add tab bar

src/pages/user/user.tsx

@@ -1,7 +1,18 @@
 import { View, Text } from '@tarojs/components';
 import { Component, ReactNode } from 'react';
+import Taro from '@tarojs/taro';
+import type CustomTabBar from '../../custom-tab-bar';
+import './user.scss';
 
 export default class UserPage extends Component {
+  // 以下是TabBar相关
+  pageCtx = Taro.getCurrentInstance().page;
+  componentDidShow() {
+    const tabbar = Taro.getTabBar<CustomTabBar>(this.pageCtx);
+    tabbar?.setSelected(2);
+  }
+  // 以上是TabBar相关
+
   render(): ReactNode {
     return (
       <View>