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<!DOCTYPE html><html><head><meta charset="utf-8"><meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"><title>React Native | A framework for building native apps using React</title><meta name="viewport" content="width=device-width"><meta property="og:title" content="React Native | A framework for building native apps using React"><meta property="og:type" content="website"><meta property="og:url" content="http://facebook.github.io/react-native/index.html"><meta property="og:image" content="http://facebook.github.io/react-native/img/opengraph.png?2"><meta property="og:description" content="A framework for building native apps using React"><link rel="shortcut icon" href="/react-native/img/favicon.png?2"><link rel="stylesheet" href="/react-native/css/react-native.css"><script type="text/javascript" src="//use.typekit.net/vqa1hcx.js"></script><script type="text/javascript">try{Typekit.load();}catch(e){}</script></head><body><div class="container"><div class="nav-main"><div class="wrap"><a class="nav-home" href="/react-native/"><img src="/react-native/img/header_logo.png">React Native</a><div class="nav-site-wrapper"><ul class="nav-site nav-site-internal"><li><a href="/react-native/docs/getting-started.html" class="active">Docs</a></li><li><a href="/react-native/support.html" class="">Support</a></li></ul><ul class="nav-site nav-site-external"><li><a href="http://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-section"><h3>Quick Start</h3><ul><li><a style="margin-left:0;" class="" href="/react-native/docs/getting-started.html#content">Getting Started</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/tutorial.html#content">Tutorial</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/videos.html#content">Videos</a></li></ul></div><div class="nav-docs-section"><h3>Guides</h3><ul><li><a style="margin-left:0;" class="" href="/react-native/docs/style.html#content">Style</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/gesture-responder-system.html#content">Gesture Responder System</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/nativemodulesios.html#content">Native Modules (iOS)</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/linking-libraries.html#content">Linking Libraries</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/debugging.html#content">Debugging</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/testing.html#content">Testing</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/runningondevice.html#content">Running On Device</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/embedded-app.html#content">Integration with Existing App</a></li></ul></div><div class="nav-docs-section"><h3>components</h3><ul><li><a style="margin-left:0;" class="" href="/react-native/docs/activityindicatorios.html#content">ActivityIndicatorIOS</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/datepickerios.html#content">DatePickerIOS</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/image.html#content">Image</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/listview.html#content">ListView</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/mapview.html#content">MapView</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/navigator.html#content">Navigator</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/navigatorios.html#content">NavigatorIOS</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/pickerios.html#content">PickerIOS</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/scrollview.html#content">ScrollView</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/sliderios.html#content">SliderIOS</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/switchios.html#content">SwitchIOS</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/tabbarios.html#content">TabBarIOS</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/text.html#content">Text</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/textinput.html#content">TextInput</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/touchablehighlight.html#content">TouchableHighlight</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/touchableopacity.html#content">TouchableOpacity</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/touchablewithoutfeedback.html#content">TouchableWithoutFeedback</a></li><li><a style="margin-left:0;" class="active" href="/react-native/docs/view.html#content">View</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/webview.html#content">WebView</a></li></ul></div><div class="nav-docs-section"><h3>apis</h3><ul><li><a style="margin-left:0;" class="" href="/react-native/docs/alertios.html#content">AlertIOS</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/appregistry.html#content">AppRegistry</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/appstateios.html#content">AppStateIOS</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/asyncstorage.html#content">AsyncStorage</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/cameraroll.html#content">CameraRoll</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/interactionmanager.html#content">InteractionManager</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/layoutanimation.html#content">LayoutAnimation</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/linkingios.html#content">LinkingIOS</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/netinfo.html#content">NetInfo</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/panresponder.html#content">PanResponder</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/pixelratio.html#content">PixelRatio</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/pushnotificationios.html#content">PushNotificationIOS</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/statusbarios.html#content">StatusBarIOS</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/stylesheet.html#content">StyleSheet</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/vibrationios.html#content">VibrationIOS</a></li></ul></div><div