场景：首页有两个链接，分别跳转到登录页面和注册页面。
登录页面也有一个链接跳转到注册页面，注册页面也有一个链接跳转到登录页面。

android.index.js 代码

/**
 * Sample React Native App
 * http://uminicmf.com
 * auth:duerhong
 * email:1186969412 qq:1186969412
 */

import React, { Component } from 'react';
import {
  AppRegistry,
  StyleSheet,
  Text,
  View
} from 'react-native';
import Home from './Auth';
export default class dudu extends Component {
  render() {
    return (
      <Home />
    );
  }
}
AppRegistry.registerComponent('dudu', () => dudu);

Auth.js 首页代码实现

'use strict';
import React, { Component } from 'react';
import {
    StyleSheet,
    View,
    Text,
    Button,
    ToastAndroid,
} from 'react-native';
import {TabNavigator,StackNavigator} from 'react-navigation';
import LoginScreen from './app/Login';
import RegisterScreen from './app/Register';
class SignIn extends Component {
    _getpen(){
      this.props.navigation.goBack();
    }
    render() {
      const { navigate } = this.props.navigation;
      return (
        <View>
          <Text>首页</Text>
          <Button
          title="去登录"
          onPress={() =>navigate('Login', { name: 'Jane' })}
          />
          <Button
          title="去注册"
          onPress={() =>navigate('Register', { name: 'Jane' })}
          />
        </View>
      );
    }
}
const App = StackNavigator({
  Home: {
    screen: SignIn,
    navigationOptions: {
      header: null // 无标题栏
    }
  },
  Login: {
    screen: LoginScreen,
    navigationOptions: {
      header: null // 无标题栏
    }
  },
  Register: {
    screen: RegisterScreen,
    hnavigationOptions: {
      header: null // 无标题栏
    }
  },
});
module.exports = App;

login.js 代码实现

import React, { Component } from 'react';
import {
    StyleSheet,
    View,
    Text,
    Button,
} from 'react-native';
import {TabNavigator,StackNavigator} from 'react-navigation';
import RegisterScreen from './Register';
// import AuthScreen from './Auth';
class LoginScreen extends Component {
  _getpen(){
    this.props.navigation.goBack();
  }
  static navigationOptions = {
    title: 'Welcome',
  };
    render() {
      const { navigate } = this.props.navigation;
        return (
        <View>
            <Text>登录页面</Text>
            <Button
            title="返回首页"
            onPress={() =>navigate('Home', { name: 'Jane' })}
            />
            <Button
            title="去注册"
            onPress={() =>navigate('Register', { name: 'Jane' })}
            />
        </View>
        );
    };
}
const Apps = StackNavigator({
  Logins: {
    screen: LoginScreen,
    navigationOptions: {
      header: null // 无标题栏
    }
  },
});
module.exports=Apps;

register.js代码实现

import React, { Component } from 'react';
import {
    StyleSheet,
    View,
    Text,
    Button,
} from 'react-native';
class RegisterScreen extends Component {
    render() {
        return (
        <View>
            <Text>注册页面</Text>
        </View>
        );
    };
}
module.exports=RegisterScreen;