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<script src="https://snack.expo.io/embed.js" defer="defer"></script><title data-react-helmet="true">ImageStore · React Native</title><meta data-react-helmet="true" property="twitter:image" content="https://reactnative.dev/img/logo-og.png"><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="ImageStore · React Native"><meta data-react-helmet="true" name="description" content="Deprecated. Use expo-file-system or react-native-fs instead."><meta data-react-helmet="true" property="og:description" content="Deprecated. Use expo-file-system or react-native-fs instead."><meta data-react-helmet="true" property="og:url" content="https://reactnative.dev/docs/imagestore"><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/imagestore"><link rel="stylesheet" href="/styles.fccefeba.css">
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href="/docs/next/getting-started">Next</a></li><li class="menu__list-item"><a aria-current="page" class="menu__link menu__link--active" href="/docs/imagestore">0.63</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/0.62/imagestore">0.62</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/0.61/imagestore">0.61</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/0.60/imagestore">0.60</a></li><li class="menu__list-item"><a class="menu__link" href="/versions">All versions</a></li></ul></li><li class="menu__list-item"><a href="https://github.com/facebook/react-native" target="_blank" rel="noopener noreferrer" class="menu__link navbar-github-link" aria-label="GitHub repository"></a></li></ul></div></div></div></nav><div class="main-wrapper"><div class="docPage_2UBv"><main class="docMainContainer_1rYT"><div class="container padding-vert--lg docItemWrapper_1Hme"><div class="row"><div class="col docItemCol_2AGf"><div class="docItemContainer_1tAC"><article><header><h1 class="docTitle_cWlf">ImageStore</h1></header><div class="markdown"><blockquote><p><strong>Deprecated.</strong> Use <a href="https://github.com/expo/expo/tree/master/packages/expo-file-system" target="_blank" rel="noopener noreferrer">expo-file-system</a> or <a href="https://github.com/itinance/react-native-fs" target="_blank" rel="noopener noreferrer">react-native-fs</a> instead.</p></blockquote><h3><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_3pqN" id="methods"></a>Methods<a aria-hidden="true" tabindex="-1" class="hash-link" href="#methods" title="Direct link to heading">#</a></h3><ul><li><a href="/docs/imagestore#hasimagefortag"><code>hasImageForTag</code></a></li><li><a href="/docs/imagestore#removeimagefortag"><code>removeImageForTag</code></a></li><li><a href="/docs/imagestore#addimagefrombase64"><code>addImageFromBase64</code></a></li><li><a href="/docs/imagestore#getbase64fortag"><code>getBase64ForTag</code></a></li></ul><hr><h1><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_3pqN" id="reference"></a>Reference<a aria-hidden="true" tabindex="-1" class="hash-link" href="#reference" title="Direct link to heading">#</a></h1><h2><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_3pqN" id="methods-1"></a>Methods<a aria-hidden="true" tabindex="-1" class="hash-link" href="#methods-1" title="Direct link to heading">#</a></h2><h3><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_3pqN" id="hasimagefortag"></a><code>hasImageForTag()</code><a aria-hidden="true" tabindex="-1" class="hash-link" href="#hasimagefortag" title="Direct link to heading">#</a></h3><div class="mdxCodeBlock_xYIz"><div class="codeBlockContent_rlEb"><button tabindex="0" type="button" aria-label="Copy code to clipboard" class="copyButton_kOW4">Copy</button><div class="prism-code language-jsx codeBlock_1AP7"><div class="codeBlockLines_1boI" 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">hasImageForTag</span><span class="token punctuation" style="color:#657b83">(</span><span class="token plain">uri</span><span class="token punctuation" style="color:#657b83">,</span><span class="token plain"> callback</span><span class="token punctuation" style="color:#657b83">)</span></div></div></div></div></div><p>Check if the ImageStore contains image data for the specified URI. @platform ios</p><hr><h3><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_3pqN" id="removeimagefortag"></a><code>removeImageForTag()</code><a aria-hidden="true" tabindex="-1" class="hash-link" href="#removeimagefortag" title="Direct link to heading">#</a></h3><div class="mdxCodeBlock_xYIz"><div class="codeBlockContent_rlEb"><button tabindex="0" type="button" aria-label="Copy code to clipboard" class="copyButton_kOW4">Copy</button><div class="prism-code language-jsx codeBlock_1AP7"><div class="codeBlockLines_1boI" 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">removeImageForTag</span><span class="token punctuation" style="color:#657b83">(</span><span class="token plain">uri</span><span class="token punctuation" style="color:#657b83">)</span></div></div></div></div></div><p>Delete an image from the ImageStore. Images are stored in memory and must be manually removed when you are finished with them, otherwise they will continue to use up RAM until the app is terminated. It is safe to call <code>removeImageForTag()</code> without first calling <code>hasImageForTag()</code>, it will fail silently. @platform ios</p><hr><h3><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_3pqN" id="addimagefrombase64"></a><code>addImageFromBase64()</code><a aria-hidden="true" tabindex="-1" class="hash-link" href="#addimagefrombase64" title="Direct link to heading">#</a></h3><div class="mdxCodeBlock_xYIz"><div class="codeBlockContent_rlEb"><button tabindex="0" type="button" aria-label="Copy code to clipboard" class="copyButton_kOW4">Copy</button><div class="prism-code language-jsx codeBlock_1AP7"><div class="codeBlockLines_1boI" 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">addImageFromBase64</span><span class="token punctuation" style="color:#657b83">(</span><span class="token plain">base64ImageData</span><span class="token punctuation" style="color:#657b83">,</span><span class="token plain"> success</span><span class="token punctuation" style="color:#657b83">,</span><span class="token plain"> failure</span><span class="token punctuation" style="color:#657b83">)</span></div></div></div></div></div><p>Stores a base64-encoded image in the ImageStore, and returns a URI that can be used to access or display the image later. Images are stored in memory only, and must be manually deleted when you are finished with them by calling <code>removeImageForTag()</code>.