效果图

操作步骤： 

1 在app.json找到 pages，增加pages配置地址栏路径，保存后会自动生成相应文件夹；

2，增加  tabBar  参数，“selectedColor” 参数是设置选中后文字的颜色；"list" 中放置导航数据。

     list 中 相关参数： pagePath ----> 指向地址

                                  text   ---->   导航文字

                                  iconPath   ----->  导航图标

                                  selectedIconPath  ----->  选中状态下导航图标         

{
  "pages": [
    "pages/index/index",
    "pages/list/list",
    "pages/mine/mine",
    "pages/logs/logs"
  ],
  "window": {
    "backgroundTextStyle": "light",
    "navigationBarBackgroundColor": "#fff",
    "navigationBarTitleText": "小哲个人商店",
    "navigationBarTextStyle": "black",
    "backgroundColor": "#eeeeee"
  },
  "tabBar": {
    "selectedColor": "#fc5531",
    "list": [
      {
        "pagePath": "pages/index/index",
        "text": "首页",
        "iconPath": "./images/home.png",
        "selectedIconPath": "./images/selected-home.png"
      },
      {
        "pagePath": "pages/list/list",
        "text": "列表",
        "iconPath": "./images/list.png",
        "selectedIconPath": "./images/selected-list.png"
      },
      {
        "pagePath": "pages/mine/mine",
        "text": "我的",
        "iconPath": "./images/mine.png",
        "selectedIconPath": "./images/selected-mine.png"
      }
    ]
  },
  "debug": true,
  "style": "v2",
  "sitemapLocation": "sitemap.json"
}