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@@ -1,4 +1,4 @@
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||||
<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Animated · React Native</title><meta name="viewport" content="width=device-width"/><meta name="generator" content="Docusaurus"/><meta name="description" content="Animations are an important part of modern UX, and the `Animated` library is designed to make them fluid, powerful, and easy to build and maintain."/><meta name="docsearch:version" content="0.16"/><meta name="docsearch:language" content="en"/><meta property="og:title" content="Animated · React Native"/><meta property="og:type" content="website"/><meta property="og:url" content="https://facebook.github.io/react-native/"/><meta property="og:description" content="Animations are an important part of modern UX, and the `Animated` library is designed to make them fluid, powerful, and easy to build and maintain."/><meta name="twitter:card" content="summary"/><link rel="shortcut icon" href="/react-native/img/favicon.ico"/><link rel="stylesheet" href="https://cdn.jsdelivr.net/docsearch.js/1/docsearch.min.css"/><link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/solarized-dark.min.css"/><link rel="alternate" type="application/atom+xml" href="https://facebook.github.io/react-native/blog/atom.xml" title="React Native Blog ATOM Feed"/><link rel="alternate" type="application/rss+xml" href="https://facebook.github.io/react-native/blog/feed.xml" title="React Native Blog RSS Feed"/><script>
|
||||
<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Animated · React Native</title><meta name="viewport" content="width=device-width"/><meta name="generator" content="Docusaurus"/><meta name="description" content="Animations are an important part of modern UX, and the `Animated` library is designed to make them fluid, powerful, and possible to build and maintain."/><meta name="docsearch:version" content="0.16"/><meta name="docsearch:language" content="en"/><meta property="og:title" content="Animated · React Native"/><meta property="og:type" content="website"/><meta property="og:url" content="https://facebook.github.io/react-native/"/><meta property="og:description" content="Animations are an important part of modern UX, and the `Animated` library is designed to make them fluid, powerful, and possible to build and maintain."/><meta name="twitter:card" content="summary"/><link rel="shortcut icon" href="/react-native/img/favicon.ico"/><link rel="stylesheet" href="https://cdn.jsdelivr.net/docsearch.js/1/docsearch.min.css"/><link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/solarized-dark.min.css"/><link rel="alternate" type="application/atom+xml" href="https://facebook.github.io/react-native/blog/atom.xml" title="React Native Blog ATOM Feed"/><link rel="alternate" type="application/rss+xml" href="https://facebook.github.io/react-native/blog/feed.xml" title="React Native Blog RSS Feed"/><script>
|
||||
(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
|
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(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
|
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m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
|
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@@ -68,7 +68,7 @@
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};
|
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}
|
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});
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</script></nav></div><div class="container mainContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/facebook/react-native-website/blob/master/docs/animated.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 class="postHeaderTitle">Animated</h1></header><article><div><span><p>Animations are an important part of modern UX, and the <code>Animated</code> library is designed to make them fluid, powerful, and easy to build and maintain.</p>
|
||||
</script></nav></div><div class="container mainContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/facebook/react-native-website/blob/master/docs/animated.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 class="postHeaderTitle">Animated</h1></header><article><div><span><p>Animations are an important part of modern UX, and the <code>Animated</code> library is designed to make them fluid, powerful, and possible to build and maintain.</p>
|
||||
<p>The simplest workflow is to create an <code>Animated.Value</code>, hook it up to one or more style attributes of an animated component, and then drive updates either via animations, such as <code>Animated.timing</code>, or by hooking into gestures like panning or scolling via <code>Animated.event</code>. <code>Animated.Value</code> can also bind to props other than style, and can be interpolated as well. Here is a basic example of a container view that will fade in when it's mounted:</p>
|
||||
<pre><code class="hljs css language-jsx"><span class="token keyword">class</span> <span class="token class-name">FadeInView</span> <span class="token keyword">extends</span> <span class="token class-name">React<span class="token punctuation">.</span>Component</span> <span class="token punctuation">{</span>
|
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<span class="token function">constructor</span><span class="token punctuation">(</span><span class="token parameter">props</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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@@ -96,12 +96,12 @@
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<span class="token punctuation">}</span>
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||||
<span class="token punctuation">}</span>
