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260 lines
68 KiB
HTML
<!DOCTYPE html><html><head><title>ScrollView</title><meta charset="utf-8"><meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"><meta name="viewport" content="width=device-width"><meta property="fb:app_id" content="1677033832619985"><meta property="fb:admins" content="121800083"><meta property="og:site_name" content="React Native"><meta property="og:title" content="ScrollView"><meta property="og:url" content="https://facebook.github.io/react-native/index.html"><meta property="og:image" content="https://facebook.github.io/react-native/img/opengraph.png"><meta property="og:description" content="A framework for building native apps using React"><meta name="twitter:site" content="@reactnative"><meta name="twitter:card" content="summary_large_image"><meta property="og:type" content="website"><base href="/react-native/"><link rel="stylesheet" href="https://cdn.jsdelivr.net/docsearch.js/1/docsearch.min.css"><link rel="shortcut icon" href="img/favicon.png?2"><link rel="stylesheet" href="css/react-native.css"><link rel="alternate" type="application/rss+xml" title="React Native Blog" href="https://facebook.github.io/react-native/blog/feed.xml"><link href="//cdn-images.mailchimp.com/embedcode/horizontal-slim-10_7.css" rel="stylesheet" type="text/css"><script type="text/javascript" src="//use.typekit.net/vqa1hcx.js"></script><script type="text/javascript">try{Typekit.load();}catch(e){}</script></head><body><script>window.fbAsyncInit = function() {FB.init({appId:'1677033832619985',xfbml:true,version:'v2.7'});};(function(d, s, id){var js, fjs = d.getElementsByTagName(s)[0];if (d.getElementById(id)) {return;}js = d.createElement(s); js.id = id;js.src = '//connect.facebook.net/en_US/sdk.js';fjs.parentNode.insertBefore(js, fjs);}(document, 'script','facebook-jssdk'));</script><script>window.twttr=(function(d,s, id){var js,fjs=d.getElementsByTagName(s)[0],t=window.twttr||{};if(d.getElementById(id))return t;js=d.createElement(s);js.id=id;js.src='https://platform.twitter.com/widgets.js';fjs.parentNode.insertBefore(js, fjs);t._e = [];t.ready = function(f) {t._e.push(f);};return t;}(document, 'script', 'twitter-wjs'));</script><div class="container"><div class="nav-main"><div class="wrap"><a class="nav-home" href=""><img src="img/header_logo.png">React Native</a><a class="nav-version" href="/react-native/versions.html">0.42</a><div class="nav-site-wrapper"><ul class="nav-site nav-site-internal"><li><a href="docs/getting-started.html" class="active" data-target=".nav-docs">Docs</a></li><li><a href="/react-native/support.html" class="">Help</a></li><li><a href="/react-native/showcase.html" class="">Showcase</a></li><li><a href="/react-native/blog/" class="">Blog</a></li></ul><div class="algolia-search-wrapper"><input id="algolia-doc-search" tabindex="0" type="text" placeholder="Search docs..."></div><ul class="nav-site nav-site-external"><li><a href="https://github.com/facebook/react-native" class="">GitHub</a></li><li><a href="http://facebook.github.io/react" class="">React</a></li></ul></div></div></div><section class="content wrap documentationContent"><div class="nav-docs"><div class="nav-docs-viewport"><div class="nav-docs-section"><h3>The Basics</h3><ul><li><a style="margin-left:10px;" class="" href="docs/getting-started.html">Getting Started</a></li><li><a style="margin-left:10px;" class="" href="docs/tutorial.html">Tutorial</a></li><li><a style="margin-left:10px;" class="" href="docs/props.html">Props</a></li><li><a style="margin-left:10px;" class="" href="docs/state.html">State</a></li><li><a style="margin-left:10px;" class="" href="docs/style.html">Style</a></li><li><a style="margin-left:10px;" class="" href="docs/height-and-width.html">Height and Width</a></li><li><a style="margin-left:10px;" class="" href="docs/flexbox.html">Layout with Flexbox</a></li><li><a style="margin-left:10px;" class="" href="docs/handling-text-input.html">Handling Text Input</a></li><li><a style="margin-left:10px;" class="" href="docs/using-a-scrollview.html">Using a ScrollView</a></li><li><a style="margin-left:10px;" class="" href="docs/using-a-listview.html">Using a ListView</a></li><li><a style="margin-left:10px;" class="" href="docs/network.html">Networking</a></li><li><a style="margin-left:10px;" class="" href="docs/more-resources.html">More Resources</a></li></ul></div><div class="nav-docs-section"><h3>Guides</h3><ul><li><a style="margin-left:10px;" class="" href="docs/handling-touches.html">Handling Touches</a></li><li><a style="margin-left:10px;" class="" href="docs/animations.html">Animations</a></li><li><a style="margin-left:10px;" class="" href="docs/navigation.html">Navigation</a></li><li><a style="margin-left:10px;" class="" href="docs/images.html">Images</a></li><li><a style="margin-left:10px;" class="" href="docs/colors.html">Colors</a></li><li><a style="margin-left:10px;" class="" href="docs/platform-specific-code.html">Platform Specific Code</a></li><li><a style="margin-left:10px;" class="" href="docs/debugging.html">Debugging</a></li><li><a style="margin-left:10px;" class="" href="docs/accessibility.html">Accessibility</a></li><li><a style="margin-left:10px;" class="" href="docs/timers.html">Timers</a></li><li><a style="margin-left:10px;" class="" href="docs/javascript-environment.html">JavaScript Environment</a></li><li><a style="margin-left:10px;" class="" href="docs/direct-manipulation.html">Direct Manipulation</a></li><li><a style="margin-left:10px;" class="" href="docs/performance.html">Performance</a></li><li><a style="margin-left:10px;" class="" href="docs/gesture-responder-system.html">Gesture Responder System</a></li><li><a style="margin-left:10px;" class="" href="docs/testing.html">Testing</a></li><li><a style="margin-left:10px;" class="" href="docs/understanding-cli.html">Understanding the CLI</a></li><li><a style="margin-left:10px;" class="" href="docs/integration-with-existing-apps.html">Integration With Existing Apps</a></li><li><a style="margin-left:10px;" class="" href="docs/running-on-device.html">Running On Device</a></li><li><a style="margin-left:10px;" class="" href="docs/upgrading.html">Upgrading</a></li></ul></div><div class="nav-docs-section"><h3>Guides (iOS)</h3><ul><li><a style="margin-left:10px;" class="" href="docs/native-modules-ios.html">Native Modules</a></li><li><a style="margin-left:10px;" class="" href="docs/native-components-ios.html">Native UI Components</a></li><li><a style="margin-left:10px;" class="" href="docs/linking-libraries-ios.html">Linking Libraries</a></li><li><a style="margin-left:10px;" class="" href="docs/running-on-simulator-ios.html">Running On Simulator</a></li><li><a style="margin-left:10px;" class="" href="docs/communication-ios.html">Communication between native and React Native</a></li></ul></div><div class="nav-docs-section"><h3>Guides (Android)</h3><ul><li><a style="margin-left:10px;" class="" href="docs/native-modules-android.html">Native Modules</a></li><li><a style="margin-left:10px;" class="" href="docs/native-components-android.html">Native UI Components</a></li><li><a style="margin-left:10px;" class="" href="docs/headless-js-android.html">Headless JS</a></li><li><a style="margin-left:10px;" class="" href="docs/signed-apk-android.html">Generating Signed APK</a></li><li><a style="margin-left:10px;" class="" href="docs/android-building-from-source.html">Building React Native from source</a></li></ul></div><div class="nav-docs-section"><h3>components</h3><ul><li><a style="margin-left:10px;" class="" href="docs/activityindicator.html">ActivityIndicator</a></li><li><a style="margin-left:10px;" class="" href="docs/button.html">Button</a></li><li><a style="margin-left:10px;" class="" href="docs/datepickerios.html">DatePickerIOS</a></li><li><a