vivo应用商店下载安装,建站seo赚钱,太仓市住房和建设局网站,青岛网络服务公司背景#xff1a;点击图标#xff0c;生成海报后#xff0c;点击保存相册#xff0c;可以保存
生成海报#xff1a;插件wxa-plugin-canvas#xff0c;此处使用页面异步生成组件方式#xff0c;官网地址#xff1a;wxa-plugin-canvas - npm
二维码#xff1a;调用后端…背景点击图标生成海报后点击保存相册可以保存
生成海报插件wxa-plugin-canvas此处使用页面异步生成组件方式官网地址wxa-plugin-canvas - npm
二维码调用后端接口生成二维码
1.二维码按钮 !-- 二维码按钮 --view classitem bindtaponCreatePostervan-icon namescan size20px /view classicon-title二维码/view/view
2.二维码海报显示图层 !-- 二维码海报注意布局要和其他元素独立 --
view bindtapclosePoster!-- 一定要设置元素的idposter --poster idposter config{{posterConfig}} bind:successonPosterSuccess bind:failonPosterFail/posterview wx:if{{posterShow}} classpopup-mask/viewview wx:if{{posterShow}} classposterImg-boximage modewidthFix classposterImg src{{posterImg}}/imageview classbtn-create data-pic{{basicInfo.pic}} catchtapsavePosterPic保存到相册/view/view
/view
3.点击按钮后异步生成海报
需要调用获取图片信息接口wx.getImageInfo()获取到图片的宽高以做整体宽高配置 /*** 异步生成海报*/async onCreatePoster() {console.log(异步生成海报);// 获取二维码信息(实质是后端生成的一张二维码图片)const qrRes await createQRCode({id: this.data.basicInfo.id});console.log(qrRes,qrRes);// 获取图片信息,图片获取成功后调用方法生成海报const pic this.data.basicInfo.pic;wx.getImageInfo({src: pic,success:(res) {console.log(res.width)// console.log(res.height)const height 490 * res.height / res.width// setData配置数据数据配置完成后生成海报this.createPosterDone(height, qrRes.data);}})},createPosterDone(picHeight,qrCode){const _this thisconst _baseHeight 74 (picHeight 120)this.setData({posterConfig: {// 海报总宽高width: 750,height: picHeight 660,backgroundColor: #fff,debug: false,// 图片所在容器起始位置宽高等配置blocks: [{x: 76,y: 74,width: 604,height: picHeight 120,borderWidth: 2,borderColor: #c2aa85,borderRadius: 8}],// 图片配置images: [{x: 133,y: 133,url: _this.data.goodsInfoList.basicInfo.pic, // 商品图片width: 490,height: picHeight},{x: 76,y: _baseHeight 199,url: qrCode, // 二维码width: 222,height: 222}],// 文字信息商品标题、价格、二维码处文字texts: [{x: 375,y: _baseHeight 80,width: 650,lineNum: 2,text: _this.data.goodsInfoList.basicInfo.name,textAlign: center,fontSize: 40,color: #333},{x: 375,y: _baseHeight 180,text: _this.data.goodsInfoList.basicInfo.minPrice,textAlign: center,fontSize: 50,color: #e64340},{x: 352,y: _baseHeight 320,text: 长按识别小程序码,fontSize: 28,color: #999}],}}, () {Poster.create(this.data.posterConfig, this);});},
4.海报生成成功后将海报数据海报临时路径和是否显示海报层存放到data中
data:{// 二维码海报配置posterConfig:{},// poster显示标识posterShow: false,// 保存到相册的图片posterImg:
},onPosterSuccess(e){console.log(二维码生成成功);this.setData({posterImg: e.detail,posterShow: true})},
5.点击海报任何位置除了保存到相册按钮隐藏海报层
closePoster方法绑定到最外层
保存按钮使用catchbind阻止冒泡即可防止点击保存时也会关掉海报层
!-- 二维码海报注意布局要和其他元素独立 --
