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markdown"><header><h1>Platform-Specific Code</h1></header><p>When building a cross-platform app, you'll want to re-use as much code as possible. Scenarios may arise where it makes sense for the code to be different, for example you may want to implement separate visual components for Android and iOS.</p> 5<p>React Native provides two ways to organize your code and separate it by platform:</p> 6<ul> 7<li>Using the <a href=/docs/platform-specific-code#platform-module><code>Platform</code> module</a>.</li> 8<li>Using <a href=/docs/platform-specific-code#platform-specific-extensions>platform-specific file extensions</a>.</li> 9</ul> 10<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> 11<h2 class="anchor anchorWithStickyNavbar_JmGV" id=platform-module>Platform module<a href=#platform-module class=hash-link aria-label="Direct link to Platform module" title="Direct link to Platform module">​</a></h2> 12<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> 13<div class="language-tsx codeBlockContainer_mQmQ theme-code-block" style=--prism-color:#FFFFFF;--prism-background-color:#282C34><div class=codeBlockTitle_kY6l>tsx</div><div class=codeBlockContent_t_Hd><pre tabindex=0 class="prism-code language-tsx codeBlock_RMoD thin-scrollbar" style=color:#FFFFFF;background-color:#282C34><code class=codeBlockLines_AclH><span class=token-line style=color:#FFFFFF><span class="token keyword" style=color:#c5a5c5>import</span><span class="token plain"> </span><span class="token imports punctuation" style=color:#657b83>{</span><span class="token imports maybe-class-name">Platform</span><span class="token imports punctuation" style=color:#657b83>,</span><span class="token imports"> </span><span class="token imports maybe-class-name">StyleSheet</span><span class="token imports 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>'react-native'</span><span class="token punctuation" style=color:#657b83>;</span><span class="token plain"></span><br></span><span class=token-line style=color:#FFFFFF><span class="token plain" style=display:inline-block></span><br></span><span class=token-line style=color:#FFFFFF><span class="token plain"></span><span class="token keyword" style=color:#c5a5c5>const</span><span class="token plain"> styles </span><span class="token operator" style=color:#fc929e>=</span><span class="token plain"> </span><span class="token maybe-class-name">StyleSheet</span><span class="token punctuation" style=color:#657b83>.</span><span class="token method function property-access" style=color:#79b6f2>create</span><span class="token punctuation" style=color:#657b83>(</span><span class="token punctuation" style=color:#657b83>{</span><span class="token plain"></span><br></span><span class=token-line style=color:#FFFFFF><span class="token plain"> height</span><span class="token operator" style=color:#fc929e>:</span><span class="token plain"> </span><span class="token maybe-class-name">Platform</span><span class="token punctuation" style=color:#657b83>.</span><span class="token constant" style=color:#5a9bcf>OS</span><span class="token plain"> </span><span class="token operator" style=color:#fc929e>===</span><span class="token plain"> </span><span class="token string" style=color:#8dc891>'ios'</span><span class="token plain"> </span><span class="token operator" style=color:#fc929e>?</span><span class="token plain"> </span><span class="token number" style=color:#5a9bcf>200</span><span class="token plain"> </span><span class="token operator" style=color:#fc929e>:</span><span class="token plain"> </span><span class="token number" style=color:#5a9bcf>100</span><span class="token punctuation" style=color:#657b83>,</span><span class="token plain"></span><br></span><span class=token-line style=color:#FFFFFF><span class="token plain"></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><br></span></code></pre></div></div> 14<p><code>Platform.OS</code> will be <code>ios</code> when running on iOS and <code>android</code> when running on Android.