Files
react-native/docs/0.39/linking.html
T
Website Deployment Script 7e79c48067 Deploy website
Deploy website version based on 0c7ba2070e
2018-01-11 19:16:12 +00:00

131 lines
36 KiB
HTML
Raw Blame History

This file contains ambiguous Unicode characters
This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.
<html><head><meta charset="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge, chrome=1"/><title>Linking · React Native</title><meta name="viewport" content="width=device-width"/><meta name="generator" content="Docusaurus"/><meta property="og:title" content="Linking · React Native"/><meta property="og:type" content="website"/><meta property="og:url" content="https://facebook.github.io/react-native/index.html"/><meta property="og:description" content="`Linking` gives you a general interface to interact with both incoming and outgoing app links."/><link rel="shortcut icon" href="/react-native/img/favicon.png"/><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://facebook.github.io/blog/atom.xml" title="React Native Blog ATOM Feed"/><link rel="alternate" type="application/rss+xml" href="https://facebook.github.io/blog/feed.xml" title="React Native Blog RSS Feed"/><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/main.css"/></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"/><h2 class="headerTitle">React Native</h2></a><a href="/react-native/versions.html"><h3>0.39</h3></a><div class="navigationWrapper navigationSlider"><nav class="slidingNav"><ul class="nav-site nav-site-internal"><li><a href="/react-native/docs/0.39/getting-started.html" target="_self">Docs</a></li><li><a href="/react-native/en/help.html" target="_self">Community</a></li><li><a href="/react-native/blog" target="_self">Blog</a></li><li class="navSearchWrapper reactNavSearchWrapper"><input type="text" id="search_input_react" placeholder="Search"/></li><li><a href="https://github.com/facebook/react-native" target="_self">GitHub</a></li><li><a href="https://reactjs.org/" target="_self">React</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>APIs</span></h2></div><div class="navGroups"><div class="navGroup navGroupActive"><h3>The Basics</h3><ul><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/getting-started.html">Getting Started</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/tutorial.html">Learn the Basics</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/props.html">Props</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/state.html">State</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/style.html">Style</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/height-and-width.html">Height and Width</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/flexbox.html">Layout with Flexbox</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/handling-text-input.html">Handling Text Input</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/handling-touches.html">Handling Touches</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/using-a-scrollview.html">Using a ScrollView</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/using-a-listview.html">Using List Views</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/network.html">Networking</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/more-resources.html">More Resources</a></li></ul></div><div class="navGroup navGroupActive"><h3>Guides</h3><ul><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/components-and-apis.html">Components and APIs</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/platform-specific-code.html">Platform Specific Code</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/navigation.html">Navigating Between Screens</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/images.html">Images</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/animations.html">Animations</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/accessibility.html">Accessibility</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/improvingux.html">Improving User Experience</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/timers.html">Timers</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/debugging.html">Debugging</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/performance.html">Performance</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/gesture-responder-system.html">Gesture Responder System</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/javascript-environment.html">JavaScript Environment</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/direct-manipulation.html">Direct Manipulation</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/colors.html">Color Reference</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/integration-with-existing-apps.html">Integration with Existing Apps</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/running-on-device.html">Running On Device</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/upgrading.html">Upgrading to new React Native versions</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/troubleshooting.html">Troubleshooting</a></li></ul></div><div class="navGroup navGroupActive"><h3>Guides (iOS)</h3><ul><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/native-modules-ios.html">Native Modules</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/native-components-ios.html">Native UI Components</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/linking-libraries-ios.html">Linking Libraries</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/running-on-simulator-ios.html">Running On