添加底部导航栏tabbar

效果图：

如果要添加底部导航栏，最少2个，最多5个。

app.json

{
  "pages": [
    "pages/index/index",
    "pages/userConsole/userConsole",
    "pages/storageConsole/storageConsole",
    "pages/databaseGuide/databaseGuide",
    "pages/addFunction/addFunction",
    "pages/deployFunctions/deployFunctions",
    "pages/chooseLib/chooseLib",
    "pages/openapi/openapi",
    "pages/openapi/serverapi/serverapi",
    "pages/openapi/callback/callback",
    "pages/openapi/cloudid/cloudid",
    "pages/im/im",
    "pages/im/room/room"
  ],
  "window": {
    "backgroundColor": "#ddd",
    "backgroundTextStyle": "light",
    "navigationBarBackgroundColor": "#F6F6F6",
    "navigationBarTitleText": "我的微信",
    "navigationBarTextStyle": "black",
    "enablePullDownRefresh": true
  },
  "sitemapLocation": "sitemap.json",
  "style": "v2",
  "tabBar": {
    "selectedColor": "#00ff00",
    "borderStyle": "black",
    "list": [
      {
        "pagePath": "pages/index/index",
        "text": "首页",
        "iconPath": "images/2.jpg",
        "selectedIconPath": "images/1.jpg"
      },
      {
        "pagePath": "pages/im/im",
        "text": "日志",
        "iconPath": "images/4.jpg",
        "selectedIconPath": "images/3.jpg"
      }
  ]
  },
  "networkTimeout": {
    "request": 20000,
    "connectSocket": 20000,
    "uploadFile": 20000,
    "downloadFile": 20000
  },
  "debug":true

}

tabBar就是底部导航栏：

• selectedColor：被选中时显示的颜色
• borderStyle：导航栏与页面的边界，就是那个分隔线，当为white时，分隔线就看不见了。
• pagePath：跳转页面的路径
• text：显示文本
• iconPath：导航图标路径
• selectedIconPath：当选中时导航图标路径

networkTimeout是延时，单位是ms

debug是开启debug模式，这样在调试窗口可以看到具体的跳转信息等。