</p> 15<p>There is also a <code>Platform.select</code> method available that, given an object where keys can be one of <code>'ios' | 'android' | 'native' | 'default'</code>, returns the most fitting value for the platform you are currently running on. That is, if you're running on a phone, <code>ios</code> and <code>android</code> keys will take preference. If those are not specified, <code>native</code> key will be used and then the <code>default</code> key.</p> 16<div class="language-tsx codeBlockContainer_mQmQ theme-code-block" style=--prism-color:#FFFFFF;--prism-background-color:#282C34><div class=codeBlockTitle_kY6l>tsx</div><div class=codeBlockContent_t_Hd><pre tabindex=0 class="prism-code language-tsx codeBlock_RMoD thin-scrollbar" style=color:#FFFFFF;background-color:#282C34><code class=codeBlockLines_AclH><span class=token-line style=color:#FFFFFF><span class="token keyword" style=color:#c5a5c5>import</span><span class="token plain"> </span><span class="token imports punctuation" style=color:#657b83>{</span><span class="token imports maybe-class-name">Platform</span><span class="token imports punctuation" style=color:#657b83>,</span><span class="token imports"> </span><span class="token imports maybe-class-name">StyleSheet</span><span class="token imports 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>'react-native'</span><span class="token punctuation" style=color:#657b83>;</span><span class="token plain"></span><br></span><span class=token-line style=color:#FFFFFF><span class="token plain" style=display:inline-block></span><br></span><span class=token-line style=color:#FFFFFF><span class="token plain"></span><span class="token keyword" style=color:#c5a5c5>const</span><span class="token plain"> styles </span><span class="token operator" style=color:#fc929e>=</span><span class="token plain"> </span><span class="token maybe-class-name">StyleSheet</span><span class="token punctuation" style=color:#657b83>.</span><span class="token method function property-access" style=color:#79b6f2>create</span><span class="token punctuation" style=color:#657b83>(</span><span class="token punctuation" style=color:#657b83>{</span><span class="token plain"></span><br></span><span class=token-line style=color:#FFFFFF><span class="token plain"> container</span><span class="token operator" style=color:#fc929e>:</span><span class="token plain"> </span><span class="token punctuation" style=color:#657b83>{</span><span class="token plain"></span><br></span><span class=token-line style=color:#FFFFFF><span class="token plain"> flex</span><span class="token operator" style=color:#fc929e>:</span><span class="token plain"> </span><span class="token number" style=color:#5a9bcf>1</span><span class="token punctuation" style=color:#657b83>,</span><span class="token plain"></span><br></span><span class=token-line style=color:#FFFFFF><span class="token plain"> </span><span class="token spread operator" style=color:#fc929e>...</span><span class="token maybe-class-name">Platform</span><span class="token punctuation" style=color:#657b83>.</span><span class="token method function property-access" style=color:#79b6f2>select</span><span class="token punctuation" style=color:#657b83>(</span><span class="token punctuation" style=color:#657b83>{</span><span class="token plain"></span><br></span><span class=token-line style=color:#FFFFFF><span class="token plain"> ios</span><span class="token operator" style=color:#fc929e>:</span><span class="token plain"> </span><span class="token punctuation" style=color:#657b83>{</span><span class="token plain"></span><br></span><span class=token-line style=color:#FFFFFF><span class="token plain"> backgroundColor</span><span class="token operator" style=color:#fc929e>:</span><span class="token plain"> </span><span class="token string" style=color:#8dc891>'red'</span><span class="token punctuation" style=color:#657b83>,</span><span class="token plain"></span><br></span><span class=token-line style=color:#FFFFFF><span class="token plain"> </span><span class="token punctuation" style=color:#657b83>}</span><span class="token punctuation" style=color:#657b83>,</span><span class="token plain"></span><br></span><span class=token-line style=color:#FFFFFF><span class="token plain"> android</span><span class="token operator" style=color:#fc929e>:</span><span class="token plain"> </span><span class="token