【小程序】微信小程序自定义 tabbar以及隐藏有些页面的tabbar

分析：

1. 选中时显示背景和文字，图标变换为选中状态的图标
2. 默认状态下，进入小程序显示的是中间的 “地图”
3. 选中 “预约”时，隐藏tabbar ，且导航栏显示 返回 按钮，点击返回 “地图”

整体目录结构

在 app.json中 配置tabbar 中的 “custom”: true

{  "pages": [    "custom-pages/custom-active/index",    "custom-pages/custom-order/index",    "custom-pages/custom-my/index"  ],  "entryPagePath":  "custom-pages/custom-active/index",  "window": {    "backgroundTextStyle": "light",    "navigationBarBackgroundColor": "#fff",    "navigationBarTitleText": "自定义tabbar",    "navigationBarTextStyle": "black"     },  "tabBar": {    "custom": true,    "list": [      {        "pagePath": "custom-pages/custom-my/index",        "text": "我的",        "iconPath": "/images/tabbar/my.png"      },      {        "pagePath": "custom-pages/custom-active/index",        "text": "活动"      },      {        "pagePath": "custom-pages/custom-order/index",        "text": "预约"      }    ]  },  "usingComponents": {},}

custom-tab-bar为component

用自定义组件的方式编写即可，该自定义组件完全接管 tabBar 的渲染。另外，自定义组件新增 getTabBar 接口，可获取当前页面下的自定义 tabBar 组件实例
在根目录下新建文件夹名为 custom-pages ，存放自定义tabbar的页面
custom-pages
-> custom-active
-> custom-my
-> custom-order

Component({  data: {    // tabbar 的列表     tabbarLists:[      {        pagePath: "/custom-pages/custom-my/index",        text: "我的",        iconPath: "/images/tabbar/my.png",        selectedIconPath: "/images/tabbar/my_active.png"      },      {        pagePath: "/custom-pages/custom-active/index",        text: "地图",        iconPath: "/images/tabbar/map.png",        selectedIconPath: "/images/tabbar/map_active.png"      },      {        pagePath: "/custom-pages/custom-order/index",        text: "预约",        iconPath: "/images/tabbar/order.png",        selectedIconPath: "/images/tabbar/order_active.png"      }    ],    active:null, //设为数字，会产生tabbar闪烁    isShow:true //控制显示隐藏tabbar   },  methods: {    switchTab(e){      const { index,url } = e.currentTarget.dataset;      wx.switchTab({url})    }  }})

<view class="tab-bar" wx:if="{{isShow}}">  <block wx:for="{{tabbarLists}}" wx:key="item">    <view class="tab-bar-item"       data-index="{{index}}"       data-url="{{item.pagePath}}"      bindtap="switchTab"      >           <image class="icon"         src="{{active == index?item.selectedIconPath:item.iconPath}}">image>      <view class="text {{active == index?'active':''}}">{{item.text}}view>          <view wx:if="{{active == index}}" class="bg-item">view>    view>  block>view>

.tab-bar{  height: 48px;  background-color: #ffffff;  display: flex;  border-top: 1rpx solid #f9f9f9;  box-shadow:  0 0 5rpx #f8f8f8;}.tab-bar-item{  display: flex;  flex: 1;  justify-content: center;  align-items: center;  position: relative;}.icon{  width: 27px;  height: 27px;}.text{  font-size: 26rpx;  padding: 0 5rpx;  letter-spacing: 0.1rem;  display: none;}.active{  color: #10B981;  display: block;  font-weight: 800;}.bg-item{  position: absolute;  width: 80%;  top: 15rpx;  bottom: 15rpx;  border-radius: 40rpx;  background-color:rgba(52, 211, 153,0.15);}

一共3个tabbar的page页：custom-active、custom-my、custom-order

custom-active 页 核心代码

Page({  onShow() {    if (typeof this.getTabBar === 'function' &&    this.getTabBar()) {    this.getTabBar().setData({      active: 1    })  }  }})

custom-my 核心代码

Page({  onShow() {    if (typeof this.getTabBar === 'function' &&    this.getTabBar()) {      this.getTabBar().setData({        active: 0      })    }  }})

custom-order

• 该page页要隐藏 tabbar ，所以要将 isShow设置为false;
• 使用 custom-navigator 自定义组件 显示 头部导航

<custom-navigator   title="{{title}}">custom-navigator> 

Page({  data: {    title:"预约"  },  onShow() {    if (typeof this.getTabBar === 'function' &&        this.getTabBar()) {        this.getTabBar().setData({          active: 2,          isShow:false        })    }  }})

{  "usingComponents": {    "custom-navigator":"/components/custom-navigator/custom-navigator"  },  "navigationStyle": "custom"}

custom-navigator 自定义组件

<view class="status">view><view class="navigator">  <view class="icon">    <image        bindtap="gobackTap      class="icon-image" src="/images/back.png">image>  view>  <view class="text">{{title}}view>  <view class="right">view>view>

.status{  height: 20px;}.navigator{  height: 44px;  background-color: #ffffff;   display: flex;  flex-direction: row;  align-items: center;  justify-content: center;}.icon{  width: 40px;  height: inherit;  display: flex;  align-items: center;  justify-content: center;  }.icon-image{  width: 27rpx;  height: 27rpx;  border: 1rpx solid #cccccc;  padding: 8rpx;  border-radius: 20rpx;}.text{  color: #333333;  flex: 1;  text-align: center;  font-size: 28rpx;}.right{  color: #333333;  width: 40px;}

Component({  properties: {    title:{      type:String,      value:""    }  },  methods: {    gobackTap(e){      wx.switchTab({        url: '/custom-pages/custom-active/index',      })    }  }})

来源地址：https://blog.csdn.net/Sonnenlicht77/article/details/130644039