style="margin-left:10px;" class="" href="docs/drawerlayoutandroid.html">DrawerLayoutAndroid</a></li><li><a style="margin-left:10px;" class="" href="docs/image.html">Image</a></li><li><a style="margin-left:10px;" class="" href="docs/keyboardavoidingview.html">KeyboardAvoidingView</a></li><li><a style="margin-left:10px;" class="" href="docs/listview.html">ListView</a></li><li><a style="margin-left:10px;" class="" href="docs/mapview.html">MapView</a></li><li><a style="margin-left:10px;" class="" href="docs/modal.html">Modal</a></li><li><a style="margin-left:10px;" class="" href="docs/navigator.html">Navigator</a></li><li><a style="margin-left:10px;" class="" href="docs/navigatorios.html">NavigatorIOS</a></li><li><a style="margin-left:10px;" class="" href="docs/picker.html">Picker</a></li><li><a style="margin-left:10px;" class="" href="docs/pickerios.html">PickerIOS</a></li><li><a style="margin-left:10px;" class="" href="docs/progressbarandroid.html">ProgressBarAndroid</a></li><li><a style="margin-left:10px;" class="" href="docs/progressviewios.html">ProgressViewIOS</a></li><li><a style="margin-left:10px;" class="" href="docs/refreshcontrol.html">RefreshControl</a></li><li><a style="margin-left:10px;" class="active" href="docs/scrollview.html">ScrollView</a></li><li><a style="margin-left:10px;" class="" href="docs/segmentedcontrolios.html">SegmentedControlIOS</a></li><li><a style="margin-left:10px;" class="" href="docs/slider.html">Slider</a></li><li><a style="margin-left:10px;" class="" href="docs/snapshotviewios.html">SnapshotViewIOS</a></li><li><a style="margin-left:10px;" class="" href="docs/statusbar.html">StatusBar</a></li><li><a style="margin-left:10px;" class="" href="docs/switch.html">Switch</a></li><li><a style="margin-left:10px;" class="" href="docs/tabbarios.html">TabBarIOS</a></li><li><a style="margin-left:10px;" class="" href="docs/tabbarios-item.html">TabBarIOS.Item</a></li><li><a style="margin-left:10px;" class="" href="docs/text.html">Text</a></li><li><a style="margin-left:10px;" class="" href="docs/textinput.html">TextInput</a></li><li><a style="margin-left:10px;" class="" href="docs/toolbarandroid.html">ToolbarAndroid</a></li><li><a style="margin-left:10px;" class="" href="docs/touchablehighlight.html">TouchableHighlight</a></li><li><a style="margin-left:10px;" class="" href="docs/touchablenativefeedback.html">TouchableNativeFeedback</a></li><li><a style="margin-left:10px;" class="" href="docs/touchableopacity.html">TouchableOpacity</a></li><li><a style="margin-left:10px;" class="" href="docs/touchablewithoutfeedback.html">TouchableWithoutFeedback</a></li><li><a style="margin-left:10px;" class="" href="docs/view.html">View</a></li><li><a style="margin-left:10px;" class="" href="docs/viewpagerandroid.html">ViewPagerAndroid</a></li><li><a style="margin-left:10px;" class="" href="docs/webview.html">WebView</a></li></ul></div><div class="nav-docs-section"><h3>APIs</h3><ul><li><a style="margin-left:10px;" class="" href="docs/actionsheetios.html">ActionSheetIOS</a></li><li><a style="margin-left:10px;" class="" href="docs/adsupportios.html">AdSupportIOS</a></li><li><a style="margin-left:10px;" class="" href="docs/alert.html">Alert</a></li><li><a style="margin-left:10px;" class="" href="docs/alertios.html">AlertIOS</a></li><li><a style="margin-left:10px;" class="" href="docs/animated.html">Animated</a></li><li><a style="margin-left:10px;" class="" href="docs/appregistry.html">AppRegistry</a></li><li><a style="margin-left:10px;" class="" href="docs/appstate.html">AppState</a></li><li><a style="margin-left:10px;" class="" href="docs/asyncstorage.html">AsyncStorage</a></li><li><a style="margin-left:10px;" class="" href="docs/backandroid.html">BackAndroid</a></li><li><a style="margin-left:10px;" class="" href="docs/cameraroll.html">CameraRoll</a></li><li><a style="margin-left:10px;" class="" href="docs/clipboard.html">Clipboard</a></li><li><a style="margin-left:10px;" class="" href="docs/datepickerandroid.html">DatePickerAndroid</a></li><li><a style="margin-left:10px;" class="" href="docs/dimensions.html">Dimensions</a></li><li><a style="margin-left:10px;" class="" href="docs/easing.html">Easing</a></li><li><a style="margin-left:10px;" class="" href="docs/geolocation.html">Geolocation</a></li><li><a style="margin-left:10px;" class="" href="docs/imageeditor.html">ImageEditor</a></li><li><a style="margin-left:10px;" class="" href="docs/imagepickerios.html">ImagePickerIOS</a></li><li><a style="margin-left:10px;" class="" href="docs/imagestore.html">ImageStore</a></li><li><a style="margin-left:10px;" class="" href="docs/interactionmanager.html">InteractionManager</a></li><li><a style="margin-left:10px;" class="" href="docs/keyboard.html">Keyboard</a></li><li><a style="margin-left:10px;" class="" href="docs/layoutanimation.html">LayoutAnimation</a></li><li><a style="margin-left:10px;" class="" href="docs/linking.html">Linking</a></li><li><a style="margin-left:10px;" class="" href="docs/nativemethodsmixin.html">NativeMethodsMixin</a></li><li><a style="margin-left:10px;" class="" href="docs/netinfo.html">NetInfo</a></li><li><a style="margin-left:10px;" class="" href="docs/panresponder.html">PanResponder</a></li><li><a style="margin-left:10px;" class="" href="docs/permissionsandroid.html">PermissionsAndroid</a></li><li><a style="margin-left:10px;" class="" href="docs/pixelratio.html">PixelRatio</a></li><li><a style="margin-left:10px;" class="" href="docs/pushnotificationios.html">PushNotificationIOS</a></li><li><a style="margin-left:10px;" class="" href="docs/settings.html">Settings</a></li><li><a style="margin-left:10px;" class="" href="docs/share.html">Share</a></li><li><a style="margin-left:10px;" class="" href="docs/statusbarios.html">StatusBarIOS</a></li><li><a style="margin-left:10px;" class="" href="docs/stylesheet.html">StyleSheet</a></li><li><a style="margin-left:10px;" class="" href="docs/systrace.html">Systrace</a></li><li><a style="margin-left:10px;" class="" href="docs/timepickerandroid.html">TimePickerAndroid</a></li><li><a style="margin-left:10px;" class="" href="docs/toastandroid.html">ToastAndroid</a></li><li><a style="margin-left:10px;" class="" href="docs/vibration.html">Vibration</a></li><li><a style="margin-left:10px;" class="" href="docs/vibrationios.html">VibrationIOS</a></li><li><a style="margin-left:10px;" class="" href="docs/layout-props.html">Layout Props</a></li><li><a style="margin-left:10px;" class="" href="docs/shadow-props.html">Shadow Props</a></li></ul></div></div></div><div class="inner-content"><a id="content"></a><h1><a class="anchor" name="scrollview"></a>ScrollView <a class="hash-link" href="docs/scrollview.html#scrollview">#</a></h1><div><div><p>Component that wraps platform ScrollView while providing
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integration with touch locking "responder" system.</p><p>Keep in mind that ScrollViews must have a bounded height in order to work,
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since they contain unbounded-height children into a bounded container (via
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a scroll interaction). In order to bound the height of a ScrollView, either
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set the height of the view directly (discouraged) or make sure all parent
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views have bounded height. Forgetting to transfer <code>{flex: 1}</code> down the
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view stack can lead to errors here, which the element inspector makes
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easy to debug.</p><p>Doesn't yet support other contained responders from blocking this scroll
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view from becoming the responder.</p><p><code><ScrollView></code> vs <code><ListView></code> - which one to use?