punctuation" style=color:#657b83>{</span><span class="token plain"></span><br></span><span class=token-line style=color:#FFFFFF><span class="token plain"> backgroundColor</span><span class="token operator" style=color:#fc929e>:</span><span class="token plain"> </span><span class="token string" style=color:#8dc891>'green'</span><span class="token punctuation" style=color:#657b83>,</span><span class="token plain"></span><br></span><span class=token-line style=color:#FFFFFF><span class="token plain"> </span><span class="token punctuation" style=color:#657b83>}</span><span class="token punctuation" style=color:#657b83>,</span><span class="token plain"></span><br></span><span class=token-line style=color:#FFFFFF><span class="token plain"> </span><span class="token keyword" style=color:#c5a5c5>default</span><span class="token operator" style=color:#fc929e>:</span><span class="token plain"> </span><span class="token punctuation" style=color:#657b83>{</span><span class="token plain"></span><br></span><span class=token-line style=color:#FFFFFF><span class="token plain"> </span><span class="token comment" style=color:#93a1a1>// other platforms, web for example</span><span class="token plain"></span><br></span><span class=token-line style=color:#FFFFFF><span class="token plain"> backgroundColor</span><span class="token operator" style=color:#fc929e>:</span><span class="token plain"> </span><span class="token string" style=color:#8dc891>'blue'</span><span class="token punctuation" style=color:#657b83>,</span><span class="token plain"></span><br></span><span class=token-line style=color:#FFFFFF><span class="token plain"> </span><span class="token punctuation" style=color:#657b83>}</span><span class="token punctuation" style=color:#657b83>,</span><span class="token plain"></span><br></span><span class=token-line style=color:#FFFFFF><span class="token plain"> </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"></span><br></span><span class=token-line style=color:#FFFFFF><span class="token plain"> </span><span class="token punctuation" style=color:#657b83>}</span><span class="token punctuation" style=color:#657b83>,</span><span class="token plain"></span><br></span><span class=token-line style=color:#FFFFFF><span class="token plain"></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><br></span></code></pre></div></div> 17<p>This will result in a container having <code>flex: 1</code> on all platforms, a red background color on iOS, a green background color on Android, and a blue background color on other platforms.</p> 18<p>Since it accepts <code>any</code> value, you can also use it to return platform-specific components, like below:</p> 19<div class="language-tsx codeBlockContainer_mQmQ theme-code-block" style=--prism-color:#FFFFFF;--prism-background-color:#282C34><div class=codeBlockTitle_kY6l>tsx</div><div class=codeBlockContent_t_Hd><pre tabindex=0 class="prism-code language-tsx codeBlock_RMoD thin-scrollbar" style=color:#FFFFFF;background-color:#282C34><code class=codeBlockLines_AclH><span class=token-line style=color:#FFFFFF><span class="token keyword" style=color:#c5a5c5>const</span><span class="token plain"> </span><span class="token maybe-class-name">Component</span><span class="token plain"> </span><span class="token operator" style=color:#fc929e>=</span><span class="token plain"> </span><span class="token maybe-class-name">Platform</span><span class="token punctuation" style=color:#657b83>.</span><span class="token method function property-access" style=color:#79b6f2>select</span><span class="token punctuation" style=color:#657b83>(</span><span class="token punctuation" style=color:#657b83>{</span><span class="token plain"></span><br></span><span class=token-line style=color:#FFFFFF><span class="token plain"> </span><span class="token function-variable function" style=color:#79b6f2>ios</span><span class="token operator" style=color:#fc929e>:</span><span class="token plain"> </span><span class="token punctuation" style=color:#657b83>(</span><span class="token punctuation" style=color:#657b83>)</span><span class="token plain"> </span><span class="token arrow operator" style=color:#fc929e>=></span><span class="token plain"> </span><span class="token