微信小程序自定义tabBar组件开发详解

本文实例为大家分享了微信小程序自定义tabbar组件的具体代码，供大家参考，具体内容如下

以下代码保存在

先看一看目录

 

template文件夹里存放tabbar模板。
template/template.wxml

<template name="tabbar">
<view class="tabbar">
 <block wx:for="{{tabbar}}" wx:for-item="item" wx:key="tabbar">
 <view class="tabbar-item">
  <navigator open-type="redirect" url="{{item.pagepath}}">
  <view><image class="icon" src='{{item.iconpath}}'></image></view>
  <view class="{{item.current== 1 ? 'tabbartext' :''}}">{{item.text}}</view>
  </navigator> 
 </view>
 </block>
</view>
</template>

template.css

.icon{
 width:54rpx;
 height: 54rpx;
}
.tabbar{
 width:100%;
 position: fixed;
 bottom:0;
 padding:10rpx;
 margin-left:-4rpx;
 background:#f7f7fa;
 font-size:20rpx;
 color:#8a8a8a;
 box-shadow: 6rpx 6rpx 6rpx 6rpx #aaa;
}

 .tabbar-item{
 float:left;
 width:25%;
 text-align: center;
 overflow: hidden;
}
/*当前字体颜色*/
.tabbartext{
 color:red;
}

template.js

//初始化数据
function tabbarinit() {
 return [
  { "current":0,
  "pagepath": "/pages/index/index",
  "iconpath": "/imgs/home.png",
  "selectediconpath": "/imgs/home_on.png",
  "text": "主页"
  },
  {
  "current": 0,
  "pagepath": "/pages/news/news",
  "iconpath": "/imgs/message.png",
  "selectediconpath": "/imgs/message_on.png",
  "text": "资讯"

  },
  {
  "current": 0,
  "pagepath": "/pages/category/category",
  "iconpath": "/imgs/category.png",
  "selectediconpath": "/imgs/category_on.png",
  "text": "分类"
  },
  {
  "current": 0,
  "pagepath": "/pages/buy/buy",
  "iconpath": "/imgs/buy.png",
  "selectediconpath": "/imgs/buy_on.png",
  "text": "购物"
  }
 ]

}
//tabbar 主入口
function tabbarmain(bindname = "tabdata", id, target) {
 var that = target;
 var binddata = {};
 var otabbar = tabbarinit();
 otabbar[id]['iconpath'] = otabbar[id]['selectediconpath']//换当前的icon
 otabbar[id]['current'] = 1;
 binddata[bindname] = otabbar
 that.setdata({ binddata });
}

module.exports = {
 tabbar: tabbarmain
}

到此改组件完成，然后讲解一下使用方法。
我们先把样式载入到app.wxss

@import "/template/template.wxss";

在index文件夹

index.wxml

<import src="../../template/template.wxml"/>
<template is="tabbar" data="{{tabbar:binddata.tabbar}}"/>

index.js

const app = getapp()
var template = require('../../template/template.js');
page({
 data: {

 },
 onload: function () {
 template.tabbar("tabbar", 0, this)//0表示第一个tabbar
 },
})

news.wxml与index.wxml一样
news.js如下

const app = getapp()
var template = require('../../template/template.js');
page({
 data: { },

 onload: function () {
 template.tabbar("tabbar", 1, this)//1表示第二个tabbar
 },

})

效果如图

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。