到底是什么问题，麻烦老师帮忙看看

这是我的详情：

app.json:

{
    "pages": [
        "pages/index/index",
        "pages/cart/cart",
        "pages/my/my"
    ],
    "window": {
        "backgroundTextStyle": "light",
        "navigationBarBackgroundColor": "#fff",
        "navigationBarTitleText": "慕课",
        "navigationBarTextStyle": "black",
        "enablePullDownRefresh": true
    },
    "tabBar": {
        "selectedColor": "#2B333B",
        "color": "#B7BBBF",
        "list": [
          {
            "pagePath": "pages/index/index",
            "text": "首页",
            "iconPath": "./resource/home.png",
            "selectedIconPath": "./resource/home-active.png"
          },
          {
            "pagePath": "pages/cart/cart",
            "text": "购物车",
            "iconPath": "./resource/cart.png",
            "selectedIconPath": "./resource/cart-active.png"
          },{
            "pagePath": "pages/my/my",
            "text": "我的",
            "iconPath": "./resource/my.png",
            "selectedIconPath": "./resource/my-active.png"
          }
        ]
      },
    "style": "v2",
    "sitemapLocation": "sitemap.json"
}

app.js是空的。

index.js:

// pages/index/index.js
Page({

    /**
     * 页面的初始数据
     */
    data: {
        showIcon:true,
    },
    changeIconShow(e){
        if(e.detail.value){
            this.setData({
                showIcon:false
            })
        }else {
            this.setData({
                showIcon:true
            })
        }
        
    },

    /**
     * 生命周期函数--监听页面加载
     */
    onLoad: function (options) {

    },

    /**
     * 生命周期函数--监听页面初次渲染完成
     */
    onReady: function () {

    },

    /**
     * 生命周期函数--监听页面显示
     */
    onShow: function () {

    },

    /**
     * 生命周期函数--监听页面隐藏
     */
    onHide: function () {

    },

    /**
     * 生命周期函数--监听页面卸载
     */
    onUnload: function () {

    },

    /**
     * 页面相关事件处理函数--监听用户下拉动作
     */
    onPullDownRefresh: function () {

    },

    /**
     * 页面上拉触底事件的处理函数
     */
    onReachBottom: function () {

    },

    /**
     * 用户点击右上角分享
     */
    onShareAppMessage: function () {

    }
})

index.json:

{
  "usingComponents": {}
}

麻烦老师了！