keyword" style=color:#c5a5c5>require</span><span class="token punctuation" style=color:#657b83>(</span><span class="token string" style=color:#8dc891>'ComponentIOS'</span><span class="token punctuation" style=color:#657b83>)</span><span class="token punctuation" style=color:#657b83>,</span><span class="token plain"></span><br></span><span class=token-line style=color:#FFFFFF><span class="token plain"> </span><span class="token function-variable function" style=color:#79b6f2>android</span><span class="token operator" style=color:#fc929e>:</span><span class="token plain"> </span><span class="token punctuation" style=color:#657b83>(</span><span class="token punctuation" style=color:#657b83>)</span><span class="token plain"> </span><span class="token arrow operator" style=color:#fc929e>=></span><span class="token plain"> </span><span class="token keyword" style=color:#c5a5c5>require</span><span class="token punctuation" style=color:#657b83>(</span><span class="token string" style=color:#8dc891>'ComponentAndroid'</span><span class="token punctuation" style=color:#657b83>)</span><span class="token punctuation" style=color:#657b83>,</span><span class="token plain"></span><br></span><span class=token-line style=color:#FFFFFF><span class="token plain"></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 punctuation" style=color:#657b83>)</span><span class="token punctuation" style=color:#657b83>;</span><span class="token plain"></span><br></span><span class=token-line style=color:#FFFFFF><span class="token plain" style=display:inline-block></span><br></span><span class=token-line style=color:#FFFFFF><span class="token plain"></span><span class="token tag punctuation" style=color:#657b83>&lt;</span><span class="token tag class-name" style=color:#fac863>Component</span><span class="token tag" style=color:#fc929e> </span><span class="token tag punctuation" style=color:#657b83>/></span><span class="token punctuation" style=color:#657b83>;</span><br></span></code></pre></div></div> 20<div class="language-tsx codeBlockContainer_mQmQ theme-code-block" style=--prism-color:#FFFFFF;--prism-background-color:#282C34><div class=codeBlockTitle_kY6l>tsx</div><div class=codeBlockContent_t_Hd><pre tabindex=0 class="prism-code language-tsx codeBlock_RMoD thin-scrollbar" style=color:#FFFFFF;background-color:#282C34><code class=codeBlockLines_AclH><span class=token-line style=color:#FFFFFF><span class="token keyword" style=color:#c5a5c5>const</span><span class="token plain"> </span><span class="token maybe-class-name">Component</span><span class="token plain"> </span><span class="token operator" style=color:#fc929e>=</span><span class="token plain"> </span><span class="token maybe-class-name">Platform</span><span class="token punctuation" style=color:#657b83>.</span><span class="token method function property-access" style=color:#79b6f2>select</span><span class="token punctuation" style=color:#657b83>(</span><span class="token punctuation" style=color:#657b83>{</span><span class="token plain"></span><br></span><span class=token-line style=color:#FFFFFF><span class="token plain"> </span><span class="token function-variable function" style=color:#79b6f2>native</span><span class="token operator" style=color:#fc929e>:</span><span class="token plain"> </span><span class="token punctuation" style=color:#657b83>(</span><span class="token punctuation" style=color:#657b83>)</span><span class="token plain"> </span><span class="token arrow operator" style=color:#fc929e>=></span><span class="token plain"> </span><span class="token keyword" style=color:#c5a5c5>require</span><span class="token punctuation" style=color:#657b83>(</span><span class="token string" style=color:#8dc891>'ComponentForNative'</span><span class="token punctuation" style=color:#657b83>)</span><span class="token punctuation" style=color:#657b83>,</span><span class="token plain"></span><br></span><span class=token-line style=color:#FFFFFF><span class="token plain"> </span><span class="token function-variable function" style=color:#79b6f2>default</span><span class="token operator" style=color:#fc929e>:</span><span class="token plain"> </span><span class="token punctuation" style=color:#657b83>(</span><span class="token