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效果图：

参考文档：

Upload 上传 | 我的资料管理-uv-ui 是全面兼容vue3+2、nvue、app、h5、小程序等多端的uni-app生态框架 (uvui.cn)

代码：

<view class="greenBtn_zw2" @click="handleAddGroup">添加班级群</view>

  //添加班级群const handleAddGroup = () => {addDialog.value.open();};

<!-- 添加班级群弹窗 --><uv-popup ref="addDialog" mode="center" :customStyle="dialogStyle2" :closeOnClickOverlay="false"><view class="dialogBG"><view class="dialog-all"><view class="dialog-small-close" @click="cancelRoom"><uv-icon name="close-circle-fill" size="28" color="#B1B1B1"></uv-icon></view><view class="dialog-center"><view class="dialog-title pb-10">班级群</view><view class="diaText">班级群名称</view><uv-input maxlength="10" placeholder="请输入班级群名称" border="surround" clearable v-model="addGroup.info.groupName"></uv-input><view class="diaText statusD">群二维码<view class="gray_s"><text style="margin-right: 38rpx; font-size: 28rpx; color: #555555">状态</text><uv-switch v-model="addGroup.info.status" size="20" activeColor="#287e66" inactive-color="#c0c0c0" asyncChange @change="changeValue"></uv-switch></view></view><view class="m-flex" style="align-items: center"><uv-upload:fileList="fileList"name="fileList":maxCount="1"@afterRead="afterRead"@delete="deletePic"width="360rpx"height="360rpx":customStyle="{ width: '360rpx', height: '360rpx', marginBottom: '40rpx', display: 'flex', alignItems: 'center' }"></uv-upload></view><view class="dialog_footer1 displayFlexSB"><view class="common-sure-btn-1" @click="confirmRoom()">确定</view><view class="common-sure-btn-2" @click="cancelRoom()">取消</view></view></view></view></view></uv-popup>

<script setup lang="ts"> import { onLoad, onShow } from '@dcloudio/uni-app';import { ref, reactive, toRefs, onMounted, defineComponent } from 'vue';import { getFirstPage, getFirstClass, sessionUpdate, sessionCreate, sessionDelete } from '@/apis/vocabulary.ts';  const dialogStyle2 = reactive({ width: '597rpx', height: '855rpx', background: '#FFFFFF', borderRadius: '48rpx' });const addGroup = reactive<object>({ info: { groupName: '', status: true } });const fileList = ref([]);const validateClassForm = () => {if (addGroup.info.groupName == '') {toast.value.show({ message: '请输入班级群名称', success: false });return false;}if (addGroup.info.groupName.trim().length >= 11) {toast.value.show({ message: '班级群名称不能超过10个字符', success: false });return false;}if (fileList.value.length < 1) {toast.value.show({ message: '请上传群二维码', success: false });return false;}return true;};//关闭/取消 弹框按钮方法const cancelRoom = () => {addGroup.info = {groupName: '',status: true};fileList.value = [];addDialog.value.close();};//是否切换switch进行状态推送const changeValue = (e: any) => {uni.showModal({content: e ? `确定要开启${addGroup.info.groupName}吗` : `确定要关闭${addGroup.info.groupName}吗`,success: (res) => {if (res.confirm) {addGroup.info.status = e;console.log('e------', addGroup.info.status);}}});};//图片上传方法//afterRead读取后的处理函数const afterRead = async (event: any) => {// 当设置 multiple 为 true 时, file 为数组格式，否则为对象格式let lists = [].concat(event.file);let fileListLen = fileList.value.length;lists.map((item) => {fileList.value.push({...item,status: 'uploading',message: '上传中'});});for (let i = 0; i < lists.length; i++) {const result = await uploadFilePromise(lists[i].url);// console.log(result, '1111111111111111');let item = fileList.value[fileListLen];fileList.value.splice(fileListLen,1,Object.assign(item, {status: 'success',message: '',url: result ? result : ''}));fileListLen++;}};const uploadFilePromise = (url) => {return new Promise((resolve, reject) => {let a = uni.uploadFile({// url: `${config.baseURL}/zx/common/uploadFile`, // 仅为示例，非真实的接口地址url: 'https://baiduway.baijy.com/zx/common/uploadFile', // 仅为示例，非真实的接口地址filePath: url,name: 'file',// formData: {//   user: 'test'// },header: {Token: uni.getStorageSync('token')},success: (res) => {let result = JSON.parse(res.data);setTimeout(() => {resolve(result.data.fileUrl);}, 1000);}});});};// 删除图片const deletePic = (event: any) => {console.log(event);console.log('fileList.value', fileList.value);console.log('fileList${event.name}', `fileList${event.name}`);// fileList[event.name]fileList.value.splice(event.index, 1);// this[`fileList${event.name}`].splice(event.index, 1);};//确定方法const confirmRoom = () => {if (validateClassForm()) {let obj = {groupName: addGroup.info.groupName,status: addGroup.info.status ? 1 : 0,qrcodeUrl: fileList.value[0].url};addGroupList(obj).then((res: any) => {if (res.success) {toast.value.show({ message: '班级群添加成功', success: true });getclassList();cancelRoom();} else {toast.value.show({ message: res.message, success: false });}});}};</script>