Introduction

React Native Parallax Header is a popular library that allows developers to add parallax effect to the header of their app. With this library, developers can create a scrolling header with an image or any other content that appears to move slower than the rest of the screen, creating a sense of depth and immersion for the user. Some of the key props available in React Native Parallax Header include: • headerHeight: The height of the header. This is required. • backgroundImage: The image to be used as the background of the header. • renderForeground: A function that returns the content to be displayed in the foreground of the header. • renderBackground: A function that returns the content to be displayed in the background of the header. • parallaxHeight: The height of the parallax effect. This defaults to the header height. • stickyHeaderHeight: The height of the sticky header that appears when scrolling down. This defaults to the header height.

API Usage

Installation

npm i react-native-parallax-header –save

And

npm i react-native-vector-icons/FontAwesome

Example

import React from 'react';
import {
  StyleSheet,
  View,
  Text,
  StatusBar,
  Dimensions,
  TouchableOpacity,
  Platform
} from 'react-native';
import Icon from 'react-native-vector-icons/FontAwesome';
import ReactNativeParallaxHeader from 'react-native-parallax-header';

const {height: SCREEN_HEIGHT} = Dimensions.get('window');

const IS_IPHONE_X = SCREEN_HEIGHT === 812 || SCREEN_HEIGHT === 896;
const STATUS_BAR_HEIGHT = Platform.OS === 'ios' ? (IS_IPHONE_X ? 44 : 20) : 0;
const HEADER_HEIGHT = Platform.OS === 'ios' ? (IS_IPHONE_X ? 88 : 64) : 64;
const NAV_BAR_HEIGHT = HEADER_HEIGHT - STATUS_BAR_HEIGHT;

const renderNavBar = () => (
  <View style={styles.navContainer}>
    <View style={styles.statusBar} />
      <View style={styles.navBar}>
        <TouchableOpacity style={styles.iconLeft} onPress={() => {}}>
          <Icon name="chevron-left" size={20} color="white" />
        </TouchableOpacity>
        <TouchableOpacity style={styles.iconRight} onPress={() => {}}>
          <Icon name="ellipsis-v" size={20} color="white" />
        </TouchableOpacity>
    </View>
  </View>
);

const renderContent = () => {
  return (
    <View style={styles.body}>
      {Array.from(Array(30).keys()).map((i) => (
        <View
          key={i}
          style={{padding: 20, alignItems: 'center', justifyContent: 'center'}}>
          <Text>Item {i + 1}</Text>
        </View>
      ))}
    </View>
  );
};

const title = () => {
  return (
    <View style={styles.body}>
      <Text style={{color: 'white', fontSize: 25}}>Parallax Header</Text>
    </View>
  );
};

const App = () => {
  return (
    <>
      <StatusBar barStyle="dark-content" />
      <ReactNativeParallaxHeader
        headerMinHeight={HEADER_HEIGHT}
        headerMaxHeight={250}
        extraScrollHeight={20}
        navbarColor="#3498db"
        titleStyle={styles.titleStyle}
        title={title()}
        backgroundImageScale={1.2}
        renderNavBar={renderNavBar}
        renderContent={renderContent}
        containerStyle={styles.container}
        contentContainerStyle={styles.contentContainer}
        innerContainerStyle={styles.container}
        scrollViewProps={{
          onScrollBeginDrag: () => console.log('onScrollBeginDrag'),
          onScrollEndDrag: () => console.log('onScrollEndDrag'),
        }}
      />
    </>
  );
};

const styles = StyleSheet.create({
  container: {
    flex: 1,
    padding:20,
  },
  contentContainer: {
    flexGrow: 1,
  },
  navContainer: {
    height: HEADER_HEIGHT,
    marginHorizontal: 10,
  },
  statusBar: {
    height: STATUS_BAR_HEIGHT,
    backgroundColor: 'transparent',
  },
  navBar: {
    height: NAV_BAR_HEIGHT,
    justifyContent: 'space-between',
    alignItems: 'center',
    flexDirection: 'row',
    backgroundColor: 'transparent',
  },
  titleStyle: {
    color: 'white',
    fontWeight: 'bold',
    fontSize: 18,
  },
});

export default App;

Tutorial

Coming Soon…