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react-native/docs/autogen_Text.md
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2017-08-31 11:29:32 -07:00

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---
id: text
title: Text
category: Components
permalink: docs/text.html
---
<div><div><p>A React component for displaying text.</p><p><code>Text</code> supports nesting, styling, and touch handling.</p><p>In the following example, the nested title and body text will inherit the <code>fontFamily</code> from
<code>styles.baseText</code>, but the title provides its own additional styles. The title and body will
stack on top of each other on account of the literal newlines:</p><div class="web-player"><div class="prism language-javascript"><span class="token keyword">import</span> React<span class="token punctuation">,</span> <span class="token punctuation">{</span> Component <span class="token punctuation">}</span> <span class="token keyword">from</span> <span class="token string">'react'</span><span class="token punctuation">;</span>
<span class="token keyword">import</span> <span class="token punctuation">{</span> AppRegistry<span class="token punctuation">,</span> Text<span class="token punctuation">,</span> StyleSheet <span class="token punctuation">}</span> <span class="token keyword">from</span> <span class="token string">'react-native'</span><span class="token punctuation">;</span>
<span class="token keyword">export</span> <span class="token keyword">default</span> <span class="token keyword">class</span> <span class="token class-name">TextInANest</span> <span class="token keyword">extends</span> <span class="token class-name">Component</span> <span class="token punctuation">{</span>
<span class="token function">constructor</span><span class="token punctuation">(</span>props<span class="token punctuation">)</span> <span class="token punctuation">{</span>
<span class="token keyword">super</span><span class="token punctuation">(</span>props<span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token keyword">this</span><span class="token punctuation">.</span>state <span class="token operator">=</span> <span class="token punctuation">{</span>
titleText<span class="token punctuation">:</span> <span class="token string">"Bird's Nest"</span><span class="token punctuation">,</span>
bodyText<span class="token punctuation">:</span> <span class="token string">'This is not really a bird nest.'</span>
<span class="token punctuation">}</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>
<span class="token function">render</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>
<span class="token operator">&lt;</span>Text style<span class="token operator">=</span><span class="token punctuation">{</span>styles<span class="token punctuation">.</span>baseText<span class="token punctuation">}</span><span class="token operator">&gt;</span>
<span class="token operator">&lt;</span>Text style<span class="token operator">=</span><span class="token punctuation">{</span>styles<span class="token punctuation">.</span>titleText<span class="token punctuation">}</span> onPress<span class="token operator">=</span><span class="token punctuation">{</span><span class="token keyword">this</span><span class="token punctuation">.</span>onPressTitle<span class="token punctuation">}</span><span class="token operator">&gt;</span>
<span class="token punctuation">{</span><span class="token keyword">this</span><span class="token punctuation">.</span>state<span class="token punctuation">.</span>titleText<span class="token punctuation">}</span><span class="token punctuation">{</span><span class="token string">'\n'</span><span class="token punctuation">}</span><span class="token punctuation">{</span><span class="token string">'\n'</span><span class="token punctuation">}</span>
<span class="token operator">&lt;</span><span class="token operator">/</span>Text<span class="token operator">&gt;</span>
<span class="token operator">&lt;</span>Text numberOfLines<span class="token operator">=</span><span class="token punctuation">{</span><span class="token number">5</span><span class="token punctuation">}</span><span class="token operator">&gt;</span>
<span class="token punctuation">{</span><span class="token keyword">this</span><span class="token punctuation">.</span>state<span class="token punctuation">.</span>bodyText<span class="token punctuation">}</span>