Simulator</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/communication-ios.html">Communication between native and React Native</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/building-for-apple-tv.html">Building For TV Devices</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/app-extensions.html">App Extensions</a></li></ul></div><div class="navGroup navGroupActive"><h3>Guides (Android)</h3><ul><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/native-modules-android.html">Native Modules</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/native-components-android.html">Native UI Components</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/headless-js-android.html">Headless JS</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/signed-apk-android.html">Generating Signed APK</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/android-building-from-source.html">Building React Native from source</a></li></ul></div><div class="navGroup navGroupActive"><h3>Contributing</h3><ul><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/contributing.html">How to Contribute</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/maintainers.html">What to Expect from Maintainers</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/testing.html">Testing your Changes</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/understanding-cli.html">Understanding the CLI</a></li></ul></div><div class="navGroup navGroupActive"><h3>Components</h3><ul><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/activityindicator.html">ActivityIndicator</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/button.html">Button</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/datepickerios.html">DatePickerIOS</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/drawerlayoutandroid.html">DrawerLayoutAndroid</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/image.html">Image</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/keyboardavoidingview.html">KeyboardAvoidingView</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/modal.html">Modal</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/navigatorios.html">NavigatorIOS</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/picker.html">Picker</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/pickerios.html">PickerIOS</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/progressbarandroid.html">ProgressBarAndroid</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/progressviewios.html">ProgressViewIOS</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/refreshcontrol.html">RefreshControl</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/scrollview.html">ScrollView</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/segmentedcontrolios.html">SegmentedControlIOS</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/slider.html">Slider</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/snapshotviewios.html">SnapshotViewIOS</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/statusbar.html">StatusBar</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/switch.html">Switch</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/tabbarios.html">TabBarIOS</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/tabbarios-item.html">TabBarIOS.Item</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/text.html">Text</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/textinput.html">TextInput</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/toolbarandroid.html">ToolbarAndroid</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/touchablehighlight.html">TouchableHighlight</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/touchablenativefeedback.html">TouchableNativeFeedback</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/touchableopacity.html">TouchableOpacity</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/touchablewithoutfeedback.html">TouchableWithoutFeedback</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/viewpagerandroid.html">ViewPagerAndroid</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/webview.html">WebView</a></li></ul></div><div class="navGroup navGroupActive"><h3>APIs</h3><ul><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/actionsheetios.html">ActionSheetIOS</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/alert.html">Alert</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/alertios.html">AlertIOS</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/animated.html">Animated</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/appregistry.html">AppRegistry</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/appstate.html">AppState</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/asyncstorage.html">AsyncStorage</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/cameraroll.html">CameraRoll</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/clipboard.html">Clipboard</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/datepickerandroid.html">DatePickerAndroid</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/dimensions.html">Dimensions</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/easing.html">Easing</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/geolocation.html">Geolocation</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/imageeditor.html">ImageEditor</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/imagepickerios.html">ImagePickerIOS</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/imagestore.html">ImageStore</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/image-style-props.html">Image