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<html lang="en"><head><meta charset="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>FlatList · React Native</title><meta name="viewport" content="width=device-width"/><meta name="generator" content="Docusaurus"/><meta property="og:title" content="FlatList · 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="A performant interface for rendering simple, flat lists, supporting the most handy features:"/><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" 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href="/react-native/docs/0.49/headless-js-android.html">Headless JS</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/signed-apk-android.html">Generating Signed APK</a></li></ul></div><div class="navGroup navGroupActive"><h3>Contributing</h3><ul><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/contributing.html">How to Contribute</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/maintainers.html">What to Expect from Maintainers</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/building-from-source.html">Building React Native from source</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/testing.html">Testing your Changes</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/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/0.49/activityindicator.html">ActivityIndicator</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/button.html">Button</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/datepickerios.html">DatePickerIOS</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/drawerlayoutandroid.html">DrawerLayoutAndroid</a></li><li class="navListItem navListItemActive"><a class="navItem navItemActive" href="/react-native/docs/0.49/flatlist.html">FlatList</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/image.html">Image</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/keyboardavoidingview.html">KeyboardAvoidingView</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/listview.html">ListView</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/maskedviewios.html">MaskedViewIOS</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/modal.html">Modal</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/navigatorios.html">NavigatorIOS</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/picker.html">Picker</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/pickerios.html">PickerIOS</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/progressbarandroid.html">ProgressBarAndroid</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/progressviewios.html">ProgressViewIOS</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/refreshcontrol.html">RefreshControl</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/scrollview.html">ScrollView</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/sectionlist.html">SectionList</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/segmentedcontrolios.html">SegmentedControlIOS</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/slider.html">Slider</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/snapshotviewios.html">SnapshotViewIOS</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/statusbar.html">StatusBar</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/switch.html">Switch</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/tabbarios.html">TabBarIOS</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/tabbarios-item.html">TabBarIOS.Item</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/text.html">Text</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/textinput.html">TextInput</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/toolbarandroid.html">ToolbarAndroid</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/touchablehighlight.html">TouchableHighlight</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/touchablenativefeedback.html">TouchableNativeFeedback</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/touchableopacity.html">TouchableOpacity</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/touchablewithoutfeedback.html">TouchableWithoutFeedback</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/view.html">View</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/viewpagerandroid.html">ViewPagerAndroid</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/virtualizedlist.html">VirtualizedList</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/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/0.49/accessibilityinfo.html">AccessibilityInfo</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/actionsheetios.html">ActionSheetIOS</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/alert.html">Alert</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/alertios.html">AlertIOS</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/animated.html">Animated</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/appregistry.html">AppRegistry</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/appstate.html">AppState</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/asyncstorage.html">AsyncStorage</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/backandroid.html">BackAndroid</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/backhandler.html">BackHandler</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/cameraroll.html">CameraRoll</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/clipboard.html">Clipboard</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/datepickerandroid.html">DatePickerAndroid</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/dimensions.html">Dimensions</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/easing.html">Easing</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/geolocation.html">Geolocation</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/imageeditor.html">ImageEditor</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/imagepickerios.html">ImagePickerIOS</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/imagestore.html">ImageStore</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/image-style-props.html">Image Style Props</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/interactionmanager.html">InteractionManager</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/keyboard.html">Keyboard</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/layout-props.html">Layout Props</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/layoutanimation.html">LayoutAnimation</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/linking.html">Linking</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/listviewdatasource.html">ListViewDataSource</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/netinfo.html">NetInfo</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/panresponder.html">PanResponder</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/permissionsandroid.html">PermissionsAndroid</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/pixelratio.html">PixelRatio</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/pushnotificationios.html">PushNotificationIOS</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/settings.html">Settings</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/shadow-props.html">Shadow Props</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/share.html">Share</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/statusbarios.html">StatusBarIOS</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/stylesheet.html">StyleSheet</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/systrace.html">Systrace</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/text-style-props.html">Text Style Props</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/timepickerandroid.html">TimePickerAndroid</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/toastandroid.html">ToastAndroid</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/transforms.html">Transforms</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/vibration.html">Vibration</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/vibrationios.html">VibrationIOS</a></li><li class="navListItem"><a class="navItem" href="/react-native/docs/0.49/view-style-props.html">View Style Props</a></li></ul></div></div></section></div><script>