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ScrollView simply renders all its react child components at once. That
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makes it very easy to understand and use.
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On the other hand, this has a performance downside. Imagine you have a very
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long list of items you want to display, worth of couple of your ScrollView’s
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heights. Creating JS components and native views upfront for all its items,
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which may not even be shown, will contribute to slow rendering of your
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screen and increased memory usage.</p><p>This is where ListView comes into play. ListView renders items lazily,
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just when they are about to appear. This laziness comes at cost of a more
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complicated API, which is worth it unless you are rendering a small fixed
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set of items.</p></div><h3><a class="anchor" name="props"></a>Props <a class="hash-link" href="docs/scrollview.html#props">#</a></h3><div class="props"><div class="prop"><h4 class="propTitle"><a class="anchor" name="view"></a><a href="docs/view.html#props">View props...</a> <a class="hash-link" href="docs/scrollview.html#view">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="contentcontainerstyle"></a>contentContainerStyle?: <span class="propType">StyleSheetPropType(ViewStylePropTypes)</span> <a class="hash-link" href="docs/scrollview.html#contentcontainerstyle">#</a></h4><div><p>These styles will be applied to the scroll view content container which
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wraps all of the child views. Example:</p><p> return (
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<ScrollView contentContainerStyle={styles.contentContainer}>
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</ScrollView>
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);
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...
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const styles = StyleSheet.create({
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contentContainer: {
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paddingVertical: 20
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}
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});</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="horizontal"></a>horizontal?: <span class="propType">bool</span> <a class="hash-link" href="docs/scrollview.html#horizontal">#</a></h4><div><p>When true, the scroll view's children are arranged horizontally in a row
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instead of vertically in a column. The default value is false.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="keyboarddismissmode"></a>keyboardDismissMode?: <span class="propType">enum('none', 'interactive', 'on-drag')</span> <a class="hash-link" href="docs/scrollview.html#keyboarddismissmode">#</a></h4><div><p>Determines whether the keyboard gets dismissed in response to a drag.
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- 'none' (the default), drags do not dismiss the keyboard.
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- 'on-drag', the keyboard is dismissed when a drag begins.
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- 'interactive', the keyboard is dismissed interactively with the drag and moves in
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synchrony with the touch; dragging upwards cancels the dismissal.
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On android this is not supported and it will have the same behavior as 'none'.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="keyboardshouldpersisttaps"></a>keyboardShouldPersistTaps?: <span class="propType">enum('always', 'never', 'handled', false, true)</span> <a class="hash-link" href="docs/scrollview.html#keyboardshouldpersisttaps">#</a></h4><div><p>Determines when the keyboard should stay visible after a tap.</p><ul><li>'never' (the default), tapping outside of the focused text input when the keyboard
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is up dismisses the keyboard. When this happens, children won't receive the tap.</li><li>'always', the keyboard will not dismiss automatically, and the scroll view will not
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catch taps, but children of the scroll view can catch taps.</li><li>'handled', the keyboard will not dismiss automatically when the tap was handled by
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a children, (or captured by an ancestor).</li><li>false, deprecated, use 'never' instead</li><li>true, deprecated, use 'always' instead</li></ul></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="oncontentsizechange"></a>onContentSizeChange?: <span class="propType">function</span> <a class="hash-link" href="docs/scrollview.html#oncontentsizechange">#</a></h4><div><p>Called when scrollable content view of the ScrollView changes.</p><p>Handler function is passed the content width and content height as parameters: <code>(contentWidth, contentHeight)</code></p><p>It's implemented using onLayout handler attached to the content container
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which this ScrollView renders.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="onscroll"></a>onScroll?: <span class="propType">function</span> <a class="hash-link" href="docs/scrollview.html#onscroll">#</a></h4><div><p>Fires at most once per frame during scrolling. The frequency of the
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events can be controlled using the <code>scrollEventThrottle</code> prop.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="pagingenabled"></a>pagingEnabled?: <span class="propType">bool</span> <a class="hash-link" href="docs/scrollview.html#pagingenabled">#</a></h4><div><p>When true, the scroll view stops on multiples of the scroll view's size
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when scrolling. This can be used for horizontal pagination. The default
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value is false.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="refreshcontrol"></a>refreshControl?: <span class="propType">element</span> <a class="hash-link" href="docs/scrollview.html#refreshcontrol">#</a></h4><div><p>A RefreshControl component, used to provide pull-to-refresh
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functionality for the ScrollView.</p><p>See <a href="docs/refreshcontrol.html" target="_blank">RefreshControl</a>.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="removeclippedsubviews"></a>removeClippedSubviews?: <span class="propType">bool</span> <a class="hash-link" href="docs/scrollview.html#removeclippedsubviews">#</a></h4><div><p>Experimental: When true, offscreen child views (whose <code>overflow</code> value is
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<code>hidden</code>) are removed from their native backing superview when offscreen.
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This can improve scrolling performance on long lists. The default value is
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true.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="scrollenabled"></a>scrollEnabled?: <span class="propType">bool</span> <a class="hash-link" href="docs/scrollview.html#scrollenabled">#</a></h4><div><p>When false, the content does not scroll.
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The default value is true.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="showshorizontalscrollindicator"></a>showsHorizontalScrollIndicator?: <span class="propType">bool</span> <a class="hash-link" href="docs/scrollview.html#showshorizontalscrollindicator">#</a></h4><div><p>When true, shows a horizontal scroll indicator.
