applet/edition1.0.0/pages/welcome/welcome.js

// pages/welcome/welcome.js
var app = getApp();
Page({

  /**
   * 页面的初始数据
   */
  data: {
    background: ['https://kx-bigdata.oss-cn-beijing.aliyuncs.com/Applet/step1.png', 'https://kx-bigdata.oss-cn-beijing.aliyuncs.com/Applet/step2.png', 'https://kx-bigdata.oss-cn-beijing.aliyuncs.com/Applet/step3.png?v=1.0.1'],
    indicatorDots: true,
    vertical: false,
    autoplay: false,
    interval: 2000,
    duration: 500
  },

  /**
   * 生命周期函数--监听页面加载
   */
  onLoad: function (options) {
    console.log('welcome',options)
    var _this = this;
    // 查看是否授权
    wx.getSetting({
      success: function(res){
        if (res.authSetting['scope.userInfo']) {
          // 已经授权，可以直接调用 getUserInfo 获取头像昵称
          wx.getUserInfo({
            success:function (e){
              wx.setStorageSync('encryptedData',e.encryptedData)
              wx.setStorageSync('iv',e.iv)
              // 当判断微信未过期后 判断是否授权
              if(!wx.getStorageSync('hasWxLogin')&&!wx.getStorageSync('noneLogin')) {
                var data=app.checkSession()
                console.log(data)
                if(!data) {
                  _this.setData({
                    canIUse: false
                  })
                }
              }else {
              }
            },
            fail:function(err) {
              console.log("获取头像失败")
            }
          })
        }else{
          //未授权
          console.log("未授权")
        }
      }
    })
  },
  // 微信登录
  bindGetUserInfo: function(e) {
    var _this = this;
    wx.getUserInfo({
      success: function(res) {
        console.log(res)
       if(res.iv){//获取授权成功
        wx.setStorageSync('encryptedData',res.encryptedData)//用户加密数据
        wx.setStorageSync('iv',res.iv)//加密算法的初始向量
        wx.showLoading({
          title: '加载中',
        })
        app.login()
       }
      }
    })
  },
  /**
   * 用户点击右上角分享
   */
  onShareAppMessage: function () {

  }
})