微信小程序tabBar显示问题

Question

微信小程序中自带tabbar，我在app.json中配置了4个tabBar
类似如下
"tabBar": {

    "color": "#9FB9BA",
    "selectedColor": "#00AAA8",
    "backgroundColor": "#1F2346",
    "borderStyle": "white",
    "position": "bottom",
    "list": [{
        "pagePath": "pages/exhibition/exhibition",
        "text": "1",
        "iconPath": "images/exhibition-white.png",
        "selectedIconPath": "images/exhibition-active.png"
    }, {
        "pagePath": "pages/museum/museum",
        "text": "2",
        "iconPath": "images/museum-white.png",
        "selectedIconPath": "images/museum-active.png"
    }, {
        "pagePath": "pages/spreadtrum/spreadtrum",
        "text": "3",
        "iconPath": "images/spreadtrum-white.png",
        "selectedIconPath": "images/spreadtrum-active.png"
    }, {
        "pagePath": "pages/mine/mine",
        "text": "4",
        "iconPath": "images/mine-white.png",
        "selectedIconPath": "images/mine-active.png"
    }]
}
但是显示出来缺和其他的小程序差很多，图片一律81X81的

请问是哪里写错了吗，或者能否外部调试导航样式，想要间距大一点，图片小一点

Answer 1

图片是81*81 但是图片的留白是不一样的，

参考这张来调整图片大小

Answer 2

无法定制，你可以做的就是把图片周围留白，这样图片看起来就小了，和文字也有了距离