Prevent user from returning to previous screen StackNavigator

I want to do a simple task: after a successful login redirect the user to his home page. I use react-navigation's StackNavigator for that purpose:

// App.jsclass App extends Component {  render() {    return (<RootStack />);  }}const RootStack = createStackNavigator(  {    Login: { screen: Login, navigationOptions: { header: null }},    Home: { screen: Home, navigationOptions: { header: null }}  },  {    initialRouteName: 'Root'  })

How do I prevent user from returning to Login screen after login? To prevent use back button in android, I would use this one:

// Home.jsimport React, { Component} from 'react';import { ... , BackHandler } from 'react-native';class Home extends Component {    constructor(props) {        super(props);        BackHandler.addEventListener('hardwareBackPress', this.onBackButtonPressAndroid);    }    onBackButtonPressAndroid = () => {        return true;    }}

But doing this way, I disable back button at all. Is there another way to achieve the goal?