//app.js
App({
  onLaunch: function () {
    
    // 登录
    wx.login({
      success: res => {        
        
        if (this.globalData.pageObject.index.setData) {
          this.globalData.pageObject.index.setData({
            test: true
          })
        }
        
      }
    })
  },
  globalData: {
    pageObject:{}
  }
})

//index.js
//获取应用实例
const app = getApp()

Page({
  data: {
            test:false
    
  },
  onLoad: function () {
    console.log("onLoad")
    app.globalData.pageObject.index = this
  }
})

<!--index.wxml-->
<view class="container">
  
 <view class="login-zone" wx:if="{{!test}}">
    测试...
  </view>

  
</view>

app.globalData.pageObject.index = this

       if (this.globalData.pageObject.index.setData) {
          this.globalData.pageObject.index.setData({
            test: true
          })
        }