class="nav-docs-section"><h3>Polyfills</h3><ul><li><a style="margin-left:0;" class="" href="/react-native/docs/flexbox.html#content">Flexbox</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/geolocation.html#content">Geolocation</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/network.html#content">Network</a></li><li><a style="margin-left:0;" class="" href="/react-native/docs/timers.html#content">Timers</a></li></ul></div></div><div class="inner-content"><a id="content"></a><h1>View</h1><div><div><p>The most fundamental component for building UI, <code>View</code> is a
container that supports layout with flexbox, style, some touch handling, and
accessibility controls, and is designed to be nested inside other views and
to have 0 to many children of any type. <code>View</code> maps directly to the native
view equivalent on whatever platform react is running on, whether that is a
<code>UIView</code>, <code>&lt;div&gt;</code>, <code>android.view</code>, etc. This example creates a <code>View</code> that
wraps two colored boxes and custom component in a row with padding.</p><div class="prism language-javascript">&lt;View style<span class="token operator">=</span><span class="token punctuation">{</span><span class="token punctuation">{</span>flexDirection<span class="token punctuation">:</span> <span class="token string">&#x27;row&#x27;</span><span class="token punctuation">,</span> height<span class="token punctuation">:</span> <span class="token number">100</span><span class="token punctuation">,</span> padding<span class="token punctuation">:</span> <span class="token number">20</span><span class="token punctuation">}</span><span class="token punctuation">}</span><span class="token operator">&gt;</span>
&lt;View style<span class="token operator">=</span><span class="token punctuation">{</span><span class="token punctuation">{</span>backgroundColor<span class="token punctuation">:</span> <span class="token string">&#x27;blue&#x27;</span><span class="token punctuation">,</span> flex<span class="token punctuation">:</span> <span class="token number">0.3</span><span class="token punctuation">}</span><span class="token punctuation">}</span> <span class="token operator">/</span><span class="token operator">&gt;</span>
&lt;View style<span class="token operator">=</span><span class="token punctuation">{</span><span class="token punctuation">{</span>backgroundColor<span class="token punctuation">:</span> <span class="token string">&#x27;red&#x27;</span><span class="token punctuation">,</span> flex<span class="token punctuation">:</span> <span class="token number">0.5</span><span class="token punctuation">}</span><span class="token punctuation">}</span> <span class="token operator">/</span><span class="token operator">&gt;</span>
&lt;MyCustomComponent <span class="token punctuation">{</span><span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token punctuation">.</span>customProps<span class="token punctuation">}</span> <span class="token operator">/</span><span class="token operator">&gt;</span>
&lt;<span class="token operator">/</span>View<span class="token operator">&gt;</span></div><p><code>View</code>s are designed to be used with <code>StyleSheet</code>s for clarity and
performance, although inline styles are also supported.</p></div><h3><a class="anchor" name="props"></a><a class="edit-github" href="https://github.com/facebook/react-native/blob/master/Libraries/Components/View/View.js">Edit on GitHub</a>Props <a class="hash-link" href="#props">#</a></h3><div class="props"><div class="prop"><h4 class="propTitle"><a class="anchor" name="accessibilitylabel"></a>accessibilityLabel <span class="propType">string</span> <a class="hash-link" href="#accessibilitylabel">#</a></h4><div><p>Overrides the text that&#x27;s read by the screen reader when the user interacts
with the element. By default, the label is constructed by traversing all the
children and accumulating all the Text nodes separated by space.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="accessible"></a>accessible <span class="propType">bool</span> <a class="hash-link" href="#accessible">#</a></h4><div><p>When true, indicates that the view is an accessibility element. By default,
all the touchable elements are accessible.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="onmoveshouldsetresponder"></a>onMoveShouldSetResponder <span class="propType">function</span> <a class="hash-link" href="#onmoveshouldsetresponder">#</a></h4><div><p>For most touch interactions, you&#x27;ll simply want to wrap your component in
<code>TouchableHighlight</code> or <code>TouchableOpacity</code>. Check out <code>Touchable.js</code>,
