原生小程序 长按保存图片

程序 长按保存图片"/>

原生小程序 长按保存图片

.wxml

longpress:手指触摸后，超过350ms再离开，如果指定了事件回调函数并触发了这个事件，tap事件将不被触发

<view class="poster"><image src="{{poster}}" bindlongpress="saveImage" data-url="{{poster}}"></image></view>

.js

// 长按保存功能--授权部分saveImage(e) {let _this = thiswx.showActionSheet({ //显示操作菜单itemList: ['保存到相册'],success(res) {let url = e.currentTarget.dataset.url;wx.getSetting({success: (res) => {if (!res.authSetting['scope.writePhotosAlbum']) { //判断是否授权wx.authorize({ //如果没授权，则向用户发起授权请求scope: 'scope.writePhotosAlbum',success: () => {// 同意授权_this.saveImgInner(url);},fail: (res) => {console.log(res);wx.showModal({title: '保存失败',content: '请开启访问手机相册权限',success(res) {wx.openSetting()}})}})} else {// 已经授权了_this.saveImgInner(url);}},fail: (res) => {console.log(res);}})},fail(res) {console.log(res.errMsg)}})},// 长按保存功能--保存部分saveImgInner(url) {wx.getImageInfo({src: url,success: (res) => {let path = res.path;wx.saveImageToPhotosAlbum({filePath: path,success: (res) => {console.log(res);wx.showToast({title: '已保存到相册',})},fail: (res) => {console.log(res);wx.showToast({title: '保存失败',})}})},fail: (res) => {console.log(res);wx.showToast({title: '保存失败',})}})},

注：获取网络图片信息时，网络图片的域名一定要配置好