Image on Material UI CardMedia

问题

I´m having some troubles on getting an image from props on a CardMedia image:

<Card className={classes.card}>
    <CardMedia 
        className={classes.img}
        image={this.props.recipe.thumbnail}
    />
    <CardContent className={classes.content}>
        <Typography gutterBottom variant="headline" component="h2">
            {this.props.recipe.title}
        </Typography>
        <Typography component="p">
            {this.props.recipe.ingredients}
        </Typography>
    </CardContent>
    <CardActions>
        <Button 
            href={this.props.recipe.href}
            Recipe
        </Button> 
    </CardActions>
</Card>

It just doesnt render at all the images; all the other props values are rendered as they has to. Also as Material UI I had specified the CardMedia height on a JS css.

Does anyone knows why this happens?

回答1:

Ok ,Had the Same Issue . Finally Got it Working .

const styles = 
{

media: {
  height: 0,
  paddingTop: '56.25%', // 16:9,
  marginTop:'30'
}
  };


 <CardMedia
      className={classes.media}
      ***image={require('assets/img/bg2.jpg')}***
      title="Contemplative Reptile"
      **style={styles.media}**
    />

You can also check : https://codesandbox.io/s/9zqr09zqjo - No option to load images . The image location is my local

回答2:

I have read the docs and also notice that you have to specify the height to display images. While they say you should create a component with style I feel that a simpler way of doing it is by using the style prop directly:

<CardMedia
  style={{height: 0, paddingTop: '56.25%'}}
  image={project.image}
  title="lorem ipsum"
/>

The other options would be to create a style object first and then render the component withStyle as the docs said:

const styles = {
  card: {
    maxWidth: 345,
  },
  media: {
    height: 0,
    paddingTop: '56.25%', // 16:9
  },
};

function SimpleMediaCard(props) {
  const { classes } = props;
  return (
    <div>
      <Card className={classes.card}>
        <CardMedia
          className={classes.media}
          image="/static/images/cards/contemplative-reptile.jpg"
          title="Contemplative Reptile"
        />
      </Card>
    </div>
  );
}

export default withStyles(styles)(SimpleMediaCard);

回答3:

I was facing the same issue. A good workaround would be to use the 'img' element along with the 'src' attribute inside the CardMedia body instead of passing it as an attribute to the CardMedia.

<CardMedia>
 <img src={this.props.recipe.thumbnail} alt="recipe thumbnail"/>
</CardMedia>

And while passing the props to the class I sent the image path as an object. In your case, suppose recipe is an object with thumbnail as one of the attributes. Then in the parent class, I would write the prop as:

...
recipe = {
  .
  .
  thumbnail: require('assets/images/img1.jpg'),
  //make sure the path of the image is relative to parent class where you are defining the prop 
  .
  .
}
...

Here I am sending the path of the image as an object. This worked for me.

回答4:

to set fallback image on CardMedia, you can try this:

import FALLBACK_IMAGE from 'src/assets/images/fallback_image.png';

const onMediaFallback = event => event.target.src = FALLBACK_IMAGE;
<CardMedia
 component="img"
 className={classes.media}
 image="/static/images/cards/contemplative-reptile.jpg"
 title="Contemplative Reptile"
 onError={onMediaFallback}
/>

来源：https://stackoverflow.com/questions/50272814/image-on-material-ui-cardmedia

标签

reactjs

material-ui