punctuation" style=color:#657b83>)</span><span class="token plain"> </span><span class="token arrow operator" style=color:#fc929e>=></span><span class="token plain"> </span><span class="token keyword" style=color:#c5a5c5>require</span><span class="token punctuation" style=color:#657b83>(</span><span class="token string" style=color:#8dc891>'ComponentForWeb'</span><span class="token punctuation" style=color:#657b83>)</span><span class="token punctuation" style=color:#657b83>,</span><span class="token plain"></span><br></span><span class=token-line style=color:#FFFFFF><span class="token plain"></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 punctuation" style=color:#657b83>)</span><span class="token punctuation" style=color:#657b83>;</span><span class="token plain"></span><br></span><span class=token-line style=color:#FFFFFF><span class="token plain" style=display:inline-block></span><br></span><span class=token-line style=color:#FFFFFF><span class="token plain"></span><span class="token tag punctuation" style=color:#657b83>&lt;</span><span class="token tag class-name" style=color:#fac863>Component</span><span class="token tag" style=color:#fc929e> </span><span class="token tag punctuation" style=color:#657b83>/></span><span class="token punctuation" style=color:#657b83>;</span><br></span></code></pre></div></div> 21<h3 class="anchor anchorWithStickyNavbar_JmGV" id=detecting-the-android-version-android>Detecting the Android version <div class="label android" title="This section is related to Android platform">Android</div><a href=#detecting-the-android-version-android class=hash-link aria-label="Direct link to detecting-the-android-version-android" title="Direct link to detecting-the-android-version-android">​</a></h3> 22<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> 23<div class="language-tsx codeBlockContainer_mQmQ theme-code-block" style=--prism-color:#FFFFFF;--prism-background-color:#282C34><div class=codeBlockTitle_kY6l>tsx</div><div class=codeBlockContent_t_Hd><pre tabindex=0 class="prism-code language-tsx codeBlock_RMoD thin-scrollbar" style=color:#FFFFFF;background-color:#282C34><code class=codeBlockLines_AclH><span class=token-line style=color:#FFFFFF><span class="token keyword" style=color:#c5a5c5>import</span><span class="token plain"> </span><span class="token imports punctuation" style=color:#657b83>{</span><span class="token imports maybe-class-name">Platform</span><span class="token imports 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>'react-native'</span><span class="token punctuation" style=color:#657b83>;</span><span class="token plain"></span><br></span><span class=token-line style=color:#FFFFFF><span class="token plain" style=display:inline-block></span><br></span><span class=token-line style=color:#FFFFFF><span class="token plain"></span><span class="token keyword" style=color:#c5a5c5>if</span><span class="token plain"> </span><span class="token punctuation" style=color:#657b83>(</span><span class="token maybe-class-name">Platform</span><span class="token punctuation" style=color:#657b83>.</span><span class="token property-access maybe-class-name">Version</span><span class="token plain"> </span><span class="token operator" style=color:#fc929e>===</span><span class="token plain"> </span><span class="token number" style=color:#5a9bcf>25</span><span class="token punctuation" style=color:#657b83>)</span><span class="token plain"> </span><span class="token punctuation" style=color:#657b83>{</span><span class="token plain"></span><br></span><span class=token-line style=color:#FFFFFF><span class="token plain"> </span><span class="token console class-name" style=color:#fac863>console</span><span class="token punctuation" style=color:#657b83>.</span><span class="token method function property-access" style=color:#79b6f2>log</span><span class="token punctuation" style=color:#657b83>(</span><span class="token string" style=color:#8dc891>'Running on Nougat!'