未找到模块：无法解析“material-ui/styles/colors”

Question

我有以下未编译的代码：

import React from 'react';
import { AppBar, Toolbar } from 'material-ui';
import { Typography } from 'material-ui';
import { MuiThemeProvider, createMuiTheme } from 'material-ui/styles';
import {cyan, red} from 'material-ui/colors';
import { red400 } from 'material-ui/styles/colors';


const theme = createMuiTheme({
  palette: {
    primary: red400,
    secondary: cyan, 
  },
});

const View = (props) => (
  <MuiThemeProvider theme={theme}>
    <AppBar position="static">
      <Toolbar>
      <Typography variant="title">
        {props.title}
      </Typography>          
      </Toolbar>
    </AppBar>
  </MuiThemeProvider>
);
export default View;

上面写着：

Failed to compile
./src/Dashboard/AppBar/Views/View.js
Module not found: Can't resolve 'material-ui/styles/colors' in '/home/developer/Desktop/react-reason/example/src/Dashboard/AppBar/Views'  

我做错了什么？

Answer 1

将 cmets 中的讨论移到此处：

确保您安装了next 版本的material-ui：

npm install material-ui@next

此导入语句不正确：

import { red400 } from 'material-ui/styles/colors'

应该是这样的：

import red from 'material-ui/colors/red';

这里，red 是文档中所说的“颜色对象”。 然后您可以使用它来创建您的主题对象，如下所示：

const theme = createMuiTheme({
  palette: {
    primary: {
      main: red[500], //OR red['A400'] for the accent range
      contrastText: '#fff', // The text color to use
      // You can also specify light, dark variants to use (it's autocomputed otherwise)
    }
    //You can also just assign the color object if the defaults work for you
    secondary: red,
    error: red
    //tonalOffset
    //contrastThreshold

  },
});

在上面的代码中，键 primary secondary 和 error 接受颜色对象或“调色板意图”，这是一个看起来像这样的对象：

interface PaletteIntention {
  light?: string;
  main: string;
  dark?: string;
  contrastText?: string;
};

唯一需要的密钥是main。如果未提供，其余部分将根据 main 的值自动计算。

参考：

The docs have a detail section on themes which explains all of this in detail.

Answer 2

试试这个

import { MuiThemeProvider, createMuiTheme } from '@material-ui/core/styles';