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<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Building React Native from source · React Native</title><meta name="viewport" content="width=device-width"/><meta name="generator" content="Docusaurus"/><meta name="description" content="<p>You will need to build React Native from source if you want to work on a new feature/bug fix, try out the latest features which are not released yet, or maintain your own fork with patches that cannot be merged to the core.</p>
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"/><meta name="docsearch:version" content="0.59"/><meta name="docsearch:language" content="en"/><meta property="og:title" content="Building React Native from source · React Native"/><meta property="og:type" content="website"/><meta property="og:url" content="https://facebook.github.io/react-native/"/><meta property="og:description" content="<p>You will need to build React Native from source if you want to work on a new feature/bug fix, try out the latest features which are not released yet, or maintain your own fork with patches that cannot be merged to the core.</p>
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</script><script type="text/javascript" src="https://snack.expo.io/embed.js"></script><script type="text/javascript" src="/react-native/js/codeblocks.js"></script><link rel="stylesheet" href="/react-native/css/prism.css"/><link rel="stylesheet" href="/react-native/css/main.css"/><script src="/react-native/js/codetabs.js"></script></head><body class="sideNavVisible"><div class="fixedHeaderContainer"><div class="headerWrapper wrapper"><header><a href="/react-native/"><img class="logo" src="/react-native/img/header_logo.png" alt="React Native"/><h2 class="headerTitleWithLogo">React Native</h2></a><a href="/react-native/versions"><h3>0.59</h3></a><div class="navigationWrapper navigationSlider"><nav class="slidingNav"><ul class="nav-site nav-site-internal"><li class="siteNavGroupActive"><a href="/react-native/docs/getting-started" target="_self">Docs</a></li><li class=""><a href="/react-native/help" target="_self">Community</a></li><li class=""><a href="/react-native/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 docsNavContainer" id="docsNav"><nav class="toc"><div class="toggleNav"><section class="navWrapper wrapper"><div class="navBreadcrumb wrapper"><div class="navToggle" id="navToggler"><i></i></div><h2><i>›</i><span>Contributing</span></h2></div><div class="navGroups"><div class="navGroup"><h3 class="navGroupCategoryTitle">The Basics</h3><ul class=""><li class="navListItem"><a class="navItem" href="/react-native/docs/getting-started">Getting Started</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/tutorial">Learn the Basics</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/props">Props</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/state">State</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/style">Style</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/height-and-width">Height and Width</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/flexbox">Layout with Flexbox</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/handling-text-input">Handling Text Input</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/handling-touches">Handling Touches</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/using-a-scrollview">Using a ScrollView</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/using-a-listview">Using List Views</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/network">Networking</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/more-resources">More Resources</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Guides</h3><ul class=""><li class="navListItem"><a class="navItem" href="/react-native/docs/components-and-apis">Components and APIs</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/platform-specific-code">Platform Specific Code</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/navigation">Navigating Between Screens</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/images">Images</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/animations">Animations</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/accessibility">Accessibility</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/improvingux">Improving User Experience</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/timers">Timers</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/debugging">Debugging</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/performance">Performance</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/gesture-responder-system">Gesture Responder System</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/javascript-environment">JavaScript Environment</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/direct-manipulation">Direct Manipulation</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/colors">Color Reference</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/integration-with-existing-apps">Integration with Existing Apps</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/building-for-apple-tv">Building For TV Devices</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/running-on-device">Running On Device</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/upgrading">Upgrading to new React Native