view bindtapclosePoster!-- 一定要设置元素的idposter --poster idposter config{{posterConfig}} bind:successonPosterSuccess bind:failonPosterFail/posterview wx:if{{posterShow}} classpopup-mask/viewview wx:if{{posterShow}} classposterImg-boximage modewidthFix classposterImg src{{posterImg}}/imageview classbtn-create data-pic{{basicInfo.pic}} catchtapsavePosterPic保存到相册/view/view
/view // 关闭海报closePoster(){this.setData({posterShow: false})},
6.点击保存到相册按钮调用wx.saveImageToPhotosAlbum()方法保存图片到本地
注意wx.saveImageToPhotosAlbum()方法的参数filePath不能是绝对路径或者网络图片必须是临时图片。所以在生成海报成功后需要将图片保存到data的posterImg中保存时用这个就可以了
// 保存海报到相册savePosterPic(e){console.log(保存到相册,e);console.log(this.data.posterImg);//http://tmp/xlHB02MBJ50H9887bf9a40b5b5dc24b904e4132afcb0.pngwx.saveImageToPhotosAlbum({// 不能直接使用this.data.basicInfo.pic的图片// saveImageToPhotosAlbum:fail https://file.winwebedu.com/mall/collage-01.jpg not absolute pathfilePath: this.data.posterImg,success(res) { wx.showToast({title: 保存成功,})},fail(err){console.log(err);wx.showToast({title: 保存失败,})},// 无论成功与否关闭海报complete(){this.setData({posterShow: false});}})},
7.补充如果要直接生成二维码不使用异步
poster classwxcode-box idposter config{{posterConfig}} bind:successonPosterSuccess bind:failonPosterFail/posteronPosterSuccess(e){// console.log(二维码生成成功);const { detail } e;console.log(detail);wx.previewImage({current: detail,urls: [detail]})},posterConfig配置jdConfig: {width: 750,height: 1334,backgroundColor: #fff,debug: false,pixelRatio: 1,blocks: [{width: 690,height: 808,x: 30,y: 183,borderWidth: 2,borderColor: #f0c2a0,borderRadius: 20,},{width: 634,height: 74,x: 59,y: 770,backgroundColor: #fff,opacity: 0.5,zIndex: 100,},],texts: [{x: 113,y: 61,baseLine: middle,text: 伟仔,fontSize: 32,color: #8d8d8d,},{x: 30,y: 113,baseLine: top,text: 发现一个好物推荐给你呀,fontSize: 38,color: #080808,},{x: 92,y: 810,fontSize: 38,baseLine: middle,text: 标题标题标题标题标题标题标题标题标题,width: 570,lineNum: 1,color: #8d8d8d,zIndex: 200,},{x: 59,y: 895,baseLine: middle,text: [{text: 2人拼,fontSize: 28,color: #ec1731,},{text: ¥99,fontSize: 36,color: #ec1731,marginLeft: 30,}]},{x: 522,y: 895,baseLine: middle,text: 已拼2件,fontSize: 28,color: #929292,},{x: 59,y: 945,baseLine: middle,text: [{text: 商家发货售后,fontSize: 28,color: #929292,},{text: 七天退货,fontSize: 28,color: #929292,marginLeft: 50,},{text: 运费险,fontSize: 28,color: #929292,marginLeft: 50,},]},{x: 360,y: 1065,baseLine: top,text: 长按识别小程序码,fontSize: 38,color: #080808,},{x: 360,y: 1123,baseLine: top,text: 超值好货一起拼,fontSize: 28,color: #929292,},],images: [{width: 62,height: 62,x: 30,y: 30,borderRadius: 62,url: https://img.yzcdn.cn/vant/cat.jpeg,},{width: 634,height: 634,x: 59,y: 210,url: https://b.yzcdn.cn/vant/icon-demo-1126.png,},{width: 220,height: 220,x: 92,y: 1020,url: https://img.yzcdn.cn/vant/cat.jpeg,},{width: 750,height: 90,x: 0,y: 1244,url: https://b.yzcdn.cn/vant/icon-demo-1126.png,}]},
