React-native-animated-pagination-dots NPM

React Native Animated Pagination Dots

FlatList animated pagination dots. Some (maybe all) ideas and credits goes to Catalin Miron 👏.

This package does not use any dependencies but Animated API. Now uses react-native-svg for the LiquidLike

Few days ago I made a reddit post, and people requested to open source it.

For more Copy & Paste stuff, go check example folder

TODO

Installation

npm install react-native-animated-pagination-dots
yarn add react-native-animated-pagination-dots

Usage

For the ViewPager, check their own repo

import {ExpandingDot} from "react-native-animated-pagination-dots";

const SLIDER_DATA = [
  {
    key: '1',
    title: 'App showcase ✨',
    description:
      'Lorem Ipsum is simply dummy text of the printing and typesetting industry.',
  },
  {
    key: '2',
    title: 'Introduction screen 🎉',
    description:
      "Many desktop publishing packages and web page editors now use Lorem Ipsum as their default model text, and a search for 'lorem ipsum' will uncover many web sites still in their infancy. ",
  },
];
  const scrollX = React.useRef(new Animated.Value(0)).current;

<FlatList
    data={SLIDER_DATA}
    keyExtractor={keyExtractor}
    showsHorizontalScrollIndicator={false}
    onScroll={Animated.event(
      [{ nativeEvent: { contentOffset: { x: scrollX } } }],
      {
        useNativeDriver: false,
      }
    )}
    pagingEnabled
    horizontal
    decelerationRate={'normal'}
    scrollEventThrottle={16}
    renderItem={renderItem}
/>

<ExpandingDot
    data={SLIDER_DATA}
    expandingDotWidth={30}
    scrollX={scrollX}
    inActiveDotOpacity={0.6}
    dotStyle={{
        width: 10,
        height: 10,
        backgroundColor: '#347af0',
        borderRadius: 5,
        marginHorizontal: 5
    }}
    containerStyle={{
        top: 30,
    }}
/>

Button Navigation Example

import React from 'react';
import {
  StyleSheet,
  View,
  Dimensions,
  Animated,
  TouchableOpacity,
  Text,
  StatusBar,
} from 'react-native';
import { LiquidLike } from 'react-native-animated-pagination-dots';

const { width } = Dimensions.get('screen');

const data = [
  {
    image:
      'https://cdn.dribbble.com/users/3281732/screenshots/13661330/media/1d9d3cd01504fa3f5ae5016e5ec3a313.jpg?compress=1&resize=1200x1200',
    backgroundColor: '#7bcf6e',
  },
  {
    image:
      'https://cdn.dribbble.com/users/3281732/screenshots/11192830/media/7690704fa8f0566d572a085637dd1eee.jpg?compress=1&resize=1200x1200',
    backgroundColor: '#4654a7',
  },
  {
    image:
      'https://cdn.dribbble.com/users/3281732/screenshots/9165292/media/ccbfbce040e1941972dbc6a378c35e98.jpg?compress=1&resize=1200x1200',
    backgroundColor: '#7370cf',
  },
  {
    image:
      'https://cdn.dribbble.com/users/3281732/screenshots/11205211/media/44c854b0a6e381340fbefe276e03e8e4.jpg?compress=1&resize=1200x1200',
    backgroundColor: '#db4747',
  },
];

const imageW = width * 0.7;
const imageH = imageW * 1.4;

const ButtonNavigation = () => {
  const scrollX = React.useRef(new Animated.Value(0)).current;
  const keyExtractor = React.useCallback((_, index) => index.toString(), []);
  //Current item index of flatlist
  const [activeIndex, setActiveIndex] = React.useState(0);
  let flatListRef = React.useRef(null);
  const gotoNextPage = () => {
    if (activeIndex + 1 < data.length) {
      // @ts-ignore
      flatListRef.current.scrollToIndex({
        index: activeIndex + 1,
        animated: true,
      });
    }
  };
  const gotoPrevPage = () => {
    if (activeIndex !== 0) {
      // @ts-ignore
      flatListRef.current.scrollToIndex({
        index: activeIndex - 1,
        animated: true,
      });
    }
  };
  const skipToStart = () => {
    // @ts-ignore
    flatListRef.current.scrollToIndex({
      index: data.length - 1,
      animated: true,
    });
  };
  //Flatlist props that calculates current item index
  const onViewRef = React.useRef(({ viewableItems }: any) => {
    setActiveIndex(viewableItems[0].index);
  });
  const viewConfigRef = React.useRef({ viewAreaCoveragePercentThreshold: 50 });
  const renderItem = React.useCallback(({ item }) => {
    return (
      <View style={[styles.itemContainer]}>
        <Animated.Image
          style={{
            width: imageW,
            height: imageH,
            borderRadius: 20,
            resizeMode: 'cover',
          }}
          source={{ uri: item.image }}
        />
      </View>
    );
  }, []);

  return (
    <View style={[styles.container]}>
      <StatusBar hidden />
      <View style={[StyleSheet.absoluteFillObject]}>
        {data.map((item, index) => {
          const inputRange = [
            (index - 1) * width,
            index * width,
            (index + 1) * width,
          ];
          const colorFade = scrollX.interpolate({
            inputRange,
            outputRange: [0, 1, 0],
          });
          return (
            <Animated.View
              key={index}
              style={[
                StyleSheet.absoluteFillObject,
                { backgroundColor: item.backgroundColor, opacity: colorFade },
              ]}
            />
          );
        })}
      </View>
      <Animated.FlatList
        ref={flatListRef}
        onViewableItemsChanged={onViewRef.current}
        viewabilityConfig={viewConfigRef.current}
        data={data}
        renderItem={renderItem}
        keyExtractor={keyExtractor}
        showsHorizontalScrollIndicator={false}
        pagingEnabled
        horizontal
        decelerationRate={'normal'}
        scrollEventThrottle={16}
        onScroll={Animated.event(
          [{ nativeEvent: { contentOffset: { x: scrollX } } }],
          {
            useNativeDriver: false,
          }
        )}
      />
      <LiquidLike
        data={data}
        scrollX={scrollX}
        dotSize={18}
        dotSpacing={6}
        lineDistance={7}
        lineHeight={4}
        inActiveDotOpacity={0.2}
        activeDotColor={'#fff'}
        containerStyle={{ flex: 1 }}
      />
      <View style={[styles.buttonContainer]}>
        <TouchableOpacity
          style={[styles.button]}
          onPress={() => gotoPrevPage()}
        >
          <Text style={[styles.buttonText]}>Previous</Text>
        </TouchableOpacity>
        <TouchableOpacity
          style={[styles.button]}
          onPress={() => gotoNextPage()}
        >
          <Text style={[styles.buttonText]}>Next</Text>
        </TouchableOpacity>
        <TouchableOpacity style={[styles.button]} onPress={() => skipToStart()}>
          <Text style={[styles.buttonText]}>Skip</Text>
        </TouchableOpacity>
      </View>
    </View>
  );
};

const styles = StyleSheet.create({
  container: {
    flex: 1,
    justifyContent: 'center',
    alignItems: 'center',
  },
  itemContainer: {
    flex: 1,
    width,
    justifyContent: 'center',
    alignItems: 'center',
  },
  buttonContainer: {
    flexDirection: 'row',
  },
  button: {
    margin: 20,
    fontWeight: '700',
  },
  buttonText: {
    color: '#fff',
  },
});

export default ButtonNavigation;