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<html lang="en"><head><meta charset="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>AlertIOS · React Native</title><meta name="viewport" content="width=device-width"/><meta name="generator" content="Docusaurus"/><meta property="og:title" content="AlertIOS · 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="`AlertIOS` provides functionality to create an iOS alert dialog with a message or create a prompt for user input."/><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>next</h3></a><div class="navigationWrapper navigationSlider"><nav class="slidingNav"><ul class="nav-site nav-site-internal"><li><a href="/react-native/docs/next/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/next/getting-started.html">Getting Started</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/tutorial.html">Learn the Basics</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/props.html">Props</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/state.html">State</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/style.html">Style</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/height-and-width.html">Height and Width</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/flexbox.html">Layout with Flexbox</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/handling-text-input.html">Handling Text Input</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/handling-touches.html">Handling Touches</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/using-a-scrollview.html">Using a ScrollView</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/using-a-listview.html">Using List Views</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/network.html">Networking</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/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/next/components-and-apis.html">Components and APIs</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/platform-specific-code.html">Platform Specific Code</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/navigation.html">Navigating Between Screens</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/images.html">Images</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/animations.html">Animations</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/accessibility.html">Accessibility</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/improvingux.html">Improving User Experience</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/timers.html">Timers</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/debugging.html">Debugging</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/performance.html">Performance</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/gesture-responder-system.html">Gesture Responder System</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/javascript-environment.html">JavaScript Environment</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/direct-manipulation.html">Direct Manipulation</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/colors.html">Color Reference</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/integration-with-existing-apps.html">Integration with Existing Apps</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/building-for-apple-tv.html">Building For TV Devices</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/running-on-device.html">Running On Device</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/upgrading.html">Upgrading to new React Native versions</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/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/next/native-modules-ios.html">Native Modules</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/native-components-ios.html">Native UI Components</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/linking-libraries-ios.html">Linking Libraries</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/running-on-simulator-ios.html">Running On Simulator</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/communication-ios.html">Communication between native and React Native</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/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/next/native-modules-android.html">Native Modules</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/native-components-android.html">Native UI Components</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/headless-js-android.html">Headless JS</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/signed-apk-android.html">Generating Signed APK</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/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/next/contributing.html">How to Contribute</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/maintainers.html">What to Expect from Maintainers</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/testing.html">Testing your