<code>ScrollResponder.js</code> and <code>ResponderEventPlugin.js</code> for more discussion.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="onrespondergrant"></a>onResponderGrant <span class="propType">function</span> <a class="hash-link" href="#onrespondergrant">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="onrespondermove"></a>onResponderMove <span class="propType">function</span> <a class="hash-link" href="#onrespondermove">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="onresponderreject"></a>onResponderReject <span class="propType">function</span> <a class="hash-link" href="#onresponderreject">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="onresponderrelease"></a>onResponderRelease <span class="propType">function</span> <a class="hash-link" href="#onresponderrelease">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="onresponderterminate"></a>onResponderTerminate <span class="propType">function</span> <a class="hash-link" href="#onresponderterminate">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="onresponderterminationrequest"></a>onResponderTerminationRequest <span class="propType">function</span> <a class="hash-link" href="#onresponderterminationrequest">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="onstartshouldsetresponder"></a>onStartShouldSetResponder <span class="propType">function</span> <a class="hash-link" href="#onstartshouldsetresponder">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="onstartshouldsetrespondercapture"></a>onStartShouldSetResponderCapture <span class="propType">function</span> <a class="hash-link" href="#onstartshouldsetrespondercapture">#</a></h4></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="pointerevents"></a>pointerEvents <span class="propType">enum(&#x27;box-none&#x27;, &#x27;none&#x27;, &#x27;box-only&#x27;, &#x27;auto&#x27;)</span> <a class="hash-link" href="#pointerevents">#</a></h4><div><p>In the absence of <code>auto</code> property, <code>none</code> is much like <code>CSS</code>&#x27;s <code>none</code>
value. <code>box-none</code> is as if you had applied the <code>CSS</code> class:</p><div class="prism language-javascript"><span class="token punctuation">.</span>box<span class="token operator">-</span>none <span class="token punctuation">{</span>
pointer<span class="token operator">-</span>events<span class="token punctuation">:</span> none<span class="token punctuation">;</span>
<span class="token punctuation">}</span>
<span class="token punctuation">.</span>box<span class="token operator">-</span>none <span class="token operator">*</span> <span class="token punctuation">{</span>
pointer<span class="token operator">-</span>events<span class="token punctuation">:</span> all<span class="token punctuation">;</span>
<span class="token punctuation">}</span></div><p><code>box-only</code> is the equivalent of</p><div class="prism language-javascript"><span class="token punctuation">.</span>box<span class="token operator">-</span>only <span class="token punctuation">{</span>
pointer<span class="token operator">-</span>events<span class="token punctuation">:</span> all<span class="token punctuation">;</span>
<span class="token punctuation">}</span>
<span class="token punctuation">.</span>box<span class="token operator">-</span>only <span class="token operator">*</span> <span class="token punctuation">{</span>
pointer<span class="token operator">-</span>events<span class="token punctuation">:</span> none<span class="token punctuation">;</span>
<span class="token punctuation">}</span></div><p>But since <code>pointerEvents</code> does not affect layout/appearance, and we are
already deviating from the spec by adding additional modes, we opt to not
include <code>pointerEvents</code> on <code>style</code>. On some platforms, we would need to
implement it as a <code>className</code> anyways. Using <code>style</code> or not is an
implementation detail of the platform.</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="#removeclippedsubviews">#</a></h4><div><p>This is a special performance property exposed by RCTView and is useful
for scrolling content when there are many subviews, most of which are
offscreen. For this property to be effective, it must be applied to a
view that contains many subviews that extend outside its bound. The
subviews must also have overflow: hidden, as should the containing view
(or one of its superviews).</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="#style">#</a></h4><div class="compactProps"><div class="prop"><h6 class="propTitle"><a href="flexbox.html#proptypes">Flexbox...</a></h6></div><div class="prop"><h6 class="propTitle">backgroundColor <span class="propType">string</span></h6></div><div class="prop"><h6 class="propTitle">borderBottomColor <span class="propType">string</span></h6></div><div class="prop"><h6 class="propTitle">borderColor <span class="propType">string</span></h6></div><div class="prop"><h6 class="propTitle">borderLeftColor <span class="propType">string</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">string</span></h6></div><div class="prop"><h6 class="propTitle">borderTopColor <span class="propType">string</span></h6></div><div class="prop"><h6 class="propTitle">opacity <span class="propType">number</span></h6></div><div class="prop"><h6 class="propTitle">overflow <span class="propType">enum(&#x27;visible&#x27;, &#x27;hidden&#x27;)</span></h6></div><div class="prop"><h6 