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<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>AccessibilityInfo · React Native</title><meta name="viewport" content="width=device-width"/><meta name="generator" content="Docusaurus"/><meta name="description" content="Sometimes it&#x27;s useful to know whether or not the device has a screen reader that is currently active. The `AccessibilityInfo` API is designed for this purpose. You can use it to query the current state of the screen reader as well as to register to be notified when the state of the screen reader changes."/><meta name="docsearch:version" content="0.21"/><meta name="docsearch:language" content="en"/><meta property="og:title" content="AccessibilityInfo · React Native"/><meta property="og:type" content="website"/><meta property="og:url" content="https://reactnative.dev/"/><meta property="og:description" content="Sometimes it&#x27;s useful to know whether or not the device has a screen reader that is currently active. The `AccessibilityInfo` API is designed for this purpose. You can use it to query the current state of the screen reader as well as to register to be notified when the state of the screen reader changes."/><meta property="og:image" content="https://reactnative.dev/img/logo-og.png"/><meta name="twitter:card" content="summary"/><meta name="twitter:image" content="https://reactnative.dev/img/logo-og.png"/><link rel="shortcut icon" href="/img/favicon.ico"/><link rel="stylesheet" href="https://cdn.jsdelivr.net/docsearch.js/1/docsearch.min.css"/><link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/solarized-dark.min.css"/><link rel="alternate" type="application/atom+xml" href="https://reactnative.dev/blog/atom.xml" title="React Native Blog ATOM Feed"/><link rel="alternate" type="application/rss+xml" href="https://reactnative.dev/blog/feed.xml" title="React Native Blog RSS Feed"/><script>
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</script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/prism.css"/><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head><body class="sideNavVisible separateOnPageNav"><div class="fixedHeaderContainer"><div class="headerWrapper wrapper"><header><a href="/"><img class="logo" src="/img/header_logo.svg" alt="React Native"/><h2 class="headerTitleWithLogo">React Native</h2></a><a href="/versions"><h3>0.21</h3></a><div class="navigationWrapper navigationSlider"><nav class="slidingNav"><ul class="nav-site nav-site-internal"><li class=""><a href="/docs/0.21/getting-started" target="_self">Docs</a></li><li class=""><a href="/docs/0.21/components-and-apis" target="_self">Components</a></li><li class="siteNavItemActive"><a href="/docs/0.21/accessibilityinfo" target="_self">API</a></li><li class=""><a href="/help" target="_self">Community</a></li><li class=""><a href="/blog/" target="_self">Blog</a></li><li class="navSearchWrapper reactNavSearchWrapper"><input type="text" id="search_input_react" placeholder="Search" title="Search"/></li><li class=""><a href="https://github.com/facebook/react-native" target="_self">GitHub</a></li></ul></nav></div></header></div></div><div class="navPusher"><div class="docMainWrapper wrapper"><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/accessibilityinfo.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 id="__docusaurus" class="postHeaderTitle">AccessibilityInfo</h1></header><article><div><span><p>Sometimes it's useful to know whether or not the device has a screen reader that is currently active. The <code>AccessibilityInfo</code> API is designed for this purpose. You can use it to query the current state of the screen reader as well as to register to be notified when the state of the screen reader changes.</p>
<p>Here's a small example illustrating how to use <code>AccessibilityInfo</code>:</p>
<pre><code class="hljs css language-jsx"><span class="token keyword">class</span> <span class="token class-name">ScreenReaderStatusExample</span> <span class="token keyword">extends</span> <span class="token class-name">React<span class="token punctuation">.</span>Component</span> <span class="token punctuation">{</span>
state <span class="token operator">=</span> <span class="token punctuation">{</span>
screenReaderEnabled<span class="token operator">:</span> <span class="token boolean">false</span>
<span class="token punctuation">}</span><span class="token punctuation">;</span>
<span class="token function">componentDidMount</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
AccessibilityInfo<span class="token punctuation">.</span><span class="token function">addEventListener</span><span class="token punctuation">(</span>
<span class="token string">'change'</span><span class="token punctuation">,</span>
<span class="token keyword">this</span><span class="token punctuation">.</span>_handleScreenReaderToggled
<span class="token punctuation">)</span><span class="token punctuation">;</span>
AccessibilityInfo<span class="token punctuation">.</span><span class="token function">fetch</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">done</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token parameter">isEnabled</span><span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">{</span>
<span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">setState</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
screenReaderEnabled<span class="token operator">:</span> isEnabled
<span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>
<span class="token function">componentWillUnmount</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
AccessibilityInfo<span class="token punctuation">.</span><span class="token function">removeEventListener</span><span class="token punctuation">(</span>
<span class="token string">'change'</span><span class="token punctuation">,</span>
<span class="token keyword">this</span><span class="token punctuation">.</span>_handleScreenReaderToggled
<span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>
<span class="token function-variable function">_handleScreenReaderToggled</span> <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token parameter">isEnabled</span><span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">{</span>
<span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">setState</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
screenReaderEnabled<span class="token operator">:</span> isEnabled
<span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span><span class="token punctuation">;</span>
<span class="token function">render</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 punctuation">(</span>
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span><span class="token class-name">View</span></span><span class="token punctuation">></span></span><span class="token plain-text">
</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">
The screen reader is</span><span class="token punctuation">{</span><span class="token string">' '</span><span class="token punctuation">}</span><span class="token plain-text">
</span><span class="token punctuation">{</span><span class="token keyword">this</span><span class="token punctuation">.</span>state<span class="token punctuation">.</span>screenReaderEnabled
<span class="token operator">?</span> <span class="token string">'enabled'</span>
<span class="token operator">:</span> <span class="token string">'disabled'</span><span class="token punctuation">}</span><span class="token plain-text">
.
