Agency_WxApp/miniprogram/app.js

import {
  wxSetSessionKey
} from "./utils/wxUtils"
App({
  onLaunch: function () {
    const updateManager = wx.getUpdateManager()

    updateManager.onCheckForUpdate(function (res) {
      // 请求完新版本信息的回调
    })

    updateManager.onUpdateReady(function () {
      wx.showModal({
        title: '更新提示',
        content: '新版本已经准备好，是否重启应用？',
        success: function (res) {
          if (res.confirm) {
            // 新的版本已经下载好，调用 applyUpdate 应用新版本并重启
            updateManager.applyUpdate()
          }
        }
      })
    })

    updateManager.onUpdateFailed(function () {
      // 新版本下载失败
    })


    wx.cloud.init({
      traceUser: true
    })
    this.globalData = {
      maintab: 1
    }
  },
  onShow() {
    this.checkEnvVersion()
  },
  checkEnvVersion() {
    let v = wx.getAccountInfoSync()
    let appVersion = wx.getStorageSync('appVersion')
    let {
      envVersion
    } = v.miniProgram
    if (appVersion != envVersion) {
      wx.clearStorage({
        success: (res) => {
          wx.setStorageSync('appVersion', envVersion)
          wx.redirectTo({
            url: '/pages/index/index',
          })
        },
      })
    }
    wxSetSessionKey()
  }
})