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var toggler = document.getElementById('navToggler');
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var nav = document.getElementById('docsNav');
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toggler.onclick = function() {
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nav.classList.toggle('docsSliderActive');
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};
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</script></nav></div><div class="container mainContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/facebook/react-native-website/blob/master/docs/flatlist.md" target="_blank">Edit</a><h1>FlatList</h1></header><article><div><span><p>A performant interface for rendering simple, flat lists, supporting the most handy features:</p>
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<ul>
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<li>Fully cross-platform.</li>
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<li>Optional horizontal mode.</li>
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<li>Configurable viewability callbacks.</li>
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<li>Header support.</li>
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<li>Footer support.</li>
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<li>Separator support.</li>
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<li>Pull to Refresh.</li>
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<li>Scroll loading.</li>
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<li>ScrollToIndex support.</li>
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</ul>
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<p>If you need section support, use <a href="/react-native/docs/0.49/sectionlist.html"><code><SectionList></code></a>.</p>
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<p>Minimal Example:</p>
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<pre><code class="hljs"><FlatList
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data={[{key: 'a'}, {key: 'b'}]}
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renderItem={({item}) => <Text>{item.key}</Text>}
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/>
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</code></pre>
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<p>More complex example demonstrating <code>PureComponent</code> usage for perf optimization and avoiding bugs.</p>
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<ul>
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<li>By binding the <code>onPressItem</code> handler, the props will remain <code>===</code> and <code>PureComponent</code> will prevent wasteful re-renders unless the actual <code>id</code>, <code>selected</code>, or <code>title</code> props change, even if the inner <code>SomeOtherWidget</code> has no such optimizations.</li>
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<li>By passing <code>extraData={this.state}</code> to <code>FlatList</code> we make sure <code>FlatList</code> itself will re-render when the <code>state.selected</code> changes. Without setting this prop, <code>FlatList</code> would not know it needs to re-render any items because it is also a <code>PureComponent</code> and the prop comparison will not show any changes.</li>
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<li><code>keyExtractor</code> tells the list to use the <code>id</code>s for the react keys.</li>
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</ul>
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<pre><code class="hljs">class MyListItem extends React.PureComponent {
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_onPress = () => {
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this.props.onPressItem(this.props.id);
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};
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render() {
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return (
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<SomeOtherWidget
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{...this.props}
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onPress={this._onPress}
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/>
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)
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}
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}
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class MyList extends React.PureComponent {
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state = {selected: (new Map(): Map<string, boolean>)};
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_keyExtractor = (item, index) => item.id;
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_onPressItem = (id: string) => {
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// updater functions are preferred for transactional updates
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this.setState((state) => {
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// copy the map rather than modifying state.
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const selected = new Map(state.selected);
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selected.set(id, !selected.get(id)); // toggle
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return {selected};
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});
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};
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_renderItem = ({item}) => (
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<MyListItem
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id={item.id}
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onPressItem={this._onPressItem}
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selected={!!this.state.selected.get(item.id)}
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title={item.title}
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/>
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);
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render() {
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return (
