安装

参考Ionicons

npm install react-native-vector-icons --save

这时候可能会报错：npm WARN deprcated lodash@4.2.0:This package is deprecated. Use Object.assign.

运行命令行
npm i --save lodash.assign
In Node.js:

var assign = require('lodash.assign');   

npm install rnpm -g

rnpm link

使用

引入vector-icons:

var Icon = require('react-native-vector-icons/Ionicons');

修改组件值：eg.

Button -> Icon.Button
TabBarIOS.Item -> Icon.TabBarItem

修改属性值：eg.

icon -> iconName
selectedIcon -> selectedIconName

坑

碰到过Ionians导入不成功，错误提示信息为：

Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: undefined. 

于是我将 var Icon = require('react-native-vector-icons/Ionicons');改为
import Icon from 'react-native-vector-icons/Ionicons';导入成功