Changes</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/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/next/activityindicator.html">ActivityIndicator</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/button.html">Button</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/datepickerios.html">DatePickerIOS</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/drawerlayoutandroid.html">DrawerLayoutAndroid</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/flatlist.html">FlatList</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/image.html">Image</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/inputaccessoryview.html">InputAccessoryView</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/keyboardavoidingview.html">KeyboardAvoidingView</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/listview.html">ListView</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/maskedviewios.html">MaskedViewIOS</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/modal.html">Modal</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/navigatorios.html">NavigatorIOS</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/picker.html">Picker</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/pickerios.html">PickerIOS</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/progressbarandroid.html">ProgressBarAndroid</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/progressviewios.html">ProgressViewIOS</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/refreshcontrol.html">RefreshControl</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/safeareaview.html">SafeAreaView</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/scrollview.html">ScrollView</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/sectionlist.html">SectionList</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/segmentedcontrolios.html">SegmentedControlIOS</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/slider.html">Slider</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/snapshotviewios.html">SnapshotViewIOS</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/statusbar.html">StatusBar</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/switch.html">Switch</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/tabbarios.html">TabBarIOS</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/tabbarios-item.html">TabBarIOS.Item</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/text.html">Text</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/textinput.html">TextInput</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/toolbarandroid.html">ToolbarAndroid</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/touchablehighlight.html">TouchableHighlight</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/touchablenativefeedback.html">TouchableNativeFeedback</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/touchableopacity.html">TouchableOpacity</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/touchablewithoutfeedback.html">TouchableWithoutFeedback</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/view.html">View</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/viewpagerandroid.html">ViewPagerAndroid</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/virtualizedlist.html">VirtualizedList</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/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/next/accessibilityinfo.html">AccessibilityInfo</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/actionsheetios.html">ActionSheetIOS</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/alert.html">Alert</a></li><li class="navListItem navListItemActive"><a class="navItem navItemActive" href="/react-native/docs/next/alertios.html">AlertIOS</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/animated.html">Animated</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/appregistry.html">AppRegistry</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/appstate.html">AppState</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/asyncstorage.html">AsyncStorage</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/backandroid.html">BackAndroid</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/backhandler.html">BackHandler</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/cameraroll.html">CameraRoll</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/clipboard.html">Clipboard</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/datepickerandroid.html">DatePickerAndroid</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/dimensions.html">Dimensions</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/easing.html">Easing</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/geolocation.html">Geolocation</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/imageeditor.html">ImageEditor</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/imagepickerios.html">ImagePickerIOS</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/imagestore.html">ImageStore</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/image-style-props.html">Image Style Props</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/interactionmanager.html">InteractionManager</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/keyboard.html">Keyboard</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/layout-props.html">Layout Props</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/layoutanimation.html">LayoutAnimation</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/linking.html">Linking</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/listviewdatasource.html">ListViewDataSource</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/netinfo.html">NetInfo</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/panresponder.html">PanResponder</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/permissionsandroid.html">PermissionsAndroid</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/pixelratio.html">PixelRatio</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/pushnotificationios.html">PushNotificationIOS</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/settings.html">Settings</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/shadow-props.html">Shadow