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@@ -22,6 +22,10 @@
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var toggler = document.querySelector(togglerSelector);
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var target = document.querySelector(targetSelector);
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if (!toggler) {
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return;
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}
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toggler.onclick = function(event) {
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event.preventDefault();
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@@ -38,7 +42,7 @@
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<p>Certain components may have properties that work on one platform only. All of these props are annotated with <code>@platform</code> and have a small badge next to them on the website.</p>
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<h2><a class="anchor" aria-hidden="true" id="platform-module"></a><a href="#platform-module" 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>Platform module</h2>
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<p>React Native provides a module that detects the platform in which the app is running. You can use the detection logic to implement platform-specific code. Use this option when only small parts of a component are platform-specific.</p>
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<pre><code class="hljs css languages- javascript"><span class="hljs-keyword">import</span> {Platform, StyleSheet} <span class="hljs-keyword">from</span> <span class="hljs-string">'react-native'</span>;
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<pre><code class="hljs css language-javascript"><span class="hljs-keyword">import</span> {Platform, StyleSheet} <span class="hljs-keyword">from</span> <span class="hljs-string">'react-native'</span>;
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<span class="hljs-keyword">const</span> styles = StyleSheet.create({
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<span class="hljs-attr">height</span>: Platform.OS === <span class="hljs-string">'ios'</span> ? <span class="hljs-number">200</span> : <span class="hljs-number">100</span>,
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@@ -46,7 +50,7 @@
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</code></pre>
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<p><code>Platform.OS</code> will be <code>ios</code> when running on iOS and <code>android</code> when running on Android.</p>
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<p>There is also a <code>Platform.select</code> method available, that given an object containing Platform.OS as keys, returns the value for the platform you are currently running on.</p>
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<pre><code class="hljs css languages- javascript"><span class="hljs-keyword">import</span> {Platform, StyleSheet} <span class="hljs-keyword">from</span> <span class="hljs-string">'react-native'</span>;
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<pre><code class="hljs css language-javascript"><span class="hljs-keyword">import</span> {Platform, StyleSheet} <span class="hljs-keyword">from</span> <span class="hljs-string">'react-native'</span>;
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<span class="hljs-keyword">const</span> styles = StyleSheet.create({
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<span class="hljs-attr">container</span>: {
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@@ -64,7 +68,7 @@
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</code></pre>
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<p>This will result in a container having <code>flex: 1</code> on both platforms, a red background color on iOS, and a blue background color on Android.</p>
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<p>Since it accepts <code>any</code> value, you can also use it to return platform specific component, like below:</p>
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<pre><code class="hljs css languages- javascript"><span class="hljs-keyword">const</span> Component = Platform.select({
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<pre><code class="hljs css language-javascript"><span class="hljs-keyword">const</span> Component = Platform.select({
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<span class="hljs-attr">ios</span>: <span class="hljs-function"><span class="hljs-params">()</span> =></span> <span class="hljs-built_in">require</span>(<span class="hljs-string">'ComponentIOS'</span>),
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<span class="hljs-attr">android</span>: <span class="hljs-function"><span class="hljs-params">()</span> =></span> <span class="hljs-built_in">require</span>(<span class="hljs-string">'ComponentAndroid'</span>),
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})();
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@@ -73,7 +77,7 @@
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</span></code></pre>
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<h3><a class="anchor" aria-hidden="true" id="detecting-the-android-version"></a><a href="#detecting-the-android-version" 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>Detecting the Android version</h3>
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<p>On Android, the <code>Platform</code> module can also be used to detect the version of the Android Platform in which the app is running:</p>
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<pre><code class="hljs css languages- javascript"><span class="hljs-keyword">import</span> {Platform} <span class="hljs-keyword">from</span> <span class="hljs-string">'react-native'</span>;
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<pre><code class="hljs css language-javascript"><span class="hljs-keyword">import</span> {Platform} <span class="hljs-keyword">from</span> <span class="hljs-string">'react-native'</span>;