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The default value is true.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="showsverticalscrollindicator"></a>showsVerticalScrollIndicator?: <span class="propType">bool</span> <a class="hash-link" href="docs/scrollview.html#showsverticalscrollindicator">#</a></h4><div><p>When true, shows a vertical scroll indicator.
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The default value is true.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="style"></a>style?: <span class="propType">style</span> <a class="hash-link" href="docs/scrollview.html#style">#</a></h4><div class="compactProps"><div class="prop"><h6 class="propTitle"><a href="docs/layout-props.html#props">Layout Props...</a></h6></div><div class="prop"><h6 class="propTitle"><a href="docs/shadow-props.html#props">Shadow Props...</a></h6></div><div class="prop"><h6 class="propTitle"><a href="docs/transforms.html#props">Transforms...</a></h6></div><div class="prop"><h6 class="propTitle">backfaceVisibility <span class="propType">enum('visible', 'hidden')</span> </h6></div><div class="prop"><h6 class="propTitle">backgroundColor <span class="propType"><a href="docs/colors.html">color</a></span> </h6></div><div class="prop"><h6 class="propTitle">borderBottomColor <span class="propType"><a href="docs/colors.html">color</a></span> </h6></div><div class="prop"><h6 class="propTitle">borderBottomLeftRadius <span class="propType">number</span> </h6></div><div class="prop"><h6 class="propTitle">borderBottomRightRadius <span class="propType">number</span> </h6></div><div class="prop"><h6 class="propTitle">borderBottomWidth <span class="propType">number</span> </h6></div><div class="prop"><h6 class="propTitle">borderColor <span class="propType"><a href="docs/colors.html">color</a></span> </h6></div><div class="prop"><h6 class="propTitle">borderLeftColor <span class="propType"><a href="docs/colors.html">color</a></span> </h6></div><div class="prop"><h6 class="propTitle">borderLeftWidth <span class="propType">number</span> </h6></div><div class="prop"><h6 class="propTitle">borderRadius <span class="propType">number</span> </h6></div><div class="prop"><h6 class="propTitle">borderRightColor <span class="propType"><a href="docs/colors.html">color</a></span> </h6></div><div class="prop"><h6 class="propTitle">borderRightWidth <span class="propType">number</span> </h6></div><div class="prop"><h6 class="propTitle">borderStyle <span class="propType">enum('solid', 'dotted', 'dashed')</span> </h6></div><div class="prop"><h6 class="propTitle">borderTopColor <span class="propType"><a href="docs/colors.html">color</a></span> </h6></div><div class="prop"><h6 class="propTitle">borderTopLeftRadius <span class="propType">number</span> </h6></div><div class="prop"><h6 class="propTitle">borderTopRightRadius <span class="propType">number</span> </h6></div><div class="prop"><h6 class="propTitle">borderTopWidth <span class="propType">number</span> </h6></div><div class="prop"><h6 class="propTitle">borderWidth <span class="propType">number</span> </h6></div><div class="prop"><h6 class="propTitle">opacity <span class="propType">number</span> </h6></div><div class="prop"><h6 class="propTitle"><span class="platform">android</span>elevation <span class="propType">number</span> <div><p>(Android-only) Sets the elevation of a view, using Android's underlying
|
||
<a href="https://developer.android.com/training/material/shadows-clipping.html#Elevation" target="_blank">elevation API</a>.
|
||
This adds a drop shadow to the item and affects z-order for overlapping views.
|
||
Only supported on Android 5.0+, has no effect on earlier versions.</p></div></h6></div></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="endfillcolor"></a><span class="platform">android</span>endFillColor?: <span class="propType"><a href="docs/colors.html">color</a></span> <a class="hash-link" href="docs/scrollview.html#endfillcolor">#</a></h4><div><p>Sometimes a scrollview takes up more space than its content fills. When this is
|
||
the case, this prop will fill the rest of the scrollview with a color to avoid setting
|
||
a background and creating unnecessary overdraw. This is an advanced optimization
|
||
that is not needed in the general case.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="overscrollmode"></a><span class="platform">android</span>overScrollMode?: <span class="propType">enum('auto', 'always', 'never')</span> <a class="hash-link" href="docs/scrollview.html#overscrollmode">#</a></h4><div><p>Used to override default value of overScroll mode.</p><p>Possible values:</p><ul><li><code>'auto'</code> - Default value, allow a user to over-scroll
|
||
this view only if the content is large enough to meaningfully scroll.</li><li><code>'always'</code> - Always allow a user to over-scroll this view.</li><li><code>'never'</code> - Never allow a user to over-scroll this view.</li></ul></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="scrollperftag"></a><span class="platform">android</span>scrollPerfTag?: <span class="propType">string</span> <a class="hash-link" href="docs/scrollview.html#scrollperftag">#</a></h4><div><p>Tag used to log scroll performance on this scroll view. Will force
|
||
momentum events to be turned on (see sendMomentumEvents). This doesn't do
|
||
anything out of the box and you need to implement a custom native
|
||
FpsListener for it to be useful.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="alwaysbouncehorizontal"></a><span class="platform">ios</span>alwaysBounceHorizontal?: <span class="propType">bool</span> <a class="hash-link" href="docs/scrollview.html#alwaysbouncehorizontal">#</a></h4><div><p>When true, the scroll view bounces horizontally when it reaches the end
|
||
even if the content is smaller than the scroll view itself. The default
|
||
value is true when <code>horizontal={true}</code> and false otherwise.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="alwaysbouncevertical"></a><span class="platform">ios</span>alwaysBounceVertical?: <span class="propType">bool</span> <a class="hash-link" href="docs/scrollview.html#alwaysbouncevertical">#</a></h4><div><p>When true, the scroll view bounces vertically when it reaches the end
|
||
even if the content is smaller than the scroll view itself. The default
|
||
value is false when <code>horizontal={true}</code> and true otherwise.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="automaticallyadjustcontentinsets"></a><span class="platform">ios</span>automaticallyAdjustContentInsets?: <span class="propType">bool</span> <a class="hash-link" href="docs/scrollview.html#automaticallyadjustcontentinsets">#</a></h4><div><p>Controls whether iOS should automatically adjust the content inset
|
||
for scroll views that are placed behind a navigation bar or
|
||
tab bar/ toolbar. The default value is true.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="bounces"></a><span class="platform">ios</span>bounces?: <span class="propType">bool</span> <a class="hash-link" href="docs/scrollview.html#bounces">#</a></h4><div><p>When true, the scroll view bounces when it reaches the end of the
|
||
content if the content is larger then the scroll view along the axis of
|
||
the scroll direction. When false, it disables all bouncing even if
|
||
the <code>alwaysBounce*</code> props are true. The default value is true.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="bounceszoom"></a><span class="platform">ios</span>bouncesZoom?: <span class="propType">bool</span> <a class="hash-link" href="docs/scrollview.html#bounceszoom">#</a></h4><div><p>When true, gestures can drive zoom past min/max and the zoom will animate
|
||
to the min/max value at gesture end, otherwise the zoom will not exceed
|
||
the limits.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="cancancelcontenttouches"></a><span class="platform">ios</span>canCancelContentTouches?: <span class="propType">bool</span> <a class="hash-link" href="docs/scrollview.html#cancancelcontenttouches">#</a></h4><div><p>When false, once tracking starts, won't try to drag if the touch moves.
