ant-design/components/tree/demo/switcher-icon.md
2022-05-23 14:37:16 +08:00

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---
order: 8
title:
zh-CN: 自定义展开/折叠图标
en-US: Customize collapse/expand icon
---
## zh-CN
自定义展开/折叠图标。
## en-US
customize collapse/expand icon of tree node
```tsx
import { DownOutlined } from '@ant-design/icons';
import { Tree } from 'antd';
import type { DataNode, TreeProps } from 'antd/lib/tree';
import React from 'react';
const treeData: DataNode[] = [
{
title: 'parent 1',
key: '0-0',
children: [
{
title: 'parent 1-0',
key: '0-0-0',
children: [
{
title: 'leaf',
key: '0-0-0-0',
},
{
title: 'leaf',
key: '0-0-0-1',
},
{
title: 'leaf',
key: '0-0-0-2',
},
],
},
{
title: 'parent 1-1',
key: '0-0-1',
children: [
{
title: 'leaf',
key: '0-0-1-0',
},
],
},
{
title: 'parent 1-2',
key: '0-0-2',
children: [
{
title: 'leaf',
key: '0-0-2-0',
},
{
title: 'leaf',
key: '0-0-2-1',
},
],
},
],
},
];
const App: React.FC = () => {
const onSelect: TreeProps['onSelect'] = (selectedKeys, info) => {
console.log('selected', selectedKeys, info);
};
return (
<Tree
showLine
switcherIcon={<DownOutlined />}
defaultExpandedKeys={['0-0-0']}
onSelect={onSelect}
treeData={treeData}
/>
);
};
export default App;
```