Files
react-native/docs/usewindowdimensions.html
T
2021-03-03 09:07:22 +00:00

43 lines
28 KiB
HTML

<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width,initial-scale=1">
<meta name="generator" content="Docusaurus v2.0.0-alpha.70">
<link rel="alternate" type="application/rss+xml" href="/blog/rss.xml" title="React Native Blog RSS Feed">
<link rel="alternate" type="application/atom+xml" href="/blog/atom.xml" title="React Native Blog Atom Feed">
<link rel="preconnect" href="https://www.google-analytics.com">
<script>window.ga=window.ga||function(){(ga.q=ga.q||[]).push(arguments)},ga.l=+new Date,ga("create","UA-41298772-2","auto"),ga("send","pageview")</script>
<script async src="https://www.google-analytics.com/analytics.js"></script>
<link rel="preconnect" href="https://www.google-analytics.com">
<link rel="preconnect" href="https://www.googletagmanager.com">
<script async src="https://www.googletagmanager.com/gtag/js?id=UA-41298772-2"></script>
<script>function gtag(){dataLayer.push(arguments)}window.dataLayer=window.dataLayer||[],gtag("js",new Date),gtag("config","UA-41298772-2",{})</script>
<link rel="search" type="application/opensearchdescription+xml" title="React Native" href="/opensearch.xml">
<script src="https://cdn.jsdelivr.net/npm/focus-visible@5.2.0/dist/focus-visible.min.js" defer="defer"></script>
<script src="https://snack.expo.io/embed.js" defer="defer"></script><title data-react-helmet="true">useWindowDimensions · React Native</title><meta data-react-helmet="true" name="twitter:image:alt" content="Image for React Native"><meta data-react-helmet="true" name="docsearch:language" content="en"><meta data-react-helmet="true" name="docsearch:version" content="0.63"><meta data-react-helmet="true" name="docsearch:docusaurus_tag" content="docs-default-0.63"><meta data-react-helmet="true" property="og:image" content="https://reactnative.dev/img/logo-og.png"><meta data-react-helmet="true" name="twitter:card" content="summary"><meta data-react-helmet="true" name="twitter:image" content="https://reactnative.dev/img/logo-og.png"><meta data-react-helmet="true" property="og:title" content="useWindowDimensions · React Native"><meta data-react-helmet="true" name="description" content="`jsx"><meta data-react-helmet="true" property="og:description" content="`jsx"><meta data-react-helmet="true" property="og:url" content="https://reactnative.dev/docs/usewindowdimensions"><link data-react-helmet="true" rel="shortcut icon" href="/img/favicon.ico"><link data-react-helmet="true" rel="preconnect" href="https://BH4D9OD16A-dsn.algolia.net" crossorigin="anonymous"><link data-react-helmet="true" rel="canonical" href="https://reactnative.dev/docs/usewindowdimensions"><link rel="stylesheet" href="/styles.9eb50f2e.css">
<link rel="stylesheet" href="/main.3de2b5ef.css">
<link rel="preload" href="/styles.1b71bc8a.js" as="script">
<link rel="preload" href="/runtime~main.c97aa552.js" as="script">
<link rel="preload" href="/main.253479d9.js" as="script">
<link rel="preload" href="/1.4dffec5b.js" as="script">
<link rel="preload" href="/2.8fcdf5b9.js" as="script">
<link rel="preload" href="/939.c1f14adb.js" as="script">
<link rel="preload" href="/ee5b3385.4c5f7c00.js" as="script">
<link rel="preload" href="/17896441.81f68a15.js" as="script">
<link rel="preload" href="/e25f7b4d.030a74aa.js" as="script">
</head>
<body>
<script>!function(){function t(t){document.documentElement.setAttribute("data-theme",t)}var e=function(){var t=null;try{t=localStorage.getItem("theme")}catch(t){}return t}();t(null!==e?e:"light")}()</script><div id="__docusaurus">
