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<script src="https://snack.expo.io/embed.js" defer="defer"></script><title data-react-helmet="true">Alert · React Native</title><meta data-react-helmet="true" name="twitter:image:alt" content="Image for React Native"><meta data-react-helmet="true" name="docsearch:language" content="en"><meta data-react-helmet="true" name="docsearch:version" content="0.63"><meta data-react-helmet="true" name="docsearch:docusaurus_tag" content="docs-default-0.63"><meta data-react-helmet="true" property="og:image" content="https://reactnative.dev/img/logo-og.png"><meta data-react-helmet="true" name="twitter:card" content="summary"><meta data-react-helmet="true" name="twitter:image" content="https://reactnative.dev/img/logo-og.png"><meta data-react-helmet="true" property="og:title" content="Alert · React Native"><meta data-react-helmet="true" name="description" content="Launches an alert dialog with the specified title and message."><meta data-react-helmet="true" property="og:description" content="Launches an alert dialog with the specified title and message."><meta data-react-helmet="true" property="og:url" content="https://reactnative.dev/docs/alert"><link data-react-helmet="true" rel="shortcut icon" href="/img/favicon.ico"><link data-react-helmet="true" rel="preconnect" href="https://BH4D9OD16A-dsn.algolia.net" crossorigin="anonymous"><link data-react-helmet="true" rel="canonical" href="https://reactnative.dev/docs/alert"><link rel="stylesheet" href="/styles.f56da522.css">
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padding-vert--lg docItemWrapper_1hMI"><div class="row"><div class="col docItemCol_2AGf"><div class="docItemContainer_1tAC"><article><header><h1 class="docTitle_cWlf">Alert</h1></header><div class="markdown"><p>Launches an alert dialog with the specified title and message.</p><p>Optionally provide a list of buttons. Tapping any button will fire the respective onPress callback and dismiss the alert. By default, the only button will be an 'OK' button.</p><p>This is an API that works both on Android and iOS and can show static alerts. To show an alert that prompts the user to enter some information, see <code>AlertIOS</code>; entering text in an alert is common on iOS only.</p><h3><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_E4oP" id="example"></a>Example<a class="hash-link" href="#example" title="Direct link to heading">#</a></h3><div><ul role="tablist" aria-orientation="horizontal" class="tabs"><li role="tab" tabindex="0" aria-selected="true" class="tabs__item tabItem_2uuE tabs__item--active">Function Component</li><li role="tab" tabindex="0" aria-selected="false" class="tabs__item tabItem_2uuE">Class Component</li></ul><div class="margin-vert--md"><div role="tabpanel"><div class="snack-player" data-snack-name="Alert Function Component Example" data-snack-description="Example usage" data-snack-code="import%20React%2C%20%7B%20useState%20%7D%20from%20%22react%22%3B%0Aimport%20%7B%20View%2C%20StyleSheet%2C%20Button%2C%20Alert%20%7D%20from%20%22react-native%22%3B%0A%0Aconst%20App%20%3D%20()%20%3D%3E%20%7B%0A%20%20const%20createTwoButtonAlert%20%3D%20()%20%3D%3E%0A%20%20%20%20Alert.alert(%0A%20%20%20%20%20%20%22Alert%20Title%22%2C%0A%20%20%20%20%20%20%22My%20Alert%20Msg%22%2C%0A%20%20%20%20%20%20%5B%0A%20%20%20%20%20%20%20%20%7B%0A%20%20%20%20%20%20%20%20%20%20text%3A%20%22Cancel%22%2C%0A%20%20%20%20%20%20%20%20%20%20onPress%3A%20()%20%3D%3E%20console.log(%22Cancel%20Pressed%22)%2C%0A%20%20%20%20%20%20%20%20%20%20style%3A%20%22cancel%22%0A%20%20%20%20%20%20%20%20%7D%2C%0A%20%20%20%20%20%20%20%20%7B%20text%3A%20%22OK%22%2C%20onPress%3A%20()%20%3D%3E%20console.log(%22OK%20Pressed%22)%20%7D%0A%20%20%20%20%20%20%5D%2C%0A%20%20%20%20%20%20%7B%20cancelable%3A%20false%20%7D%0A%20%20%20%20)%3B%0A%0A%20%20const%20createThreeButtonAlert%20%3D%20()%20%3D%3E%0A%20%20%20%20Alert.alert(%0A%20%20%20%20%20%20%22Alert%20Title%22%2C%0A%20%20%20%20%20%20%22My%20Alert%20Msg%22%2C%0A%20%20%20%20%20%20%5B%0A%20%20%20%20%20%20%20%20%7B%0A%20%20%20%20%20%20%20%20%20%20text%3A%20%22Ask%20me%20later%22%2C%0A%20%20%20