TDesign电商小程序模板解析01-自定义底部导航栏（二）-阿里云开发者社区

TDesign电商小程序模板解析01-自定义底部导航栏（二）

2023-06-26 1028

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简介： TDesign电商小程序模板解析01-自定义底部导航栏（二）

3 创建底部导航条

我们底部导航条作为一级页面，可以使用微信自带的tabBar组件，配置方法是直接在app.json文件里增加对应的属性。导航条可以使用图标+文字的方案，图标有两种一种是选中状态，一种是未选中状态。

"tabBar": {
    "custom": true,
    "color": "#666666",
    "selectedColor": "#FF5F15",
    "backgroundColor": "#ffffff",
    "borderStyle": "black",
    "list": [
      {
        "pagePath": "pages/home/home",
        "text": "首页"
      },
      {
        "pagePath": "pages/goods/category/index",
        "text": "分类"
      },
      {
        "pagePath": "pages/cart/index",
        "text": "购物车"
      },
      {
        "pagePath": "pages/usercenter/index",
        "text": "我的"
      }
    ]
  }

把这个配置添加到app.json发现底部菜单栏并没有出现，原因是现在我们设置了cutom为true，表示我们要自己定义菜单栏的表现形式，因此需要在根目录创建一个custom-tab-bar文件夹

在文件夹下建立如下文件

在index.json里输入如下配置

{
  "component": true,
  "usingComponents": {
    "t-tab-bar": "tdesign-miniprogram/tab-bar/tab-bar",
    "t-tab-bar-item": "tdesign-miniprogram/tab-bar-item/tab-bar-item",
    "t-icon": "tdesign-miniprogram/icon/icon"
  }
}

component为true表示这是一个自定义组件，下边引入了三个框架自带组件

在data.js里输入如下代码

export default [
  {
    icon: 'home',
    text: '首页',
    url: 'pages/home/home',
  },
  {
    icon: 'sort',
    text: '分类',
    url: 'pages/goods/category/index',
  },
  {
    icon: 'cart',
    text: '购物车',
    url: 'pages/cart/index',
  },
  {
    icon: 'person',
    text: '个人中心',
    url: 'pages/usercenter/index',
  },
];

这里导出了一个数组，数组里的元素是菜单的具体配置，包括图标、文字名称和路径，但这里icon并没有指名路径，是使用框架自带的图标

剩下的配置我们就不解读了，官方已经编写好了，我们只需要复用他的代码就可以

index.js

import TabMenu from './data';
Component({
  data: {
    active: 0,
    list: TabMenu,
  },
  methods: {
    onChange(event) {
      this.setData({ active: event.detail.value });
      wx.switchTab({
        url: this.data.list[event.detail.value].url.startsWith('/')
          ? this.data.list[event.detail.value].url
          : `/${this.data.list[event.detail.value].url}`,
      });
    },
    init() {
      const page = getCurrentPages().pop();
      const route = page ? page.route.split('?')[0] : '';
      const active = this.data.list.findIndex(
        (item) =>
          (item.url.startsWith('/') ? item.url.substr(1) : item.url) ===
          `${route}`,
      );
      this.setData({ active });
    },
  },
});

index.wxml

<t-tab-bar
 value="{{active}}"
 bindchange="onChange"
 split="{{false}}"
>
  <t-tab-bar-item
  wx:for="{{list}}"
  wx:for-item="item"
  wx:for-index="index"
  wx:key="index"
  >
  <view class="custom-tab-bar-wrapper">
    <t-icon prefix="wr" name="{{item.icon}}" size="48rpx" />
    <view class="text">{{ item.text }}</view>
  </view>
  </t-tab-bar-item>
</t-tab-bar>

index.wxss

.custom-tab-bar-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.custom-tab-bar-wrapper .text {
  font-size: 20rpx;
}

实际我们自己做的时候就是把这些代码依次的复制到对应的文件里，复制过去发现图标显示不了，需要再引入一个样式文件，在根目录建一个style文件夹，创建一个iconfont的wxss文件

