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小程序如何获取群聊的openGid以及名称
发布时间:2020-10-15背景：由于公司可能需要在微信群里面使用打卡功能，因此做了个技术调研。
方案：微信在更新分享接口后，原有的在onShareAppMessage中直接拿shareTicket已不复存在。根据最新文档显示，需要在App.onLaunch()跟App.onShow()中获取。
Demo核心代码：
index.js
Page({
/**
* 页面的初始数据
*/
data: {
openGid: ''
},
/**
* 生命周期函数--监听页面加载
*/
onLoad: function (options) {
let that = this
wx.showShareMenu({
withShareTicket: true
})
app.getShareTiket(function (globalData) {
console.log('clickReload---globalData-->' + JSON.stringify(globalData))
that.setData({
openGid: globalData.openGid
})
})
},
clickReload: function () {
let that = this
app.getShareTiket(function (globalData) {
console.log('clickReload---globalData-->' + JSON.stringify(globalData))
that.setData({
openGid: globalData.openGid
})
})
}
})
index.wxml
<!--index.wxml-->
<view wx:if="{{openGid}}" class='groupName'>
群名称：<open-data type="groupName" open-gid="{{openGid}}"></open-data>
</view>
<view wx:else>
<button bindtap='clickReload'>点击加载群名称</button>
</view>
<view>{{openGid ? openGid : '无'}}</view>
app.js
//app.js
App({
globalData: {
shareTicket: '',
openGid: ''
},
onLaunch: function (options) {
},
onShow: function (options) {
let that = this
if (options && options.scene == 1044) {
that.globalData.shareTicket = options.shareTicket
}
console.log('onShow---options=--->' + JSON.stringify(options))
},
getShareTiket: function (cb) {
let that = this
// 展示本地存储能力
if (that.globalData.shareTicket) {
wx.getShareInfo({
shareTicket: that.globalData.shareTicket,
success: function (res) {
console.log('getShareTiket---shareTicket-->' + JSON.stringify(res))
let js_encryptedData = res.encryptedData
let js_iv = res.iv
wx.login({
success: function (res) {
let js_code = res.code
console.log('code-->' + js_code)
wx.request({
url: 'xxxxxxxx',
method: 'POST',
data: {
code: js_code,
appId: 'xxxxx',
encryptedData: js_encryptedData,
iv: js_iv
},
success: function (res) {
that.globalData.openGid = res.data.openGId
console.log('getShareTiket---openGid' + that.globalData.openGid)
typeof cb == "function" && cb(that.globalData)
},
fail: function (err) {
console.log('getShareTiket---err' + JSON.stringify(err))
}
})
}
})
}
})
} else {
console.log('不存在shareTicket')
}
}
})
注意事项
1：必须调用这个接口wx.showShareMenu({withShareTicket: true})，否则在App.onLaunch()跟App.onShow()时，你拿不到shareTicket.