%20%20%20%20%20%20%20onPress%3A%20()%20%3D%3E%20console.log(%22Ask%20me%20later%20pressed%22)%0A%20%20%20%20%20%20%20%20%7D%2C%0A%20%20%20%20%20%20%20%20%7B%0A%20%20%20%20%20%20%20%20%20%20text%3A%20%22Cancel%22%2C%0A%20%20%20%20%20%20%20%20%20%20onPress%3A%20()%20%3D%3E%20console.log(%22Cancel%20Pressed%22)%2C%0A%20%20%20%20%20%20%20%20%20%20style%3A%20%22cancel%22%0A%20%20%20%20%20%20%20%20%7D%2C%0A%20%20%20%20%20%20%20%20%7B%20text%3A%20%22OK%22%2C%20onPress%3A%20()%20%3D%3E%20console.log(%22OK%20Pressed%22)%20%7D%0A%20%20%20%20%20%20%5D%2C%0A%20%20%20%20%20%20%7B%20cancelable%3A%20false%20%7D%0A%20%20%20%20)%3B%0A%0A%20%20return%20(%0A%20%20%20%20%3CView%20style%3D%7Bstyles.container%7D%3E%0A%20%20%20%20%20%20%3CButton%20title%3D%7B%222-Button%20Alert%22%7D%20onPress%3D%7BcreateTwoButtonAlert%7D%20%2F%3E%0A%0A%20%20%20%20%20%20%3CButton%20title%3D%7B%223-Button%20Alert%22%7D%20onPress%3D%7BcreateThreeButtonAlert%7D%20%2F%3E%0A%20%20%20%20%3C%2FView%3E%0A%20%20)%3B%0A%7D%0A%0Aconst%20styles%20%3D%20StyleSheet.create(%7B%0A%20%20container%3A%20%7B%0A%20%20%20%20flex%3A%201%2C%0A%20%20%20%20justifyContent%3A%20%22space-around%22%2C%0A%20%20%20%20alignItems%3A%20%22center%22%0A%20%20%7D%0A%7D)%3B%0A%0Aexport%20default%20App%3B" data-snack-dependencies="" data-snack-platform="web" data-snack-supported-platforms="ios,android" data-snack-theme="light" data-snack-preview="true" data-snack-loading="lazy"></div></div><div role="tabpanel" hidden=""><div class="snack-player" data-snack-name="Alert Class Component Example" data-snack-description="Example usage" data-snack-code="import%20React%2C%20%7B%20Component%20%7D%20from%20%22react%22%3B%0Aimport%20%7B%20View%2C%20StyleSheet%2C%20Button%2C%20Alert%20%7D%20from%20%22react-native%22%3B%0A%0Aclass%20App%20extends%20Component%20%7B%0A%20%20createTwoButtonAlert%20%3D%20()%20%3D%3E%0A%20%20%20%20Alert.alert(%0A%20%20%20%20%20%20%22Alert%20Title%22%2C%0A%20%20%20%20%20%20%22My%20Alert%20Msg%22%2C%0A%20%20%20%20%20%20%5B%0A%20%20%20%20%20%20%20%20%7B%0A%20%20%20%20%20%20%20%20%20%20text%3A%20%22Cancel%22%2C%0A%20%20%20%20%20%20%20%20%20%20onPress%3A%20()%20%3D%3E%20console.log(%22Cancel%20Pressed%22)%2C%0A%20%20%20%20%20%20%20%20%20%20style%3A%20%22cancel%22%0A%20%20%20%20%20%20%20%20%7D%2C%0A%20%20%20%20%20%20%20%20%7B%20text%3A%20%22OK%22%2C%20onPress%3A%20()%20%3D%3E%20console.log(%22OK%20Pressed%22)%20%7D%0A%20%20%20%20%20%20%5D%2C%0A%20%20%20%20%20%20%7B%20cancelable%3A%20false%20%7D%0A%20%20%20%20)%3B%0A%0A%20%20createThreeButtonAlert%20%3D%20()%20%3D%3E%0A%20%20%20%20Alert.alert(%0A%20%20%20%20%20%20%22Alert%20Title%22%2C%0A%20%20%20%20%20%20%22My%20Alert%20Msg%22%2C%0A%20%20%20%20%20%20%5B%0A%20%20%20%20%20%20%20%20%7B%0A%20%20%20%20%20%20%20%20%20%20text%3A%20%22Ask%20me%20later%22%2C%0A%20%20%20%20%20%20%20%20%20%20onPress%3A%20()%20%3D%3E%20console.log(%22Ask%20me%20later%20pressed%22)%0A%20%20%20%20%20%20%20%20%7D%2C%0A%20%20%20%20%20%20%20%20%7B%0A%20%20%20%20%20%20%20%20%20%20text%3A%20%22Cancel%22%2C%0A%20%20%20%20%20%20%20%20%20%20onPress%3A%20()%20%3D%3E%20console.log(%22Cancel%20Pressed%22)%2C%0A%20%20%20%20%20%20%20%20%20%20style%3A%20%22cancel%22%0A%20%20%20%20%20%20%20%20%7D%2C%0A%20%20%20%20%20%20%20%20%7B%20text%3A%20%22OK%22%2C%20onPress%3A%20()%20%3D%3E%20console.log(%22OK%20Pressed%22)%20%7D%0A%20%20%20%20%20%20%5D%2C%0A%20%20%20%20%20%20%7B%20cancelable%3A%20false%20%7D%0A%20%20%20%20)%3B%0A%0A%20%20render()%20%7B%0A%20%20%20%20return%20(%0A%20%20%20%20%20%20%3CView%20style%3D%7Bstyles.container%7D%3E%0A%20%20%20%20%20%20%20%20%3CButton%20title%3D%7B%222-Button%20Alert%22%7D%20onPress%3D%7Bthis.createTwoButtonAlert%7D%20%2F%3E%0A%0A%20%20%20%20%20%20%20%20%3CButton%0A%20%20%20%20%20%20%20%20%20%20title%3D%7B%223-Button%20Alert%22%7D%0A%20%20%20%20%20%20%20%20%20%20onPress%3D%7Bthis.createThreeButtonAlert%7D%0A%20%20%20%20%20%20%20%20%2F%3E%0A%20%20%20%20%20%20%3C%2FView%3E%0A%20%20%20%20)%3B%0A%20%20%7D%0A%7D%0A%0Aconst%20styles%20%3D%20StyleSheet.create(%7B%0A%20%20container%3A%20%7B%0A%20%20%20%20flex%3A%201%2C%0A%20%20%20%20justifyContent%3A%20%22space-around%22%2C%0A%20%20%20%20alignItems%3A%20%22center%22%0A%20%20%7D%0A%7D)%3B%0A%0Aexport%20default%20App%3B" data-snack-dependencies="" data-snack-platform="web" data-snack-supported-platforms="ios,android" data-snack-theme="light" data-snack-preview="true" data-snack-loading="lazy"></div></div></div></div><h2><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_E4oP" id="ios"></a>iOS<a class="hash-link" href="#ios" title="Direct link to heading">#</a></h2><p>On iOS you can specify any number of buttons. Each button can optionally specify a style, which is one of 'default', 'cancel', or 'destructive'.