</span><span class="token punctuation" style=color:#657b83>)</span><span class="token punctuation" style=color:#657b83>;</span><span class="token plain"></span><br></span><span class=token-line style=color:#FFFFFF><span class="token plain"></span><span class="token punctuation" style=color:#657b83>}</span><br></span></code></pre></div></div> 24<p><strong>Note</strong>: <code>Version</code> is set to the Android API version not the Android OS version. To find a mapping please refer to <a href=https://en.wikipedia.org/wiki/Android_version_history#Overview target=_blank rel="noopener noreferrer">Android Version History</a>.</p> 25<h3 class="anchor anchorWithStickyNavbar_JmGV" id=detecting-the-ios-version-ios>Detecting the iOS version <div class="label ios" title="This section is related to iOS platform">iOS</div><a href=#detecting-the-ios-version-ios class=hash-link aria-label="Direct link to detecting-the-ios-version-ios" title="Direct link to detecting-the-ios-version-ios">​</a></h3> 26<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> 27<div class="language-tsx codeBlockContainer_mQmQ theme-code-block" style=--prism-color:#FFFFFF;--prism-background-color:#282C34><div class=codeBlockTitle_kY6l>tsx</div><div class=codeBlockContent_t_Hd><pre tabindex=0 class="prism-code language-tsx codeBlock_RMoD thin-scrollbar" style=color:#FFFFFF;background-color:#282C34><code class=codeBlockLines_AclH><span class=token-line style=color:#FFFFFF><span class="token keyword" style=color:#c5a5c5>import</span><span class="token plain"> </span><span class="token imports punctuation" style=color:#657b83>{</span><span class="token imports maybe-class-name">Platform</span><span class="token imports 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>'react-native'</span><span class="token punctuation" style=color:#657b83>;</span><span class="token plain"></span><br></span><span class=token-line style=color:#FFFFFF><span class="token plain" style=display:inline-block></span><br></span><span class=token-line style=color:#FFFFFF><span class="token plain"></span><span class="token keyword" style=color:#c5a5c5>const</span><span class="token plain"> majorVersionIOS </span><span class="token operator" style=color:#fc929e>=</span><span class="token plain"> </span><span class="token function" style=color:#79b6f2>parseInt</span><span class="token punctuation" style=color:#657b83>(</span><span class="token maybe-class-name">Platform</span><span class="token punctuation" style=color:#657b83>.</span><span class="token property-access maybe-class-name">Version</span><span class="token punctuation" style=color:#657b83>,</span><span class="token plain"> </span><span class="token number" style=color:#5a9bcf>10</span><span class="token punctuation" style=color:#657b83>)</span><span class="token punctuation" style=color:#657b83>;</span><span class="token plain"></span><br></span><span class=token-line style=color:#FFFFFF><span class="token plain"></span><span class="token keyword" style=color:#c5a5c5>if</span><span class="token plain"> </span><span class="token punctuation" style=color:#657b83>(</span><span class="token plain">majorVersionIOS </span><span class="token operator" style=color:#fc929e>&lt;=</span><span class="token plain"> </span><span class="token number" style=color:#5a9bcf>9</span><span class="token punctuation" style=color:#657b83>)</span><span class="token plain"> </span><span class="token punctuation" style=color:#657b83>{</span><span class="token plain"></span><br></span><span class=token-line style=color:#FFFFFF><span class="token plain"> </span><span class="token console class-name" style=color:#fac863>console</span><span class="token punctuation" style=color:#657b83>.</span><span class="token method function property-access" style=color:#79b6f2>log</span><span class="token punctuation" style=color:#657b83>(</span><span class="token string" style=color:#8dc891>'Work around a change in behavior'</span><span class="token punctuation" style=color:#657b83>)</span><span class="token punctuation" style=color:#657b83>;</span><span class="token plain"></span><br></span><span class=token-line style=color:#FFFFFF><span class="token plain"></span><span class="token punctuation" style=color:#657b83>}</span><br></span></code></pre></div></div> 28<h2 class="anchor anchorWithStickyNavbar_JmGV" id=platform-specific-extensions>Platform-specific extensions<a href=#platform-specific-extensions class=hash-link aria-label="Direct link to Platform-specific