|
||
The default value is true.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="centercontent"></a><span class="platform">ios</span>centerContent?: <span class="propType">bool</span> <a class="hash-link" href="docs/scrollview.html#centercontent">#</a></h4><div><p>When true, the scroll view automatically centers the content when the
|
||
content is smaller than the scroll view bounds; when the content is
|
||
larger than the scroll view, this property has no effect. The default
|
||
value is false.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="contentinset"></a><span class="platform">ios</span>contentInset?: <span class="propType">{top: number, left: number, bottom: number, right: number}</span> <a class="hash-link" href="docs/scrollview.html#contentinset">#</a></h4><div><p>The amount by which the scroll view content is inset from the edges
|
||
of the scroll view. Defaults to <code>{top: 0, left: 0, bottom: 0, right: 0}</code>.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="contentoffset"></a><span class="platform">ios</span>contentOffset?: <span class="propType">PointPropType</span> <a class="hash-link" href="docs/scrollview.html#contentoffset">#</a></h4><div><p>Used to manually set the starting scroll offset.
|
||
The default value is <code>{x: 0, y: 0}</code>.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="decelerationrate"></a><span class="platform">ios</span>decelerationRate?: <span class="propType"><span><span>enum('fast', 'normal'), </span>number</span></span> <a class="hash-link" href="docs/scrollview.html#decelerationrate">#</a></h4><div><p>A floating-point number that determines how quickly the scroll view
|
||
decelerates after the user lifts their finger. You may also use string
|
||
shortcuts <code>"normal"</code> and <code>"fast"</code> which match the underlying iOS settings
|
||
for <code>UIScrollViewDecelerationRateNormal</code> and
|
||
<code>UIScrollViewDecelerationRateFast</code> respectively.
|
||
- normal: 0.998 (the default)
|
||
- fast: 0.99</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="directionallockenabled"></a><span class="platform">ios</span>directionalLockEnabled?: <span class="propType">bool</span> <a class="hash-link" href="docs/scrollview.html#directionallockenabled">#</a></h4><div><p>When true, the ScrollView will try to lock to only vertical or horizontal
|
||
scrolling while dragging. The default value is false.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="indicatorstyle"></a><span class="platform">ios</span>indicatorStyle?: <span class="propType">enum('default', 'black', 'white')</span> <a class="hash-link" href="docs/scrollview.html#indicatorstyle">#</a></h4><div><p>The style of the scroll indicators.
|
||
- <code>default</code> (the default), same as <code>black</code>.
|
||
- <code>black</code>, scroll indicator is black. This style is good against a white content background.
|
||
- <code>white</code>, scroll indicator is white. This style is good against a black content background.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="maximumzoomscale"></a><span class="platform">ios</span>maximumZoomScale?: <span class="propType">number</span> <a class="hash-link" href="docs/scrollview.html#maximumzoomscale">#</a></h4><div><p>The maximum allowed zoom scale. The default value is 1.0.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="minimumzoomscale"></a><span class="platform">ios</span>minimumZoomScale?: <span class="propType">number</span> <a class="hash-link" href="docs/scrollview.html#minimumzoomscale">#</a></h4><div><p>The minimum allowed zoom scale. The default value is 1.0.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="onscrollanimationend"></a><span class="platform">ios</span>onScrollAnimationEnd?: <span class="propType">function</span> <a class="hash-link" href="docs/scrollview.html#onscrollanimationend">#</a></h4><div><p>Called when a scrolling animation ends.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="scrolleventthrottle"></a><span class="platform">ios</span>scrollEventThrottle?: <span class="propType">number</span> <a class="hash-link" href="docs/scrollview.html#scrolleventthrottle">#</a></h4><div><p>This controls how often the scroll event will be fired while scrolling
|
||
(as a time interval in ms). A lower number yields better accuracy for code
|
||
that is tracking the scroll position, but can lead to scroll performance
|
||
problems due to the volume of information being send over the bridge.
|
||
You will not notice a difference between values set between 1-16 as the
|
||
JS run loop is synced to the screen refresh rate. If you do not need precise
|
||
scroll position tracking, set this value higher to limit the information
|
||
being sent across the bridge. The default value is zero, which results in
|
||
the scroll event being sent only once each time the view is scrolled.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="scrollindicatorinsets"></a><span class="platform">ios</span>scrollIndicatorInsets?: <span class="propType">{top: number, left: number, bottom: number, right: number}</span> <a class="hash-link" href="docs/scrollview.html#scrollindicatorinsets">#</a></h4><div><p>The amount by which the scroll view indicators are inset from the edges
|
||
of the scroll view. This should normally be set to the same value as
|
||
the <code>contentInset</code>. Defaults to <code>{0, 0, 0, 0}</code>.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="scrollstotop"></a><span class="platform">ios</span>scrollsToTop?: <span class="propType">bool</span> <a class="hash-link" href="docs/scrollview.html#scrollstotop">#</a></h4><div><p>When true, the scroll view scrolls to top when the status bar is tapped.
|
||
The default value is true.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="snaptoalignment"></a><span class="platform">ios</span>snapToAlignment?: <span class="propType">enum('start', 'center', 'end')</span> <a class="hash-link" href="docs/scrollview.html#snaptoalignment">#</a></h4><div><p>When <code>snapToInterval</code> is set, <code>snapToAlignment</code> will define the relationship
|
||
of the snapping to the scroll view.
|
||
- <code>start</code> (the default) will align the snap at the left (horizontal) or top (vertical)
|
||
- <code>center</code> will align the snap in the center
|
||
- <code>end</code> will align the snap at the right (horizontal) or bottom (vertical)</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="snaptointerval"></a><span class="platform">ios</span>snapToInterval?: <span class="propType">number</span> <a class="hash-link" href="docs/scrollview.html#snaptointerval">#</a></h4><div><p>When set, causes the scroll view to stop at multiples of the value of
|
||
<code>snapToInterval</code>. This can be used for paginating through children
|
||
that have lengths smaller than the scroll view. Used in combination
|
||
with <code>snapToAlignment</code>.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="stickyheaderindices"></a><span class="platform">ios</span>stickyHeaderIndices?: <span class="propType"><span>[number]</span></span> <a class="hash-link" href="docs/scrollview.html#stickyheaderindices">#</a></h4><div><p>An array of child indices determining which children get docked to the
|
||
top of the screen when scrolling. For example, passing
|
||
<code>stickyHeaderIndices={[0]}</code> will cause the first child to be fixed to the
|
||
top of the scroll view. This property is not supported in conjunction
|
||
with <code>horizontal={true}</code>.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="zoomscale"></a><span class="platform">ios</span>zoomScale?: <span class="propType">number</span> <a class="hash-link" href="docs/scrollview.html#zoomscale">#</a></h4><div><p>The current scale of the scroll view content. The default value is 1.0.</p></div></div></div><span><h3><a class="anchor" name="methods"></a>Methods <a class="hash-link" href="docs/scrollview.html#methods">#</a></h3><div class="props"><div class="prop"><h4 class="methodTitle"><a class="anchor" name="scrollto"></a>scrollTo<span class="methodType">(y?: number, object, x?: number, animated?: boolean)</span> <a class="hash-link" href="docs/scrollview.html#scrollto">#</a></h4><div><p>Scrolls to a given x, y offset, either immediately or with a smooth animation.</p><p>Example:</p><p><code>scrollTo({x: 0; y: 0; animated: true})</code></p><p>Note: The weird function signature is due to the fact that, for historical reasons,
|
||
the function also accepts separate arguments as as alternative to the options object.
