React Native Reponsive UI

Building responsive UIs in React Native.

An example is available via expo here.

Installation

npm install react-native-responsive-ui --save

Usage

The MediaQuery component renders its children only if the query evaluates to true (see list of properties below). This component listens to changes in the window dimensions. In the example below, we render the Logo component if the window's height has a minimum size of 450dp and if the device orientation is in portrait mode (height is larger than width).

Media Queries

// @flow
import React, {Component} from "react";
import {View} from "react-native";
import {MediaQuery} from "react-native-responsive-ui";

export default class Login extends Component {
    render(): React$Element<*> {
        return <View>
            <MediaQuery minHeight={450} orientation="portrait">
                <Logo />
            </MediaQuery>
        </View>;
    }
}

Properties

Name	Type	Description
minHeight	dp	Minimum height of the window.
maxHeight	dp	Maximum height of the window.
minWidth	dp	Minimum width of the window.
maxWidth	dp	Maximum width of the window.
minAspectRatio	number	Minimum aspect ration of the window (ratio of horizontal pixels to vertical pixels).
maxAspectRatio	number	Maximum aspect ration of the window (ratio of horizontal pixels to vertical pixels).
minPixelRatio	number	Minimum device pixel density. See PixelRatio.
maxPixelRatio	number	Maximum device pixel density. See PixelRatio.
orientation	portrait or landspace	Indicates whether the viewport is in landscape (the display is wider than it is tall) or portrait (the display is square or taller than it is wide) mode.
platform	string	Platform of the device. See Platform.
condition	boolean	Abritrary boolean value that must be true for the media query to pass.

useDimensions

import React from "react";
import {useDimensions} from "react-native-responsive-ui";

export default ({ children }) =>  {
  const {width, height} = useDimensions();
  console.log(`New window dimensions: ${width}x${height}`);
  return children;
};

useStylesheet

import React from "react";
import {useStylesheet} from "react-native-responsive-ui";

export default class Buttons extends ResponsiveComponent {
    render() {
        const style = useStylesheet(staticStyle)
        return <View style={style.btns}>
            <Button label="Login" primary style={style.btn} />
            <Button label="Sign Up" style={style.btn} />
        </View>;
    }
}

const staticStyle = [
  {
      query: { orientation: "landscape" },
      style: {
          btns: {
              flexDirection: "row"
          },
          btn: {
              flex: 1
          }
      }
  },
  {
      query: { orientation: "portrait" },
      style: {
          btns: {
              alignSelf: "stretch"
          },
          btn: {
              flex: 0
          }
      }
  }
];

Media Query

mediaQuery() evaluates a media query and return true or false. See example below.

import {mediaQuery, useDimensions} from "react-native-responsive-ui";

const {width, height} = useDimensions();
mediaQuery({ orientation: "portrait", minHeight: 450 }, width, height)

ResponsiveComponent

ResponsiveComponents extends React.Component and add the window dimensions to the state of the component.

import React from "react";
import {ResponsiveComponent} from "react-native-responsive-ui";

export default class Debug extends ResponsiveComponent {
    render() {
        const {width, height} = this.state.window;
        console.log(`New window dimensions: ${width}x${height}`);
        return null;
    }
}

getStyleSheet

import React from "react";
import {ResponsiveComponent, getStyleSheet} from "react-native-responsive-ui";

export default class Debug extends ResponsiveComponent {
    render() {
        const {width, height} = this.state.window;
        const styles = [
            {
                query: { minHeight: 500 },
                style: { container: { backgroundColor: "red" } }
            }
        ];
        const style = getStyleSheet({width, height}, styles)
        return <View style={style.container} />
    }
}