landingscreen.js

import React from 'react';
import ReactNative from 'react-native';
import { AppRegistry,Text,View,Button,} from 'react-native';
import { StackNavigator } from 'react-navigation'
import AccountFields from './emailandpass'
//import login      from './login'
//import confirmation from './confirmation'
//import success      from './success'

class Loginscreen extends React.Component{
	static navigtionOptions= {
		title: 'Welcome to LearnD',
							 }
  render() {
  	const { navigate  } = this.props.navigation;
    return(
      <View>
      <Text>Have you got an account ?</Text>
      <Button
        onPress={()=> navigate('AccountFields')}
        title="Register here !"
        />
      </View>
    );
  }
};

const App = StackNavigator({
 	Home: { screen: Loginscreen},
 	AccountFields: {screen: AccountFields  },
});

AppRegistry.registerComponent('ReactNavigation', () => App)
module.exports = App