|
||
This is deprecated due to ambiguity (y before x), and SHOULD NOT BE USED.</p></div></div><div class="prop"><h4 class="methodTitle"><a class="anchor" name="scrolltoend"></a>scrollToEnd<span class="methodType">(options?: object)</span> <a class="hash-link" href="docs/scrollview.html#scrolltoend">#</a></h4><div><p>If this is a vertical ScrollView scrolls to the bottom.
|
||
If this is a horizontal ScrollView scrolls to the right.</p><p>Use <code>scrollToEnd({animated: true})</code> for smooth animated scrolling,
|
||
<code>scrollToEnd({animated: false})</code> for immediate scrolling.
|
||
If no options are passed, <code>animated</code> defaults to true.</p></div></div><div class="prop"><h4 class="methodTitle"><a class="anchor" name="scrollwithoutanimationto"></a>scrollWithoutAnimationTo<span class="methodType">(y, x)</span> <a class="hash-link" href="docs/scrollview.html#scrollwithoutanimationto">#</a></h4><div><p>Deprecated, use <code>scrollTo</code> instead.</p></div></div></div></span></div><p class="edit-page-block">You can <a target="_blank" href="https://github.com/facebook/react-native/blob/master/Libraries/Components/ScrollView/ScrollView.js">edit the content above on GitHub</a> and send us a pull request!</p><div><div><table width="100%"><tbody><tr><td><h3><a class="anchor" name="examples"></a>Examples <a class="hash-link" href="docs/scrollview.html#examples">#</a></h3></td><td style="text-align:right;"><a target="_blank" href="https://github.com/facebook/react-native/blob/master/Examples/UIExplorer/js/ScrollViewExample.js">Edit on GitHub</a></td></tr></tbody></table><div class="example-container"><div class="prism language-javascript"><span class="token string">'use strict'</span><span class="token punctuation">;</span>
|
||
|
||
<span class="token keyword">var</span> React <span class="token operator">=</span> <span class="token function">require<span class="token punctuation">(</span></span><span class="token string">'react'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||
<span class="token keyword">var</span> ReactNative <span class="token operator">=</span> <span class="token function">require<span class="token punctuation">(</span></span><span class="token string">'react-native'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||
<span class="token keyword">var</span> <span class="token punctuation">{</span>
|
||
ScrollView<span class="token punctuation">,</span>
|
||
StyleSheet<span class="token punctuation">,</span>
|
||
Text<span class="token punctuation">,</span>
|
||
TouchableOpacity<span class="token punctuation">,</span>
|
||
View<span class="token punctuation">,</span>
|
||
Image
|
||
<span class="token punctuation">}</span> <span class="token operator">=</span> ReactNative<span class="token punctuation">;</span>
|
||
|
||
exports<span class="token punctuation">.</span>displayName <span class="token operator">=</span> <span class="token punctuation">(</span>undefined<span class="token punctuation">:</span> <span class="token operator">?</span>string<span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||
exports<span class="token punctuation">.</span>title <span class="token operator">=</span> <span class="token string">'<ScrollView>'</span><span class="token punctuation">;</span>
|
||
exports<span class="token punctuation">.</span>description <span class="token operator">=</span> <span class="token string">'Component that enables scrolling through child components'</span><span class="token punctuation">;</span>
|
||
exports<span class="token punctuation">.</span>examples <span class="token operator">=</span> <span class="token punctuation">[</span>
|
||
<span class="token punctuation">{</span>
|
||
title<span class="token punctuation">:</span> <span class="token string">'<ScrollView>'</span><span class="token punctuation">,</span>
|
||
description<span class="token punctuation">:</span> <span class="token string">'To make content scrollable, wrap it within a <ScrollView> component'</span><span class="token punctuation">,</span>
|
||
render<span class="token punctuation">:</span> <span class="token keyword">function</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
|
||
<span class="token keyword">var</span> _scrollView<span class="token punctuation">:</span> ScrollView<span class="token punctuation">;</span>
|
||
<span class="token keyword">return</span> <span class="token punctuation">(</span>
|
||
<View<span class="token operator">></span>
|
||
<ScrollView
|
||
ref<span class="token operator">=</span><span class="token punctuation">{</span><span class="token punctuation">(</span>scrollView<span class="token punctuation">)</span> <span class="token operator">=</span><span class="token operator">></span> <span class="token punctuation">{</span> _scrollView <span class="token operator">=</span> scrollView<span class="token punctuation">;</span> <span class="token punctuation">}</span><span class="token punctuation">}</span>
|
||
automaticallyAdjustContentInsets<span class="token operator">=</span><span class="token punctuation">{</span><span class="token boolean">false</span><span class="token punctuation">}</span>
|
||
onScroll<span class="token operator">=</span><span class="token punctuation">{</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">=</span><span class="token operator">></span> <span class="token punctuation">{</span> console<span class="token punctuation">.</span><span class="token function">log<span class="token punctuation">(</span></span><span class="token string">'onScroll!'</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token punctuation">}</span><span class="token punctuation">}</span>
|
||
scrollEventThrottle<span class="token operator">=</span><span class="token punctuation">{</span><span class="token number">200</span><span class="token punctuation">}</span>
|
||
style<span class="token operator">=</span><span class="token punctuation">{</span>styles<span class="token punctuation">.</span>scrollView<span class="token punctuation">}</span><span class="token operator">></span>
|
||
<span class="token punctuation">{</span>THUMBS<span class="token punctuation">.</span><span class="token function">map<span class="token punctuation">(</span></span>createThumbRow<span class="token punctuation">)</span><span class="token punctuation">}</span>
|
||
<<span class="token operator">/</span>ScrollView<span class="token operator">></span>
|
||
<TouchableOpacity
|
||
style<span class="token operator">=</span><span class="token punctuation">{</span>styles<span class="token punctuation">.</span>button<span class="token punctuation">}</span>
|
||
onPress<span class="token operator">=</span><span class="token punctuation">{</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">=</span><span class="token operator">></span> <span class="token punctuation">{</span> _scrollView<span class="token punctuation">.</span><span class="token function">scrollTo<span class="token punctuation">(</span></span><span class="token punctuation">{</span>y<span class="token punctuation">:</span> <span class="token number">0</span><span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token punctuation">}</span><span class="token punctuation">}</span><span class="token operator">></span>
|
||
<Text<span class="token operator">></span>Scroll to top<<span class="token operator">/</span>Text<span class="token operator">></span>
|
||
<<span class="token operator">/</span>TouchableOpacity<span class="token operator">></span>
|
||
<TouchableOpacity
|
||
style<span class="token operator">=</span><span class="token punctuation">{</span>styles<span class="token punctuation">.</span>button<span class="token punctuation">}</span>
|
||
