# Elevator 电梯楼层

### 介绍

用于列表快速定位以及索引的显示

### 安装

```tsx
import { Elevator } from '@nutui/nutui-react-native';
```

## 代码演示

### 基本用法

:::demo

```tsx
import React from 'react'
import { Elevator } from '@nutui/nutui-react-native'

const App = () => {
  const dataList = [
    {
      title: 'A',
      list: [
        {
          name: '安徽',
          id: 1,
        },
      ],
    },
    {
      title: 'B',
      list: [
        {
          name: '北京',
          id: 2,
        },
      ],
    },
    {
      title: 'G',
      list: [
        {
          name: '广西',
          id: 3,
        },
        {
          name: '广东',
          id: 4,
        },
      ],
    },
    {
      title: 'H',
      list: [
        {
          name: '湖南',
          id: 5,
        },
        {
          name: '湖北',
          id: 6,
        },
        {
          name: '河南',
          id: 7,
        },
      ],
    },
  ]
  const onClickItem = (key: string, item: any) => {
    console.log(key, JSON.stringify(item))
  }

  const onClickIndex = (key: string) => {
    console.log(key)
  }
  return (
    <Elevator
      indexList={dataList}
      height="260"
      onClickItem={(key: string, item: any) => onClickItem(key, item)}
      onClickIndex={(key: string) => onClickIndex(key)}
    />
  )
}
export default App;
```

:::

### 自定义索引

:::demo

```tsx
import React from 'react'
import { Elevator } from '@nutui/nutui-react-native'

const App = () => {
  const dataList = [
    {
      num: '一',
      list: [
        {
          name: '北京',
          id: 1,
        },
        {
          name: '上海',
          id: 2,
        },
        {
          name: '深圳',
          id: 3,
        },
        {
          name: '广州',
          id: 4,
        },
        {
          name: '杭州',
          id: 5,
        },
      ],
    },
    {
      num: '二',
      list: [
        {
          name: '成都',
          id: 6,
        },
        {
          name: '西安',
          id: 7,
        },
        {
          name: '天津',
          id: 8,
        },
        {
          name: '武汉',
          id: 9,
        },
        {
          name: '长沙',
          id: 10,
        },
        {
          name: '重庆',
          id: 11,
        },
        {
          name: '苏州',
          id: 12,
        },
        {
          name: '南京',
          id: 13,
        },
      ],
    },
    {
      num: '三',
      list: [
        {
          name: '西宁',
          id: 14,
        },
        {
          name: '兰州',
          id: 15,
        },
        {
          name: '石家庄',
          id: 16,
        },
        {
          name: '秦皇岛',
          id: 17,
        },
        {
          name: '大连',
          id: 18,
        },
        {
          name: '哈尔滨',
          id: 19,
        },
        {
          name: '长春',
          id: 20,
        },
        {
          name: '太原',
          id: 21,
        },
      ],
    },
  ]
  const onClickItem = (key: string, item: any) => {
    console.log(key, JSON.stringify(item))
  }

  const onClickIndex = (key: string) => {
    console.log(key)
  }
  return (
    <Elevator
      indexList={dataList}
      height="220"
      acceptKey="num"
      onClickItem={(key: string, item: any) => onClickItem(key, item)}
      onClickIndex={(key: string) => onClickIndex(key)}
    />
  )
}
export default App;
```

:::

