react-native-collapsible

Animated collapsible component for React Native using the Animated API

Pure JavaScript, supports dynamic content heights and components that is aware of its collapsed state (good for toggling arrows etc).

Installation

npm install --save react-native-collapsible

Collapsible Usage

import Collapsible from 'react-native-collapsible';
<Collapsible collapsed={isCollapsed}>
  <SomeCollapsedView />
</Collapsible>

Properties

Prop	Description	Default
`align`	Alignment of the content when transitioning, can be `top`, `center` or `bottom`	`top`
`collapsed`	Wether to show the child components or not	`true`
`collapsedHeight`	Which height should the component collapse to	`0`
`duration`	Duration of transition in milliseconds	`300`
`easing`	Function or function name from `Easing` (or `tween-functions` if < RN 0.8). Collapsible will try to combine `Easing` functions for you if you name them like `tween-functions`.	`easeOutCubic`

Accordion Usage

This is a convenience component for a common use case, see demo below.

import Accordion from 'react-native-collapsible/Accordion';
<Accordion 
  sections={['Section 1', 'Section 2', 'Section 3']}
  renderHeader={this._renderHeader}
  renderContent={this._renderContent}
/>

Properties

| Prop | Description | |---|---|---| |sections|An array of sections passed to the render methods| |renderHeader(content, index, isActive)|A function that should return a renderable representing the header| |renderContent(content, index, isActive)|A function that should return a renderable representing the content| |onChange(index)|An optional function that is called when currently active section is changed, index === false when collapsed| |initiallyActiveSection|Set which index in the sections array is initially open. Defaults to none. | |activeSection|Control which index in the sections array is currently open. Defaults to none. If false, closes all sections.| |underlayColor|The color of the underlay that will show through when tapping on headers. Defaults to black. | |align|See Collapsible| |duration|See Collapsible| |easing|See Collapsible|

Demo

Example

Check full example in the Example folder.

import React, { Component } from 'react-native';
import Accordion from 'react-native-collapsible/Accordion';

const SECTIONS = [
  {
    title: 'First',
    content: 'Lorem ipsum...',
  },
  {
    title: 'Second',
    content: 'Lorem ipsum...',
  }
];

class AccordionView extends Component {
  _renderHeader(section) {
    return (
      <View style={styles.header}>
        <Text style={styles.headerText}>{section.title}</Text>
      </View>
    );
  }

  _renderContent(section) {
    return (
      <View style={styles.content}>
        <Text>{section.content}</Text>
      </View>
    );
  }

  render {
    return (
      <Accordion
        sections={SECTIONS}
        renderHeader={this._renderHeader}
        renderContent={this._renderContent}
      />
    );
  }
}

Transition backgrounds

If you combine with the react-native-animatable library you can easily transition the background color between the active and inactive state or add animations.

Lets augment the example above with:

import * as Animatable from 'react-native-animatable';

(...)

  _renderHeader(section, index, isActive) {
    return (
      <Animatable.View
        style={styles.header}
        duration={300}
        transition="backgroundColor"
        style={{ backgroundColor: (isActive ? 'rgba(255,255,255,1)' : 'rgba(245,252,255,1)') }}>
        <Text style={styles.headerText}>{section.title}</Text>
      </Animatable.View>
    );
  }

  _renderContent(section, i, isActive) {
    return (
      <Animatable.View
        style={styles.content}
        duration={300}
        transition="backgroundColor"
        style={{ backgroundColor: (isActive ? 'rgba(255,255,255,1)' : 'rgba(245,252,255,1)') }}>
        <Animatable.Text
          duration={300}
          easing="ease-out"
          animation={isActive ? 'zoomIn' : false}>
          {section.content}
        </Animatable.Text>
      </Animatable.View>
    );
  }

(...)

To produce this (slowed down for visibility):