onPress<span class="token operator">=</span><span class="token punctuation">{</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">=</span><span class="token operator">></span> <span class="token punctuation">{</span> _scrollView<span class="token punctuation">.</span><span class="token function">scrollToEnd<span class="token punctuation">(</span></span><span class="token punctuation">{</span>animated<span class="token punctuation">:</span> <span class="token boolean">true</span><span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token punctuation">}</span><span class="token punctuation">}</span><span class="token operator">></span>
|
||
<Text<span class="token operator">></span>Scroll to bottom<<span class="token operator">/</span>Text<span class="token operator">></span>
|
||
<<span class="token operator">/</span>TouchableOpacity<span class="token operator">></span>
|
||
<<span class="token operator">/</span>View<span class="token operator">></span>
|
||
<span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||
<span class="token punctuation">}</span>
|
||
<span class="token punctuation">}</span><span class="token punctuation">,</span> <span class="token punctuation">{</span>
|
||
title<span class="token punctuation">:</span> <span class="token string">'<ScrollView> (horizontal = true)'</span><span class="token punctuation">,</span>
|
||
description<span class="token punctuation">:</span> <span class="token string">'You can display <ScrollView>\'s child components horizontally rather than vertically'</span><span class="token punctuation">,</span>
|
||
render<span class="token punctuation">:</span> <span class="token keyword">function</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
|
||
<span class="token keyword">var</span> _scrollView<span class="token punctuation">:</span> ScrollView<span class="token punctuation">;</span>
|
||
<span class="token keyword">return</span> <span class="token punctuation">(</span>
|
||
<View<span class="token operator">></span>
|
||
<ScrollView
|
||
ref<span class="token operator">=</span><span class="token punctuation">{</span><span class="token punctuation">(</span>scrollView<span class="token punctuation">)</span> <span class="token operator">=</span><span class="token operator">></span> <span class="token punctuation">{</span> _scrollView <span class="token operator">=</span> scrollView<span class="token punctuation">;</span> <span class="token punctuation">}</span><span class="token punctuation">}</span>
|
||
automaticallyAdjustContentInsets<span class="token operator">=</span><span class="token punctuation">{</span><span class="token boolean">false</span><span class="token punctuation">}</span>
|
||
horizontal<span class="token operator">=</span><span class="token punctuation">{</span><span class="token boolean">true</span><span class="token punctuation">}</span>
|
||
style<span class="token operator">=</span><span class="token punctuation">{</span><span class="token punctuation">[</span>styles<span class="token punctuation">.</span>scrollView<span class="token punctuation">,</span> styles<span class="token punctuation">.</span>horizontalScrollView<span class="token punctuation">]</span><span class="token punctuation">}</span><span class="token operator">></span>
|
||
<span class="token punctuation">{</span>THUMBS<span class="token punctuation">.</span><span class="token function">map<span class="token punctuation">(</span></span>createThumbRow<span class="token punctuation">)</span><span class="token punctuation">}</span>
|
||
<<span class="token operator">/</span>ScrollView<span class="token operator">></span>
|
||
<TouchableOpacity
|
||
style<span class="token operator">=</span><span class="token punctuation">{</span>styles<span class="token punctuation">.</span>button<span class="token punctuation">}</span>
|
||
onPress<span class="token operator">=</span><span class="token punctuation">{</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">=</span><span class="token operator">></span> <span class="token punctuation">{</span> _scrollView<span class="token punctuation">.</span><span class="token function">scrollTo<span class="token punctuation">(</span></span><span class="token punctuation">{</span>x<span class="token punctuation">:</span> <span class="token number">0</span><span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token punctuation">}</span><span class="token punctuation">}</span><span class="token operator">></span>
|
||
<Text<span class="token operator">></span>Scroll to start<<span class="token operator">/</span>Text<span class="token operator">></span>
|
||
<<span class="token operator">/</span>TouchableOpacity<span class="token operator">></span>
|
||
<TouchableOpacity
|
||
style<span class="token operator">=</span><span class="token punctuation">{</span>styles<span class="token punctuation">.</span>button<span class="token punctuation">}</span>
|
||
onPress<span class="token operator">=</span><span class="token punctuation">{</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">=</span><span class="token operator">></span> <span class="token punctuation">{</span> _scrollView<span class="token punctuation">.</span><span class="token function">scrollToEnd<span class="token punctuation">(</span></span><span class="token punctuation">{</span>animated<span class="token punctuation">:</span> <span class="token boolean">true</span><span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token punctuation">}</span><span class="token punctuation">}</span><span class="token operator">></span>
|
||
<Text<span class="token operator">></span>Scroll to end<<span class="token operator">/</span>Text<span class="token operator">></span>
|
||
<<span class="token operator">/</span>TouchableOpacity<span class="token operator">></span>
|
||
<<span class="token operator">/</span>View<span class="token operator">></span>
|
||
<span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||
<span class="token punctuation">}</span>
|
||
<span class="token punctuation">}</span><span class="token punctuation">]</span><span class="token punctuation">;</span>
|
||
|
||
class <span class="token class-name">Thumb</span> extends <span class="token class-name">React<span class="token punctuation">.</span>Component</span> <span class="token punctuation">{</span>
|
||
<span class="token function">shouldComponentUpdate<span class="token punctuation">(</span></span>nextProps<span class="token punctuation">,</span> nextState<span class="token punctuation">)</span> <span class="token punctuation">{</span>
|
||
<span class="token keyword">return</span> <span class="token boolean">false</span><span class="token punctuation">;</span>
|
||
<span class="token punctuation">}</span>
|
||
|
||
<span class="token function">render<span class="token punctuation">(</span></span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
|
||
<span class="token keyword">return</span> <span class="token punctuation">(</span>
|
||
<View style<span class="token operator">=</span><span class="token punctuation">{</span>styles<span class="token punctuation">.</span>button<span class="token punctuation">}</span><span class="token operator">></span>
|
||
<Image style<span class="token operator">=</span><span class="token punctuation">{</span>styles<span class="token punctuation">.</span>img<span class="token punctuation">}</span> source<span class="token operator">=</span><span class="token punctuation">{</span><span class="token punctuation">{</span>uri<span class="token punctuation">:</span><span class="token keyword">this</span><span class="token punctuation">.</span>props<span class="token punctuation">.</span>uri<span class="token punctuation">}</span><span class="token punctuation">}</span> <span class="token operator">/</span><span class="token operator">></span>
|
||
<<span class="token operator">/</span>View<span class="token operator">></span>
|
||
<span class="token punctuation">)</span><span class="token punctuation">;</span>
|
||
<span class="token punctuation">}</span>
|
||
<span class="token punctuation">}</span>
|
||
|
||
