ext.josn设置了底部菜单tabBar，结果开发环境里面预览，app.json和ext.json都是失效了，没有了底部菜单显示出来

{

“extEnable”: true,

“extAppid”: “wx9f16a3650bbd4c0d”,

“ext”: {

“teamId”: “3”,

“appid”: “wx9f16a3650bbd4c0d”

}

,“window”: {

“backgroundTextStyle”: “light”,

“navigationBarBackgroundColor”: “#D94C42”,

“navigationBarTitleText”: “臻品小栈”,

“navigationBarTextStyle”: “white”,

“enablePullDownRefresh”: true

},

“tabBar”: {

“list”: [

{

“pagePath”: “pages/shop/home”,

“text”: “小栈”,

“iconPath”: “images/product-w.png”,

“selectedIconPath”: “images/product.png”

},

{

“pagePath”: “pages/shop/case”,

“text”: “案例”,

“iconPath”: “images/case-w.png”,

“selectedIconPath”: “images/case.png”

},

{

“pagePath”: “pages/shop/collocation”,

“text”: “搭配”,

“iconPath”: “images/collocation-w.png”,

“selectedIconPath”: “images/collocation.png”

},

{

“pagePath”: “pages/shop/user”,

“text”: “订单”,

“iconPath”: “images/my-w.png”,

“selectedIconPath”: “images/my.png”

}

]

}

}