样式文件的内容

@font-face {
    font-family: 'wr';
    src: url('https://cdn3.codesign.qq.com/icons/gqxWyZ1yMJZmVXk/Yyg5Zp2LG8292lK/iconfont.woff?t=cfc62dd36011e60805f5c3ad1a20b642')
      format('woff2');
  }
  .wr {
    font-family: 'wr' !important;
    font-size: 32rpx;
    font-style: normal;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }
  .wr-deliver:before {
    content: '\e033';
  }
  .wr-indent_close:before {
    content: '\e041';
  }
  .wr-edit:before {
    content: '\e002';
  }
  .wr-succeed:before {
    content: '\e00d';
  }
  .wr-goods_return:before {
    content: '\e03c';
  }
  .wr-wallet:before {
    content: '\e051';
  }
  .wr-package:before {
    content: '\e047';
  }
  .wr-comment:before {
    content: '\e037';
  }
  .wr-exchang:before {
    content: '\e03e';
  }
  .wr-credit_card:before {
    content: '\e035';
  }
  .wr-service:before {
    content: '\e04a';
  }
  .wr-shop_bag:before {
    content: '\e02a';
  }
  .wr-goods_refund:before {
    content: '\e03d';
  }
  .wr-check:before {
    content: '\e053';
  }
  .wr-wechat:before {
    content: '\e065';
  }
  .wr-cartAdd:before {
    content: '\e05d';
  }
  .wr-home:before {
    content: '\e020';
  }
  .wr-person:before {
    content: '\e02c';
  }
  .wr-cart:before {
    content: '\e023';
  }
  .wr-location:before {
    content: '\e016';
  }
  .wr-arrow_forward:before {
    content: '\e012';
  }
  .wr-close:before {
    content: '\e021';
  }
  .wr-search:before {
    content: '\e011';
  }
  .wr-clear_filled:before {
    content: '\e027';
  }
  .wr-arrow_drop_up:before {
    content: '\e071';
  }
  .wr-arrow_drop_down:before {
    content: '\e070';
  }
  .wr-filter:before {
    content: '\e038';
  }
  .wr-copy:before {
    content: '\e001';
  }
  .wr-arrow_back:before {
    content: '\e003';
  }
  .wr-add_circle:before {
    content: '\e004';
  }
  .wr-Download:before {
    content: '\e006';
  }
  .wr-map:before {
    content: '\e007';
  }
  .wr-store:before {
    content: '\e008';
  }
  .wr-movie:before {
    content: '\e00a';
  }
  .wr-done:before {
    content: '\e00b';
  }
  .wr-minus:before {
    content: '\e00c';
  }
  .wr-list:before {
    content: '\e00e';
  }
  .wr-expand_less:before {
    content: '\e00f';
  }
  .wr-person_add:before {
    content: '\e010';
  }
  .wr-Photo:before {
    content: '\e013';
  }
  .wr-preview:before {
    content: '\e014';
  }
  .wr-remind:before {
    content: '\e015';
  }
  .wr-info:before {
    content: '\e017';
  }
  .wr-expand_less_s:before {
    content: '\e018';
  }
  .wr-arrow_forward_s:before {
    content: '\e019';
  }
  .wr-expand_more_s:before {
    content: '\e01a';
  }
  .wr-share:before {
    content: '\e01d';
  }
  .wr-notify:before {
    content: '\e01e';
  }
  .wr-add:before {
    content: '\e01f';
  }
  .wr-Home:before {
    content: '\e020';
  }
  .wr-delete:before {
    content: '\e022';
  }
  .wr-error:before {
    content: '\e025';
  }
  .wr-sort:before {
    content: '\e028';
  }
  .wr-sort_filled:before {
    content: '\e029';
  }
  .wr-shop_bag_filled:before {
    content: '\e02b';
  }
  .wr-person_filled:before {
    content: '\e02d';
  }
  .wr-cart_filled:before {
    content: '\e02e';
  }
  .wr-home_filled:before {
    content: '\e02f';
  }
  .wr-add_outline:before {
    content: '\e030';
  }
  .wr-compass:before {
    content: '\e034';
  }
  .wr-goods_exchange:before {
    content: '\e03a';
  }
  .wr-group_buy:before {
    content: '\e03b';
  }
  .wr-group:before {
    content: '\e03f';
  }
  .wr-indent_goods:before {
    content: '\e040';
  }
  .wr-help:before {
    content: '\e042';
  }
  .wr-group_takeout:before {
    content: '\e043';
  }
  .wr-label:before {
    content: '\e044';
  }
  .wr-indent_wating:before {
    content: '\e045';
  }
  .wr-member:before {
    content: '\e046';
  }
  .wr-scanning:before {
    content: '\e04b';
  }
  .wr-tv:before {
    content: '\e04d';
  }
  .wr-to_top:before {
    content: '\e04f';
  }
  .wr-visibility_off:before {
    content: '\e050';
  }
  .wr-error-1:before {
    content: '\e052';
  }
  .wr-arrow_right:before {
    content: '\e054';
  }
  .wr-arrow_left:before {
    content: '\e056';
  }
  .wr-picture_filled:before {
    content: '\e057';
  }
  .wr-navigation:before {
    content: '\e058';
  }
  .wr-telephone:before {
    content: '\e059';
  }
  .wr-indent_time:before {
    content: '\e05c';
  }
  .wr-cart_add:before {
    content: '\e05d';
  }
  .wr-classify:before {
    content: '\e060';
  }
  .wr-place:before {
    content: '\e063';
  }
  .wr-wechat_pay:before {
    content: '\e064';
  }
  .wr-security:before {
    content: '\e066';
  }
  .wr-alarm:before {
    content: '\e067';
  }
  .wr-person-1:before {
    content: '\e068';
  }
  .wr-open_in_new:before {
    content: '\e069';
  }
  .wr-uncheck:before {
    content: '\e06b';
  }
  .wr-thumb_up:before {
    content: '\e06c';
  }
  .wr-thumb_up_filled:before {
    content: '\e06d';
  }
  .wr-star:before {
    content: '\e06e';
  }
  .wr-star_filled:before {
    content: '\e06f';
  }
  .wr-cards:before {
    content: '\e072';
  }
  .wr-picture_error_filled:before {
    content: '\e076';
  }
  .wr-discount:before {
    content: '\e077';
  }

然后需要在app.wxss里引入

@import 'style/iconfont.wxss';

一切配置好之后我们就把底部导航栏制作好了

总结

我们本篇带着大家搭建了一下TDesign电商模板的底部导航条功能，模板是使用自定义组件进行了搭建，还引入了自定义样式文件，稍稍有一点复杂，可以照着教程自己实验一下。

TDesign电商小程序模板解析01-自定义底部导航栏（二）

3 创建底部导航条

总结

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