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</code></pre>
|
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<p>Note that only animatable components can be animated. <code>View</code>, <code>Text</code>, and <code>Image</code> are already provided, and you can create custom ones with <code>createAnimatedComponent</code>. These special components do the magic of binding the animated values to the properties, and do targetted native updates to avoid the cost of the react render and reconciliation process on every frame. They also handle cleanup on unmount so they are safe by default.</p>
|
||||
<p>Note that only animatable components can be animated. <code>View</code>, <code>Text</code>, and <code>Image</code> are already provided, and you can create custom ones with <code>createAnimatedComponent</code>. These particular components do the magic of binding the animated values to the properties, and do targetted native updates to avoid the cost of the react render and reconciliation process on every frame. They also handle cleanup on unmount so they are safe by default.</p>
|
||||
<p>Animations are heavily configurable. Custom and pre-defined easing functions, delays, durations, decay factors, spring constants, and more can all be tweaked depending on the type of animation.</p>
|
||||
<p>A single <code>Animated.Value</code> can drive any number of properties, and each property can be run through an interpolation first. An interpolation maps input ranges to output ranges, typically using a linear interpolation but also supports easing functions. By default, it will extrapolate the curve beyond the ranges given, but you can also have it clamp the output value.</p>
|
||||
<p>For example, you may want to think about your <code>Animated.Value</code> as going from 0 to 1, but animate the position from 150px to 0px and the opacity from 0 to</p>
|
||||
<ol>
|
||||
<li>This can easily be done by modifying <code>style</code> in the example above like so:</li>
|
||||
<li>This could be done by modifying <code>style</code> in the example above like so:</li>
|
||||
</ol>
|
||||
<pre><code class="hljs css language-jsx"> 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 keyword">this</span><span class="token punctuation">.</span>state<span class="token punctuation">.</span>fadeAnim<span class="token punctuation">,</span> <span class="token comment">// Binds directly</span>
|
||||
@@ -113,7 +113,7 @@
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||||
<span class="token punctuation">}</span><span class="token punctuation">]</span><span class="token punctuation">,</span>
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<span class="token punctuation">}</span><span class="token punctuation">}</span><span class="token operator">></span>
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</code></pre>
|
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<p>Animations can also be combined in complex ways using composition functions such as <code>sequence</code> and <code>parallel</code>, and can also be chained together simply by setting the <code>toValue</code> of one animation to be another <code>Animated.Value</code>.</p>
|
||||
<p>Animations can also be combined in complex ways using composition functions such as <code>sequence</code> and <code>parallel</code>, and can also be chained together by setting the <code>toValue</code> of one animation to be another <code>Animated.Value</code>.</p>
|
||||
<p><code>Animated.ValueXY</code> is handy for 2D animations, like panning, and there are other helpful additions like <code>setOffset</code> and <code>getLayout</code> to aid with typical interaction patterns, like drag-and-drop.</p>
|
||||
<p>You can see more example usage in <code>AnimationExample.js</code>, the Gratuitous Animation App, and <a href="http://facebook.github.io/react-native/animations.md">Animations documentation guide</a>.</p>
|
||||
<p>Note that <code>Animated</code> is designed to be fully serializable so that animations can be run in a high performace way, independent of the normal JavaScript event loop. This does influence the API, so keep that in mind when it seems a little trickier to do something compared to a fully synchronous system. Checkout <code>Animated.Value.addListener</code> as a way to work around some of these limitations, but use it sparingly since it might have performance implications in the future.</p>
|
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|
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@@ -1,4 +1,4 @@
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||||
<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Animated · React Native</title><meta name="viewport" content="width=device-width"/><meta name="generator" content="Docusaurus"/><meta name="description" content="Animations are an important part of modern UX, and the `Animated` library is designed to make them fluid, powerful, and easy to build and maintain."/><meta name="docsearch:version" content="0.16"/><meta name="docsearch:language" content="en"/><meta property="og:title" content="Animated · React Native"/><meta property="og:type" content="website"/><meta property="og:url" content="https://facebook.github.io/react-native/"/><meta property="og:description" content="Animations are an important part of modern UX, and the `Animated` library is designed to make them fluid, powerful, and easy to build and maintain."/><meta name="twitter:card" content="summary"/><link rel="shortcut icon" href="/react-native/img/favicon.ico"/><link rel="stylesheet" href="https://cdn.jsdelivr.net/docsearch.js/1/docsearch.min.css"/><link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/solarized-dark.min.css"/><link rel="alternate" type="application/atom+xml" href="https://facebook.github.io/react-native/blog/atom.xml" title="React Native Blog ATOM Feed"/><link rel="alternate" type="application/rss+xml" href="https://facebook.github.io/react-native/blog/feed.xml" title="React Native Blog RSS Feed"/><script>