<span class="token operator">&lt;</span><span class="token operator">/</span>Text<span class="token operator">&gt;</span>
<span class="token operator">&lt;</span><span class="token operator">/</span>Text<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 keyword">const</span> styles <span class="token operator">=</span> StyleSheet<span class="token punctuation">.</span><span class="token function">create</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
baseText<span class="token punctuation">:</span> <span class="token punctuation">{</span>
fontFamily<span class="token punctuation">:</span> <span class="token string">'Cochin'</span><span class="token punctuation">,</span>
<span class="token punctuation">}</span><span class="token punctuation">,</span>
titleText<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>
fontWeight<span class="token punctuation">:</span> <span class="token string">'bold'</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 comment" spellcheck="true">
// skip this line if using Create React Native App
</span>AppRegistry<span class="token punctuation">.</span><span class="token function">registerComponent</span><span class="token punctuation">(</span><span class="token string">'TextInANest'</span><span class="token punctuation">,</span> <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> TextInANest<span class="token punctuation">)</span><span class="token punctuation">;</span></div><iframe style="margin-top:4px;" width="880" height="420" data-src="//cdn.rawgit.com/dabbott/react-native-web-player/gh-v1.2.6/index.html#code=import%20React%2C%20%7B%20Component%20%7D%20from%20'react'%3B%0Aimport%20%7B%20AppRegistry%2C%20Text%2C%20StyleSheet%20%7D%20from%20'react-native'%3B%0A%0Aexport%20default%20class%20TextInANest%20extends%20Component%20%7B%0A%20%20constructor(props)%20%7B%0A%20%20%20%20super(props)%3B%0A%20%20%20%20this.state%20%3D%20%7B%0A%20%20%20%20%20%20titleText%3A%20%22Bird's%20Nest%22%2C%0A%20%20%20%20%20%20bodyText%3A%20'This%20is%20not%20really%20a%20bird%20nest.'%0A%20%20%20%20%7D%3B%0A%20%20%7D%0A%0A%20%20render()%20%7B%0A%20%20%20%20return%20(%0A%20%20%20%20%20%20%3CText%20style%3D%7Bstyles.baseText%7D%3E%0A%20%20%20%20%20%20%20%20%3CText%20style%3D%7Bstyles.titleText%7D%20onPress%3D%7Bthis.onPressTitle%7D%3E%0A%20%20%20%20%20%20%20%20%20%20%7Bthis.state.titleText%7D%7B'%5Cn'%7D%7B'%5Cn'%7D%0A%20%20%20%20%20%20%20%20%3C%2FText%3E%0A%20%20%20%20%20%20%20%20%3CText%20numberOfLines%3D%7B5%7D%3E%0A%20%20%20%20%20%20%20%20%20%20%7Bthis.state.bodyText%7D%0A%20%20%20%20%20%20%20%20%3C%2FText%3E%0A%20%20%20%20%20%20%3C%2FText%3E%0A%20%20%20%20)%3B%0A%20%20%7D%0A%7D%0A%0Aconst%20styles%20%3D%20StyleSheet.create(%7B%0A%20%20baseText%3A%20%7B%0A%20%20%20%20fontFamily%3A%20'Cochin'%2C%0A%20%20%7D%2C%0A%20%20titleText%3A%20%7B%0A%20%20%20%20fontSize%3A%2020%2C%0A%20%20%20%20fontWeight%3A%20'bold'%2C%0A%20%20%7D%2C%0A%7D)%3B%0A%0A%2F%2F%20skip%20this%20line%20if%20using%20Create%20React%20Native%20App%0AAppRegistry.registerComponent('TextInANest'%2C%20()%20%3D%3E%20TextInANest)%3B" frameborder="0"></iframe></div></div><h3><a class="anchor" name="props"></a>Props <a class="hash-link" href="docs/text.html#props">#</a></h3><div class="props"><div class="prop"><h4 class="propTitle"><a class="anchor" name="accessible"></a>accessible?: <span class="propType">bool</span> <a class="hash-link" href="docs/text.html#accessible">#</a></h4><div><p>When set to <code>true</code>, indicates that the view is an accessibility element. The default value
for a <code>Text</code> element is <code>true</code>.</p><p>See the
<a href="docs/accessibility.html#accessible-ios-android" target="_blank">Accessibility guide</a>
for more information.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="allowfontscaling"></a>allowFontScaling?: <span class="propType">bool</span> <a class="hash-link" href="docs/text.html#allowfontscaling">#</a></h4><div><p>Specifies whether fonts should scale to respect Text Size accessibility settings. The
default is <code>true</code>.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="ellipsizemode"></a>ellipsizeMode?: <span class="propType">enum('head', 'middle', 'tail', 'clip')</span> <a class="hash-link" href="docs/text.html#ellipsizemode">#</a></h4><div><p>When <code>numberOfLines</code> is set, this prop defines how text will be truncated.