Style Props</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/interactionmanager.html">InteractionManager</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/keyboard.html">Keyboard</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/layout-props.html">Layout Props</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/layoutanimation.html">LayoutAnimation</a></li><li class="navListItem navListItemActive"><a class="navItem navItemActive" href="/react-native/docs/0.39/linking.html">Linking</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/netinfo.html">NetInfo</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/panresponder.html">PanResponder</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/permissionsandroid.html">PermissionsAndroid</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/pixelratio.html">PixelRatio</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/pushnotificationios.html">PushNotificationIOS</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/settings.html">Settings</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/shadow-props.html">Shadow Props</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/share.html">Share</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/statusbarios.html">StatusBarIOS</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/stylesheet.html">StyleSheet</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/systrace.html">Systrace</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/text-style-props.html">Text Style Props</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/timepickerandroid.html">TimePickerAndroid</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/toastandroid.html">ToastAndroid</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/transforms.html">Transforms</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/vibration.html">Vibration</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/vibrationios.html">VibrationIOS</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.39/view-style-props.html">View Style Props</a></li></ul></div></div></section></div><script>
var toggler = document.getElementById('navToggler');
var nav = document.getElementById('docsNav');
toggler.onclick = function() {
nav.classList.toggle('docsSliderActive');
};
</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/linking.md" target="_blank">Edit</a><h1>Linking</h1></header><article><div><span><p><code>Linking</code> gives you a general interface to interact with both incoming and outgoing app links.</p>
<h3><a class="anchor" aria-hidden="true" name="basic-usage"></a><a href="#basic-usage" aria-hidden="true" class="hash-link" ><svg 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>Basic Usage</h3>
<h4><a class="anchor" aria-hidden="true" name="handling-deep-links"></a><a href="#handling-deep-links" aria-hidden="true" class="hash-link" ><svg 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>Handling deep links</h4>
<p>If your app was launched from an external url registered to your app you can access and handle it from any component you want with</p>
<pre><code class="hljs">componentDidMount() {
var url = Linking.getInitialURL().<span class="hljs-keyword">then</span>(<span class="hljs-function"><span class="hljs-params">(url)</span> =&gt;</span> {
<span class="hljs-keyword">if</span> (url) {
<span class="hljs-built_in">console</span>.log(<span class="hljs-string">'Initial url is: '</span> + url);
}
}).<span class="hljs-keyword">catch</span>(err =&gt; <span class="hljs-built_in">console</span>.error(<span class="hljs-string">'An error occurred'</span>, err));
}
</code></pre>
<p>NOTE: For instructions on how to add support for deep linking on Android, refer to <a href="http://developer.android.com/training/app-indexing/deep-linking.html#adding-filters">Enabling Deep Links for App Content - Add Intent Filters for Your Deep Links</a>.</p>
<p>If you wish to receive the intent in an existing instance of MainActivity, you may set the <code>launchMode</code> of MainActivity to <code>singleTask</code> in <code>AndroidManifest.xml</code>. See <a href="http://developer.android.com/guide/topics/manifest/activity-element.html"><code>&lt;activity&gt;</code></a> documentation for more information.</p>
<pre><code class="hljs">&lt;activity
android:<span class="hljs-attribute">name</span>=<span class="hljs-string">".MainActivity"</span>
android:<span class="hljs-attribute">launchMode</span>=<span class="hljs-string">"singleTask"</span>&gt;
</code></pre>
<p>NOTE: On iOS you'll need to link <code>RCTLinking</code> to your project by following the steps described <a href="/react-native/docs/0.39/linking-libraries-ios.html#manual-linking">here</a>. In case you also want to listen to incoming app links during your app's execution you'll need to add the following lines to you <code>*AppDelegate.m</code>:</p>
<pre><code class="hljs"><span class="hljs-section">#import "RCTLinkingManager.h"</span>
<span class="hljs-bullet">- </span>(BOOL)application:(UIApplication <span class="hljs-emphasis">*)application openURL:(NSURL *</span>)url
sourceApplication:(NSString *)sourceApplication annotation:(id)annotation
{
return [RCTLinkingManager application:application openURL:url
<span class="hljs-code"> sourceApplication:sourceApplication annotation:annotation];</span>
}
// Only if your app is using [<span class="hljs-string">Universal Links</span>](<span class="hljs-link">https://developer.apple.com/library/prerelease/ios/documentation/General/Conceptual/AppSearch/UniversalLinks.html</span>).
