refactor: split ExpandItem from Mainpage

src/components/ExpandItem/ExpandItem.config.ts

@@ -0,0 +1,3 @@
+export default {
+  component: true,
+};

src/components/ExpandItem/ExpandItem.tsx

@@ -0,0 +1,31 @@
+import { View } from '@tarojs/components';
+import { Component, ReactNode } from 'react';
+import { AtAccordion } from 'taro-ui';
+
+export class ExpandItem extends Component {
+  state = {
+    open: false,
+  };
+  props = {
+    title: '',
+    content: <View></View>,
+  };
+
+  handleClick(value: boolean) {
+    this.setState({ open: value });
+  }
+
+  render(): ReactNode {
+    return (
+      <View>
+        <AtAccordion
+          open={this.state.open}
+          onClick={this.handleClick.bind(this)}
+          title={this.props.title}
+        >
+          {this.props.content}
+        </AtAccordion>
+      </View>
+    );
+  }
+}