### 吸顶索引

:::demo

```tsx
import React from 'react'
import { Elevator } from '@nutui/nutui-react-native'

const App = () => {
  const dataList = [
    {
      title: 'A',
      list: [
        {
          name: '安徽',
          id: 1,
        },
      ],
    },
    {
      title: 'B',
      list: [
        {
          name: '北京',
          id: 2,
        },
      ],
    },
    {
      title: 'C',
      list: [
        {
          name: '重庆',
          id: 3,
        },
      ],
    },
    {
      title: 'F',
      list: [
        {
          name: '福建',
          id: 4,
        },
      ],
    },
    {
      title: 'G',
      list: [
        {
          name: '广西',
          id: 5,
        },
        {
          name: '广东',
          id: 6,
        },
        {
          name: '甘肃',
          id: 7,
        },
        {
          name: '贵州',
          id: 8,
        },
      ],
    },
    {
      title: 'H',
      list: [
        {
          name: '湖南',
          id: 9,
        },
        {
          name: '湖北',
          id: 10,
        },
        {
          name: '海南',
          id: 11,
        },
        {
          name: '河北',
          id: 12,
        },
        {
          name: '河南',
          id: 13,
        },
        {
          name: '黑龙江',
          id: 14,
        },
      ],
    },
    {
      title: 'J',
      list: [
        {
          name: '吉林',
          id: 15,
        },
        {
          name: '江苏',
          id: 16,
        },
        {
          name: '江西',
          id: 17,
        },
      ],
    },
    {
      title: 'L',
      list: [
        {
          name: '辽宁',
          id: 18,
        },
      ],
    },
  ]
  const onClickItem = (key: string, item: any) => {
    console.log(key, JSON.stringify(item))
  }

  const onClickIndex = (key: string) => {
    console.log(key)
  }
  return (
    <Elevator
      indexList={dataList}
      height="220"
      isSticky
      onClickItem={(key: string, item: any) => onClickItem(key, item)}
      onClickIndex={(key: string) => onClickIndex(key)}
    />
  )
}
export default App;
```

:::

### 自定义内容

:::demo

```tsx
import React from 'react'
import { Elevator, elevatorContext, Icon } from '@nutui/nutui-react-native'

const App = () => {
  const dataList = [
    {
      title: 'A',
      list: [
        {
          name: '安徽',
          id: 1,
        },
      ],
    },
    {
      title: 'B',
      list: [
        {
          name: '北京',
          id: 2,
        },
      ],
    },
    {
      title: 'G',
      list: [
        {
          name: '广西',
          id: 3,
        },
        {
          name: '广东',
          id: 4,
        },
      ],
    },
    {
      title: 'H',
      list: [
        {
          name: '湖南',
          id: 5,
        },
        {
          name: '湖北',
          id: 6,
        },
        {
          name: '河南',
          id: 7,
        },
      ],
    },
  ]
  const onClickItem = (key: string, item: any) => {
    console.log(key, JSON.stringify(item))
  }

  const onClickIndex = (key: string) => {
    console.log(key)
  }
  return (
    <Elevator
      indexList={dataList}
      height="260"
      onClickItem={(key: string, item: any) => onClickItem(key, item)}
      onClickIndex={(key: string) => onClickIndex(key)}
    >
      <elevatorContext.Consumer>
        {(value) => {
          return (
            <>
              <Icon name="JD" size="12" />
              <span style={{ marginLeft: '15px' }}>{value?.name}</span>
            </>
          )
        }}
      </elevatorContext.Consumer>
    </Elevator>
  )
}
export default App;
```

:::

## API

### Props

| 字段        | 说明               | 类型                               | 默认值                |
| ----------- | ------------------ | ---------------------------------- | --------------------- |
| height      | 电梯区域的高度     | Number                             | `200`                 |
| acceptKey   | 索引 key 值        | String                             | `title`               |
| indexList   | 索引列表           | Array（item 需包含 id、name 属性） | `[{id: 0, name: ''}]` |
| isSticky    | 索引是否吸顶       | Boolean                            | `false`               |
| spaceHeight | 右侧锚点的上下间距 | Number                             | `23`                  |
| titleHeight | 左侧索引的高度     | Number                             | `35`                  |

### Event

| 名称         | 说明     | 回调参数                               |
| ------------ | -------- | -------------------------------------- |
| onClickItem  | 点击内容 | key: string, item: { id: 0, name: '' } |
| onClickIndex | 点击索引 | key: string                            |