How to get header button in react native - react-native

Question

I have created a different class for navigation to maintain the state of loggedIn and loggedOut user as follows:-
import React from "react";
import { createStackNavigator, createSwitchNavigator, DrawerNavigator } from "react-navigation";
import DrawerContent from "../views/Sidebar"
import Profile from '../views/Profile';
import Extra from '../views/Extra';
import SignIn from '../views/SignIn';
import Home from '../views/Home';
import Info from '../views/Info';
import Logout from '../views/Logout';
export const SignedIn = createStackNavigator({
Home: {
screen: Home,
},
Profile: {
screen: Profile,
},
Extra: {
screen: Extra,
}
});
export const SignedOut = createStackNavigator({
SignIn: {
screen: SignIn,
navigationOptions: {
title: "Sign Up",
headerRight: <Text>Hi</Text> //calling this gives an error
}
},
});
export const RootNavigator = (signedIn = false) => {
return createSwitchNavigator(
{
SignedIn: {
screen: SignedIn,
navigationOptions: {
gesturesEnabled: false
}
},
SignedOut: {
screen: SignedOut,
navigationOptions: {
gesturesEnabled: false
}
}
}, {
headerMode: "none",
mode: "modal",
initialRouteName: signedIn ? "SignedIn" : "SignedOut"
}
);
};
I want to create a button in navigation bar on signUp screen but it is giving an error like :-
header Title is easily shown onto screen but the right and left button doesn't seems to be appear. Any help on this.

Answer 1

Your header button must be a component
The way you are using is not pointing to a valid component
To do that either create a new component 'HeaderRight' and import it like you did for the 'Home' component,then point your headerRight property to it
Like headerRight:HeaderRight
Or simply wrap your text element within parenthesis like this
headerRight:(<Text>Hi</Text>)
Try and tell me if it is solved
Best regards