class="propTitle">rotation <span class="propType">number</span></h6></div><div class="prop"><h6 class="propTitle">scaleX <span class="propType">number</span></h6></div><div class="prop"><h6 class="propTitle">scaleY <span class="propType">number</span></h6></div><div class="prop"><h6 class="propTitle">shadowColor <span class="propType">string</span></h6></div><div class="prop"><h6 class="propTitle">shadowOffset <span class="propType">{h: number, w: number}</span></h6></div><div class="prop"><h6 class="propTitle">shadowOpacity <span class="propType">number</span></h6></div><div class="prop"><h6 class="propTitle">shadowRadius <span class="propType">number</span></h6></div><div class="prop"><h6 class="propTitle">transformMatrix <span class="propType">[number]</span></h6></div><div class="prop"><h6 class="propTitle">translateX <span class="propType">number</span></h6></div><div class="prop"><h6 class="propTitle">translateY <span class="propType">number</span></h6></div></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="testid"></a>testID <span class="propType">string</span> <a class="hash-link" href="#testid">#</a></h4><div><p>Used to locate this view in end-to-end tests.</p></div></div></div></div><div><h3><a class="anchor" name="examples"></a><a class="edit-github" href="https://github.com/facebook/react-native/blob/master/Examples/UIExplorer/ViewExample.js">Edit on GitHub</a>Examples <a class="hash-link" href="#examples">#</a></h3><div class="prism language-javascript"><span class="token string">&#x27;use strict&#x27;</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">&#x27;react-native&#x27;</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token keyword">var</span> <span class="token punctuation">{</span>
StyleSheet<span class="token punctuation">,</span>
Text<span class="token punctuation">,</span>
View<span class="token punctuation">,</span>
<span class="token punctuation">}</span> <span class="token operator">=</span> React<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>
box<span class="token punctuation">:</span> <span class="token punctuation">{</span>
backgroundColor<span class="token punctuation">:</span> <span class="token string">&#x27;#527FE4&#x27;</span><span class="token punctuation">,</span>
borderColor<span class="token punctuation">:</span> <span class="token string">&#x27;#000033&#x27;</span><span class="token punctuation">,</span>
borderWidth<span class="token punctuation">:</span> <span class="token number">1</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>
exports<span class="token punctuation">.</span>title <span class="token operator">=</span> <span class="token string">&#x27;&lt;View&gt;&#x27;</span><span class="token punctuation">;</span>
exports<span class="token punctuation">.</span>description <span class="token operator">=</span> <span class="token string">&#x27;Basic building block of all UI.&#x27;</span><span class="token punctuation">;</span>
exports<span class="token punctuation">.</span>displayName <span class="token operator">=</span> <span class="token string">&#x27;ViewExample&#x27;</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">&#x27;Background Color&#x27;</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">return</span> <span class="token punctuation">(</span>
&lt;View style<span class="token operator">=</span><span class="token punctuation">{</span><span class="token punctuation">{</span>backgroundColor<span class="token punctuation">:</span> <span class="token string">&#x27;#527FE4&#x27;</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 operator">&gt;</span>
&lt;Text style<span class="token operator">=</span><span class="token punctuation">{</span><span class="token punctuation">{</span>fontSize<span class="token punctuation">:</span> <span class="token number">11</span><span class="token punctuation">}</span><span class="token punctuation">}</span><span class="token operator">&gt;</span>
Blue background
&lt;<span class="token operator">/</span>Text<span class="token operator">&gt;</span>
&lt;<span class="token operator">/</span>View<span class="token operator">&gt;</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> <span class="token punctuation">{</span>
title<span class="token punctuation">:</span> <span class="token string">&#x27;Border&#x27;</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">return</span> <span class="token punctuation">(</span>
&lt;View style<span class="token operator">=</span><span class="token punctuation">{</span><span class="token punctuation">{</span>borderColor<span class="token punctuation">:</span> <span class="token string">&#x27;#527FE4&#x27;</span><span class="token punctuation">,</span> borderWidth<span class="token punctuation">:</span> <span class="token number">5</span><span class="token punctuation">,</span> padding<span class="token punctuation">:</span> <span class="token number">10</span><span class="token punctuation">}</span><span class="token punctuation">}</span><span class="token operator">&gt;</span>
&lt;Text style<span class="token operator">=</span><span class="token punctuation">{</span><span class="token punctuation">{</span>fontSize<span class="token punctuation">:</span> <span class="token number">11</span><span class="token punctuation">}</span><span class="token punctuation">}</span><span class="token operator">&gt;</span>5px blue border&lt;<span class="token operator">/</span>Text<span class="token operator">&gt;</span>