<nav aria-label="Skip navigation links"><button type="button" tabindex="0" class="skipToContent_3aLp">Skip to main content</button></nav><nav class="navbar navbar--fixed-top navbar--dark"><div class="navbar__inner"><div class="navbar__items"><div aria-label="Navigation bar toggle" class="navbar__toggle" role="button" tabindex="0"><svg aria-label="Menu" width="30" height="30" viewBox="0 0 30 30" role="img" focusable="false"><title>Menu</title><path stroke="currentColor" stroke-linecap="round" stroke-miterlimit="10" stroke-width="2" d="M4 7h22M4 15h22M4 23h22"></path></svg></div><a class="navbar__brand" href="/"><img src="/img/header_logo.svg" alt="React Native" class="themedImage_phiS themedImage--light_VJaY navbar__logo"><img src="/img/header_logo.svg" alt="React Native" class="themedImage_phiS themedImage--dark_1NF3 navbar__logo"><strong class="navbar__title">React Native</strong></a><div class="navbar__item dropdown dropdown--hoverable dropdown--left"><a class="navbar__item navbar__link" href="/docs/getting-started">0.63</a><ul class="dropdown__menu"><li><a class="dropdown__link" href="/docs/next/usewindowdimensions">Next</a></li><li><a aria-current="page" class="dropdown__link dropdown__link--active" href="/docs/usewindowdimensions">0.63</a></li><li><a class="dropdown__link" href="/docs/0.62/usewindowdimensions">0.62</a></li><li><a class="dropdown__link" href="/docs/0.61/usewindowdimensions">0.61</a></li><li><a class="dropdown__link" href="/docs/0.60/usewindowdimensions">0.60</a></li><li><a class="dropdown__link" href="/versions">All versions</a></li></ul></div></div><div class="navbar__items navbar__items--right"><a class="navbar__item navbar__link" href="/docs/getting-started">Docs</a><a class="navbar__item navbar__link" href="/docs/components-and-apis">Components</a><a class="navbar__item navbar__link navbar__link--active" href="/docs/accessibilityinfo">API</a><a class="navbar__item navbar__link" href="/help">Community</a><a class="navbar__item navbar__link" href="/blog">Blog</a><a href="https://github.com/facebook/react-native" target="_blank" rel="noopener noreferrer" class="navbar__item navbar__link navbar-github-link" aria-label="GitHub repository"></a><div class="react-toggle react-toggle--disabled displayOnlyInLargeViewport_Bh6k"><div class="react-toggle-track"><div class="react-toggle-track-check"><span class="toggle_1UDy">🌜</span></div><div class="react-toggle-track-x"><span class="toggle_1UDy">🌞</span></div></div><div class="react-toggle-thumb"></div><input type="checkbox" disabled="" aria-label="Dark mode toggle" class="react-toggle-screenreader-only"></div><button type="button" class="DocSearch DocSearch-Button" aria-label="Search"><span class="DocSearch-Button-Container"><svg width="20" height="20" class="DocSearch-Search-Icon" viewBox="0 0 20 20"><path d="M14.386 14.386l4.0877 4.0877-4.0877-4.0877c-2.9418 2.9419-7.7115 2.9419-10.6533 0-2.9419-2.9418-2.9419-7.7115 0-10.6533 2.9418-2.9419 7.7115-2.9419 10.6533 0 2.9419 2.9418 2.9419 7.7115 0 10.6533z" stroke="currentColor" fill="none" fill-rule="evenodd" stroke-linecap="round" stroke-linejoin="round"></path></svg><span class="DocSearch-Button-Placeholder">Search</span></span></button></div></div><div role="presentation" class="navbar-sidebar__backdrop"></div><div class="navbar-sidebar"><div class="navbar-sidebar__brand"><a class="navbar__brand" href="/"><img src="/img/header_logo.svg" alt="React Native" class="themedImage_phiS themedImage--light_VJaY navbar__logo"><img src="/img/header_logo.svg" alt="React Native" class="themedImage_phiS themedImage--dark_1NF3 navbar__logo"><strong class="navbar__title">React Native</strong></a></div><div class="navbar-sidebar__items"><div class="menu"><ul class="menu__list"><li class="menu__list-item"><a class="menu__link" href="/docs/getting-started">Docs</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/components-and-apis">Components</a></li><li class="menu__list-item"><a class="menu__link navbar__link--active" href="/docs/accessibilityinfo">API</a></li><li class="menu__list-item"><a class="menu__link" href="/help">Community</a></li><li class="menu__list-item"><a class="menu__link" href="/blog">Blog</a></li><li class="menu__list-item"><a role="button" class="menu__link menu__link--sublist">Versions</a><ul class="menu__list"><li class="menu__list-item"><a class="menu__link" href="/docs/next/usewindowdimensions">Next</a></li><li