extensions" title="Direct link to Platform-specific extensions">​</a></h2> 29<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> 30<p>For example, say you have the following files in your project:</p> 31<div class="language-shell codeBlockContainer_mQmQ theme-code-block" style=--prism-color:#FFFFFF;--prism-background-color:#282C34><div class=codeBlockTitle_kY6l>shell</div><div class=codeBlockContent_t_Hd><pre tabindex=0 class="prism-code language-shell codeBlock_RMoD thin-scrollbar" style=color:#FFFFFF;background-color:#282C34><code class=codeBlockLines_AclH><span class=token-line style=color:#FFFFFF><span class="token plain">BigButton.ios.js</span><br></span><span class=token-line style=color:#FFFFFF><span class="token plain">BigButton.android.js</span><br></span></code></pre></div></div> 32<p>You can then import the component as follows:</p> 33<div class="language-tsx codeBlockContainer_mQmQ theme-code-block" style=--prism-color:#FFFFFF;--prism-background-color:#282C34><div class=codeBlockTitle_kY6l>tsx</div><div class=codeBlockContent_t_Hd><pre tabindex=0 class="prism-code language-tsx codeBlock_RMoD thin-scrollbar" style=color:#FFFFFF;background-color:#282C34><code class=codeBlockLines_AclH><span class=token-line style=color:#FFFFFF><span class="token keyword" style=color:#c5a5c5>import</span><span class="token plain"> </span><span class="token imports maybe-class-name">BigButton</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>'./BigButton'</span><span class="token punctuation" style=color:#657b83>;</span><br></span></code></pre></div></div> 34<p>React Native will automatically pick up the right file based on the running platform.</p> 35<h2 class="anchor anchorWithStickyNavbar_JmGV" id=native-specific-extensions-ie-sharing-code-with-nodejs-and-web>Native-specific extensions (i.e. sharing code with NodeJS and Web)<a href=#native-specific-extensions-ie-sharing-code-with-nodejs-and-web class=hash-link aria-label="Direct link to Native-specific extensions (i.e. sharing code with NodeJS and Web)" title="Direct link to Native-specific extensions (i.e. sharing code with NodeJS and Web)">​</a></h2> 36<p>You can also use the <code>.native.js</code> extension when a module needs to be shared between NodeJS/Web and React Native but it has no Android/iOS differences. This is especially useful for projects that have common code shared among React Native and ReactJS.</p> 37<p>For example, say you have the following files in your project:</p> 38<div class="language-shell codeBlockContainer_mQmQ theme-code-block" style=--prism-color:#FFFFFF;--prism-background-color:#282C34><div class=codeBlockTitle_kY6l>shell</div><div class=codeBlockContent_t_Hd><pre tabindex=0 class="prism-code language-shell codeBlock_RMoD thin-scrollbar" style=color:#FFFFFF;background-color:#282C34><code class=codeBlockLines_AclH><span class=token-line style=color:#FFFFFF><span class="token plain">Container.js </span><span class="token comment" style=color:#93a1a1># picked up by webpack, Rollup or any other Web bundler</span><span class="token plain"></span><br></span><span class=token-line style=color:#FFFFFF><span class="token plain">Container.native.js </span><span class="token comment" style=color:#93a1a1># picked up by the React Native bundler for both Android and iOS (Metro)</span><br></span></code></pre></div></div> 39<p>You can still import it without the <code>.native</code> extension, as follows:</p> 40<div class="language-tsx codeBlockContainer_mQmQ theme-code-block" style=--prism-color:#FFFFFF;--prism-background-color:#282C34><div class=codeBlockTitle_kY6l>tsx</div><div class=codeBlockContent_t_Hd><pre tabindex=0 class="prism-code language-tsx codeBlock_RMoD thin-scrollbar" style=color:#FFFFFF;background-color:#282C34><code class=codeBlockLines_AclH><span class=token-line style=color:#FFFFFF><span class="token keyword" style=color:#c5a5c5>import</span><span class="token plain"> </span><span class="token imports maybe-class-name">Container</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>'./Container'</span><span class="token punctuation" style=color:#657b83>;</span><br></span></code></pre></div></div> 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