</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">
</span><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span><span class="token class-name">View</span></span><span class="token punctuation">></span></span>
<span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>
<span class="token punctuation">}</span>
</code></pre>
<h3><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</h3>
<ul>
<li><a href="/docs/0.21/accessibilityinfo#fetch"><code>fetch</code></a></li>
<li><a href="/docs/0.21/accessibilityinfo#addeventlistener"><code>addEventListener</code></a></li>
<li><a href="/docs/0.21/accessibilityinfo#setaccessibilityfocus"><code>setAccessibilityFocus</code></a></li>
<li><a href="/docs/0.21/accessibilityinfo#announceforaccessibility"><code>announceForAccessibility</code></a></li>
<li><a href="/docs/0.21/accessibilityinfo#removeeventlistener"><code>removeEventListener</code></a></li>
</ul>
<hr>
<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-1"></a><a href="#methods-1" 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="fetch"></a><a href="#fetch" 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>fetch()</code></h3>
<pre><code class="hljs css language-jsx">AccessibilityInfo<span class="token punctuation">.</span><span class="token function">fetch</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<p>Query whether a screen reader is currently enabled. Returns a promise which resolves to a boolean. The result is <code>true</code> when a screen reader is enabled and <code>false</code> otherwise.</p>
<hr>
<h3><a class="anchor" aria-hidden="true" id="addeventlistener"></a><a href="#addeventlistener" 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>addEventListener()</code></h3>
<pre><code class="hljs css language-jsx">AccessibilityInfo<span class="token punctuation">.</span><span class="token function">addEventListener</span><span class="token punctuation">(</span>eventName<span class="token punctuation">,</span> handler<span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<p>Add an event handler.</p>
<table>
<thead>
<tr><th>Name</th><th>Type</th><th>Required</th><th>Description</th></tr>
</thead>
<tbody>
<tr><td>eventName</td><td>string</td><td>Yes</td><td>Name of the event</td></tr>
<tr><td>handler</td><td>function</td><td>Yes</td><td>Event handler</td></tr>
</tbody>
</table>
<p>Supported events:</p>
<ul>
<li><code>change</code>: Fires when the state of the screen reader changes. The argument to the event handler is a boolean. The boolean is <code>true</code> when a screen reader is enabled and <code>false</code> otherwise.</li>
<li><code>announcementFinished</code>: iOS-only event. Fires when the screen reader has finished making an announcement. The argument to the event handler is a dictionary with these keys:
<ul>
<li><code>announcement</code>: The string announced by the screen reader.</li>
<li><code>success</code>: A boolean indicating whether the announcement was successfully made.</li>
</ul></li>
</ul>
<hr>
<h3><a class="anchor" aria-hidden="true" id="setaccessibilityfocus"></a><a href="#setaccessibilityfocus" 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>setAccessibilityFocus()</code></h3>
<pre><code class="hljs css language-jsx">AccessibilityInfo<span class="token punctuation">.</span><span class="token function">setAccessibilityFocus</span><span class="token punctuation">(</span>reactTag<span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<p>Set accessibility focus to a React component.</p>
<table>
<thead>
<tr><th>Name</th><th>Type</th><th>Required</th><th>Description</th></tr>
</thead>
<tbody>
<tr><td>reactTag</td><td>number</td><td>Yes</td><td>React component tag</td></tr>
</tbody>
</table>
<table>
<thead>
<tr><th>Platform</th></tr>
</thead>
<tbody>
<tr><td>iOS</td></tr>
</tbody>
</table>
<hr>
<h3><a class="anchor" aria-hidden="true" id="announceforaccessibility"></a><a href="#announceforaccessibility" 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>announceForAccessibility()</code></h3>
<pre><code class="hljs css language-jsx">AccessibilityInfo<span class="token punctuation">.</span><span class="token function">announceForAccessibility</span><span class="token punctuation">(</span>announcement<span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<p>Post a string to be announced by the screen reader.</p>
<table>
<thead>
<tr><th>Name</th><th>Type</th><th>Required</th><th>Description</th></tr>
</thead>
<tbody>
<tr><td>announcement</td><td>string</td><td>Yes</td><td>String to be announced</td></tr>
</tbody>
</table>
<table>
<thead>
<tr><th>Platform</th></tr>
</thead>
<tbody>
<tr><td>iOS</td></tr>
</tbody>
</table>
<hr>
<h3><a class="anchor" aria-hidden="true" id="removeeventlistener"></a><a href="#removeeventlistener" 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>removeEventListener()</code></h3>
<pre><code class="hljs css language-jsx">AccessibilityInfo<span class="token punctuation">.</span><span class="token function">removeEventListener</span><span class="token punctuation">(</span>eventName<span class="token punctuation">,</span> handler<span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<p>Remove an event handler.</p>
<table>
<thead>
<tr><th>Name</th><th>Type</th><th>Required</th><th>Description</th></tr>
</thead>
<tbody>
<tr><td>eventName</td><td>string</td><td>Yes</td><td>Name of the event</td></tr>
<tr><td>handler</td><td>function</td><td>Yes</td><td>Event handler</td></tr>
</tbody>
</table>
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