<span class="token keyword">var</span> THUMBS <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token string">'https://fbcdn-dragon-a.akamaihd.net/hphotos-ak-ash3/t39.1997/p128x128/851549_767334479959628_274486868_n.png'</span><span class="token punctuation">,</span> <span class="token string">'https://fbcdn-dragon-a.akamaihd.net/hphotos-ak-prn1/t39.1997/p128x128/851561_767334496626293_1958532586_n.png'</span><span class="token punctuation">,</span> <span class="token string">'https://fbcdn-dragon-a.akamaihd.net/hphotos-ak-ash3/t39.1997/p128x128/851579_767334503292959_179092627_n.png'</span><span class="token punctuation">,</span> <span class="token string">'https://fbcdn-dragon-a.akamaihd.net/hphotos-ak-prn1/t39.1997/p128x128/851589_767334513292958_1747022277_n.png'</span><span class="token punctuation">,</span> <span class="token string">'https://fbcdn-dragon-a.akamaihd.net/hphotos-ak-prn1/t39.1997/p128x128/851563_767334559959620_1193692107_n.png'</span><span class="token punctuation">,</span> <span class="token string">'https://fbcdn-dragon-a.akamaihd.net/hphotos-ak-prn1/t39.1997/p128x128/851593_767334566626286_1953955109_n.png'</span><span class="token punctuation">,</span> <span class="token string">'https://fbcdn-dragon-a.akamaihd.net/hphotos-ak-prn1/t39.1997/p128x128/851591_767334523292957_797560749_n.png'</span><span class="token punctuation">,</span> <span class="token string">'https://fbcdn-dragon-a.akamaihd.net/hphotos-ak-prn1/t39.1997/p128x128/851567_767334529959623_843148472_n.png'</span><span class="token punctuation">,</span> <span class="token string">'https://fbcdn-dragon-a.akamaihd.net/hphotos-ak-prn1/t39.1997/p128x128/851548_767334489959627_794462220_n.png'</span><span class="token punctuation">,</span> <span class="token string">'https://fbcdn-dragon-a.akamaihd.net/hphotos-ak-prn1/t39.1997/p128x128/851575_767334539959622_441598241_n.png'</span><span class="token punctuation">,</span> <span class="token string">'https://fbcdn-dragon-a.akamaihd.net/hphotos-ak-ash3/t39.1997/p128x128/851573_767334549959621_534583464_n.png'</span><span class="token punctuation">,</span> <span class="token string">'https://fbcdn-dragon-a.akamaihd.net/hphotos-ak-prn1/t39.1997/p128x128/851583_767334573292952_1519550680_n.png'</span><span class="token punctuation">]</span><span class="token punctuation">;</span>
|
||
THUMBS <span class="token operator">=</span> THUMBS<span class="token punctuation">.</span><span class="token function">concat<span class="token punctuation">(</span></span>THUMBS<span class="token punctuation">)</span><span class="token punctuation">;</span><span class="token comment" spellcheck="true"> // double length of THUMBS
|
||
</span><span class="token keyword">var</span> createThumbRow <span class="token operator">=</span> <span class="token punctuation">(</span>uri<span class="token punctuation">,</span> i<span class="token punctuation">)</span> <span class="token operator">=</span><span class="token operator">></span> <Thumb key<span class="token operator">=</span><span class="token punctuation">{</span>i<span class="token punctuation">}</span> uri<span class="token operator">=</span><span class="token punctuation">{</span>uri<span class="token punctuation">}</span> <span class="token operator">/</span><span class="token operator">></span><span class="token punctuation">;</span>
|
||
|
||
<span class="token keyword">var</span> styles <span class="token operator">=</span> StyleSheet<span class="token punctuation">.</span><span class="token function">create<span class="token punctuation">(</span></span><span class="token punctuation">{</span>
|
||
scrollView<span class="token punctuation">:</span> <span class="token punctuation">{</span>
|
||
backgroundColor<span class="token punctuation">:</span> <span class="token string">'#6A85B1'</span><span class="token punctuation">,</span>
|
||
height<span class="token punctuation">:</span> <span class="token number">300</span><span class="token punctuation">,</span>
|
||
<span class="token punctuation">}</span><span class="token punctuation">,</span>
|
||
horizontalScrollView<span class="token punctuation">:</span> <span class="token punctuation">{</span>
|
||
height<span class="token punctuation">:</span> <span class="token number">120</span><span class="token punctuation">,</span>
|
||
<span class="token punctuation">}</span><span class="token punctuation">,</span>
|
||
containerPage<span class="token punctuation">:</span> <span class="token punctuation">{</span>
|
||
height<span class="token punctuation">:</span> <span class="token number">50</span><span class="token punctuation">,</span>
|
||
width<span class="token punctuation">:</span> <span class="token number">50</span><span class="token punctuation">,</span>
|
||
backgroundColor<span class="token punctuation">:</span> <span class="token string">'#527FE4'</span><span class="token punctuation">,</span>
|
||
padding<span class="token punctuation">:</span> <span class="token number">5</span><span class="token punctuation">,</span>
|
||
<span class="token punctuation">}</span><span class="token punctuation">,</span>
|
||
text<span class="token punctuation">:</span> <span class="token punctuation">{</span>
|
||
fontSize<span class="token punctuation">:</span> <span class="token number">20</span><span class="token punctuation">,</span>
|
||
color<span class="token punctuation">:</span> <span class="token string">'#888888'</span><span class="token punctuation">,</span>
|
||
left<span class="token punctuation">:</span> <span class="token number">80</span><span class="token punctuation">,</span>
|
||
top<span class="token punctuation">:</span> <span class="token number">20</span><span class="token punctuation">,</span>
|
||
height<span class="token punctuation">:</span> <span class="token number">40</span><span class="token punctuation">,</span>
|
||
<span class="token punctuation">}</span><span class="token punctuation">,</span>
|
||
button<span class="token punctuation">:</span> <span class="token punctuation">{</span>
|
||
margin<span class="token punctuation">:</span> <span class="token number">7</span><span class="token punctuation">,</span>
|
||
padding<span class="token punctuation">:</span> <span class="token number">5</span><span class="token punctuation">,</span>
|
||
alignItems<span class="token punctuation">:</span> <span class="token string">'center'</span><span class="token punctuation">,</span>
|
||
backgroundColor<span class="token punctuation">:</span> <span class="token string">'#eaeaea'</span><span class="token punctuation">,</span>
|
||
borderRadius<span class="token punctuation">:</span> <span class="token number">3</span><span class="token punctuation">,</span>
|
||
<span class="token punctuation">}</span><span class="token punctuation">,</span>
|
||
buttonContents<span class="token punctuation">:</span> <span class="token punctuation">{</span>
|
||
flexDirection<span class="token punctuation">:</span> <span class="token string">'row'</span><span class="token punctuation">,</span>
|
||
width<span class="token punctuation">:</span> <span class="token number">64</span><span class="token punctuation">,</span>
|
||
height<span class="token punctuation">:</span> <span class="token number">64</span><span class="token punctuation">,</span>
|
||
<span class="token punctuation">}</span><span class="token punctuation">,</span>
|
||
img<span class="token punctuation">:</span> <span class="token punctuation">{</span>
|
||
width<span class="token punctuation">:</span> <span class="token number">64</span><span class="token punctuation">,</span>
|
||
height<span class="token punctuation">:</span> <span class="token number">64</span><span class="token punctuation">,</span>
|
||
<span class="token punctuation">}</span>
|
||
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ga('create', 'UA-41298772-2', 'facebook.github.io');
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