tabbar显示问题

少一张图，只显示按下图片，松开不显示，求助一下。

代码如下

{

  “pages”: [

    “pages/1/1”,

    “pages/2/2”

  ],

  “window”: {

    “backgroundTextStyle”: “light”,

    “navigationBarBackgroundColor”: “#fff”,

    “navigationBarTitleText”: “工人手册”,

    “navigationBarTextStyle”: “black”

  },

  “tabBar”: {

    “list”: [

      {

        “pagePath”: “pages/1/1”, 

        “iocnPath”:“pages/icon/e.png”,

        “selectedIconPath”: “pages/icon/q.png”,

        “text”: “首页”

      },

      {

        “pagePath”: “pages/2/2”,

        “iocnPath”: “pages/icon/q.png”,

        “selectedIconPath”: “pages/icon/w.png”,

        “text”: “关于”

      }

    ],

 “position”: “bottom”

  }

}