class="menu__list-item"><a aria-current="page" class="menu__link menu__link--active" href="/docs/usewindowdimensions">0.63</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/0.62/usewindowdimensions">0.62</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/0.61/usewindowdimensions">0.61</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/0.60/usewindowdimensions">0.60</a></li><li class="menu__list-item"><a class="menu__link" href="/versions">All versions</a></li></ul></li><li class="menu__list-item"><a href="https://github.com/facebook/react-native" target="_blank" rel="noopener noreferrer" class="menu__link navbar-github-link" aria-label="GitHub repository"></a></li></ul></div></div></div></nav><div class="main-wrapper"><div class="docPage_1mVJ"><div class="docSidebarContainer_uPTz" role="complementary"><div class="sidebar_M-Lc"><div class="menu menu--responsive thin-scrollbar menu_tgpy"><button aria-label="Open Menu" aria-haspopup="true" class="button button--secondary button--sm menu__button" type="button"><svg aria-label="Menu" class="sidebarMenuIcon_1e05" width="24" height="24" viewBox="0 0 30 30" role="img" focusable="false"><title>Menu</title><path stroke="currentColor" stroke-linecap="round" stroke-miterlimit="10" stroke-width="2" d="M4 7h22M4 15h22M4 23h22"></path></svg></button><ul class="menu__list"><li class="menu__list-item"><a class="menu__link menu__link--sublist menu__link--active" href="#!">APIs</a><ul class="menu__list"><li class="menu__list-item"><a class="menu__link" tabindex="0" href="/docs/accessibilityinfo">AccessibilityInfo</a></li><li class="menu__list-item"><a class="menu__link" tabindex="0" href="/docs/alert">Alert</a></li><li class="menu__list-item"><a class="menu__link" tabindex="0" href="/docs/animated">Animated</a></li><li class="menu__list-item"><a class="menu__link" tabindex="0" href="/docs/animatedvalue">Animated.Value</a></li><li class="menu__list-item"><a class="menu__link" tabindex="0" href="/docs/animatedvaluexy">Animated.ValueXY</a></li><li class="menu__list-item"><a class="menu__link" tabindex="0" href="/docs/appearance">Appearance</a></li><li class="menu__list-item"><a class="menu__link" tabindex="0" href="/docs/appregistry">AppRegistry</a></li><li class="menu__list-item"><a class="menu__link" tabindex="0" href="/docs/appstate">AppState</a></li><li class="menu__list-item"><a class="menu__link" tabindex="0" href="/docs/devsettings">DevSettings</a></li><li class="menu__list-item"><a class="menu__link" tabindex="0" href="/docs/dimensions">Dimensions</a></li><li class="menu__list-item"><a class="menu__link" tabindex="0" href="/docs/easing">Easing</a></li><li class="menu__list-item"><a class="menu__link" tabindex="0" href="/docs/interactionmanager">InteractionManager</a></li><li class="menu__list-item"><a class="menu__link" tabindex="0" href="/docs/keyboard">Keyboard</a></li><li class="menu__list-item"><a class="menu__link" tabindex="0" href="/docs/layoutanimation">LayoutAnimation</a></li><li class="menu__list-item"><a class="menu__link" tabindex="0" href="/docs/linking">Linking</a></li><li class="menu__list-item"><a class="menu__link" tabindex="0" href="/docs/panresponder">PanResponder</a></li><li class="menu__list-item"><a class="menu__link" tabindex="0" href="/docs/pixelratio">PixelRatio</a></li><li class="menu__list-item"><a class="menu__link" tabindex="0" href="/docs/platform">Platform</a></li><li class="menu__list-item"><a class="menu__link" tabindex="0" href="/docs/platformcolor">PlatformColor</a></li><li class="menu__list-item"><a class="menu__link" tabindex="0" href="/docs/share">Share</a></li><li class="menu__list-item"><a class="menu__link" tabindex="0" href="/docs/stylesheet">StyleSheet</a></li><li class="menu__list-item"><a class="menu__link" tabindex="0" href="/docs/systrace">Systrace</a></li><li class="menu__list-item"><a class="menu__link" tabindex="0" href="/docs/transforms">Transforms</a></li><li class="menu__list-item"><a