</p><p>Note that it is very inefficient to transfer large quantities of binary data between JS and native code, so you should avoid calling this more than necessary. @platform ios</p><hr><h3><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_3pqN" id="getbase64fortag"></a><code>getBase64ForTag()</code><a aria-hidden="true" tabindex="-1" class="hash-link" href="#getbase64fortag" title="Direct link to heading">#</a></h3><div class="mdxCodeBlock_xYIz"><div class="codeBlockContent_rlEb"><button tabindex="0" type="button" aria-label="Copy code to clipboard" class="copyButton_kOW4">Copy</button><div class="prism-code language-jsx codeBlock_1AP7"><div class="codeBlockLines_1boI" 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">getBase64ForTag</span><span class="token punctuation" style="color:#657b83">(</span><span class="token plain">uri</span><span class="token punctuation" style="color:#657b83">,</span><span class="token plain"> success</span><span class="token punctuation" style="color:#657b83">,</span><span class="token plain"> failure</span><span class="token punctuation" style="color:#657b83">)</span></div></div></div></div></div><p>Retrieves the base64-encoded data for an image in the ImageStore. If the specified URI does not match an image in the store, the failure callback will be called.</p><p>Note that it is very inefficient to transfer large quantities of binary data between JS and native code, so you should avoid calling this more than necessary. To display an image in the ImageStore, you can pass the URI to an <code>&lt;Image/&gt;</code> component; there is no need to retrieve the base64 data.</p></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/imagestore.md" target="_blank" rel="noreferrer noopener"><svg fill="currentColor" height="1.2em" width="1.2em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 40 40" style="margin-right:0.3em;vertical-align:sub"><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"></div><div class="pagination-nav__item pagination-nav__item--next"></div></nav></div></div></div><div class="col col--3"><div class="tableOfContents_3iuQ"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#methods" class="table-of-contents__link">Methods</a></li><li><a href="#methods-1" class="table-of-contents__link">Methods</a><ul><li><a href="#hasimagefortag" class="table-of-contents__link"><code>hasImageForTag()</code></a></li><li><a href="#removeimagefortag" class="table-of-contents__link"><code>removeImageForTag()</code></a></li><li><a href="#addimagefrombase64" class="table-of-contents__link"><code>addImageFromBase64()</code></a></li><li><a href="#getbase64fortag" class="table-of-contents__link"><code>getBase64ForTag()</code></a></li></ul></li></ul></div></div></div></div></main></div></div><footer class="footer footer--dark"><div class="container"><div class="row footer__links"><div class="col footer__col"><h4 class="footer__title">Docs</h4><ul class="footer__items"><li class="footer__item"><a class="footer__link-item" href="/docs/getting-started">Getting Started</a></li><li class="footer__item"><a class="footer__link-item" href="/docs/tutorial">Tutorial</a></li><li class="footer__item"><a class="footer__link-item" href="/docs/components-and-apis">Components and APIs</a></li><li class="footer__item"><a class="footer__link-item" href="/docs/more-resources">More Resources</a></li></ul></div><div class="col footer__col"><h4 class="footer__title">Community</h4><ul class="footer__items"><li class="footer__item"><a class="footer__link-item" href="/help">The React Native Community</a></li><li class="footer__item"><a class="footer__link-item" href="/showcase">Who&#x27;s using React Native?</a></li><li class="footer__item"><a href="https://stackoverflow.com/questions/tagged/react-native" target="_blank" rel="noopener noreferrer" class="footer__link-item">Ask Questions on Stack Overflow</a></li><li class="footer__item"><a href="https://github.com/facebook/react-native/blob/master/CONTRIBUTING.md" target="_blank" rel="noopener noreferrer" class="footer__link-item">Contributor Guide</a></li><li class="footer__item"><a href="https://dev.to/t/reactnative" target="_blank" rel="noopener noreferrer" class="footer__link-item">DEV Community</a></li></ul></div><div class="col footer__col"><h4 class="footer__title">Find us</h4><ul class="footer__items"><li class="footer__item"><a class="footer__link-item" href="/blog">Blog</a></li><li class="footer__item"><a href="https://twitter.com/reactnative" target="_blank" rel="noopener noreferrer" class="footer__link-item">Twitter</a></li><li class="footer__item"><a href="https://github.com/facebook/react-native" target="_blank" rel="noopener noreferrer" class="footer__link-item">GitHub</a></li></ul></div><div class="col footer__col"><h4 class="footer__title">More</h4><ul class="footer__items"><li class="footer__item"><a href="https://reactjs.org/" target="_blank" rel="noopener noreferrer" class="footer__link-item">React</a></li><li class="footer__item"><a href="https://opensource.facebook.com/legal/privacy" target="_blank" rel="noopener noreferrer" class="footer__link-item">Privacy Policy</a></li><li class="footer__item"><a href="https://opensource.facebook.com/legal/terms" target="_blank" rel="noopener noreferrer" class="footer__link-item">Terms of Service</a></li></ul></div></div><div class="text--center"><div class="margin-bottom--sm"><a href="https://opensource.facebook.com" target="_blank" rel="noopener noreferrer" class="footerLogoLink_19Ac"><img class="footer__logo" alt="Facebook Open Source Logo" src="/img/oss_logo.png"></a></div><div>Copyright © 2020 Facebook, Inc.</div></div></div></footer></div>
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