示例

import React, { Component } from 'react';
import {
  Platform,
  StyleSheet,
  Text,
  View,
  SafeAreaView
} from 'react-native';
import { createMaterialBottomTabNavigator } from 'react-navigation-material-bottom-tabs';
import { createMaterialTopTabNavigator } from 'react-navigation';
import Icon from 'react-native-vector-icons/Ionicons';

export default class App extends Component {
  render() {
    return (
      <SafeAreaView style={{ flex: 1 }}>
        <MaterialTopTabNavigator />
      </SafeAreaView>
    )
  }
}

class HomeScreen extends Component {
  render() {
    return (
      <View style={styles.container}>
        <Text>
          主页
        </Text>
      </View>
    );
  }
}
class SettingsScreen extends Component {
  render() {
    return (
      <View style={styles.container}>
        <Text>
          设置页面
        </Text>
      </View>
    );
  }
}
class ProfileScreen extends Component {
  render() {
    return (
      <View style={styles.container}>
        <Text>
          个人主页
        </Text> 
      </View>
    );
  }
}
class FeedScreen extends Component {
  render() {
    return (
      <View style={styles.container}>
        <Text>
          反馈中心
        </Text>
      </View>
    );
  }
}

const MaterialTopTabNavigator = createMaterialTopTabNavigator({
  Home: {
    screen: HomeScreen,
    navigationOptions: {
      tabBarLabel: '主页',
      tabBarIcon: ({ tintColor }) => (
        <Icon name='ios-home' color={tintColor} size={24} />
      ),
    }
  },
  Settings: {
    screen: SettingsScreen,
    navigationOptions: {
      tabBarLabel: '设置',
      tabBarIcon: ({ tintColor }) => (
        <Icon name='ios-settings' color={tintColor} size={24} />
      ),
    }
  },
  Profile: {
    screen: ProfileScreen,
    navigationOptions: {
      tabBarLabel: '个人中心',
      tabBarIcon: ({ tintColor }) => (
        <Icon name='ios-list-box' color={tintColor} size={24} />
      ),
    }
  },
  Feed: {
    screen: FeedScreen,
    navigationOptions: {
      tabBarLabel: '反馈',
      tabBarIcon: ({ tintColor }) => (
        <Icon name='ios-microphone' color={tintColor} size={24} />
      ),
    }
  },
}, {
  initialRouteName: 'Home',
  // swipeEnabled: false, // 是否允许滑动切换tabs 默认是true
  animationEnabled: false, // 点击tab label切换tab时是否开启动画 默认为true
  // order: ['Settings', 'Home'],
  tabBarPosition: 'bottom', // tab bar显示的位置，默认是 'top'
  tabBarOptions: {
    activeTintColor: 'orange',
    inactiveTintColor: 'grey',
    style: {
      backgroundColor: '#f2f2f2',
      borderTopWidth: 0.5,
      borderTopColor: 'grey',
    },
    indicatorStyle: {
      height: 0, // 不显示indicator
    },
    showIcon: true, // 是否显示图标, 默认为false
    showLabel: false, // 是否显示label
  },
});

const styles = StyleSheet.create({
  container: {
    flex: 1,
    justifyContent: 'center',
    alignItems: 'center',
    backgroundColor: '#F5FCFF',
  },
});

值得注意的点：