react-native-utils-scale

Provide solutions to make your app flexible for different screen sizes, different devices. When developing with react-native, you need to manually adjust your app to look great on a variety of different screen sizes. This package provides some simple tooling to make your scaling a whole lot easier.

Getting started

  yarn add react-native-utils-scale

or

  npm i react-native-utils-scale

RN Version < 0.60

    react-native link react-native-utils-scale

Run IOS

    cd ios && pod install
    react-native run-ios

Run Android

    react-native run-android

Jest setup

    jest.mock('react-native-utils-scale', () => {
        const UtilsScale = require('react-native-utils-scale/mock');
        return UtilsScale;
    });

Documents

API	Type	Description
scale	Function	Will return a linear scaled result of the provided size
fontScale	Function	Will return a linear scaled result of the font size provided
deviceInch	Number	Inch of device
hasNotch	Boolean	Tells if the device has a notch
isAndroid	Boolean	Tells if the device is Android operating system
isIOS	Boolean	Tells if the device is IOS operating system
isSmallDevice	Boolean	Tells the device has a screen size smaller than 4.8 inches
isTablet	Boolean	Tells if the device is a tablet
width	Number	Screen width
height	Number	Screen height

Source code demo

react-native-template-components A beautiful template for React Native.

Demo

Usage

import React from 'react';
import {SafeAreaView, ScrollView, StyleSheet, Text, View} from 'react-native';
import {
  fontScale,
  scale,
  deviceInch,
  hasNotch,
  isAndroid,
  isIOS,
  isSmallDevice,
  isTablet,
  width,
  height,
} from 'react-native-utils-scale';

const App = () => {
  return (
    <ScrollView>
      <SafeAreaView style={styles.container}>
        <Text style={styles.fontScale}>Device width: {width}</Text>
        <Text style={styles.fontScale}>Device height: {height}</Text>
        <Text style={styles.fontScale}>Device inch: {deviceInch}</Text>
        <Text style={styles.fontScale}>
          isAndroid: {isAndroid.toString()}
        </Text>
        <Text style={styles.fontScale}>isIOS: {isIOS.toString()}</Text>
        <Text style={styles.fontScale}>isTablet: {isTablet.toString()}</Text>
        <Text style={styles.fontScale}>hasNotch: {hasNotch.toString()}</Text>
        <Text style={styles.fontScale}>
          isSmallDevice: {isSmallDevice.toString()}
        </Text>

        <View style={[styles.box, styles.scale]}>
          <Text style={[styles.color, {fontSize: fontScale(14)}]}>150x150</Text>
          <Text style={[styles.color, {fontSize: fontScale(14)}]}>
            Scale: {scale(150)}x{scale(150)}
          </Text>
        </View>
      </SafeAreaView>
    </ScrollView>
  );
};

const styles = StyleSheet.create({
  container: {
    flex: 1,
    alignItems: 'center',
    justifyContent: 'center',
  },
  fontScale: {
    fontSize: fontScale(16),
  },
  box: {
    width: 150,
    height: 150,
    backgroundColor: 'black',
    alignItems: 'center',
    justifyContent: 'center',
    margin: 16,
  },
  scale: {
    width: scale(150),
    height: scale(150),
  },
  color: {
    color: 'white',
  },
});

export default App;