&lt;<span class="token operator">/</span>View<span class="token operator">&gt;</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> <span class="token punctuation">{</span>
title<span class="token punctuation">:</span> <span class="token string">&#x27;Padding/Margin&#x27;</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">return</span> <span class="token punctuation">(</span>
&lt;View style<span class="token operator">=</span><span class="token punctuation">{</span><span class="token punctuation">{</span>borderColor<span class="token punctuation">:</span> <span class="token string">&#x27;#bb0000&#x27;</span><span class="token punctuation">,</span> borderWidth<span class="token punctuation">:</span> <span class="token number">0.5</span><span class="token punctuation">}</span><span class="token punctuation">}</span><span class="token operator">&gt;</span>
&lt;View style<span class="token operator">=</span><span class="token punctuation">{</span><span class="token punctuation">[</span>styles<span class="token punctuation">.</span>box<span class="token punctuation">,</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><span class="token operator">&gt;</span>
&lt;Text style<span class="token operator">=</span><span class="token punctuation">{</span><span class="token punctuation">{</span>fontSize<span class="token punctuation">:</span> <span class="token number">11</span><span class="token punctuation">}</span><span class="token punctuation">}</span><span class="token operator">&gt;</span>5px padding&lt;<span class="token operator">/</span>Text<span class="token operator">&gt;</span>
&lt;<span class="token operator">/</span>View<span class="token operator">&gt;</span>
&lt;View style<span class="token operator">=</span><span class="token punctuation">{</span><span class="token punctuation">[</span>styles<span class="token punctuation">.</span>box<span class="token punctuation">,</span> <span class="token punctuation">{</span>margin<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><span class="token operator">&gt;</span>
&lt;Text style<span class="token operator">=</span><span class="token punctuation">{</span><span class="token punctuation">{</span>fontSize<span class="token punctuation">:</span> <span class="token number">11</span><span class="token punctuation">}</span><span class="token punctuation">}</span><span class="token operator">&gt;</span>5px margin&lt;<span class="token operator">/</span>Text<span class="token operator">&gt;</span>
&lt;<span class="token operator">/</span>View<span class="token operator">&gt;</span>
&lt;View style<span class="token operator">=</span><span class="token punctuation">{</span><span class="token punctuation">[</span>styles<span class="token punctuation">.</span>box<span class="token punctuation">,</span> <span class="token punctuation">{</span>margin<span class="token punctuation">:</span> <span class="token number">5</span><span class="token punctuation">,</span> padding<span class="token punctuation">:</span> <span class="token number">5</span><span class="token punctuation">,</span> alignSelf<span class="token punctuation">:</span> <span class="token string">&#x27;flex-start&#x27;</span><span class="token punctuation">}</span><span class="token punctuation">]</span><span class="token punctuation">}</span><span class="token operator">&gt;</span>
&lt;Text style<span class="token operator">=</span><span class="token punctuation">{</span><span class="token punctuation">{</span>fontSize<span class="token punctuation">:</span> <span class="token number">11</span><span class="token punctuation">}</span><span class="token punctuation">}</span><span class="token operator">&gt;</span>
5px margin and padding<span class="token punctuation">,</span>
&lt;<span class="token operator">/</span>Text<span class="token operator">&gt;</span>
&lt;Text style<span class="token operator">=</span><span class="token punctuation">{</span><span class="token punctuation">{</span>fontSize<span class="token punctuation">:</span> <span class="token number">11</span><span class="token punctuation">}</span><span class="token punctuation">}</span><span class="token operator">&gt;</span>
widthAutonomous<span class="token operator">=</span><span class="token boolean">true</span>
&lt;<span class="token operator">/</span>Text<span class="token operator">&gt;</span>
&lt;<span class="token operator">/</span>View<span class="token operator">&gt;</span>
&lt;<span class="token operator">/</span>View<span class="token operator">&gt;</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> <span class="token punctuation">{</span>
title<span class="token punctuation">:</span> <span class="token string">&#x27;Border Radius&#x27;</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">return</span> <span class="token punctuation">(</span>
&lt;View style<span class="token operator">=</span><span class="token punctuation">{</span><span class="token punctuation">{</span>borderWidth<span class="token punctuation">:</span> <span class="token number">0.5</span><span class="token punctuation">,</span> borderRadius<span class="token punctuation">:</span> <span class="token number">5</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 operator">&gt;</span>
