saveimg:function(){

var codeurl = this.data.codeurl

codeurl='https:'+codeurl

wx.showLoading({

title: '正在保存...',

})

console.log(codeurl,'这里的codeurl是https://image.yzgcw.com/QR/1565020674834.png')

wx.getSetting({

success(res) {

if (!res.authSetting['scope.writePhotosAlbum']) {

wx.authorize({

scope: 'scope.writePhotosAlbum',

success() {

console.log(111)

wx.downloadFile({

url: codeurl,

success: function (res) {

console.log(222)

let path = res.tempFilePath

wx.saveImageToPhotosAlbum({

filePath: path,

success: function (res) {

wx.hideLoading()

console.log(222)

wx.showToast({

title: '保存成功',

})

},

complete: function (res) {

wx.hideLoading()

}

})

}

})

}

})

}else{

console.log(444)

wx.downloadFile({

url:codeurl,

success:function(res){

console.log(555)

let path = res.tempFilePath

console.log(path)

wx.saveImageToPhotosAlbum({

filePath: path,

success: function (res) {

wx.hideLoading()

console.log(666)

wx.showToast({

title: '保存成功',

})

},

complete: function (res) {

console.log(res)

wx.hideLoading()

}

})

}

})

}

}

})

}