versions</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/troubleshooting">Troubleshooting</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/native-modules-setup">Native Modules Setup</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/out-of-tree-platforms">Out-of-Tree Platforms</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Guides (iOS)</h3><ul class=""><li class="navListItem"><a class="navItem" href="/react-native/docs/native-modules-ios">Native Modules</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/native-components-ios">Native UI Components</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/linking-libraries-ios">Linking Libraries</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/running-on-simulator-ios">Running On Simulator</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/communication-ios">Communication between native and React Native</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/app-extensions">App Extensions</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Guides (Android)</h3><ul class=""><li class="navListItem"><a class="navItem" href="/react-native/docs/native-modules-android">Native Modules</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/native-components-android">Native UI Components</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/headless-js-android">Headless JS</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/signed-apk-android">Generating Signed APK</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/removing-default-permissions">Removing Default Permissions</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Contributing</h3><ul class=""><li class="navListItem"><a class="navItem" href="/react-native/docs/contributing">How to Contribute</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/maintainers">What to Expect from Maintainers</a></li><li class="navListItem navListItemActive"><a class="navItem" href="/react-native/docs/building-from-source">Building React Native from source</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/publishing-forks">Publish your own version of react native</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/testing">Testing your Changes</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">Components</h3><ul class=""><li class="navListItem"><a 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class="navListItem"><a class="navItem" href="/react-native/docs/touchablenativefeedback">TouchableNativeFeedback</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/touchableopacity">TouchableOpacity</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/touchablewithoutfeedback">TouchableWithoutFeedback</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/view">View</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/viewpagerandroid">ViewPagerAndroid</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/virtualizedlist">VirtualizedList</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/webview">WebView</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle">APIs</h3><ul class=""><li class="navListItem"><a class="navItem" href="/react-native/docs/accessibilityinfo">AccessibilityInfo</a></li><li class="navListItem"><a 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</script></nav></div><div class="container mainContainer"><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/building-from-source.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 class="postHeaderTitle">Building React Native from source</h1></header><article><div><span><p>You will need to build React Native from source if you want to work on a new feature/bug fix, try out the latest features which are not released yet, or maintain your own fork with patches that cannot be merged to the core.</p>
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<h2><a class="anchor" aria-hidden="true" id="android"></a><a href="#android" 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>Android</h2>
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<h3><a class="anchor" aria-hidden="true" id="prerequisites"></a><a href="#prerequisites" 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>Prerequisites</h3>
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<p>Assuming you have the Android SDK installed, run <code>android</code> to open the Android SDK Manager.</p>
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<p>Make sure you have the following installed:</p>
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<ol>
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<li>Android SDK version 28 (compileSdkVersion in <a href="https://github.com/facebook/react-native/blob/master/ReactAndroid/build.gradle"><code>build.gradle</code></a>)</li>
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<li>SDK build tools version 28.0.3 (buildToolsVersion in <a href="https://github.com/facebook/react-native/blob/master/ReactAndroid/build.gradle"><code>build.gradle</code></a>)</li>
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<li>Android Support Repository >= 28 (for Android Support Library)</li>
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<li>Android NDK (download links and installation instructions below)</li>
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</ol>
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<h4><a class="anchor" aria-hidden="true" id="point-gradle-to-your-android-sdk-gradle-android-sdk"></a><a href="#point-gradle-to-your-android-sdk-gradle-android-sdk" 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><a href="#gradle-android-sdk">Point Gradle to your Android SDK</a>:</h4>