Props</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/share.html">Share</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/statusbarios.html">StatusBarIOS</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/stylesheet.html">StyleSheet</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/systrace.html">Systrace</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/text-style-props.html">Text Style Props</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/timepickerandroid.html">TimePickerAndroid</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/toastandroid.html">ToastAndroid</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/transforms.html">Transforms</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/vibration.html">Vibration</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/vibrationios.html">VibrationIOS</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/next/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/alertios.md" target="_blank">Edit</a><h1>AlertIOS</h1></header><article><div><span><p><code>AlertIOS</code> provides functionality to create an iOS alert dialog with a message or create a prompt for user input.</p>
<p>Creating an iOS alert:</p>
<pre><code class="hljs">AlertIOS.alert(
<span class="hljs-comment">'Sync Complete',</span>
<span class="hljs-comment">'All your data are belong to us.'</span>
);
</code></pre>
<p>Creating an iOS prompt:</p>
<pre><code class="hljs">AlertIOS.prompt(
<span class="hljs-string">'Enter a value'</span>,
<span class="hljs-keyword">null</span>,
<span class="hljs-built_in">text</span> =&gt; console.<span class="hljs-built_in">log</span>(<span class="hljs-string">"You entered "</span>+<span class="hljs-built_in">text</span>)
);
</code></pre>
<p>We recommend using the <a href="/react-native/docs/next/alert.html"><code>Alert.alert</code></a> method for cross-platform support if you don't need to create iOS-only prompts.</p>
<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/next/alertios.html#alert"><code>alert</code></a></li>
<li><a href="/react-native/docs/next/alertios.html#prompt"><code>prompt</code></a></li>
</ul>
<h3><a class="anchor" aria-hidden="true" name="type-definitions"></a><a href="#type-definitions" 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>Type Definitions</h3>
<ul>
<li><a href="/react-native/docs/next/alertios.html#alerttype"><code>AlertType</code></a></li>
<li><a href="/react-native/docs/next/alertios.html#alertbuttonstyle"><code>AlertButtonStyle</code></a></li>
<li><a href="/react-native/docs/next/alertios.html#buttonsarray"><code>ButtonsArray</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="alert"></a><a href="#alert" 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>alert()</code></h3>
<pre><code class="hljs css javascript"><span class="hljs-keyword">static</span> alert(title: string, [message]: string, [callbackOrButtons]: ?<span class="hljs-function">(<span class="hljs-params">(</span>) =&gt;</span> <span class="hljs-keyword">void</span>), ButtonsArray, [type]: AlertType): [object <span class="hljs-built_in">Object</span>]
</code></pre>
<p>Create and display a popup alert.</p>
<p><strong>Parameters:</strong></p>
<table>
<thead>
<tr><th>Name</th><th>Type</th><th>Required</th><th>Description</th></tr>
</thead>
<tbody>
<tr><td>title</td><td>string</td><td>Yes</td><td>The dialog's title. Passing null or '' will hide the title.</td></tr>
<tr><td>message</td><td>string</td><td>No</td><td>An optional message that appears below the dialog's title.</td></tr>
<tr><td>callbackOrButtons</td><td>?(() =&gt; void),<a href="/react-native/docs/next/alertios.html#buttonsarray">ButtonsArray</a></td><td>No</td><td>This optional argument should be either a single-argument function or an array of buttons. If passed a function, it will be called when the user taps 'OK'. If passed an array of button configurations, each button should include a <code>text</code> key, as well as optional <code>onPress</code> and <code>style</code> keys. <code>style</code> should be one of 'default', 'cancel' or 'destructive'.</td></tr>
<tr><td>type</td><td><a href="/react-native/docs/next/alertios.html#alerttype">AlertType</a></td><td>No</td><td>Deprecated, do not use.</td></tr>
</tbody>
</table>
<p>Example with custom buttons:</p>
<pre><code class="hljs css javascript">AlertIOS.alert(
<span class="hljs-string">'Update available'</span>,
<span class="hljs-string">'Keep your app up to date to enjoy the latest features'</span>,
[
{
<span class="hljs-attr">text</span>: <span class="hljs-string">'Cancel'</span>,
<span class="hljs-attr">onPress</span>: <span class="hljs-function"><span class="hljs-params">()</span> =&gt;</span> <span class="hljs-built_in">console</span>.log(<span class="hljs-string">'Cancel Pressed'</span>),
<span class="hljs-attr">style</span>: <span class="hljs-string">'cancel'</span>,
},
{
<span class="hljs-attr">text</span>: <span class="hljs-string">'Install'</span>,
<span class="hljs-attr">onPress</span>: <span class="hljs-function"><span class="hljs-params">()</span> =&gt;</span> <span class="hljs-built_in">console</span>.log(<span class="hljs-string">'Install Pressed'</span>),
},
]
);
</code></pre>
<hr>
<h3><a class="anchor" aria-hidden="true" name="prompt"></a><a href="#prompt" 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>prompt()</code></h3>
<pre><code class="hljs css javascript"><span class="hljs-keyword">static</span> prompt(title: string, [message]: string, [callbackOrButtons]: ?<span class="hljs-function">(<span class="hljs-params">(text: string</span>) =&gt;</span> <span class="hljs-keyword">void</span>), ButtonsArray, [type]: AlertType, [defaultValue]: string, [keyboardType]: string): [object <span class="hljs-built_in">Object</span>]
