Reactjs 将材质ui功能组件迷你变量抽屉转换为类组件

Reactjs 将材质ui功能组件迷你变量抽屉转换为类组件,reactjs,react-redux,material-ui,Reactjs,React Redux,Material Ui,我使用的迷你变型抽屉从材料用户界面官方网站 我正试图转换成类组件,但出现了很多问题。其中一些是挂钩相关的,通过节点模块发生。 任何主体都可以在类组件中使用此组件吗 import React from 'react' import clsx from 'clsx' import { createStyles, makeStyles, useTheme, Theme } from '@material-ui/core/styles' import

我使用的迷你变型抽屉从材料用户界面官方网站

我正试图转换成类组件,但出现了很多问题。其中一些是挂钩相关的,通过节点模块发生。 任何主体都可以在类组件中使用此组件吗

  import React from 'react'
  import clsx from 'clsx'
  import {
    createStyles,
    makeStyles,
    useTheme,
    Theme
  } from '@material-ui/core/styles'
  import Drawer from '@material-ui/core/Drawer'
  import AppBar from '@material-ui/core/AppBar'
  import Toolbar from '@material-ui/core/Toolbar'
  import List from '@material-ui/core/List'
  import CssBaseline from '@material-ui/core/CssBaseline'
  import Typography from '@material-ui/core/Typography'
  import Divider from '@material-ui/core/Divider'
  import IconButton from '@material-ui/core/IconButton'
  import MenuIcon from '@material-ui/icons/Menu'
  import ChevronLeftIcon from '@material-ui/icons/ChevronLeft'
  import ChevronRightIcon from '@material-ui/icons/ChevronRight'
  import ListItem from '@material-ui/core/ListItem'
  import ListItemIcon from '@material-ui/core/ListItemIcon'
  import ListItemText from '@material-ui/core/ListItemText'
  import InboxIcon from '@material-ui/icons/MoveToInbox'
  import MailIcon from '@material-ui/icons/Mail'

  const drawerWidth = 240

  const useStyles = makeStyles((theme: Theme) =>
    createStyles({
      root: {
        display: 'flex'
      },
      appBar: {
        zIndex: theme.zIndex.drawer + 1,
        backgroundColor: 'transparent',
        transition: theme.transitions.create(['width', 'margin'], {
          easing: theme.transitions.easing.sharp,
          duration: theme.transitions.duration.leavingScreen
        })
      },
      appBarShift: {
        marginLeft: drawerWidth,
        width: `calc(100% - ${drawerWidth}px)`,
        transition: theme.transitions.create(['width', 'margin'], {
          easing: theme.transitions.easing.sharp,
          duration: theme.transitions.duration.enteringScreen
        })
      },
      menuButton: {
        marginRight: 36
      },
      hide: {
        display: 'none'
      },
      drawer: {
        width: drawerWidth,
        flexShrink: 0,
        whiteSpace: 'nowrap'
      },
      drawerOpen: {
        width: drawerWidth,
        transition: theme.transitions.create('width', {
          easing: theme.transitions.easing.sharp,
          duration: theme.transitions.duration.enteringScreen
        })
      },
      drawerClose: {
        transition: theme.transitions.create('width', {
          easing: theme.transitions.easing.sharp,
          duration: theme.transitions.duration.leavingScreen
        }),
        overflowX: 'hidden',
        width: theme.spacing(7) + 1,
        [theme.breakpoints.up('sm')]: {
          width: theme.spacing(9) + 1
        }
      },
      toolbar: {
        display: 'flex',
        alignItems: 'center',
        justifyContent: 'flex-end',
        padding: theme.spacing(0, 1),
        // necessary for content to be below app bar
        ...theme.mixins.toolbar
      },
      content: {
        flexGrow: 1,
        padding: theme.spacing(3)
      }
    })
  )

  export default function MiniDrawer () {
    const classes = useStyles()
    const theme = useTheme()
    const [open, setOpen] = React.useState(true)

    const handleDrawerOpen = () => {
      setOpen(true)
    }

    const handleDrawerClose = () => {
      console.log('close clicked =')
      setOpen(false)
      console.log('open =', open)
    }

    return (
      <div className={classes.root}>
        <CssBaseline />
        <AppBar
          position='fixed'
          className={clsx(classes.appBar, {
            [classes.appBarShift]: open
          })}
        >
          <Toolbar>
            <IconButton
              color='inherit'
              aria-label='open drawer'
              onClick={handleDrawerOpen}
              edge='start'
              className={clsx(classes.menuButton, {
                [classes.hide]: open
              })}
            >
              <MenuIcon />
            </IconButton>
            <Typography variant='h6' noWrap>
              Mini variant drawer
            </Typography>
          </Toolbar>
        </AppBar>
        <Drawer
          variant='permanent'
          className={clsx(classes.drawer, {
            [classes.drawerOpen]: open,
            [classes.drawerClose]: !open
          })}
          classes={{
            paper: clsx({
              [classes.drawerOpen]: open,
              [classes.drawerClose]: !open
            })
          }}
        >
          <div className={classes.toolbar}>
            <IconButton onClick={handleDrawerClose}>
              {theme.direction === 'rtl' ? (
                <ChevronRightIcon />
              ) : (
                <ChevronLeftIcon />
              )}
            </IconButton>
          </div>
          <Divider />
          <List>
            {['Inbox', 'Starred', 'Send email', 'Drafts'].map((text, index) => (
              <ListItem button key={text}>
                <ListItemIcon>
                  {index % 2 === 0 ? <InboxIcon /> : <MailIcon />}
                </ListItemIcon>
                <ListItemText primary={text} />
              </ListItem>
            ))}
          </List>
          <Divider />
          <List>
            {['All mail', 'Trash', 'Spam'].map((text, index) => (
              <ListItem button key={text}>
                <ListItemIcon>
                  {index % 2 === 0 ? <InboxIcon /> : <MailIcon />}
                </ListItemIcon>
                <ListItemText primary={text} />
              </ListItem>
            ))}
          </List>
        </Drawer>
        <main className={classes.content}>
          <div className={classes.toolbar} />
          <Typography paragraph></Typography>
          <Typography paragraph></Typography>
        </main>
      </div>
    )
  }


