高阶组件和 Material-UI 的 makeStyles 的样式问题
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【中文标题】高阶组件和 Material-UI 的 makeStyles 的样式问题【英文标题】：Style problems with higher order component & Material-UI's makeStyles 【发布时间】：2020-06-27 17:25:42 【问题描述】：我正在努力避免每个How to style components using makeStyles and still have lifecycle methods in Material UI? 的无效挂钩调用错误。
无法说出我在这里可能做错了什么。类名似乎生成得很好，但样式却不是。请参阅类代码下方的 .RecipeReviewCard-avatar-10 的定义检查器返回。找到完整的可运行示例 here on codesandbox。似乎 makeStyles 没有执行，但是如果我执行 withStyles(styles())(RecipeReviewCard) 我会得到相同的钩子错误。
const styles = makeStyles(theme => (
root:
maxWidth: 345
,
...snipped for brevity...
avatar:
backgroundColor: red[500]
));
class RecipeReviewCard extends React.Component
constructor(props)
super(props);
this.state =
expanded: false,
anchorEl: null,
open: false
;
this.handleExpandClick = this.handleExpandClick.bind(this);
this.handleClickAway = this.handleClickAway.bind(this);
this.onClick = this.onClick.bind(this);
render()
const classes = this.props.classes;
... snipped for brevity...
export default withStyles(styles)(RecipeReviewCard);
.RecipeReviewCard-avatar-10
0: m;
1: a;
2: k;
3: e;
4: S;
5: t;
6: y;
7: l;
8: e;
9: s;
10: -;
11: a;
12: v;
13: a;
14: t;
15: a;
16: r;
17: -;
18: 5;
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【问题讨论】：
【参考方案1】：您的沙盒中有几个主要问题：
您不应该将makeStyles 与withStyles 混用。 makeStyles 只能用于创建要在函数组件中调用的自定义挂钩。只需删除 makeStyles 调用即可。
您应该从 @material-ui/core/styles 而不是从 @material-ui/styles 导入 withStyles，否则它将无法访问默认主题。
这是您的沙盒的工作（至少是样式）版本：
import React from "react";
import withStyles from "@material-ui/core/styles";
import clsx from "clsx";
import Card from "@material-ui/core/Card";
import CardHeader from "@material-ui/core/CardHeader";
import CardContent from "@material-ui/core/CardContent";
import CardActions from "@material-ui/core/CardActions";
import Collapse from "@material-ui/core/Collapse";
import Avatar from "@material-ui/core/Avatar";
import IconButton from "@material-ui/core/IconButton";
import Typography from "@material-ui/core/Typography";
import red from "@material-ui/core/colors";
import FavoriteIcon from "@material-ui/icons/Favorite";
import ShareIcon from "@material-ui/icons/Share";
import ExpandMoreIcon from "@material-ui/icons/ExpandMore";
import MoreVertIcon from "@material-ui/icons/MoreVert";
import Popper from "@material-ui/core/Popper";
import Paper from "@material-ui/core/Paper";
import ClickAwayListener from "@material-ui/core/ClickAwayListener";
import Input, Checkbox from "@progress/kendo-react-inputs";
const styles = theme => (
root:
maxWidth: 345
,
media:
height: 0,
paddingTop: "56.25%" // 16:9
,
expand:
transform: "rotate(0deg)",
marginLeft: "auto",
transition: theme.transitions.create("transform",
duration: theme.transitions.duration.shortest
)
,
expandOpen:
transform: "rotate(180deg)"
,
avatar:
backgroundColor: red[500]
);
class RecipeReviewCard extends React.Component
constructor(props)
super(props);
this.state =
expanded: false,
anchorEl: null,
open: false
;
this.handleExpandClick = this.handleExpandClick.bind(this);
this.handleClickAway = this.handleClickAway.bind(this);
this.onClick = this.onClick.bind(this);
render()
const classes = this.props.classes;
console.log(classes);
const isNew = this.props.isNew || false;
const iconClass = clsx(classes.expand,
[classes.expandOpen]: this.state.expanded
);
return (
<div className="ccard">
<Popper
open=this.state.open
anchorEl=this.state.anchorEl
placement="bottom-end"
transition
>
( TransitionProps ) => (
<Paper>
<Typography className=classes.typography>
Delete?