class="menu__link" tabindex="0" href="/docs/vibration">Vibration</a></li><li class="menu__list-item"><a class="menu__link menu__link--sublist menu__link--active" href="#!" tabindex="0">Hooks</a><ul class="menu__list"><li class="menu__list-item"><a class="menu__link" tabindex="0" href="/docs/usecolorscheme">useColorScheme</a></li><li class="menu__list-item"><a aria-current="page" class="menu__link menu__link--active active" tabindex="0" href="/docs/usewindowdimensions">useWindowDimensions</a></li></ul></li><li class="menu__list-item"><a class="menu__link menu__link--sublist" href="#!" tabindex="0">Android APIs</a><ul class="menu__list"><li class="menu__list-item"><a class="menu__link" tabindex="0" href="/docs/backhandler">BackHandler</a></li><li class="menu__list-item"><a class="menu__link" tabindex="0" href="/docs/permissionsandroid">PermissionsAndroid</a></li><li class="menu__list-item"><a class="menu__link" tabindex="0" href="/docs/toastandroid">ToastAndroid</a></li></ul></li><li class="menu__list-item"><a class="menu__link menu__link--sublist" href="#!" tabindex="0">iOS APIs</a><ul class="menu__list"><li class="menu__list-item"><a class="menu__link" tabindex="0" href="/docs/actionsheetios">ActionSheetIOS</a></li><li class="menu__list-item"><a class="menu__link" tabindex="0" href="/docs/dynamiccolorios">DynamicColorIOS</a></li><li class="menu__list-item"><a class="menu__link" tabindex="0" href="/docs/settings">Settings</a></li></ul></li></ul></li></ul></div></div></div><main class="docMainContainer_1zi2"><div class="container padding-vert--lg docItemWrapper_1hMI"><div class="row"><div class="col docItemCol_2AGf"><div class="docItemContainer_1tAC"><article><header><h1 class="docTitle_cWlf">useWindowDimensions</h1></header><div class="markdown"><div class="mdxCodeBlock_1daz"><div class="codeBlockContent_2es_"><div tabindex="0" class="prism-code language-jsx codeBlock_27aQ thin-scrollbar"><div class="codeBlockLines_2rCb" style="color:#FFFFFF;background:#282C34"><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token keyword" style="color:#c5a5c5">import</span><span class="token plain"> </span><span class="token punctuation" style="color:#657b83">{</span><span class="token plain"> useWindowDimensions </span><span class="token punctuation" style="color:#657b83">}</span><span class="token plain"> </span><span class="token keyword" style="color:#c5a5c5">from</span><span class="token plain"> </span><span class="token string" style="color:#8dc891">&#x27;react-native&#x27;</span><span class="token punctuation" style="color:#657b83">;</span></div></div></div><button type="button" aria-label="Copy code to clipboard" class="copyButton_2bml">Copy</button></div></div><p><code>useWindowDimensions</code> automatically updates <code>width</code> and <code>height</code> values when screen size changes. You can get your application window&#x27;s width and height like so:</p><div class="mdxCodeBlock_1daz"><div class="codeBlockContent_2es_"><div tabindex="0" class="prism-code language-jsx codeBlock_27aQ thin-scrollbar"><div class="codeBlockLines_2rCb" style="color:#FFFFFF;background:#282C34"><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token keyword" style="color:#c5a5c5">const</span><span class="token plain"> windowWidth </span><span class="token operator" style="color:#fc929e">=</span><span class="token plain"> </span><span class="token function" style="color:#79b6f2">useWindowDimensions</span><span class="token punctuation" style="color:#657b83">(</span><span class="token punctuation" style="color:#657b83">)</span><span class="token punctuation" style="color:#657b83">.</span><span class="token plain">width</span><span class="token punctuation" style="color:#657b83">;</span><span class="token plain"></span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token plain"></span><span class="token keyword" style="color:#c5a5c5">const</span><span class="token plain"> windowHeight </span><span class="token operator" style="color:#fc929e">=</span><span class="token plain"> </span><span class="token function" style="color:#79b6f2">useWindowDimensions</span><span class="token punctuation" style="color:#657b83">(</span><span class="token punctuation" style="color:#657b83">)</span><span class="token punctuation" style="color:#657b83">.