
class AppMenuScreen extends React.Component {
static navigationOptions = ({ navigation }) => {
return {
headerTitle: 'Stack Navigator',
};
};
_navToOne = () => {
console.log('Going to Stack One')
this.props.navigation.navigate('StackOne', {UserName: this.props.navigation.getParam('UserName')});
}
render () {
return (
<View style={{flexDirection: 'column'}} >
<Text>App Menu Navigation Prop UserName passed from SwitchNavigator: {JSON.stringify(this.props.navigation.getParam('UserName'))}</Text>
<Button title='Screen one' onPress={this._navToOne} />
</View>
)
}
}
class StackOneScreen extends React.Component {
static navigationOptions = ({ navigation }) => {
return {
headerTitle: 'Stack One Screen',
};
};
render () {
return (
<View style={{flexDirection: 'row'}} >
<Text>Stack One Screen Navigation Props: {JSON.stringify(this.props.navigation.getParam('UserName'))}</Text>
</View>
)
}
}
const AppStack = createStackNavigator(
{
AppMenu: AppMenuScreen,
StackOne: StackOneScreen,
},
{
initialRouteName: "AppMenu",
navigationOptions: {
headerTintColor: "#a41034",
headerStyle: {
backgroundColor: "#fff"
}
}
}
);
const MainTabs = createBottomTabNavigator(
{
'Apps': { screen: AppStack },
'Sync': { screen: SyncScreen },
},
{
navigationOptions: ({ navigation }) => ({
title: navigation.state,
tabBarIcon: ({ focused, horizontal, tintColor }) => {
const { routeName } = navigation.state;
}
}),
tabBarOptions: {
activeTintColor: 'red',
inactiveTintColor: 'gray',
tabBackgroundColor: 'black',
labelStyle:{
fontSize: 24,
marginBottom:10,
}
},
animationEnabled: true,
swipeEnabled: false,
}
);
const AppNavigator = createSwitchNavigator(
{
Login: LoginScreen,
Main: MainTabs
},
{
initialRouteName: 'Login',
backBehavior: "initialRoute",
}
);
export default class App extends React.Component {
render() {
return (
<AppNavigator />
);
}
}
Package.json
"react": "16.5.0",
"react-native": "0.57.1",
"react-navigation": "^2.0.0"

Answer 1

you can pass props on navigate using
_navToOne = () => {
console.log("Going to Stack One");
this.props.navigation.navigate({
routeName: "StackOne",
params: { UserName: this.props.navigation.state.params.UserName }
});
};
if you want to access props passed using navigate
this.props.navigation.state.params.PROPNAME
// PROPNAME is the prop you passed and want to get

Answer 2

It's just a temporary solution, at least these code can solve your issue
When I navigate to the initialRouteName of the Stack Navigator the prop I passed in is available, but if I select the second tab of the Tab Navigator the prop is not available
because you just sent the param into AppMenu using this.props.navigation.navigate('AppMenu', {UserName: 'First Name'});
UserName is available on both of tab after i change the code of LoginScreen class :
class LoginScreen extends React.Component {
_navToMain = () => {
console.log('Login Screen: Passing user: First Name');
//-------add this-------
this.props.navigation.navigate('Sync', {UserName: 'First Name'});
//----------------------
this.props.navigation.navigate('AppMenu', {UserName: 'First Name'});
}
render () {
return (
<View style={{flexDirection: 'column', paddingTop:20}}>
<Text>Pass UserName prop to createBottomTabNavigator</Text>
<Button title='Login!' onPress={this._navToMain}/>
</View>
)
}
}