How to change icon when accordion summary is expanded?

Issue

I want to change the icon based on whether the accordion is expanded or not.

I see that on the material ui page that the CSS have .Mui-expanded which can see whether expanded={true} or false, but how can I use this to set a different icon when expanded is true or false.

So I want to set IconA if expand is true and IconB if expand is false.

expandIcon={<IconA/>}

Solution

You can use expandIcon prop available for AccordionSummary component. Set condition like this: expandIcon={expanded === 'panel1'?<ExpandMoreIcon />:<Minimize/>}

<Accordion expanded={expanded === 'panel1'} onChange={handleChange('panel1')}>
    <AccordionSummary
      expandIcon={expanded === 'panel1'?<ExpandMoreIcon />:<Minimize/>}
      aria-controls="panel1bh-content"
      id="panel1bh-header"
    >
      <Typography className={classes.heading}>General settings</Typography>
      <Typography className={classes.secondaryHeading}>I am an accordion</Typography>
    </AccordionSummary>
    <AccordionDetails>
      <Typography>
        Nulla facilisi. Phasellus sollicitudin nulla et quam mattis feugiat. Aliquam eget
        maximus est, id dignissim quam.
      </Typography>
    </AccordionDetails>
  </Accordion>

This sample code is taken from docs:https://material-ui.com/components/accordion/#controlled-accordion

Answered By - Murli Prajapati