React-Native-Warnung in Chrome-Debug-Tools und React-Dev-Tools können nicht verwendet werden

Question

1. Ich verwende react@16.0.0-alpha.12， react-native@0.45.1 und es kann normal in der Simulation verwendet werden, aber im Chrome-Debugging-Tool erscheint eine Warnung:

ExceptionsManager.js:71 Warning: PropTypes has been moved to a separate package. Accessing React.PropTypes is no longer supported and will be removed completely in React 16. Use the prop-types package on npm instead. (https://fb.me/migrating-from-react-proptypes)

ExceptionsManager.js:71 Warning: React.createClass is no longer supported. Use a plain JavaScript class instead. If you're not yet ready to migrate, create-react-class is available on npm as a drop-in replacement. (https://fb.me/migrating-from-react-create-class)

Und kann React Dev-Tools nicht zum Debuggen verwenden

1. Mein Code:

/**
 * Sample React Native App
 * https://github.com/facebook/react-native
 * @flow
 */

import React, { Component } from 'react'
import {
  AppRegistry,
  View,
  Text,
  StyleSheet
} from 'react-native'
export default class second extends Component{
  render () {
    return (
      <View style={{
         flex: 1,
        flexDirection: 'column',
        justifyContent: 'center',
        alignItems: 'center',
        backgroundColor: 'ghostwhite'
      }}>
        <Text style={{fontSize: 28, color: 'cadetblue'}}>class extends</Text>
      </View>
    )
  }
  componentDidMount () {
    console.log('==========')
    this.testConsolelog()
  }
  testConsolelog () {
    console.log('e3423423432')
  }
}

const styles2 = StyleSheet.create({
  bigblue: {
    color: 'blue',
    fontWeight: 'bold',
    fontSize: 30,
  },
  red: {
    color: 'red',
  },
});
AppRegistry.registerComponent('second', () => second);

Answer 1

你用的react16中，已经弃用了React.createClass这个方法。

因此react16的版本就无法通过该方法来创建组件了。你必须使用ES6的方式来创建组件了。

class Test extends React.Component {
    ...
}

如果你的代码中用了mixins而必须使用createClass的话，你需要单独引入另外一个工具库。

var createReactClass = require('create-react-class');

另外，React.propTypes也不能使用了，你想要检测props，react16中需要引入一个单独的工具。

import PropTypes from 'prop-types';

Answer 2

不能使用react dev-tools, 是不是没有勾选允许访问文件地址