ant-design/components/upload/demo/picture-card.md

order	title
3	[{zh-CN 照片墙} {en-US Pictures Wall}]

zh-CN

用户可以上传图片并在列表中显示缩略图。当上传照片数到达限制后，上传按钮消失。

en-US

After users upload picture, the thumbnail will be shown in list. The upload button will disappear when count meets limitation.

import { Upload, Modal } from 'antd';
import { PlusOutlined } from '@ant-design/icons';

function getBase64(file) {
  return new Promise((resolve, reject) => {
    const reader = new FileReader();
    reader.readAsDataURL(file);
    reader.onload = () => resolve(reader.result);
    reader.onerror = error => reject(error);
  });
}

class PicturesWall extends React.Component {
  state = {
    previewVisible: false,
    previewImage: '',
    fileList: [
      {
        uid: '-1',
        name: 'image.png',
        status: 'done',
        url: 'https://zos.alipayobjects.com/rmsportal/jkjgkEfvpUPVyRjUImniVslZfWPnJuuZ.png',
      },
      {
        uid: '-2',
        name: 'image.png',
        status: 'done',
        url: 'https://zos.alipayobjects.com/rmsportal/jkjgkEfvpUPVyRjUImniVslZfWPnJuuZ.png',
      },
      {
        uid: '-3',
        name: 'image.png',
        status: 'done',
        url: 'https://zos.alipayobjects.com/rmsportal/jkjgkEfvpUPVyRjUImniVslZfWPnJuuZ.png',
      },
      {
        uid: '-4',
        name: 'image.png',
        status: 'done',
        url: 'https://zos.alipayobjects.com/rmsportal/jkjgkEfvpUPVyRjUImniVslZfWPnJuuZ.png',
      },
      {
        uid: '-5',
        name: 'image.png',
        status: 'error',
      },
    ],
  };

  handleCancel = () => this.setState({ previewVisible: false });

  handlePreview = async file => {
    if (!file.url && !file.preview) {
      file.preview = await getBase64(file.originFileObj);
    }

    this.setState({
      previewImage: file.url || file.preview,
      previewVisible: true,
    });
  };

  handleChange = ({ fileList }) => this.setState({ fileList });

  render() {
    const { previewVisible, previewImage, fileList } = this.state;
    const uploadButton = (
      <div>
        <PlusOutlined />
        <div className="ant-upload-text">Upload</div>
      </div>
    );
    return (
      <div className="clearfix">
        <Upload
          action="https://www.mocky.io/v2/5cc8019d300000980a055e76"
          listType="picture-card"
          fileList={fileList}
          onPreview={this.handlePreview}
          onChange={this.handleChange}
        >
          {fileList.length >= 8 ? null : uploadButton}
        </Upload>
        <Modal visible={previewVisible} footer={null} onCancel={this.handleCancel}>
          <img alt="example" style={{ width: '100%' }} src={previewImage} />
        </Modal>
      </div>
    );
  }
}

ReactDOM.render(<PicturesWall />, mountNode);

/* you can make up upload button and sample style by using stylesheets */
.ant-upload-select-picture-card i {
  color: #999;
  font-size: 32px;
}

.ant-upload-select-picture-card .ant-upload-text {
  margin-top: 8px;
  color: #666;
}