</span><span class="token plain">height</span><span class="token punctuation" style="color:#657b83">;</span></div></div></div><button type="button" aria-label="Copy code to clipboard" class="copyButton_2bml">Copy</button></div></div><h2><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_E4oP" id="example"></a>Example<a class="hash-link" href="#example" title="Direct link to heading">#</a></h2><div class="snack-player" data-snack-name="useWindowDimensions" data-snack-description="Example usage" data-snack-code="import%20React%20from%20%22react%22%3B%0Aimport%20%7B%20View%2C%20StyleSheet%2C%20Text%2C%20useWindowDimensions%20%7D%20from%20%22react-native%22%3B%0A%0Aconst%20App%20%3D%20()%20%3D%3E%20%7B%0A%20%20const%20window%20%3D%20useWindowDimensions()%3B%0A%20%20return%20(%0A%20%20%20%20%3CView%20style%3D%7Bstyles.container%7D%3E%0A%20%20%20%20%20%20%3CText%3E%7B%60Window%20Dimensions%3A%20height%20-%20%24%7Bwindow.height%7D%2C%20width%20-%20%24%7Bwindow.width%7D%60%7D%3C%2FText%3E%0A%20%20%20%20%3C%2FView%3E%0A%20%20)%3B%0A%7D%0Aconst%20styles%20%3D%20StyleSheet.create(%7B%0A%20%20container%3A%20%7B%0A%20%20%20%20flex%3A%201%2C%0A%20%20%20%20justifyContent%3A%20%22center%22%2C%0A%20%20%20%20alignItems%3A%20%22center%22%0A%20%20%7D%0A%7D)%3B%0A%0Aexport%20default%20App%3B" data-snack-dependencies="" data-snack-platform="web" data-snack-supported-platforms="ios,android" data-snack-theme="light" data-snack-preview="true" data-snack-loading="lazy"></div><ul><li>The <a href="https://github.com/react-native-community/react-native-hooks#usedimensions" target="_blank" rel="noopener noreferrer">useDimensions</a> hook from the community <a href="https://github.com/react-native-community/react-native-hooks" target="_blank" rel="noopener noreferrer">React native hooks</a> library aims to make handling screen/window size changes easier to work with.</li><li><a href="https://github.com/DaniAkash/react-native-responsive-dimensions" target="_blank" rel="noopener noreferrer">React Native Responsive Dimensions</a> also comes with responsive hooks.</li></ul><h2><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_E4oP" id="properties"></a>Properties<a class="hash-link" href="#properties" title="Direct link to heading">#</a></h2><h3><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_E4oP" id="fontscale"></a><code>fontScale</code><a class="hash-link" href="#fontscale" title="Direct link to heading">#</a></h3><p>The scale of the font currently used. Some operating systems allow users to scale their font sizes larger or smaller for reading comfort. This property will let you know what is in effect.</p><div class="mdxCodeBlock_1daz"><div class="codeBlockContent_2es_"><div tabindex="0" class="prism-code language-jsx codeBlock_27aQ thin-scrollbar"><div class="codeBlockLines_2rCb" style="color:#FFFFFF;background:#282C34"><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token function" style="color:#79b6f2">useWindowDimensions</span><span class="token punctuation" style="color:#657b83">(</span><span class="token punctuation" style="color:#657b83">)</span><span class="token punctuation" style="color:#657b83">.</span><span class="token plain">fontScale</span><span class="token punctuation" style="color:#657b83">;</span></div></div></div><button type="button" aria-label="Copy code to clipboard" class="copyButton_2bml">Copy</button></div></div><h3><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_E4oP" id="height"></a><code>height</code><a class="hash-link" href="#height" title="Direct link to heading">#</a></h3><p>The height in pixels of the window or screen your app occupies.