<span class="hljs-bullet">- </span>(BOOL)application:(UIApplication <span class="hljs-emphasis">*)application continueUserActivity:(NSUserActivity *</span>)userActivity
restorationHandler:(void (^)(NSArray * _Nullable))restorationHandler
{
return [RCTLinkingManager application:application
<span class="hljs-code"> continueUserActivity:userActivity</span>
<span class="hljs-code"> restorationHandler:restorationHandler];</span>
}
</code></pre>
<p>And then on your React component you'll be able to listen to the events on <code>Linking</code> as follows</p>
<pre><code class="hljs"><span class="hljs-selector-tag">componentDidMount</span>() {
<span class="hljs-selector-tag">Linking</span><span class="hljs-selector-class">.addEventListener</span>(<span class="hljs-string">'url'</span>, this._handleOpenURL);
},
<span class="hljs-selector-tag">componentWillUnmount</span>() {
<span class="hljs-selector-tag">Linking</span><span class="hljs-selector-class">.removeEventListener</span>(<span class="hljs-string">'url'</span>, this._handleOpenURL);
},
<span class="hljs-selector-tag">_handleOpenURL</span>(event) {
<span class="hljs-selector-tag">console</span><span class="hljs-selector-class">.log</span>(event.url);
}
</code></pre>
<h4><a class="anchor" aria-hidden="true" name="opening-external-links"></a><a href="#opening-external-links" aria-hidden="true" class="hash-link" ><svg 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>Opening external links</h4>
<p>To start the corresponding activity for a link (web URL, email, contact etc.), call</p>
<pre><code class="hljs">Linking.openURL(url).catch(<span class="hljs-keyword">err</span> =&gt; console.<span class="hljs-keyword">error</span>('<span class="hljs-keyword">An</span> <span class="hljs-keyword">error</span> occurred', <span class="hljs-keyword">err</span>));
</code></pre>
<p>If you want to check if any installed app can handle a given URL beforehand you can call</p>
<pre><code class="hljs">Linking.canOpenURL(url).then(<span class="hljs-function"><span class="hljs-params">supported</span> =&gt;</span> {
<span class="hljs-keyword">if</span> (!supported) {
<span class="hljs-built_in">console</span>.log(<span class="hljs-string">'Can\'t handle url: '</span> + url);
} <span class="hljs-keyword">else</span> {
<span class="hljs-keyword">return</span> Linking.openURL(url);
}
}).catch(<span class="hljs-function"><span class="hljs-params">err</span> =&gt;</span> <span class="hljs-built_in">console</span>.error(<span class="hljs-string">'An error occurred'</span>, err));
</code></pre>
<h3><a class="anchor" aria-hidden="true" name="methods"></a><a href="#methods" aria-hidden="true" class="hash-link" ><svg 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="/react-native/docs/0.39/linking.html#constructor"><code>constructor</code></a></li>
<li><a href="/react-native/docs/0.39/linking.html#addeventlistener"><code>addEventListener</code></a></li>
<li><a href="/react-native/docs/0.39/linking.html#removeeventlistener"><code>removeEventListener</code></a></li>
<li><a href="/react-native/docs/0.39/linking.html#openurl"><code>openURL</code></a></li>
<li><a href="/react-native/docs/0.39/linking.html#canopenurl"><code>canOpenURL</code></a></li>
<li><a href="/react-native/docs/0.39/linking.html#getinitialurl"><code>getInitialURL</code></a></li>
</ul>
<hr>
<h1><a class="anchor" aria-hidden="true" name="reference"></a><a href="#reference" aria-hidden="true" class="hash-link" ><svg 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" name="methods"></a><a href="#methods" aria-hidden="true" class="hash-link" ><svg 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" name="constructor"></a><a href="#constructor" aria-hidden="true" class="hash-link" ><svg 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>constructor()</code></h3>
<pre><code class="hljs css javascript"><span class="hljs-keyword">constructor</span>();
</code></pre>
<hr>
<h3><a class="anchor" aria-hidden="true" name="addeventlistener"></a><a href="#addeventlistener" aria-hidden="true" class="hash-link" ><svg 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 javascript">addEventListener(type, handler);
</code></pre>
<p>Add a handler to Linking changes by listening to the <code>url</code> event type and providing the handler</p>
<hr>
<h3><a class="anchor" aria-hidden="true" name="removeeventlistener"></a><a href="#removeeventlistener" aria-hidden="true" class="hash-link" ><svg 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 javascript">removeEventListener(type, handler);
</code></pre>
<p>Remove a handler by passing the <code>url</code> event type and the handler</p>
