【微信小程序开发（9）---主界面 导航设置】

app.json中已经配置

{
"pages":[
 "pages/index/index",
    "pages/life/life",
    "pages/search/search",
    "pages/car/car",
    "pages/mine/mine",
    "pages/logs/logs"
],
 "window":{
    "backgroundTextStyle":"dark",
    "navigationBarBackgroundColor": "#0094ff",
    "navigationBarTitleText": "我的应用",
    "navigationBarTextStyle":"white",
    "enablePullDownRefresh":true,
    "backgroundColor":"#F5F5F5"
  },
  "tabBar": {
  "list": [
    {
    "pagePath":  "pages/index/index",
    "text": "首页",
    "iconPath": "icon/_home.png",
    "selectedIconPath": "icon/home.png"
  },
  {
    "pagePath":  "pages/life/life",
    "text": "直播",
    "iconPath": "icon/_videocamera.png",