大概思路流程:
1.保存images数组为已选择图片
<view class="gallery"> <view class="item" wx:for="{{images}}" wx:key=""> <image style="width: {{imageWidth}}px; height: {{imageWidth}}px" src=" {{item}}" bindtap="previewImage" mode="aspectFill" /> <!-- 删除按钮 --> <view class="delete" bindtap="delete" data-index="{{index}}"><image style="left: {{imageWidth / 2 - 10}}px;" src="/images/icon_delete.png" /></view> </view> <view class="item"> <image style="width: {{imageWidth}}px; height: {{imageWidth}}px" src="/images/icon_add.png" class="button-upload" bindtap="chooseImage" /> </view></view><button type="primary" bindtap="submit">提交</button> |
const AV = require('../../../utils/av-weapp.js')var that; Page({ data: { images: [], uploadedImages: [], imageWidth: getApp().screenWidth / 4 - 10 }, onLoad: function (options) { that = this; var objectId = options.objectId; console.log(objectId); }, chooseImage: function () { // 选择图片 wx.chooseImage({ sizeType: ['compressed'], sourceType: ['album', 'camera'], // 可以指定来源是相册还是相机,默认二者都有 success: function (res) { // 返回选定照片的本地文件路径列表,tempFilePath可以作为img标签的src属性显示图片 var tempFilePaths = res.tempFilePaths; console.log(tempFilePaths); that.setData({ images: that.data.images.concat(tempFilePaths) }); } }) }, previewImage: function () { // 预览图集 wx.previewImage({ urls: that.data.images }); }, submit: function () { // 提交图片,事先遍历图集数组 that.data.images.forEach(function (tempFilePath) { new AV.File('file-name', { blob: { uri: tempFilePath, }, }).save().then( // file => console.log(file.url()) function(file) { // 先读取 var uploadedImages = that.data.uploadedImages; uploadedImages.push(file.url()); // 再写入 that.setData({ uploadedImages: uploadedImages }); console.log(uploadedImages); } ).catch(console.error); }); wx.showToast({ title: '评价成功', success: function () { wx.navigateBack(); } }); }, delete: function (e) { var index = e.currentTarget.dataset.index; var images = that.data.images; images.splice(index, 1); that.setData({ images: images }); } }) |
前端样式 wxcss:
/*画廊*/.gallery { /*margin-bottom: 100rpx;*/ display: flex; justify-content: flex-start; flex-wrap: wrap; }/*每张图片所占容器*/.item { position: relative; margin: 5px; }/*删除按钮*/.delete { position: absolute; height: 20px; bottom: 0; width: 100%; background: #ccc; opacity: .8; }.delete image { position: absolute; width: 20px; height: 20px; } |
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