在app.json文件中添加如下代码：

"tabBar": {

"color": "black",

"backgroundColor":"#fff",

"selectedColor": "#11cd6e",

"borderStyle":"white",

"list": [{

"selectedIconPath": "image/home_HL.png",

"iconPath": "image/home.png",

"pagePath": "pages/index/index",

"text": "首页"

}, {

"selectedIconPath": "image/1168874.png",

"iconPath": "image/dingdan.png",

"pagePath": "pages/logs/logs",

"text": "订单"

}, {

"selectedIconPath": "image/508421.png",

"iconPath": "image/508417.png",

"pagePath": "pages/mine/mine",

"text": "我的"

}]

}

//selectedIconPath:选中时的图片样式

iconPath没选中时的图片

pagePath：跳转的页面链接

backgroundColor：选中时字的颜色