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<FlatList
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data={this.props.data}
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extraData={this.state}
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keyExtractor={this._keyExtractor}
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renderItem={this._renderItem}
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/>
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);
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}
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}
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</code></pre>
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<p>This is a convenience wrapper around <a href="/react-native/docs/0.49/virtualizedlist.html"><code><VirtualizedList></code></a>, and thus inherits its props (as well as those of <code>ScrollView</code>) that aren't explicitly listed here, along with the following caveats:</p>
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<ul>
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<li>Internal state is not preserved when content scrolls out of the render window. Make sure all your data is captured in the item data or external stores like Flux, Redux, or Relay.</li>
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<li>This is a <code>PureComponent</code> which means that it will not re-render if <code>props</code> remain shallow- equal. Make sure that everything your <code>renderItem</code> function depends on is passed as a prop (e.g. <code>extraData</code>) that is not <code>===</code> after updates, otherwise your UI may not update on changes. This includes the <code>data</code> prop and parent component state.</li>
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<li>In order to constrain memory and enable smooth scrolling, content is rendered asynchronously offscreen. This means it's possible to scroll faster than the fill rate ands momentarily see blank content. This is a tradeoff that can be adjusted to suit the needs of each application, and we are working on improving it behind the scenes.</li>
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<li>By default, the list looks for a <code>key</code> prop on each item and uses that for the React key. Alternatively, you can provide a custom <code>keyExtractor</code> prop.</li>
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</ul>
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<p>Also inherets <a href="/react-native/docs/0.49/scrollview.html#props">ScrollView Props</a>, unless it is nested in another FlatList of same orientation.</p>
|
||
<h3><a class="anchor" aria-hidden="true" id="props"></a><a href="#props" 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>Props</h3>
|
||
<ul>
|
||
<li><a href="/react-native/docs/0.49/flatlist.html#numcolumns"><code>numColumns</code></a></li>
|
||
</ul>
|
||
<h3><a class="anchor" aria-hidden="true" id="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/0.49/flatlist.html#scrolltoend"><code>scrollToEnd</code></a></li>
|
||
<li><a href="/react-native/docs/0.49/flatlist.html#scrolltoindex"><code>scrollToIndex</code></a></li>
|
||
<li><a href="/react-native/docs/0.49/flatlist.html#scrolltoitem"><code>scrollToItem</code></a></li>
|
||
<li><a href="/react-native/docs/0.49/flatlist.html#scrolltooffset"><code>scrollToOffset</code></a></li>
|
||
<li><a href="/react-native/docs/0.49/flatlist.html#recordinteraction"><code>recordInteraction</code></a></li>
|
||
<li><a href="/react-native/docs/0.49/flatlist.html#flashscrollindicators"><code>flashScrollIndicators</code></a></li>
|
||
</ul>
|
||
<hr>
|
||
<h1><a class="anchor" aria-hidden="true" id="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" id="props"></a><a href="#props" 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>Props</h2>
|
||
<h3><a class="anchor" aria-hidden="true" id="numcolumns"></a><a href="#numcolumns" 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>numColumns</code></h3>
|
||
<table>
|
||
<thead>
|
||
<tr><th>Type</th><th>Required</th></tr>
|
||
</thead>
|
||
<tbody>
|
||
<tr><td></td><td>No</td></tr>
|
||
</tbody>
|
||
</table>
|
||
<h2><a class="anchor" aria-hidden="true" id="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" id="scrolltoend"></a><a href="#scrolltoend" 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>scrollToEnd()</code></h3>
|
||
<pre><code class="hljs css javascript">scrollToEnd(([params]: object));
|
||
</code></pre>
|
||
<p>Scrolls to the end of the content. May be janky without <code>getItemLayout</code> prop.</p>
|
||
<hr>
|
||
<h3><a class="anchor" aria-hidden="true" id="scrolltoindex"></a><a href="#scrolltoindex" 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>scrollToIndex()</code></h3>
|
||
<pre><code class="hljs css javascript">scrollToIndex((params: object));
|
||
</code></pre>
|
||
<p>Scrolls to the item at the specified index such that it is positioned in the viewable area such that <code>viewPosition</code> 0 places it at the top, 1 at the bottom, and 0.5 centered in the middle. <code>viewOffset</code> is a fixed number of pixels to offset the final target position.</p>
|
||
<p>Note: cannot scroll to locations outside the render window without specifying the <code>getItemLayout</code> prop.</p>
|
||
<hr>
|
||
<h3><a class="anchor" aria-hidden="true" id="scrolltoitem"></a><a href="#scrolltoitem" 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>scrollToItem()</code></h3>
|
||
<pre><code class="hljs css javascript">scrollToItem((params: object));
|
||
</code></pre>
|
||
<p>Requires linear scan through data - use <code>scrollToIndex</code> instead if possible.</p>
|
||
<p>Note: cannot scroll to locations outside the render window without specifying the <code>getItemLayout</code> prop.</p>
|
||
<hr>
|
||
<h3><a class="anchor" aria-hidden="true" id="scrolltooffset"></a><a href="#scrolltooffset" 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>scrollToOffset()</code></h3>
|
||
<pre><code class="hljs css javascript">scrollToOffset((params: object));
|
||
</code></pre>
|
||
<p>Scroll to a specific content pixel offset in the list.</p>
|
||
<p>Check out <a href="/react-native/docs/0.49/virtualizedlist.html#scrolltooffset">scrollToOffset</a> of VirtualizedList</p>
|
||
<hr>
|
||
<h3><a class="anchor" aria-hidden="true" id="recordinteraction"></a><a href="#recordinteraction" 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>recordInteraction()</code></h3>
|
||
<pre><code class="hljs css javascript">recordInteraction();
|
||
</code></pre>
|
||
<p>Tells the list an interaction has occured, which should trigger viewability calculations, e.g. if <code>waitForInteractions</code> is true and the user has not scrolled. This is typically called by taps on items or by navigation actions.</p>
|
||
<hr>
|
||
<h3><a class="anchor" aria-hidden="true" id="flashscrollindicators"></a><a href="#flashscrollindicators" 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>flashScrollIndicators()</code></h3>
|
||
<pre><code class="hljs css javascript">flashScrollIndicators();
|
||
</code></pre>
|
||
<p>Displays the scroll indicators momentarily.</p>
|
||
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