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<span class="hljs-keyword">if</span> (Platform.Version === <span class="hljs-number">25</span>) {
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<span class="hljs-built_in">console</span>.log(<span class="hljs-string">'Running on Nougat!'</span>);
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@@ -81,7 +85,7 @@
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</code></pre>
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<h3><a class="anchor" aria-hidden="true" id="detecting-the-ios-version"></a><a href="#detecting-the-ios-version" 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>Detecting the iOS version</h3>
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<p>On iOS, the <code>Version</code> is a result of <code>-[UIDevice systemVersion]</code>, which is a string with the current version of the operating system. An example of the system version is "10.3". For example, to detect the major version number on iOS:</p>
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<pre><code class="hljs css languages- javascript"><span class="hljs-keyword">import</span> {Platform} <span class="hljs-keyword">from</span> <span class="hljs-string">'react-native'</span>;
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<pre><code class="hljs css language-javascript"><span class="hljs-keyword">import</span> {Platform} <span class="hljs-keyword">from</span> <span class="hljs-string">'react-native'</span>;
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<span class="hljs-keyword">const</span> majorVersionIOS = <span class="hljs-built_in">parseInt</span>(Platform.Version, <span class="hljs-number">10</span>);
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<span class="hljs-keyword">if</span> (majorVersionIOS <= <span class="hljs-number">9</span>) {
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@@ -91,11 +95,11 @@
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<h2><a class="anchor" aria-hidden="true" id="platform-specific-extensions"></a><a href="#platform-specific-extensions" 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>Platform-specific extensions</h2>
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<p>When your platform-specific code is more complex, you should consider splitting the code out into separate files. React Native will detect when a file has a <code>.ios.</code> or <code>.android.</code> extension and load the relevant platform file when required from other components.</p>
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<p>For example, say you have the following files in your project:</p>
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<pre><code class="hljs css languages- sh">BigButton.ios.js
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<pre><code class="hljs css language-sh">BigButton.ios.js
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BigButton.android.js
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</code></pre>
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<p>You can then require the component as follows:</p>
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<pre><code class="hljs css languages- javascript"><span class="hljs-keyword">const</span> BigButton = <span class="hljs-built_in">require</span>(<span class="hljs-string">'./BigButton'</span>);
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<pre><code class="hljs css language-javascript"><span class="hljs-keyword">const</span> BigButton = <span class="hljs-built_in">require</span>(<span class="hljs-string">'./BigButton'</span>);
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</code></pre>
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<p>React Native will automatically pick up the right file based on the running platform.</p>
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</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/react-native/docs/components-and-apis">← Components and APIs</a><a class="docs-next button" href="/react-native/docs/navigation">Navigating Between Screens →</a></div></div></div></div><footer class="nav-footer" id="footer"><section class="sitemap"><a href="/react-native/" class="nav-home"><img src="/react-native/img/header_logo.png" alt="React Native" width="66" height="58"/></a><div><h5><a href="/react-native/docs/getting-started.html">Docs</a></h5><a href="/react-native/docs/getting-started.html">Getting Started</a><a href="/react-native/docs/tutorial.html">Tutorial</a><a href="/react-native/docs/components-and-apis.html">Components and APIs</a><a href="/react-native/docs/more-resources.html">More Resources</a></div><div><h5><a href="/react-native/help.html">Community</a></h5><a href="/react-native/showcase.html">Who's using React Native?</a><a href="http://stackoverflow.com/questions/tagged/react-native" target="_blank">Stack Overflow</a><a href="https://discuss.reactjs.org" target="_blank">Discussion Forum</a><a href="https://discord.gg/0ZcbPKXt5bZjGY5n">Reactiflux Chat</a></div><div><h5>More</h5><a href="/react-native/blog">Blog</a><a href="https://twitter.com/reactnative" target="_blank">Twitter</a><a href="https://github.com/facebook/react-native" target="_blank">GitHub</a><a href="http://reactjs.org" target="_blank">React</a></div></section><a href="https://code.facebook.com/projects/" target="_blank" class="fbOpenSource"><img src="/react-native/img/oss_logo.png" alt="Facebook Open Source" width="170" height="45"/></a><section class="copyright">Copyright © 2018 Facebook Inc.</section></footer></div><script type="text/javascript" src="https://cdn.jsdelivr.net/docsearch.js/1/docsearch.min.js"></script><script>window.fbAsyncInit = function() {FB.init({appId:'1677033832619985',xfbml:true,version:'v2.7'});};(function(d, s, id){var js, fjs = d.getElementsByTagName(s)[0];if (d.getElementById(id)) {return;}js = d.createElement(s); js.id = id;js.src = '//connect.facebook.net/en_US/sdk.js';fjs.parentNode.insertBefore(js, fjs);}(document, 'script','facebook-jssdk'));
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