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<p><strong>Step 1:</strong> Set environment variables through your local shell.</p>
|
||
<p>Note: Files may vary based on shell flavor. See below for examples from common shells.</p>
|
||
<ul>
|
||
<li>bash: <code>.bash_profile</code> or <code>.bashrc</code></li>
|
||
<li>zsh: <code>.zprofile</code> or <code>.zshrc</code></li>
|
||
<li>ksh: <code>.profile</code> or <code>$ENV</code></li>
|
||
</ul>
|
||
<p>Example:</p>
|
||
<pre><code class="hljs"><span class="hljs-builtin-name">export</span> <span class="hljs-attribute">ANDROID_SDK</span>=/Users/your_unix_name/android-sdk-macosx
|
||
<span class="hljs-builtin-name">export</span> <span class="hljs-attribute">ANDROID_NDK</span>=/Users/your_unix_name/android-ndk/android-ndk-r17c
|
||
</code></pre>
|
||
<p><strong>Step 2:</strong> Create a <code>local.properties</code> file in the <code>android</code> directory of your react-native app with the following contents:</p>
|
||
<p>Example:</p>
|
||
<pre><code class="hljs">sdk.<span class="hljs-attribute">dir</span>=/Users/your_unix_name/android-sdk-macosx
|
||
ndk.<span class="hljs-attribute">dir</span>=/Users/your_unix_name/android-ndk/android-ndk-r17c
|
||
</code></pre>
|
||
<h4><a class="anchor" aria-hidden="true" id="download-links-for-android-ndk"></a><a href="#download-links-for-android-ndk" 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>Download links for Android NDK</h4>
|
||
<ol>
|
||
<li>Mac OS (64-bit) - <a href="http://dl.google.com/android/repository/android-ndk-r17c-darwin-x86_64.zip">http://dl.google.com/android/repository/android-ndk-r17c-darwin-x86_64.zip</a></li>
|
||
<li>Linux (64-bit) - <a href="http://dl.google.com/android/repository/android-ndk-r17c-linux-x86_64.zip">http://dl.google.com/android/repository/android-ndk-r17c-linux-x86_64.zip</a></li>
|
||
<li>Windows (64-bit) - <a href="http://dl.google.com/android/repository/android-ndk-r17c-windows-x86_64.zip">http://dl.google.com/android/repository/android-ndk-r17c-windows-x86_64.zip</a></li>
|
||
<li>Windows (32-bit) - <a href="http://dl.google.com/android/repository/android-ndk-r17c-windows-x86.zip">http://dl.google.com/android/repository/android-ndk-r17c-windows-x86.zip</a></li>
|
||
</ol>
|
||
<p>You can find further instructions on the <a href="https://developer.android.com/ndk/index.html">official page</a>.</p>
|
||
<h3><a class="anchor" aria-hidden="true" id="building-the-source"></a><a href="#building-the-source" 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>Building the source</h3>
|
||
<h4><a class="anchor" aria-hidden="true" id="1-installing-the-fork"></a><a href="#1-installing-the-fork" 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>1. Installing the fork</h4>
|
||
<p>First, you need to install <code>react-native</code> from your fork. For example, to install the master branch from the official repo, run the following:</p>
|
||
<pre><code class="hljs css language-sh">npm install --save github:facebook/react-native<span class="hljs-comment">#master</span>
|
||
</code></pre>
|
||
<p>Alternatively, you can clone the repo to your <code>node_modules</code> directory and run <code>npm install</code> inside the cloned repo.</p>
|
||
<h4><a class="anchor" aria-hidden="true" id="2-adding-gradle-dependencies"></a><a href="#2-adding-gradle-dependencies" 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>2. Adding gradle dependencies</h4>
|
||
<p>Add <code>gradle-download-task</code> as dependency in <code>android/build.gradle</code>:</p>
|
||
<pre><code class="hljs css language-gradle">...
|
||
<span class="hljs-keyword">dependencies</span> {
|
||
<span class="hljs-keyword">classpath</span> <span class="hljs-string">'com.android.tools.build:gradle:3.2.1'</span>
|
||
<span class="hljs-keyword">classpath</span> <span class="hljs-string">'de.undercouch:gradle-download-task:3.4.3'</span>
|
||
|
||
<span class="hljs-comment">// <span class="hljs-doctag">NOTE:</span> Do not place your application dependencies here; they belong</span>
|
||
<span class="hljs-comment">// in the individual module build.gradle files</span>
|
||
}
|
||
...
|
||
</code></pre>
|
||
<h4><a class="anchor" aria-hidden="true" id="3-adding-the-reactandroid-project"></a><a href="#3-adding-the-reactandroid-project" 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>3. Adding the <code>:ReactAndroid</code> project</h4>
|
||
<p>Add the <code>:ReactAndroid</code> project in <code>android/settings.gradle</code>:</p>
|
||
<pre><code class="hljs css language-gradle">...
|
||
<span class="hljs-keyword">include</span> <span class="hljs-string">':ReactAndroid'</span>
|
||
|
||
<span class="hljs-keyword">project</span>(<span class="hljs-string">':ReactAndroid'</span>).projectDir = <span class="hljs-keyword">new</span> <span class="hljs-keyword">File</span>(
|
||
rootProject.projectDir, <span class="hljs-string">'../node_modules/react-native/ReactAndroid'</span>)
|
||
...
|
||
</code></pre>
|
||
<p>Modify your <code>android/app/build.gradle</code> to use the <code>:ReactAndroid</code> project instead of the pre-compiled library, e.g. - replace <code>implementation 'com.facebook.react:react-native:+'</code> with <code>implementation project(':ReactAndroid')</code>:</p>
|
||
<pre><code class="hljs css language-gradle">...
