# ScrollPicker

[![NPM version](https://img.shields.io/npm/v/@rn-components-kit/scroll-picker.svg)](https://www.npmjs.com/package/@rn-components-kit/scroll-picker)

English | [中文](./README.zh-CN.md)

Selecting option by scrolling operation. It supports following features:

- smoothing the differences between `Android` and `iOS` platforms
- multiple picker items
- cascading operation
- customized option content in `ScrollPicker.Item`

## How to use

```bash
npm install @rn-components-kit/scroll-picker --save
```

|Preview|Code|
|------------|:---------:|
|<img width="375" src="./preview/basic-usage.gif"/>|[Demo1 Code](./demos/Demo1.js)|
|<img width="375" src="./preview/cascading.gif"/>|[Demo2 Code](./demos/Demo2.js)|
|<img width="375" src="./preview/customize-option-content.gif"/>|[Demo3 Code](./demos/Demo3.js)|

## Props

- [`style`](#style)
- [`itemHeight`](#itemHeight)
- [`onValueChange`](#onValueChange)

## Reference

### Props

#### `style`

Allow you to customize style

|Type|Required|Default|
|----|--------|-------|
|object|no|-|

#### `itemHeight`

Height of each item in `ScrollPicker.Item`

|Type|Required|Default|
|----|--------|-------|
|number|no|30|

#### `onValueChange`

```js
(value: {[key: string]: any}) => void;
```

A callback will be triggered when ScrollPicker.Item's selected value changes

|Type|Required|Default|
|----|--------|-------|
|function|no|() => {}|

### Props for ScrollPicker.Item

- [`id`](#id)
- [`flex`](#flex)
- [`data`](#data)
- [`defaultValue`](#defaultValue)
- [`renderItem`](#renderItem)

#### `id`

A unique identifier in `ScrollPicker`

|Type|Required|Default|
|----|--------|-------|
|string|yes|-|

#### `flex`

How much of the remaining space in the flex container

|Type|Required|Default|
|----|--------|-------|
|number|no|1|

#### `data`

Data source of options

|Type|Required|Default|
|----|--------|-------|
|T[]|yes|-|

#### `defaultValue`

Default value to speficy which option is selected initially (must be one of `data`)

|Type|Required|Default|
|----|--------|-------|
|T|no|data[0]|

#### `renderItem`

```js
(params: {item: T, index: number}) => React.ReactElement;
```

Allows you to customize content style

|Type|Required|Default|
|----|--------|-------|
|function|yes|-|


Selecting option by scrolling operation. 

Introducing Webhook Events for Alert Changes

@rn-components-kit/scroll-picker

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scroll-picker

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@rn-components-kit/scroll-picker

ScrollPicker

How to use

Props

Reference

Props

`style`

`itemHeight`

`onValueChange`

Props for ScrollPicker.Item

`id`

`flex`

`data`

`defaultValue`

`renderItem`

Keywords

Related posts

@rn-components-kit/scroll-picker

ScrollPicker

How to use

Props

Reference

Props

style

itemHeight

onValueChange

Props for ScrollPicker.Item

id

flex

data

defaultValue

renderItem

Keywords

Related posts

ENISA Becomes a CVE Root, Expanding Its Role in Europe’s Vulnerability Ecosystem

Introducing Socket Scanning for OpenVSX Extensions

`style`

`itemHeight`

`onValueChange`

`id`

`flex`

`data`

`defaultValue`

`renderItem`