分享点击二维码下载到手机功能

downloadCode() {

 let that = this

 // #ifdef H5

 var canvas = document.getElementById("hah").getElementsByTagName("canvas")

 var imgURL = canvas[0].toDataURL("image/png")

 var dlLink = document.createElement('a');

 dlLink.download = "店员推广码";

 dlLink.href = imgURL;

 dlLink.dataset.downloadurl = ["image/png", dlLink.download, dlLink.href].join(':');

 document.body.appendChild(dlLink);

 dlLink.click();

 document.body.removeChild(dlLink);

 // #endif

 // #ifdef MP

 uni.downloadFile({  

  url: that.extension.code,

  success: (res) => {

  if (res.statusCode === 200) {

uni.saveImageToPhotosAlbum({

filePath: res.tempFilePath,

success: function(res) {

that.$util.Tips({

title: '保存成功',

icon: 'success'

});

},

fail: function(res) {

console.log(res)

that.$util.Tips({

title: '保存失败'

});

}

});

  }

  }

 });

 // #endif

 // #ifdef APP-PLUS

 uni.saveImageToPhotosAlbum({

  filePath: that.codeImg,

  success: function(res) {

  that.$util.Tips({

  title: '保存成功',

  icon: 'success'

  });

  },

  fail: function(res) {

  that.$util.Tips({

  title: '保存失败'

  });

  }

 });

 // #endif

},