React-native-parallax-scroll NPM

react-native-parallax-scroll

A ScrollView-like component that:

Has a parallax background
Has a parallax foreground
Has a fixed or sticky header
Can be nested within other views
Works on iOS and Android

Installation

$ npm install react-native-parallax-scroll --save

Demo

| npm.io | npm.io | npm.io |

Basic Usage

import ParallaxScroll from 'react-native-parallax-scroll';

// Inside of a component's render() method:
render() {
  return (
     <ParallaxScroll
      renderHeader={() => <Header />}
      headerHeight={50}
      isHeaderFixed={false}
      parallaxHeight={250}
      renderParallaxBackground={() => <Background />}
      renderParallaxForeground={() => <Foreground />}
      parallaxBackgroundScrollSpeed={5}
      parallaxForegroundScrollSpeed={2.5}
    >
      <Welcome />
    </ParallaxScroll>
  );
}

Examples

Please clone the repo and run npm run storybook or yarn storybook to show examples of usages.

Usage (API)

All of the properties of ScrollView are supported. Please refer to the ScrollView documentation for more detail.

The ParallaxScroll component adds a few additional properties, as described below.

Property	Type	Defaut	Description
`style`	`object`	`{}`	Component's styles
`width`	`number`	`Dimensions.get('window').width`	Component's width.
`height`	`number`	`Dimensions.get('window').height`	Component's height.
`scrollStyle`	`object`	`{}`	These styles will be applied to the scroll view.
`headerHeight`	`number`	`45`	This is the height of sticky(fixed) header.
`renderHeader`	`func`	`null`	This renders an optional sticky(fixed) header that will be visible to the top of the view.
`isHeaderFixed`	`bool`	`false`	Is header fixed to top(not sticky)?
`parallaxHeight`	`number`	`Dimensions.get('window').width * 9 / 16`	This is the height of parallax.
`scrollableComponent`	`class`	`ScrollView`	This is a class of scrollable component.
`isBackgroundScalable`	`bool`	`true`	Is background scalable on iOS?
`headerBackgroundColor`	`string`	`rgba(0, 0, 0, 0)`	The color of the unsticked(unfixed) header background.
`contentContainerStyle`	`object`	`{}`	These styles will be applied to the scroll view content container which wraps all of the child views.
`onChangeHeaderVisibility`	`func`	`null`	A callback function that is invoked when the parallax header is hidden or shown (as the user is scrolling). Function is called with a `boolean` value to indicate whether header is visible or not.
`renderParallaxBackground`	`func`	`() => <View />`	This renders the background of the parallax.
`renderParallaxForeground`	`func`	`() => <View />`	This renders the foreground of the parallax.
`fadeOutParallaxBackground`	`bool`	`false`	If `true`, the background will fade out as the user scrolls up.
`fadeOutParallaxForeground`	`bool`	`false`	If `true`, the foreground will fade out as the user scrolls up.
`headerFixedBackgroundColor`	`string`	`rgba(0, 0, 0, 1)`	The color of the sticked(fixed) header background.
`parallaxBackgroundScrollSpeed`	`number`	`5`	The speed factor that the background moves at relative to the scroll content.
`parallaxForegroundScrollSpeed`	`number`	`5`	The speed factor that the foreground moves at relative to the scroll content.

Contributing

I welcome contributions! Please open an issues if you have any feature ideas or find any bugs. I also accept pull requests with open arms. I will go over the issues when I have time. :)

react react-native reactNative parallax scroll scrollView

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