React - Material-UI Accordion：如何居中标题和展开图标

Question

我目前正在我的 React 项目中实现 Material-UI 库的 Accordion 组件：

我想要做的是将手风琴摘要（带有“手风琴 1”、“手风琴 2”的标题）居中，并且下方的展开图标（箭头）也居中。

在 Material-UI 文档 ( https://material-ui.com/components/accordion/ ) 中，显示的布局如下所示：

使用以下代码（如文档中所示）：

import React from 'react';
import { makeStyles } from '@material-ui/core/styles';
import Accordion from '@material-ui/core/Accordion';
import AccordionSummary from '@material-ui/core/AccordionSummary';
import AccordionDetails from '@material-ui/core/AccordionDetails';
import Typography from '@material-ui/core/Typography';
import ExpandMoreIcon from '@material-ui/icons/ExpandMore';

const useStyles = makeStyles((theme) => ({
  root: {
    width: '100%',
  },
  heading: {
    fontSize: theme.typography.pxToRem(15),
    fontWeight: theme.typography.fontWeightRegular,
  },
}));

export default function SimpleAccordion() {
  const classes = useStyles();

  return (
    <div className={classes.root}>
      <Accordion>
        <AccordionSummary
          expandIcon={<ExpandMoreIcon />}
          aria-controls="panel1a-content"
          id="panel1a-header"
        >
          <Typography className={classes.heading}>Accordion 1</Typography>
        </AccordionSummary>
        <AccordionDetails>
          <Typography>
            Lorem ipsum dolor sit amet, consectetur adipiscing elit. Suspendisse malesuada lacus ex,
            sit amet blandit leo lobortis eget.
          </Typography>
        </AccordionDetails>
      </Accordion>
      <Accordion>
        <AccordionSummary
          expandIcon={<ExpandMoreIcon />}
          aria-controls="panel2a-content"
          id="panel2a-header"
        >
          <Typography className={classes.heading}>Accordion 2</Typography>
        </AccordionSummary>
        <AccordionDetails>
          <Typography>
            Lorem ipsum dolor sit amet, consectetur adipiscing elit. Suspendisse malesuada lacus ex,
            sit amet blandit leo lobortis eget.
          </Typography>
        </AccordionDetails>
      </Accordion>
      <Accordion disabled>
        <AccordionSummary
          expandIcon={<ExpandMoreIcon />}
          aria-controls="panel3a-content"
          id="panel3a-header"
        >
          <Typography className={classes.heading}>Disabled Accordion</Typography>
        </AccordionSummary>
      </Accordion>
    </div>
  );
}

谢谢你！

Answer 1

将摘要内容的 flex-grow从 1更改为 0 似乎就足够了：

import { withStyles } from "@material-ui/core/styles";
import MuiAccordionSummary from "@material-ui/core/AccordionSummary";
const AccordionSummary = withStyles({
  content: {
    flexGrow: 0
  }
})(MuiAccordionSummary);

如果您希望箭头位于摘要文本下方的中心（而不是像我的第一个示例中那样位于箭头旁边），那么您可以使用以下命令：

const AccordionSummary = withStyles({
  root: {
    flexDirection: "column"
  },
  content: {
    marginBottom: 0
  },
  expandIcon: {
    marginRight: 0,
    paddingTop: 0
  }
})(MuiAccordionSummary);

第二个示例还演示了使用 SimpleAccordion 的类（按照注释中的要求），使用withStyles代替makeStyles/useStyles作为示例中的附加样式。