|
||
<span class="hljs-keyword">dependencies</span> {
|
||
implementation <span class="hljs-keyword">fileTree</span>(dir: <span class="hljs-string">'libs'</span>, <span class="hljs-keyword">include</span>: [<span class="hljs-string">'*.jar'</span>])
|
||
implementation <span class="hljs-string">'com.android.support:appcompat-v7:${rootProject.ext.supportLibVersion}'</span>
|
||
|
||
implementation <span class="hljs-keyword">project</span>(<span class="hljs-string">':ReactAndroid'</span>)
|
||
|
||
...
|
||
}
|
||
...
|
||
</code></pre>
|
||
<h4><a class="anchor" aria-hidden="true" id="4-making-3rd-party-modules-use-your-fork"></a><a href="#4-making-3rd-party-modules-use-your-fork" 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>4. Making 3rd-party modules use your fork</h4>
|
||
<p>If you use 3rd-party React Native modules, you need to override their dependencies so that they don't bundle the pre-compiled library. Otherwise you'll get an error while compiling - <code>Error: more than one library with package name 'com.facebook.react'</code>.</p>
|
||
<p>Modify your <code>android/app/build.gradle</code>, and add:</p>
|
||
<pre><code class="hljs css language-gradle"><span class="hljs-keyword">configurations</span>.all {
|
||
<span class="hljs-keyword">exclude</span> <span class="hljs-keyword">group</span>: <span class="hljs-string">'com.facebook.react'</span>, module: <span class="hljs-string">'react-native'</span>
|
||
}
|
||
</code></pre>
|
||
<h3><a class="anchor" aria-hidden="true" id="building-from-android-studio"></a><a href="#building-from-android-studio" 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>Building from Android Studio</h3>
|
||
<p>From the Welcome screen of Android Studio choose "Import project" and select the <code>android</code> folder of your app.</p>
|
||
<p>You should be able to use the <em>Run</em> button to run your app on a device. Android Studio won't start the packager automatically, you'll need to start it by running <code>npm start</code> on the command line.</p>
|
||
<h3><a class="anchor" aria-hidden="true" id="additional-notes"></a><a href="#additional-notes" 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>Additional notes</h3>
|
||
<p>Building from source can take a long time, especially for the first build, as it needs to download ~200 MB of artifacts and compile the native code. Every time you update the <code>react-native</code> version from your repo, the build directory may get deleted, and all the files are re-downloaded. To avoid this, you might want to change your build directory path by editing the <code>~/.gradle/init.gradle</code> file:</p>
|
||
<pre><code class="hljs css language-gradle">gradle.projectsLoaded {
|
||
rootProject.<span class="hljs-keyword">allprojects</span> {
|
||
buildDir = <span class="hljs-string">"/path/to/build/directory/${rootProject.name}/${project.name}"</span>
|
||
}
|
||
}
|
||
</code></pre>
|
||
<h3><a class="anchor" aria-hidden="true" id="troubleshooting"></a><a href="#troubleshooting" 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>Troubleshooting</h3>
|
||
<p>Gradle build fails in <code>ndk-build</code>. See the section about <code>local.properties</code> file above.</p>
|
||
<h2><a class="anchor" aria-hidden="true" id="testing-your-changes"></a><a href="#testing-your-changes" 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>Testing your Changes</h2>
|
||
<p>If you made changes to React Native and submit a pull request, all tests will run on your pull request automatically. To run the tests locally, see <a href="/react-native/docs/testing">Testing your Changes</a>.</p>
|
||
<h2><a class="anchor" aria-hidden="true" id="making-your-changes-available"></a><a href="#making-your-changes-available" 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>Making your changes available</h2>
|
||
<p>See the <a href="/react-native/docs/publishing-forks">Publishing your own version of react native</a> for several options to make your changes available for your and other app projects.</p>
|
||
</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/react-native/docs/maintainers"><span class="arrow-prev">← </span><span>What to Expect from Maintainers</span></a><a class="docs-next button" href="/react-native/docs/publishing-forks"><span>Publish your own version of react native</span><span class="arrow-next"> →</span></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>Community</h5><a href="/react-native/help.html">Community Resources</a><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://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 © 2019 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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