import React, { useState } from 'react'; import { LoadingOutlined, PlusOutlined } from '@ant-design/icons'; import { Flex, message, Upload } from 'antd'; import type { GetProp, UploadProps } from 'antd'; type FileType = Parameters>[0]; const getBase64 = (img: FileType, callback: (url: string) => void) => { const reader = new FileReader(); reader.addEventListener('load', () => callback(reader.result as string)); reader.readAsDataURL(img); }; const beforeUpload = (file: FileType) => { const isJpgOrPng = file.type === 'image/jpeg' || file.type === 'image/png'; if (!isJpgOrPng) { message.error('You can only upload JPG/PNG file!'); } const isLt2M = file.size / 1024 / 1024 < 2; if (!isLt2M) { message.error('Image must smaller than 2MB!'); } return isJpgOrPng && isLt2M; }; const App: React.FC = () => { const [loading, setLoading] = useState(false); const [imageUrl, setImageUrl] = useState(); const handleChange: UploadProps['onChange'] = (info) => { if (info.file.status === 'uploading') { setLoading(true); return; } if (info.file.status === 'done') { // Get this url from response in real world. getBase64(info.file.originFileObj as FileType, (url) => { setLoading(false); setImageUrl(url); }); } }; const uploadButton = ( ); return ( {imageUrl ? avatar : uploadButton} {imageUrl ? avatar : uploadButton} ); }; export default App;