Question

我正在努力避免每个How to style components using makeStyles and still have lifecycle methods in Material UI?出现无效的挂接调用错误。

在这里无法说出我可能做错了什么。类名似乎生成得很好，但是样式却不是。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)，我会收到相同的钩子错误。

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;

感谢帮助

Answer 1

您的沙箱中存在几个主要问题：

您不应该将makeStyles与withStyles混合使用。 makeStyles仅应用于创建要在函数组件中调用的自定义钩子。只需删除makeStyles通话即可。
您应该从withStyles而不是从@material-ui/core/styles导入@material-ui/styles，否则它将无法访问默认主题。

以下是您的沙盒的有效版本（至少是样式）：

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);

高阶组件和Material-UI的makeStyles的样式问题

1 个答案: