ant-design/components/tree/demo/switcher-icon.md

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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
```jsx
import { Tree } from 'antd';
import { DownOutlined } from '@ant-design/icons';
class Demo extends React.Component {
onSelect = (selectedKeys, info) => {
console.log('selected', selectedKeys, info);
};
render() {
return (
<Tree
showLine
switcherIcon={<DownOutlined />}
defaultExpandedKeys={['0-0-0']}
onSelect={this.onSelect}
treeData={[
{
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',
},
],
},
],
},
]}
/>
);
}
}
export default Demo;
```