通过微信开发者工具 商城模板 创建新小程序

mini-program/custom-tab-bar/data.js

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+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',
+  },
+];

mini-program/custom-tab-bar/index.js

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+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 });
+    },
+  },
+});

mini-program/custom-tab-bar/index.json

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+{
+  "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"
+  }
+}

mini-program/custom-tab-bar/index.wxml

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+<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>
+

mini-program/custom-tab-bar/index.wxss

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