</p><h2><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_E4oP" id="android"></a>Android<a class="hash-link" href="#android" title="Direct link to heading">#</a></h2><p>On Android at most three buttons can be specified. Android has a concept of a neutral, negative and a positive button:</p><ul><li>If you specify one button, it will be the 'positive' one (such as 'OK')</li><li>Two buttons mean 'negative', 'positive' (such as 'Cancel', 'OK')</li><li>Three buttons mean 'neutral', 'negative', 'positive' (such as 'Later', 'Cancel', 'OK')</li></ul><p>By default alerts on Android can be dismissed by tapping outside of the alert box. This event can be handled by providing an optional <code>options</code> parameter, with an <code>onDismiss</code> callback property <code>{ onDismiss: () => {} }</code>.</p><p>Alternatively, the dismissing behavior can be disabled altogether by providing an optional options parameter with the cancelable property set to false i.e. <code>{ cancelable: false }</code>.</p><p>Example usage:</p><div class="mdxCodeBlock_1daz"><div class="codeBlockContent_2es_"><div tabindex="0" class="prism-code language-jsx codeBlock_27aQ thin-scrollbar"><div class="codeBlockLines_2rCb" style="color:#FFFFFF;background:#282C34"><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token comment" style="color:#93a1a1">// Works on both Android and iOS</span><span class="token plain"></span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token plain">Alert</span><span class="token punctuation" style="color:#657b83">.</span><span class="token function" style="color:#79b6f2">alert</span><span class="token punctuation" style="color:#657b83">(</span><span class="token plain"></span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token plain"> </span><span class="token string" style="color:#8dc891">'Alert Title'</span><span class="token punctuation" style="color:#657b83">,</span><span class="token plain"></span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token plain"> </span><span class="token string" style="color:#8dc891">'My Alert Msg'</span><span class="token punctuation" style="color:#657b83">,</span><span class="token plain"></span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token plain"> </span><span class="token punctuation" style="color:#657b83">[</span><span class="token plain"></span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token plain"> </span><span class="token punctuation" style="color:#657b83">{</span><span class="token plain"></span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token plain"> text</span><span class="token operator" style="color:#fc929e">:</span><span class="token plain"> </span><span class="token string" style="color:#8dc891">'Ask me later'</span><span class="token punctuation" style="color:#657b83">,</span><span class="token plain"></span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token plain"> </span><span class="token function-variable function" style="color:#79b6f2">onPress</span><span class="token operator" style="color:#fc929e">:</span><span class="token plain"> </span><span class="token punctuation" style="color:#657b83">(</span><span class="token punctuation" style="color:#657b83">)</span><span class="token plain"> </span><span class="token operator" style="color:#fc929e">=></span><span class="token plain"> console</span><span class="token punctuation" style="color:#657b83">.