<hr>
<h3><a class="anchor" aria-hidden="true" name="openurl"></a><a href="#openurl" aria-hidden="true" class="hash-link" ><svg 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>openURL()</code></h3>
<pre><code class="hljs css javascript">openURL(url);
</code></pre>
<p>Try to open the given <code>url</code> with any of the installed apps.</p>
<p>You can use other URLs, like a location (e.g. &quot;geo:37.484847,-122.148386&quot;), a contact, or any other URL that can be opened with the installed apps.</p>
<p>NOTE: This method will fail if the system doesn't know how to open the specified URL. If you're passing in a non-http(s) URL, it's best to check {@code canOpenURL} first.</p>
<p>NOTE: For web URLs, the protocol (&quot;http://&quot;, &quot;https://&quot;) must be set accordingly!</p>
<hr>
<h3><a class="anchor" aria-hidden="true" name="canopenurl"></a><a href="#canopenurl" aria-hidden="true" class="hash-link" ><svg 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>canOpenURL()</code></h3>
<pre><code class="hljs css javascript">canOpenURL(url);
</code></pre>
<p>Determine whether or not an installed app can handle a given URL.</p>
<p>NOTE: For web URLs, the protocol (&quot;http://&quot;, &quot;https://&quot;) must be set accordingly!</p>
<p>NOTE: As of iOS 9, your app needs to provide the <code>LSApplicationQueriesSchemes</code> key inside <code>Info.plist</code> or canOpenURL will always return false.</p>
<p>@param URL the URL to open</p>
<hr>
<h3><a class="anchor" aria-hidden="true" name="getinitialurl"></a><a href="#getinitialurl" aria-hidden="true" class="hash-link" ><svg 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>getInitialURL()</code></h3>
<pre><code class="hljs css javascript">getInitialURL();
</code></pre>
<p>If the app launch was triggered by an app link, it will give the link url, otherwise it will give <code>null</code></p>
<p>NOTE: To support deep linking on Android, refer <a href="http://developer.android.com/training/app-indexing/deep-linking.html#handling-intents">http://developer.android.com/training/app-indexing/deep-linking.html#handling-intents</a></p>
</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="layoutanimation.html">← LayoutAnimation</a><a class="docs-next button" href="netinfo.html">NetInfo →</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">Learn the Basics</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&#x27;s using React Native?</a><a href="http://www.meetup.com/topics/react-native/" target="_blank">Meetups</a><a href="https://www.facebook.com/groups/react.native.community" target="_blank">Facebook Group</a><a href="https://twitter.com/reactnative" target="_blank">Twitter</a></div><div><h5><a href="/react-native/help.html">Help</a></h5><a href="http://stackoverflow.com/questions/tagged/react-native" target="_blank">Stack Overflow</a><a href="https://discord.gg/0ZcbPKXt5bZjGY5n">Reactiflux Chat</a><a href="/react-native/versions.html" target="_blank">Latest Releases</a><a href="https://react-native.canny.io/feature-requests" target="_blank">Feature Requests</a></div><div><h5>More</h5><a href="/react-native/blog">Blog</a><a href="http://reactjs.org" target="_blank">React</a><a href="https://github.com/facebook/react-native" target="_blank">GitHub</a><div class="githubButton"><a class="github-button" href="https://github.com/facebook/react-native" data-icon="octicon-star" data-show-count="true" data-count-href="/facebook/react-native/stargazers" data-count-api="/repos/facebook/react-native#stargazers_count" data-count-aria-label="# stargazers on GitHub" aria-label="Star facebook/react-native on GitHub">Star</a></div></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>
(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
})(window,document,'script','https://www.google-analytics.com/analytics.js','ga');
ga('create', 'UA-41298772-2', 'auto');
ga('send', 'pageview');
</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'));
</script><script>window.twttr=(function(d,s, id){var js,fjs=d.getElementsByTagName(s)[0],t=window.twttr||{};if(d.getElementById(id))return t;js=d.createElement(s);js.id=id;js.src='https://platform.twitter.com/widgets.js';fjs.parentNode.insertBefore(js, fjs);t._e = [];t.ready = function(f) {t._e.push(f);};return t;}(document, 'script', 'twitter-wjs'));</script><script>
var search = docsearch({
apiKey: '2c98749b4a1e588efec53b2acec13025',
indexName: 'react-native-versions',
inputSelector: '#search_input_react',
algoliaOptions: {"facetFilters":["tags:0.39"],"hitsPerPage":5}
});
</script></body></html>