&lt;Text style<span class="token operator">=</span><span class="token punctuation">{</span><span class="token punctuation">{</span>fontSize<span class="token punctuation">:</span> <span class="token number">11</span><span class="token punctuation">}</span><span class="token punctuation">}</span><span class="token operator">&gt;</span>
Too much use of `borderRadius` <span class="token punctuation">(</span>especially large radii<span class="token punctuation">)</span> on
anything which is scrolling may result <span class="token keyword">in</span> dropped frames<span class="token punctuation">.</span>
Use sparingly<span class="token punctuation">.</span>
&lt;<span class="token operator">/</span>Text<span class="token operator">&gt;</span>
&lt;<span class="token operator">/</span>View<span class="token operator">&gt;</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> <span class="token punctuation">{</span>
title<span class="token punctuation">:</span> <span class="token string">&#x27;Circle with Border Radius&#x27;</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">return</span> <span class="token punctuation">(</span>
&lt;View style<span class="token operator">=</span><span class="token punctuation">{</span><span class="token punctuation">{</span>borderRadius<span class="token punctuation">:</span> <span class="token number">10</span><span class="token punctuation">,</span> borderWidth<span class="token punctuation">:</span> <span class="token number">1</span><span class="token punctuation">,</span> width<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">20</span><span class="token punctuation">}</span><span class="token punctuation">}</span> <span class="token operator">/</span><span class="token operator">&gt;</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> <span class="token punctuation">{</span>
title<span class="token punctuation">:</span> <span class="token string">&#x27;Overflow&#x27;</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">return</span> <span class="token punctuation">(</span>
&lt;View style<span class="token operator">=</span><span class="token punctuation">{</span><span class="token punctuation">{</span>flexDirection<span class="token punctuation">:</span> <span class="token string">&#x27;row&#x27;</span><span class="token punctuation">}</span><span class="token punctuation">}</span><span class="token operator">&gt;</span>
&lt;View
style<span class="token operator">=</span><span class="token punctuation">{</span><span class="token punctuation">{</span>
width<span class="token punctuation">:</span> <span class="token number">95</span><span class="token punctuation">,</span>
height<span class="token punctuation">:</span> <span class="token number">10</span><span class="token punctuation">,</span>
marginRight<span class="token punctuation">:</span> <span class="token number">10</span><span class="token punctuation">,</span>
marginBottom<span class="token punctuation">:</span> <span class="token number">5</span><span class="token punctuation">,</span>
overflow<span class="token punctuation">:</span> <span class="token string">&#x27;hidden&#x27;</span><span class="token punctuation">,</span>
borderWidth<span class="token punctuation">:</span> <span class="token number">0.5</span><span class="token punctuation">,</span>
<span class="token punctuation">}</span><span class="token punctuation">}</span><span class="token operator">&gt;</span>
&lt;View style<span class="token operator">=</span><span class="token punctuation">{</span><span class="token punctuation">{</span>width<span class="token punctuation">:</span> <span class="token number">200</span><span class="token punctuation">,</span> height<span class="token punctuation">:</span> <span class="token number">20</span><span class="token punctuation">}</span><span class="token punctuation">}</span><span class="token operator">&gt;</span>
&lt;Text<span class="token operator">&gt;</span>Overflow hidden&lt;<span class="token operator">/</span>Text<span class="token operator">&gt;</span>
&lt;<span class="token operator">/</span>View<span class="token operator">&gt;</span>
&lt;<span class="token operator">/</span>View<span class="token operator">&gt;</span>
&lt;View style<span class="token operator">=</span><span class="token punctuation">{</span><span class="token punctuation">{</span>width<span class="token punctuation">:</span> <span class="token number">95</span><span class="token punctuation">,</span> height<span class="token punctuation">:</span> <span class="token number">10</span><span class="token punctuation">,</span> marginBottom<span class="token punctuation">:</span> <span class="token number">5</span><span class="token punctuation">,</span> borderWidth<span class="token punctuation">:</span> <span class="token number">0.5</span><span class="token punctuation">}</span><span class="token punctuation">}</span><span class="token operator">&gt;</span>
&lt;View style<span class="token operator">=</span><span class="token punctuation">{</span><span class="token punctuation">{</span>width<span class="token punctuation">:</span> <span class="token number">200</span><span class="token punctuation">,</span> height<span class="token punctuation">:</span> <span class="token number">20</span><span class="token punctuation">}</span><span class="token punctuation">}</span><span class="token operator">&gt;</span>