</span><span class="token function" style="color:#79b6f2">log</span><span class="token punctuation" style="color:#657b83">(</span><span class="token string" style="color:#8dc891">'Ask me later pressed'</span><span class="token punctuation" style="color:#657b83">)</span><span class="token plain"></span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token plain"> </span><span class="token punctuation" style="color:#657b83">}</span><span class="token punctuation" style="color:#657b83">,</span><span class="token plain"></span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token plain"> </span><span class="token punctuation" style="color:#657b83">{</span><span class="token plain"></span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token plain"> text</span><span class="token operator" style="color:#fc929e">:</span><span class="token plain"> </span><span class="token string" style="color:#8dc891">'Cancel'</span><span class="token punctuation" style="color:#657b83">,</span><span class="token plain"></span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token plain"> </span><span class="token function-variable function" style="color:#79b6f2">onPress</span><span class="token operator" style="color:#fc929e">:</span><span class="token plain"> </span><span class="token punctuation" style="color:#657b83">(</span><span class="token punctuation" style="color:#657b83">)</span><span class="token plain"> </span><span class="token operator" style="color:#fc929e">=></span><span class="token plain"> console</span><span class="token punctuation" style="color:#657b83">.</span><span class="token function" style="color:#79b6f2">log</span><span class="token punctuation" style="color:#657b83">(</span><span class="token string" style="color:#8dc891">'Cancel Pressed'</span><span class="token punctuation" style="color:#657b83">)</span><span class="token punctuation" style="color:#657b83">,</span><span class="token plain"></span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token plain"> style</span><span class="token operator" style="color:#fc929e">:</span><span class="token plain"> </span><span class="token string" style="color:#8dc891">'cancel'</span><span class="token plain"></span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token plain"> </span><span class="token punctuation" style="color:#657b83">}</span><span class="token punctuation" style="color:#657b83">,</span><span class="token plain"></span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token plain"> </span><span class="token punctuation" style="color:#657b83">{</span><span class="token plain"> text</span><span class="token operator" style="color:#fc929e">:</span><span class="token plain"> </span><span class="token string" style="color:#8dc891">'OK'</span><span class="token punctuation" style="color:#657b83">,</span><span class="token plain"> </span><span class="token function-variable function" style="color:#79b6f2">onPress</span><span class="token operator" style="color:#fc929e">:</span><span class="token plain"> </span><span class="token punctuation" style="color:#657b83">(</span><span class="token punctuation" style="color:#657b83">)</span><span class="token plain"> </span><span class="token operator" style="color:#fc929e">=></span><span class="token plain"> console</span><span class="token punctuation" style="color:#657b83">.</span><span class="token function" style="color:#79b6f2">log</span><span class="token punctuation" style="color:#657b83">(</span><span class="token string" style="color:#8dc891">'OK Pressed'</span><span class="token punctuation" style="color:#657b83">)</span><span class="token plain"> </span><span class="token punctuation" style="color:#657b83">}</span><span class="token plain"></span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token plain"> </span><span class="token punctuation" style="color:#657b83">]</span><span class="token punctuation" style="color:#657b83">,</span><span class="token plain"></span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token plain"> </span><span class="token punctuation" style="color:#657b83">{</span><span class="token plain"> cancelable</span><span class="token operator" style="color:#fc929e">:</span><span class="token