小程序自定义底部导航。。。干货。。。custom-tab-bar得使用原创

1、首先 app.json文件 找到 tabBar 添加 “custom”: true 打开自定义tabBar

2，在根目录下新建custom-tab-bar目录 新建index(Component组件)**必须是index命名

2.1 wxml 文件

  
  
    
    {{item.text}}
  

2.2 wxss文件

.tab-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  padding-top: 20rpx;
  background: white;
  display: flex;
  padding-bottom: env(safe-area-inset-bottom);
}

.tab-bar-border {
  background-color: rgba(0, 0, 0, 0.33);
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 2rpx;
  transform: scaleY(0.5);
}

.tab-bar-item {
  flex: 1;
  text-align: center;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
}

.tab-bar-item cover-image {
  width: 54rpx;
  height: 54rpx;
  margin-bottom: 10rpx;
}

.tab-bar-item cover-view {
  font-size: 20rpx;
}

2.3 js文件

Component({
  data: {
    selected: 0,
    color: "#7A7E83",
    selectedColor: "#cf000e",
    "list": [
      {
        "pagePath": "/pages/index/index",
        "text": "首页",
        "iconPath": "/img/home.png",
        "selectedIconPath": "/img/home_on.png"
      },
      {
        "pagePath": "/pages/category/category",
        "text": "分类",
        "iconPath": "/img/sort.png",
        "selectedIconPath": "/img/sort_on.png"
      },
      {
        "pagePath": "/pages/shoppingcart/tabBarCart",
        "text": "购物车",
        "iconPath": "/img/cart.png",
        "selectedIconPath": "/img/cart_on.png"
      },
      {
        "pagePath": "/pages/mine/mine",
        "text": "我的",
        "iconPath": "/img/my.png",
        "selectedIconPath": "/img/my_on.png"
      }
    ]
  },
  onshow() {
    console.log(onshow.....)
  },
  methods: {
    switchTab(e) {
      const data = e.currentTarget.dataset
      console.log(data)
      const url = data.path
      wx.switchTab({ url })
      console.log(e)
      this.setData({
        selected: data.index
      })
    }
  }
})

2.4 json文件

{
  "component": true
}

3.使用~