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</script></nav></div><div class="container mainContainer docsContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/facebook/react-native-website/blob/master/docs/appearance.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 id="__docusaurus" class="postHeaderTitle">Appearance</h1></header><article><div><span><pre><code class="hljs css language-jsx"><span class="token keyword">import</span> <span class="token punctuation">{</span>Appearance<span class="token punctuation">}</span> <span class="token keyword">from</span> <span class="token string">'react-native'</span><span class="token punctuation">;</span>
</code></pre>
<p>Exposes information about the user's appearance preferences.</p>
<p>You can use the Appearance module to determine if the user prefers a dark color scheme:</p>
<pre><code class="hljs css language-jsx"><span class="token keyword">const</span> colorScheme <span class="token operator">=</span> Appearance<span class="token punctuation">.</span><span class="token function">getColorScheme</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token keyword">if</span> <span class="token punctuation">(</span>colorScheme <span class="token operator">===</span> <span class="token string">'dark'</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
<span class="token comment">// Use dark color scheme</span>
<span class="token punctuation">}</span>
</code></pre>
<p>Although the color scheme is available immediately, this may change (e.g scheduled color scheme change at sunrise or sunset). Any rendering logic or styles that depend on the user preferred color scheme should try to call this function on every render, rather than caching the value (for example, using a context and the <code>useColorScheme</code> hook, or using inline styles rather than setting a value in a <code>StyleSheet</code>).</p>
<div class="toggler">
<span>Developer Notes</span>
<span role="tablist" class="toggle-devNotes">
<button role="tab" class="button-webNote" onclick="displayTabs('devNotes', 'webNote')">Web</button>
<button role="tab" class="button-androidNote" onclick="displayTabs('devNotes', 'androidNote')">Android</button>
<button role="tab" class="button-iosNote" onclick="displayTabs('devNotes', 'iosNote')">iOS</button>
</span>
</div>
<p><block class="webNote devNotes" /></p>
<blockquote>
<p>The Appearance API is inspired by the <a href="https://drafts.csswg.org/mediaqueries-5/">Media Queries draft</a> from the W3C. The color scheme preference is modeled after the <a href="https://developer.mozilla.org/en-US/docs/Web/CSS/@media/prefers-color-scheme"><code>prefers-color-scheme</code> CSS media feature</a>.</p>
</blockquote>
<p><block class="androidNote devNotes" /></p>
<blockquote>
<p>The color scheme preference will map to the user's Light or <a href="https://developer.android.com/guide/topics/ui/look-and-feel/darktheme">Dark theme</a> preference on Android 10 (API level 29) devices and higher.</p>
</blockquote>
<p><block class="iosNote devNotes" /></p>
<blockquote>
<p>The color scheme preference will map to the user's Light or <a href="https://developer.apple.com/design/human-interface-guidelines/ios/visual-design/dark-mode/">Dark Mode</a> preference on iOS 13 devices and higher.</p>
</blockquote>
<p><block class="endBlock devNotes" /></p>
<h3><a class="anchor" aria-hidden="true" id="usecolorscheme-hook"></a><a href="#usecolorscheme-hook" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a><code>useColorScheme</code> Hook</h3>
<p>The <code>useColorScheme</code> React hook provides and subscribes to color scheme updates:</p>
<pre><code class="hljs css language-jsx"><span class="token keyword">import</span> <span class="token punctuation">{</span>Text<span class="token punctuation">,</span> useColorScheme<span class="token punctuation">}</span> <span class="token keyword">from</span> <span class="token string">'react-native'</span><span class="token punctuation">;</span>
<span class="token keyword">const</span> <span class="token function-variable function">MyComponent</span> <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">{</span>
<span class="token keyword">const</span> colorScheme <span class="token operator">=</span> <span class="token function">useColorScheme</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token keyword">return</span> <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span><span class="token class-name">Text</span></span><span class="token punctuation">></span></span><span class="token plain-text">useColorScheme(): </span><span class="token punctuation">{</span>colorScheme<span class="token punctuation">}</span><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span><span class="token class-name">Text</span></span><span class="token punctuation">></span></span><span class="token punctuation">;</span>
<span class="token punctuation">}</span><span class="token punctuation">;</span>
</code></pre>
<p>You can find a complete example that demonstrates the use of this hook alongside a React context to add support for light and dark themes to your application in <a href="https://github.com/facebook/react-native/blob/master/RNTester/js/examples/Appearance/AppearanceExample.js"><code>AppearanceExample.js</code></a>.</p>
<h1><a class="anchor" aria-hidden="true" id="reference"></a><a href="#reference" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Reference</h1>
<h2><a class="anchor" aria-hidden="true" id="methods"></a><a href="#methods" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Methods</h2>
<h3><a class="anchor" aria-hidden="true" id="getcolorscheme"></a><a href="#getcolorscheme" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a><code>getColorScheme()</code></h3>
<pre><code class="hljs css language-jsx"><span class="token keyword">static</span> <span class="token function">getColorScheme</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
</code></pre>
<p>Indicates the current user preferred color scheme. The value may be updated later, either through direct user action (e.g. theme selection in device settings) or on a schedule (e.g. light and dark themes that follow the day/night cycle).</p>
<p>Supported color schemes:</p>
<ul>
<li><code>light</code>: The user prefers a light color theme.</li>
<li><code>dark</code>: The user prefers a dark color theme.</li>
<li>null: The user has not indicated a preferred color theme.</li>
</ul>
<p>See also: <code>useColorScheme</code> hook.</p>
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