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關于微信小程序自定義tabbar問題詳析

 更新時間：2022年04月02日 11:41:03   作者：貓尾巴  
微信小程序是一種全新的連接用戶與服務的方式,它可以在微信內被便捷地獲取和傳播,同時具有出色的使用體驗,下面這篇文章主要給大家介紹了關于微信小程序自定義tabbar問題的相關資料,需要的朋友可以參考下

1、首先按照官方組件在app.json中定義tabbar

"tabBar": {
    "custom": true,
    "backgroundColor": "#FFFFFF",
    "borderStyle": "white",
    "list": [
      {
        "pagePath": "pages/index/index",
        "text": "首頁",
        "iconPath": "./images/home.png",
        "selectedIconPath": "./images/home.png"
      },
      {
        "pagePath": "pages/me/me",
        "text": "個人中心",
        "iconPath": "./images/me.png",
        "selectedIconPath": "./images/me.png"
      }
    ]
  },
"usingComponents": {}

2、在項目根目錄創(chuàng)建自定義tabbar組件

劃重點：根目錄，請看下圖，不放根目錄會導致this.getTabBar = null

3、組件內容如下：

  • custom-tab-bar/index.js
Component({
  data: {
    selected: 0,
    color: "#7A7E83",
    selectedColor: "#3cc51f",
    list: [{
      pagePath: "../../pages/index/index",
      iconPath: "../images/home.png",
      selectedIconPath: "../images/home.png",
      text: "首頁"
    }, {
      pagePath: "../../pages/me/me",
      iconPath: "../images/me.png",
      selectedIconPath: "../images/me.png",
      text: "個人中心"
    }]
  },
  attached() {
  },
  methods: {
    switchTab(e) {
      const data = e.currentTarget.dataset
      const url = data.path
      wx.switchTab({url})
      this.setData({
        selected: data.index
      })
    }
  }
})
  • custom-tab-bar/index.json
{
  "component": true
}
  • custom-tab-bar/index.wxml
<cover-view class="tab-bar">
  <cover-view class="tab-bar-border"></cover-view>
  <cover-view wx:for="{{list}}" wx:key="index" class="tab-bar-item" data-path="{{item.pagePath}}" data-index="{{index}}" bindtap="switchTab">
    <cover-image src="{{selected === index ? item.selectedIconPath : item.iconPath}}"></cover-image>
    <cover-view style="color: {{selected === index ? selectedColor : color}}">{{item.text}}</cover-view>
  </cover-view>
</cover-view>
  • custom-tab-bar/index.wxss
.tab-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 48px;
  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: 1px;
  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: 27px;
  height: 27px;
}

.tab-bar-item cover-view {
  font-size: 10px;
}

4、在pages下的各個頁面組件引入tabbar

以首頁舉例：

  • pages/index.json
{
  "usingComponents": {
    "custom-tab-bar": "../../custom-tab-bar/index"
  }
}
  • pages/index.js
Page({
  onShow: function () {
    if (typeof this.getTabBar === 'function' && this.getTabBar()) {
      this.getTabBar().setData({
        selected: 0
      })
    }
  }
})
  • pages/index.wxml
<view class="container">
  <custom-tab-bar></custom-tab-bar>
</view>

總結

到此這篇關于關于微信小程序自定義tabbar問題的文章就介紹到這了,更多相關微信小程序自定義tabbar內容請搜索腳本之家以前的文章或繼續(xù)瀏覽下面的相關文章希望大家以后多多支持腳本之家！

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