<code>numberOfLines</code> must be set in conjunction with this prop.</p><p>This can be one of the following values:</p><ul><li><code>head</code> - The line is displayed so that the end fits in the container and the missing text
at the beginning of the line is indicated by an ellipsis glyph. e.g., "...wxyz"</li><li><code>middle</code> - The line is displayed so that the beginning and end fit in the container and the
missing text in the middle is indicated by an ellipsis glyph. "ab...yz"</li><li><code>tail</code> - The line is displayed so that the beginning fits in the container and the
missing text at the end of the line is indicated by an ellipsis glyph. e.g., "abcd..."</li><li><code>clip</code> - Lines are not drawn past the edge of the text container.</li></ul><p>The default is <code>tail</code>.</p><blockquote><p><code>clip</code> is working only for iOS</p></blockquote></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="nativeid"></a>nativeID?: <span class="propType">string</span> <a class="hash-link" href="docs/text.html#nativeid">#</a></h4><div><p>Used to locate this view from native code.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="numberoflines"></a>numberOfLines?: <span class="propType">number</span> <a class="hash-link" href="docs/text.html#numberoflines">#</a></h4><div><p>Used to truncate the text with an ellipsis after computing the text
layout, including line wrapping, such that the total number of lines
does not exceed this number.</p><p>This prop is commonly used with <code>ellipsizeMode</code>.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="onlayout"></a>onLayout?: <span class="propType">function</span> <a class="hash-link" href="docs/text.html#onlayout">#</a></h4><div><p>Invoked on mount and layout changes with</p><p> <code>{nativeEvent: {layout: {x, y, width, height}}}</code></p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="onlongpress"></a>onLongPress?: <span class="propType">function</span> <a class="hash-link" href="docs/text.html#onlongpress">#</a></h4><div><p>This function is called on long press.</p><p>e.g., <code>onLongPress={this.increaseSize}&gt;</code></p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="onpress"></a>onPress?: <span class="propType">function</span> <a class="hash-link" href="docs/text.html#onpress">#</a></h4><div><p>This function is called on press.</p><p>e.g., <code>onPress={() =&gt; console.log('1st')}</code></p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="pressretentionoffset"></a>pressRetentionOffset?: <span class="propType">{top: number, left: number, bottom: number, right: number}</span> <a class="hash-link" href="docs/text.html#pressretentionoffset">#</a></h4><div><p>When the scroll view is disabled, this defines how far your touch may
move off of the button, before deactivating the button. Once deactivated,
try moving it back and you'll see that the button is once again
reactivated! Move it back and forth several times while the scroll view
is disabled. Ensure you pass in a constant to reduce memory allocations.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="selectable"></a>selectable?: <span class="propType">bool</span> <a class="hash-link" href="docs/text.html#selectable">#</a></h4><div><p>Lets the user select text, to use the native copy and paste functionality.</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/text.html#style">#</a></h4><div class="compactProps"><div class="prop"><h6 class="propTitle"><a href="docs/view.html#style">View#style...</a></h6></div><div class="prop"><h6 class="propTitle">color <span class="propType"><a href="docs/colors.html">color</a></span> </h6></div><div class="prop"><h6 class="propTitle">fontFamily <span class="propType">string</span> </h6></div><div class="prop"><h6 class="propTitle">fontSize <span class="propType">number</span> </h6></div><div class="prop"><h6 class="propTitle">fontStyle <span class="propType">enum('normal', 'italic')</span> </h6></div><div class="prop"><h6 class="propTitle">fontWeight <span class="propType">enum('normal', 'bold', '100', '200', '300', '400', '500', '600', '700', '800', '900')</span> <div><p>Specifies font weight. The values 'normal' and 'bold' are supported for
most fonts. Not all fonts have a variant for each of the numeric values,
in that case the closest one is chosen.</p></div></h6></div><div class="prop"><h6 class="propTitle">lineHeight <span class="propType">number</span> </h6></div><div class="prop"><h6 class="propTitle">textAlign <span class="propType">enum('auto', 'left', 'right', 'center', 'justify')</span> <div><p>Specifies text alignment. The value 'justify' is only supported on iOS and
fallbacks to <code>left</code> on Android.</p></div></h6></div><div class="prop"><h6 class="propTitle">textDecorationLine <span class="propType">enum('none', 'underline', 'line-through', 'underline line-through')</span> </h6></div><div class="prop"><h6 class="propTitle">textShadowColor <span class="propType"><a href="docs/colors.html">color</a></span> </h6></div><div class="prop"><h6 class="propTitle">textShadowOffset <span class="propType"><span>{<span><span><span>width: number</span>, </span><span>height: number</span></span>}</span></span> </h6></div><div class="prop"><h6 class="propTitle">textShadowRadius <span class="propType">number</span> </h6></div><div class="prop"><h6 class="propTitle"><span class="platform">android</span>includeFontPadding <span class="propType">bool</span> <div><p>Set to <code>false</code> to remove extra font padding intended to make space for certain ascenders / descenders.
