ReactNative.createElement is deprecated. Use React.createElement from the "react" package instead.

最近在调试RN时出现一个黄色警报框，内容是:Warning: ReactNative.createElement is deprecated. Use React.createElement from the “react” package instead.

查了下一些资料。发现问题是React Native在升级到0.25.1版本后修改了导入方式。具体如下：

Deprecations

Requiring React API from react-native is now deprecated - 2eafcd4 0b534d1
Instead of:

import React, { Component, View } from 'react-native';

you should now:

import React, { Component } from 'react';
import { View } from 'react-native';

就是说之前是全部通过react-native来导入的，但是现在除了View通过react-native来导入外，其他都通过react来导入。
具体详情可以看react-native 0.25版本更新日志。