</p><div class="mdxCodeBlock_1daz"><div class="codeBlockContent_2es_"><div tabindex="0" class="prism-code language-jsx codeBlock_27aQ thin-scrollbar"><div class="codeBlockLines_2rCb" style="color:#FFFFFF;background:#282C34"><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token function" style="color:#79b6f2">useWindowDimensions</span><span class="token punctuation" style="color:#657b83">(</span><span class="token punctuation" style="color:#657b83">)</span><span class="token punctuation" style="color:#657b83">.</span><span class="token plain">height</span><span class="token punctuation" style="color:#657b83">;</span></div></div></div><button type="button" aria-label="Copy code to clipboard" class="copyButton_2bml">Copy</button></div></div><h3><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_E4oP" id="scale"></a><code>scale</code><a class="hash-link" href="#scale" title="Direct link to heading">#</a></h3><p>The pixel ratio of the device your app is running on.</p><div class="mdxCodeBlock_1daz"><div class="codeBlockContent_2es_"><div tabindex="0" class="prism-code language-jsx codeBlock_27aQ thin-scrollbar"><div class="codeBlockLines_2rCb" style="color:#FFFFFF;background:#282C34"><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token function" style="color:#79b6f2">useWindowDimensions</span><span class="token punctuation" style="color:#657b83">(</span><span class="token punctuation" style="color:#657b83">)</span><span class="token punctuation" style="color:#657b83">.</span><span class="token plain">scale</span><span class="token punctuation" style="color:#657b83">;</span></div></div></div><button type="button" aria-label="Copy code to clipboard" class="copyButton_2bml">Copy</button></div></div><blockquote><p>A value of <code>1</code> indicates PPI/DPI of 96 (76 on some platforms). <code>2</code> indicates a Retina or high DPI display.</p></blockquote><h3><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_E4oP" id="width"></a><code>width</code><a class="hash-link" href="#width" title="Direct link to heading">#</a></h3><p>The width in pixels of the window or screen your app occupies.</p><div class="mdxCodeBlock_1daz"><div class="codeBlockContent_2es_"><div tabindex="0" class="prism-code language-jsx codeBlock_27aQ thin-scrollbar"><div class="codeBlockLines_2rCb" style="color:#FFFFFF;background:#282C34"><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token function" style="color:#79b6f2">useWindowDimensions</span><span class="token punctuation" style="color:#657b83">(</span><span class="token punctuation" style="color:#657b83">)</span><span class="token punctuation" style="color:#657b83">.</span><span class="token plain">width</span><span class="token punctuation" style="color:#657b83">;</span></div></div></div><button type="button" aria-label="Copy code to clipboard" class="copyButton_2bml">Copy</button></div></div></div></article><div class="docMetadata margin-vert--xl"><div class="row"><div class="col"><a href="https://github.com/facebook/react-native-website/blob/master/website/versioned_docs/version-0.63/usewindowdimensions.md" target="_blank" rel="noreferrer noopener"><svg fill="currentColor" height="1.2em" width="1.2em" preserveAspectRatio="xMidYMid meet" role="img" viewBox="0 0 40 40" class="iconEdit_2Hwv"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div><div class="col text--right"><em><small class="docMetadata-updated">Last updated on <time datetime="2020-10-29T04:19:29.000Z" class="docLastUpdatedAt_1gIo">10/29/2020</time></small></em></div></div></div><div class="margin-vert--lg"><nav class="pagination-nav" aria-label="Blog list page navigation"><div class="pagination-nav__item"><a class="pagination-nav__link" href="/docs/usecolorscheme"><div class="pagination-nav__sublabel">Previous</div><div class="pagination-nav__label">« useColorScheme</div></a></div><div class="pagination-nav__item pagination-nav__item--next"><a class="pagination-nav__link" href="/docs/backhandler"><div class="pagination-nav__sublabel">Next</div><div class="pagination-nav__label">BackHandler »</div></a></div></nav></div></div></div><div class="col col--3"><div class="tableOfContents_1zTD thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#example" class="table-of-contents__link">Example</a></li><li><a href="#properties" class="table-of-contents__link">Properties</a><ul><li><a href="#fontscale" class="table-of-contents__link"><code>fontScale</code></a></li><li><a href="#height" class="table-of-contents__link"><code>height</code></a></li><li><a href="#scale" class="table-of-contents__link"><code>scale</code></a></li><li><a href="#width" class="table-of-contents__link"><code>width</code></a></li></ul></li></ul></div></div></div></div></main></div></div><footer class="footer footer--dark"><div class="container"><div class="row footer__links"><div class="col footer__col"><h4 class="footer__title">Docs</h4><ul class="footer__items"><li class="footer__item"><a class="footer__link-item" href="/docs/getting-started">Getting Started</a></li><li class="footer__item"><a class="footer__link-item" href="/docs/tutorial">Tutorial</a></li><li class="footer__item"><a class="footer__link-item" href="/docs/components-and-apis">Components and APIs</a></li><li class="footer__item"><a class="footer__link-item" href="/docs/more-resources">More Resources</a></li></ul></div><div class="col footer__col"><h4 class="footer__title">Community</h4><ul class="footer__items"><li class="footer__item"><a class="footer__link-item" href="/help">The React Native Community</a></li><li class="footer__item"><a class="footer__link-item" href="/showcase">Who&#x27;s using React Native?</a></li><li class="footer__item"><a href="https://stackoverflow.com/questions/tagged/react-native" target="_blank" rel="noopener noreferrer" class="footer__link-item">Ask Questions on Stack Overflow</a></li><li class="footer__item"><a href="https://github.com/facebook/react-native/blob/master/CONTRIBUTING.md" target="_blank" rel="noopener noreferrer" class="footer__link-item">Contributor Guide</a></li><li class="footer__item"><a href="https://dev.to/t/reactnative" target="_blank" rel="noopener noreferrer" class="footer__link-item">DEV Community</a></li></ul></div><div class="col footer__col"><h4 class="footer__title">Find us</h4><ul class="footer__items"><li class="footer__item"><a class="footer__link-item" href="/blog">Blog</a></li><li class="footer__item"><a href="https://twitter.com/reactnative" target="_blank" rel="noopener noreferrer" class="footer__link-item">Twitter</a></li><li class="footer__item"><a href="https://github.com/facebook/react-native" target="_blank" rel="noopener noreferrer" class="footer__link-item">GitHub</a></li></ul></div><div class="col footer__col"><h4 class="footer__title">More</h4><ul class="footer__items"><li class="footer__item"><a href="https://reactjs.org/" target="_blank" rel="noopener noreferrer" class="footer__link-item">React</a></li><li class="footer__item"><a href="https://opensource.facebook.com/legal/privacy" target="_blank" rel="noopener noreferrer" class="footer__link-item">Privacy Policy</a></li><li class="footer__item"><a href="https://opensource.facebook.com/legal/terms" target="_blank" rel="noopener noreferrer" class="footer__link-item">Terms of Service</a></li></ul></div></div><div class="footer__bottom text--center"><div class="margin-bottom--sm"><a href="https://opensource.facebook.com" target="_blank" rel="noopener noreferrer" class="footerLogoLink_3cAK"><img class="footer__logo" alt="Facebook Open Source Logo" src="/img/oss_logo.png"></a></div><div class="footer__copyright">Copyright © 2021 Facebook, Inc.</div></div></div></footer></div>
<script src="/styles.1b71bc8a.js"></script>
<script src="/runtime~main.c97aa552.js"></script>
<script src="/main.253479d9.js"></script>
<script src="/1.4dffec5b.js"></script>
<script src="/2.8fcdf5b9.js"></script>
<script src="/939.c1f14adb.js"></script>
<script src="/ee5b3385.4c5f7c00.js"></script>
<script src="/17896441.81f68a15.js"></script>
<script src="/e25f7b4d.030a74aa.js"></script>
</body>
</html>