<br />
Other?
</Typography>
</Paper>
)
</Popper>
<Card className=classes.root>
<CardHeader
avatar=
<Avatar aria-label="recipe" className=classes.avatar>
R
</Avatar>
action=
<ClickAwayListener onClickAway=this.handleClickAway>
<IconButton aria-label="settings" onClick=this.onClick>
<MoreVertIcon />
</IconButton>
</ClickAwayListener>
title="Shrimp and Chorizo Paella"
subheader="September 14, 2016"
/>
<CardContent>
<div className="">
<Input
name="ID"
style= width: "100%"
label="ID*"
pattern="[A-Za-z]+"
minLength=2
required=true
readOnly=!isNew
disabled=!isNew
onChange=this.onChange
value=this.state.id
/>
</div>
<div className="mb-3">
<Input
name="Description"
style= width: "100%"
label="Description"
pattern="[A-Za-z]+"
minLength=2
onChange=e => this.onChange(e, "description")
value=this.state.description
/>
</div>
<div className="mb-3">
<Checkbox
id="chb1"
label="Active"
name="active"
labelPlacement="before"
onChange=e => this.onChange(e, "active")
value=this.state.active
/>
</div>
</CardContent>
<CardActions disableSpacing>
<IconButton aria-label="add to favorites">
<FavoriteIcon />
</IconButton>
<IconButton aria-label="share">
<ShareIcon />
</IconButton>
<IconButton
className=iconClass
onClick=this.handleExpandClick
aria-expanded=this.state.expanded
aria-label="show more"
>
<ExpandMoreIcon />
</IconButton>
</CardActions>
<Collapse in=this.state.expanded timeout="auto" unmountOnExit>
<CardContent>
<Typography paragraph>Method:</Typography>
<Typography paragraph>
Heat 1/2 cup of the broth in a pot until simmering, add saffron
and set aside for 10 minutes.
</Typography>
<Typography paragraph>
Heat oil in a (14- to 16-inch) paella pan or a large, deep
skillet over medium-high heat. Add chicken, shrimp and chorizo,
and cook, stirring occasionally until lightly browned, 6 to 8
minutes. Transfer shrimp to a large plate and set aside, leaving
chicken and chorizo in the pan. Add pimentón, bay leaves,
garlic, tomatoes, onion, salt and pepper, and cook, stirring
often until thickened and fragrant, about 10 minutes. Add
saffron broth and remaining 4 1/2 cups chicken broth; bring to a
boil.
</Typography>
<Typography paragraph>
Add rice and stir very gently to distribute. Top with artichokes
and peppers, and cook without stirring, until most of the liquid
is absorbed, 15 to 18 minutes. Reduce heat to medium-low, add
reserved shrimp and mussels, tucking them down into the rice,
and cook again without stirring, until mussels have opened and
rice is just tender, 5 to 7 minutes more. (Discard any mussels
that don’t open.)
</Typography>
<Typography>
Set aside off of the heat to let rest for 10 minutes, and then
serve.
</Typography>
</CardContent>
</Collapse>
</Card>
</div>
);
handleExpandClick()
this.setState( expanded: !this.state.expanded );
onClick(event)
this.setState(
anchorEl: event.currentTarget,
open: !this.state.open
);
handleClickAway()
this.setState(
open: false
);
onChange()
export default withStyles(styles)(RecipeReviewCard);
相关答案：
How to use theme in styles for custom class components What is the benefit of using withStyles over makeStyles? Material-UI withStyles doesn't apply any kind of styles Cannot import @material-ui/core/styles/MuiThemeProvider【讨论】：
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