</code></pre>
<p>Create and display a prompt to enter some text.</p>
<p><strong>Parameters:</strong></p>
<table>
<thead>
<tr><th>Name</th><th>Type</th><th>Required</th><th>Description</th></tr>
</thead>
<tbody>
<tr><td>title</td><td>string</td><td>Yes</td><td>The dialog's title.</td></tr>
<tr><td>message</td><td>string</td><td>No</td><td>An optional message that appears above the text input.</td></tr>
<tr><td>callbackOrButtons</td><td>?((text: string) =&gt; void),<a href="/react-native/docs/next/alertios.html#buttonsarray">ButtonsArray</a></td><td>No</td><td>This optional argument should be either a single-argument function or an array of buttons. If passed a function, it will be called with the prompt's value when the user taps 'OK'. If passed an array of button configurations, each button should include a <code>text</code> key, as well as optional <code>onPress</code> and <code>style</code> keys (see example). <code>style</code> should be one of 'default', 'cancel' or 'destructive'.</td></tr>
<tr><td>type</td><td><a href="/react-native/docs/next/alertios.html#alerttype">AlertType</a></td><td>No</td><td>This configures the text input. One of 'plain-text', 'secure-text' or 'login-password'.</td></tr>
<tr><td>defaultValue</td><td>string</td><td>No</td><td>The default text in text input.</td></tr>
<tr><td>keyboardType</td><td>string</td><td>No</td><td>The keyboard type of first text field(if exists). One of 'default', 'email-address', 'numeric', 'phone-pad', 'ascii-capable', 'numbers-and-punctuation', 'url', 'number-pad', 'name-phone-pad', 'decimal-pad', 'twitter' or 'web-search'.</td></tr>
</tbody>
</table>
<p>Example with custom buttons:</p>
<pre><code class="hljs css javascript">AlertIOS.prompt(
<span class="hljs-string">'Enter password'</span>,
<span class="hljs-string">'Enter your password to claim your $1.5B in lottery winnings'</span>,
[
{
<span class="hljs-attr">text</span>: <span class="hljs-string">'Cancel'</span>,
<span class="hljs-attr">onPress</span>: <span class="hljs-function"><span class="hljs-params">()</span> =&gt;</span> <span class="hljs-built_in">console</span>.log(<span class="hljs-string">'Cancel Pressed'</span>),
<span class="hljs-attr">style</span>: <span class="hljs-string">'cancel'</span>,
},
{
<span class="hljs-attr">text</span>: <span class="hljs-string">'OK'</span>,
<span class="hljs-attr">onPress</span>: <span class="hljs-function">(<span class="hljs-params">password</span>) =&gt;</span> <span class="hljs-built_in">console</span>.log(<span class="hljs-string">'OK Pressed, password: '</span> + password),
},
],
<span class="hljs-string">'secure-text'</span>
);
</code></pre>
<p>,</p>
<p>Example with the default button and a custom callback:</p>
<pre><code class="hljs css javascript">AlertIOS.prompt(
<span class="hljs-string">'Update username'</span>,
<span class="hljs-literal">null</span>,
(text) =&gt; <span class="hljs-built_in">console</span>.log(<span class="hljs-string">'Your username is '</span> + text),
<span class="hljs-literal">null</span>,
<span class="hljs-string">'default'</span>
);
</code></pre>
<h2><a class="anchor" aria-hidden="true" name="type-definitions"></a><a href="#type-definitions" 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>Type Definitions</h2>
<h3><a class="anchor" aria-hidden="true" name="alerttype"></a><a href="#alerttype" 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>AlertType</h3>
<p>An Alert button type</p>
<table>
<thead>
<tr><th>Type</th></tr>
</thead>
<tbody>
<tr><td>$Enum</td></tr>
</tbody>
</table>
<p><strong>Constants:</strong></p>
<table>
<thead>
<tr><th>Value</th><th>Description</th></tr>
</thead>
<tbody>
<tr><td>default</td><td>Default alert with no inputs</td></tr>
<tr><td>plain-text</td><td>Plain text input alert</td></tr>
<tr><td>secure-text</td><td>Secure text input alert</td></tr>
<tr><td>login-password</td><td>Login and password alert</td></tr>
</tbody>
</table>
<hr>
<h3><a class="anchor" aria-hidden="true" name="alertbuttonstyle"></a><a href="#alertbuttonstyle" 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>AlertButtonStyle</h3>
<p>An Alert button style</p>
<table>
<thead>
<tr><th>Type</th></tr>
</thead>
<tbody>
<tr><td>$Enum</td></tr>
</tbody>
</table>
<p><strong>Constants:</strong></p>
<table>
<thead>
<tr><th>Value</th><th>Description</th></tr>
</thead>
<tbody>
<tr><td>default</td><td>Default button style</td></tr>
<tr><td>cancel</td><td>Cancel button style</td></tr>
<tr><td>destructive</td><td>Destructive button style</td></tr>
</tbody>
</table>
<hr>
<h3><a class="anchor" aria-hidden="true" name="buttonsarray"></a><a href="#buttonsarray" 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>ButtonsArray</h3>
<p>Array or buttons</p>
<table>
<thead>
<tr><th>Type</th></tr>
</thead>
<tbody>
<tr><td>Array</td></tr>
</tbody>
</table>
<p><strong>Properties:</strong></p>
<table>
<thead>
<tr><th>Name</th><th>Type</th><th>Description</th></tr>
</thead>
<tbody>
<tr><td>[text]</td><td>string</td><td>Button label</td></tr>
<tr><td>[onPress]</td><td>function</td><td>Callback function when button pressed</td></tr>
<tr><td>[style]</td><td><a href="/react-native/docs/next/alertios.html#alertbuttonstyle">AlertButtonStyle</a></td><td>Button style</td></tr>
</tbody>
</table>
<p><strong>Constants:</strong></p>
<table>
<thead>
<tr><th>Value</th><th>Description</th></tr>
</thead>
<tbody>
<tr><td>text</td><td>Button label</td></tr>
<tr><td>onPress</td><td>Callback function when button pressed</td></tr>
<tr><td>style</td><td>Button style</td></tr>
</tbody>
</table>
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