&lt;Text<span class="token operator">&gt;</span>Overflow visible&lt;<span class="token operator">/</span>Text<span class="token operator">&gt;</span>
&lt;<span class="token operator">/</span>View<span class="token operator">&gt;</span>
&lt;<span class="token operator">/</span>View<span class="token operator">&gt;</span>
&lt;<span class="token operator">/</span>View<span class="token operator">&gt;</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> <span class="token punctuation">{</span>
title<span class="token punctuation">:</span> <span class="token string">&#x27;Opacity&#x27;</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">return</span> <span class="token punctuation">(</span>
&lt;View<span class="token operator">&gt;</span>
&lt;View style<span class="token operator">=</span><span class="token punctuation">{</span><span class="token punctuation">{</span>opacity<span class="token punctuation">:</span> <span class="token number">0</span><span class="token punctuation">}</span><span class="token punctuation">}</span><span class="token operator">&gt;</span>&lt;Text<span class="token operator">&gt;</span>Opacity <span class="token number">0</span>&lt;<span class="token operator">/</span>Text<span class="token operator">&gt;</span>&lt;<span class="token operator">/</span>View<span class="token operator">&gt;</span>
&lt;View style<span class="token operator">=</span><span class="token punctuation">{</span><span class="token punctuation">{</span>opacity<span class="token punctuation">:</span> <span class="token number">0.1</span><span class="token punctuation">}</span><span class="token punctuation">}</span><span class="token operator">&gt;</span>&lt;Text<span class="token operator">&gt;</span>Opacity <span class="token number">0.1</span>&lt;<span class="token operator">/</span>Text<span class="token operator">&gt;</span>&lt;<span class="token operator">/</span>View<span class="token operator">&gt;</span>
&lt;View style<span class="token operator">=</span><span class="token punctuation">{</span><span class="token punctuation">{</span>opacity<span class="token punctuation">:</span> <span class="token number">0.3</span><span class="token punctuation">}</span><span class="token punctuation">}</span><span class="token operator">&gt;</span>&lt;Text<span class="token operator">&gt;</span>Opacity <span class="token number">0.3</span>&lt;<span class="token operator">/</span>Text<span class="token operator">&gt;</span>&lt;<span class="token operator">/</span>View<span class="token operator">&gt;</span>
&lt;View style<span class="token operator">=</span><span class="token punctuation">{</span><span class="token punctuation">{</span>opacity<span class="token punctuation">:</span> <span class="token number">0.5</span><span class="token punctuation">}</span><span class="token punctuation">}</span><span class="token operator">&gt;</span>&lt;Text<span class="token operator">&gt;</span>Opacity <span class="token number">0.5</span>&lt;<span class="token operator">/</span>Text<span class="token operator">&gt;</span>&lt;<span class="token operator">/</span>View<span class="token operator">&gt;</span>
&lt;View style<span class="token operator">=</span><span class="token punctuation">{</span><span class="token punctuation">{</span>opacity<span class="token punctuation">:</span> <span class="token number">0.7</span><span class="token punctuation">}</span><span class="token punctuation">}</span><span class="token operator">&gt;</span>&lt;Text<span class="token operator">&gt;</span>Opacity <span class="token number">0.7</span>&lt;<span class="token operator">/</span>Text<span class="token operator">&gt;</span>&lt;<span class="token operator">/</span>View<span class="token operator">&gt;</span>
&lt;View style<span class="token operator">=</span><span class="token punctuation">{</span><span class="token punctuation">{</span>opacity<span class="token punctuation">:</span> <span class="token number">0.9</span><span class="token punctuation">}</span><span class="token punctuation">}</span><span class="token operator">&gt;</span>&lt;Text<span class="token operator">&gt;</span>Opacity <span class="token number">0.9</span>&lt;<span class="token operator">/</span>Text<span class="token operator">&gt;</span>&lt;<span class="token operator">/</span>View<span class="token operator">&gt;</span>
&lt;View style<span class="token operator">=</span><span class="token punctuation">{</span><span class="token punctuation">{</span>opacity<span class="token punctuation">:</span> <span class="token number">1</span><span class="token punctuation">}</span><span class="token punctuation">}</span><span class="token operator">&gt;</span>&lt;Text<span class="token operator">&gt;</span>Opacity <span class="token number">1</span>&lt;<span class="token operator">/</span>Text<span class="token operator">&gt;</span>&lt;<span class="token operator">/</span>View<span class="token operator">&gt;</span>
&lt;<span class="token operator">/</span>View<span class="token operator">&gt;</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>
<span class="token punctuation">]</span><span class="token punctuation">;</span></div></div><div class="docs-prevnext"><a class="docs-next" href="webview.html#content">Next →</a></div></div></section><footer class="wrap"><div class="right">© 2015 Facebook Inc.</div></footer></div><div id="fb-root"></div><script>
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