AcidificationModel/pages/Home/Home.js

// pages/Home/Home.js
Page({
  data: {
    selected: 0
  },

  // 页面显示时的逻辑
  onShow: function() {
    // 检查缓存中的登录用户
    const currentUser = wx.getStorageSync('currentUser');
    
    // 如果用户已登录，跳转到 /pages/threshold/threshold 页面
    if (currentUser) {
      wx.switchTab({
        url: '/pages/threshold/threshold'
      });
      return;  // 停止后续代码执行
    }

    // 如果没有登录，则正常显示页面内容
    if (typeof this.getTabBar === 'function' && this.getTabBar()) {
      this.getTabBar().setData({
        selected: 0  // 当前页面在tabBar中的索引
      });
    }

    // 隐藏返回首页按钮
    if (wx.hideHomeButton) {
      wx.hideHomeButton();
    }
  },

  // 其他跳转方法
  SoilPro() {
    wx.navigateTo({
      url: '/shoping/SoilPro/SoilPro'
    });
  },

  Overview: function() {
    wx.navigateTo({
      url: '/shoping/Overview/Overview'
    });
  },

  ResearchFindings() {
    wx.navigateTo({
      url: '/shoping/ResearchFindings/ResearchFindings'
    });
  },

  Unit_Team_Profile() {
    wx.navigateTo({
      url: '/shoping/Unit Team Profile/Unit Team Profile'
    });
  },
  mapView() {
    wx.navigateTo({
      url: '/shoping/mapView/mapView'
    });
  }
});