React Native Undefined is not an object(evaluating ‘_react2.PropTypes.func’)

我原来的写法

import React, { Component, PropTypes } from 'react';

export default class CommonTitle extends Component {

    render() {

        return (

          …

        )

    }

 }

CommonTitle.propTypes = {

    onTitleClick: PropTypes.func.isRequired

}

PropTypes 放在了react 中引入，但是还是出错

Undefined is not an object(evaluating ‘_react2.PropTypes.func’)

正确写法：

import React, { Component } from 'react';

import PropTypes from 'prop-types';

把PropTypes 从prop-types 中引入