plain"> </span><span class="token boolean" style="color:#ff8b50">false</span><span class="token plain"> </span><span class="token punctuation" style="color:#657b83">}</span><span class="token plain"></span></div><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token plain"></span><span class="token punctuation" style="color:#657b83">)</span><span class="token punctuation" style="color:#657b83">;</span></div></div></div><button type="button" aria-label="Copy code to clipboard" class="copyButton_2bml">Copy</button></div></div><hr><h1><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_E4oP" id="reference"></a>Reference<a class="hash-link" href="#reference" title="Direct link to heading">#</a></h1><h2><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_E4oP" id="methods"></a>Methods<a class="hash-link" href="#methods" title="Direct link to heading">#</a></h2><h3><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_E4oP" id="alert"></a><code>alert()</code><a class="hash-link" href="#alert" title="Direct link to heading">#</a></h3><div class="mdxCodeBlock_1daz"><div class="codeBlockContent_2es_"><div tabindex="0" class="prism-code language-jsx codeBlock_27aQ thin-scrollbar"><div class="codeBlockLines_2rCb" style="color:#FFFFFF;background:#282C34"><div class="token-line" style="color:#FFFFFF;background:#282C34"><span class="token keyword" style="color:#c5a5c5">static</span><span class="token plain"> </span><span class="token function" style="color:#79b6f2">alert</span><span class="token punctuation" style="color:#657b83">(</span><span class="token plain">title</span><span class="token punctuation" style="color:#657b83">,</span><span class="token plain"> message</span><span class="token operator" style="color:#fc929e">?</span><span class="token punctuation" style="color:#657b83">,</span><span class="token plain"> buttons</span><span class="token operator" style="color:#fc929e">?</span><span class="token punctuation" style="color:#657b83">,</span><span class="token plain"> options</span><span class="token operator" style="color:#fc929e">?</span><span class="token punctuation" style="color:#657b83">)</span></div></div></div><button type="button" aria-label="Copy code to clipboard" class="copyButton_2bml">Copy</button></div></div></div></article><div class="docMetadata margin-vert--xl"><div class="row"><div class="col"><a href="https://github.com/facebook/react-native-website/blob/master/website/versioned_docs/version-0.63/alert.md" target="_blank" rel="noreferrer noopener"><svg fill="currentColor" height="1.2em" width="1.2em" preserveAspectRatio="xMidYMid meet" role="img" viewBox="0 0 40 40" class="iconEdit_2Hwv"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div><div class="col text--right"><em><small class="docMetadata-updated">Last updated on <time datetime="2020-10-29T04:19:29.000Z" class="docLastUpdatedAt_1gIo">10/29/2020</time></small></em></div></div></div><div class="margin-vert--lg"><nav class="pagination-nav" aria-label="Blog list page navigation"><div class="pagination-nav__item"><a class="pagination-nav__link" href="/docs/accessibilityinfo"><div class="pagination-nav__sublabel">Previous</div><div class="pagination-nav__label">« AccessibilityInfo</div></a></div><div class="pagination-nav__item pagination-nav__item--next"><a class="pagination-nav__link" href="/docs/animated"><div class="pagination-nav__sublabel">Next</div><div class="pagination-nav__label">Animated »</div></a></div></nav></div></div></div><div class="col col--3"><div class="tableOfContents_1zTD thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#example" class="table-of-contents__link">Example</a></li><li><a href="#ios" class="table-of-contents__link">iOS</a></li><li><a href="#android" class="table-of-contents__link">Android</a></li><li><a href="#methods" class="table-of-contents__link">Methods</a><ul><li><a href="#alert" class="table-of-contents__link"><code>alert()</code></a></li></ul></li></ul></div></div></div></div></main></div></div><footer class="footer footer--dark"><div class="container"><div class="row 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