With some fonts, this padding can make text look slightly misaligned when centered vertically.
For best results also set <code>textAlignVertical</code> to <code>center</code>. Default is true.</p></div></h6></div><div class="prop"><h6 class="propTitle"><span class="platform">android</span>textAlignVertical <span class="propType">enum('auto', 'top', 'bottom', 'center')</span> </h6></div><div class="prop"><h6 class="propTitle"><span class="platform">ios</span>fontVariant <span class="propType"><span>[enum('small-caps', 'oldstyle-nums', 'lining-nums', 'tabular-nums', 'proportional-nums')]</span></span> </h6></div><div class="prop"><h6 class="propTitle"><span class="platform">ios</span>letterSpacing <span class="propType">number</span> </h6></div><div class="prop"><h6 class="propTitle"><span class="platform">ios</span>textDecorationColor <span class="propType"><a href="docs/colors.html">color</a></span> </h6></div><div class="prop"><h6 class="propTitle"><span class="platform">ios</span>textDecorationStyle <span class="propType">enum('solid', 'double', 'dotted', 'dashed')</span> </h6></div><div class="prop"><h6 class="propTitle"><span class="platform">ios</span>writingDirection <span class="propType">enum('auto', 'ltr', 'rtl')</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="docs/text.html#testid">#</a></h4><div><p>Used to locate this view in end-to-end tests.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="disabled"></a><span class="platform">android</span>disabled?: <span class="propType">bool</span> <a class="hash-link" href="docs/text.html#disabled">#</a></h4><div><p>Specifies the disabled state of the text view for testing purposes</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="selectioncolor"></a><span class="platform">android</span>selectionColor?: <span class="propType"><a href="docs/colors.html">color</a></span> <a class="hash-link" href="docs/text.html#selectioncolor">#</a></h4><div><p>The highlight color of the text.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="textbreakstrategy"></a><span class="platform">android</span>textBreakStrategy?: <span class="propType">enum('simple', 'highQuality', 'balanced')</span> <a class="hash-link" href="docs/text.html#textbreakstrategy">#</a></h4><div><p>Set text break strategy on Android API Level 23+, possible values are <code>simple</code>, <code>highQuality</code>, <code>balanced</code>
The default value is <code>highQuality</code>.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="adjustsfontsizetofit"></a><span class="platform">ios</span>adjustsFontSizeToFit?: <span class="propType">bool</span> <a class="hash-link" href="docs/text.html#adjustsfontsizetofit">#</a></h4><div><p>Specifies whether font should be scaled down automatically to fit given style constraints.</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="minimumfontscale"></a><span class="platform">ios</span>minimumFontScale?: <span class="propType">number</span> <a class="hash-link" href="docs/text.html#minimumfontscale">#</a></h4><div><p>Specifies smallest possible scale a font can reach when adjustsFontSizeToFit is enabled. (values 0.01-1.0).</p></div></div><div class="prop"><h4 class="propTitle"><a class="anchor" name="suppresshighlighting"></a><span class="platform">ios</span>suppressHighlighting?: <span class="propType">bool</span> <a class="hash-link" href="docs/text.html#suppresshighlighting">#</a></h4><div><p>When <code>true</code>, no visual change is made when text is pressed down. By
default, a gray oval highlights the text on press down.</p></div></div></div></div>