从“React”导入React
从“clsx”导入clsx
进口{
创建样式,
制作风格,
使用主题,
主题
}来自“@material ui/core/styles”
从“@material ui/core/Drawer”导入抽屉
从“@material ui/core/AppBar”导入AppBar
从“@material ui/core/Toolbar”导入工具栏
从“@material ui/core/List”导入列表
从“@material ui/core/CssBaseline”导入CssBaseline
从“@material ui/core/Typography”导入排版
从“@material ui/core/Divider”导入分隔器
从“@material ui/core/IconButton”导入IconButton
从“@material ui/icons/Menu”导入菜单图标
从“@material ui/icons/ChevronLeft”导入ChevronLeftIcon
从“@material ui/icons/ChevronRight”导入ChevronRightIcon
从“@material ui/core/ListItem”导入ListItem
从“@material ui/core/ListItemIcon”导入ListItemIcon
从“@material ui/core/ListItemText”导入ListItemText
从“@material ui/icons/MoveToInbox”导入收件箱
从“@material ui/icons/Mail”导入MailIcon
常数抽屉宽度=240
const useStyles=makeStyles((主题:主题)=>
创建样式({
根目录:{
显示:“flex”
},
appBar:{
zIndex:theme.zIndex.drawer+1,
背景色:“透明”,
transition:theme.transitions.create(['width','margin']{
放松:主题。过渡。放松。尖锐,
持续时间:theme.transitions.duration.leavingScreen
})
},
appBarShift:{
页边左侧:抽屉宽度,
宽度:`calc(100%-${drawerWidth}px)`,
transition:theme.transitions.create(['width','margin']{
放松:主题。过渡。放松。尖锐,
持续时间:theme.transitions.duration.enteringScreen
})
},
菜单按钮:{
marginRight:36
},
隐藏:{
显示:“无”
},
出票人:{
宽度:抽屉宽度,
flexShrink:0,
空白:“nowrap”
},
抽屉式绳索:{
宽度:抽屉宽度,
transition:theme.transitions.create('width'{
放松:主题。过渡。放松。尖锐,
持续时间:theme.transitions.duration.enteringScreen
})
},
抽屉式:{
transition:theme.transitions.create('width'{
放松:主题。过渡。放松。尖锐,
持续时间:theme.transitions.duration.leavingScreen
}),
溢出x:'隐藏',
宽度:主题。间距(7)+1,
[theme.breakpoints.up('sm'):{
宽度:主题。间距(9)+1
}
},
工具栏:{
显示:“flex”,
对齐项目:“居中”,
justifyContent:“柔性端”,
填充:主题。间距(0,1),
//内容必须位于应用程序栏下方
…theme.mixins.toolbar
},
内容:{
flexGrow:1,
填充:主题。间距(3)
}
})
)
导出默认函数迷你抽屉(){
常量类=useStyles()
const theme=useTheme()
const[open,setOpen]=React.useState(true)
常量handleDrawerOpen=()=>{
setOpen(真)
}
常量handleDrawerClose=()=>{
console.log('单击关闭=')
setOpen(假)
console.log('open=',open)
}
返回(
迷你变型抽屉
{theme.direction==='rtl'(
) : (
)}
{['Inbox','Starred','Send email','Drafts'].map((文本,索引)=>(
{索引%2==0?:}
))}
{['All mail','Trash','Spam'].map((文本,索引)=>(
{索引%2==0?:}
))}
)
}

不能在类组件中使用挂钩。在类中创建一个state属性并使用它

从react文档:

您可以通过五个步骤将功能组件(如时钟)转换为类:

  • 创建一个扩展React.Component的同名ES6类
  • 向其中添加一个名为render()的空方法
  • 将函数体移动到render()方法中
  • 在render()主体中用this.props替换props
  • 删除剩余的空函数声明
类时钟扩展React.Component{
建造师(道具){
超级(道具);
this.state={date:new date()};
}
render(){
返回(
你好,世界!
它是{this.state.date.toLocaleTimeString()}。
);
}
}

我有另一个问题,关于钩子
class Clock extends React.Component {
  constructor(props) {
    super(props);
    this.state = {date: new Date()};
  }

  render() {
    return (
      <div>
        <h1>Hello, world!</h1>
        <h2>It is {this.state.date.toLocaleTimeString()}.</h2>
      </div>
    );
  }
}