|
||||
<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Animated · React Native</title><meta name="viewport" content="width=device-width"/><meta name="generator" content="Docusaurus"/><meta name="description" content="Animations are an important part of modern UX, and the `Animated` library is designed to make them fluid, powerful, and possible to build and maintain."/><meta name="docsearch:version" content="0.16"/><meta name="docsearch:language" content="en"/><meta property="og:title" content="Animated · React Native"/><meta property="og:type" content="website"/><meta property="og:url" content="https://facebook.github.io/react-native/"/><meta property="og:description" content="Animations are an important part of modern UX, and the `Animated` library is designed to make them fluid, powerful, and possible to build and maintain."/><meta name="twitter:card" content="summary"/><link rel="shortcut icon" href="/react-native/img/favicon.ico"/><link rel="stylesheet" href="https://cdn.jsdelivr.net/docsearch.js/1/docsearch.min.css"/><link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/solarized-dark.min.css"/><link rel="alternate" type="application/atom+xml" href="https://facebook.github.io/react-native/blog/atom.xml" title="React Native Blog ATOM Feed"/><link rel="alternate" type="application/rss+xml" href="https://facebook.github.io/react-native/blog/feed.xml" title="React Native Blog RSS Feed"/><script>
|
||||
(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
|
||||
(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
|
||||
m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
|
||||
@@ -68,7 +68,7 @@
|
||||
};
|
||||
}
|
||||
});
|
||||
</script></nav></div><div class="container mainContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/facebook/react-native-website/blob/master/docs/animated.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 class="postHeaderTitle">Animated</h1></header><article><div><span><p>Animations are an important part of modern UX, and the <code>Animated</code> library is designed to make them fluid, powerful, and easy to build and maintain.</p>
|
||||
</script></nav></div><div class="container mainContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/facebook/react-native-website/blob/master/docs/animated.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 class="postHeaderTitle">Animated</h1></header><article><div><span><p>Animations are an important part of modern UX, and the <code>Animated</code> library is designed to make them fluid, powerful, and possible to build and maintain.</p>
|
||||
<p>The simplest workflow is to create an <code>Animated.Value</code>, hook it up to one or more style attributes of an animated component, and then drive updates either via animations, such as <code>Animated.timing</code>, or by hooking into gestures like panning or scolling via <code>Animated.event</code>. <code>Animated.Value</code> can also bind to props other than style, and can be interpolated as well. Here is a basic example of a container view that will fade in when it's mounted:</p>
|
||||
<pre><code class="hljs css language-jsx"><span class="token keyword">class</span> <span class="token class-name">FadeInView</span> <span class="token keyword">extends</span> <span class="token class-name">React<span class="token punctuation">.</span>Component</span> <span class="token punctuation">{</span>
|
||||
<span class="token function">constructor</span><span class="token punctuation">(</span><span class="token parameter">props</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
|
||||
@@ -96,12 +96,12 @@
|
||||
<span class="token punctuation">}</span>
|
||||
<span class="token punctuation">}</span>
|
||||
</code></pre>
|
||||
<p>Note that only animatable components can be animated. <code>View</code>, <code>Text</code>, and <code>Image</code> are already provided, and you can create custom ones with <code>createAnimatedComponent</code>. These special components do the magic of binding the animated values to the properties, and do targetted native updates to avoid the cost of the react render and reconciliation process on every frame. They also handle cleanup on unmount so they are safe by default.</p>
|
||||
<p>Note that only animatable components can be animated. <code>View</code>, <code>Text</code>, and <code>Image</code> are already provided, and you can create custom ones with <code>createAnimatedComponent</code>. These particular components do the magic of binding the animated values to the properties, and do targetted native updates to avoid the cost of the react render and reconciliation process on every frame. They also handle cleanup on unmount so they are safe by default.</p>
|
||||
<p>Animations are heavily configurable. Custom and pre-defined easing functions, delays, durations, decay factors, spring constants, and more can all be tweaked depending on the type of animation.</p>
|
||||
<p>A single <code>Animated.Value</code> can drive any number of properties, and each property can be run through an interpolation first. An interpolation maps input ranges to output ranges, typically using a linear interpolation but also supports easing functions. By default, it will extrapolate the curve beyond the ranges given, but you can also have it clamp the output value.</p>
|
||||
<p>For example, you may want to think about your <code>Animated.Value</code> as going from 0 to 1, but animate the position from 150px to 0px and the opacity from 0 to</p>
|
||||
<ol>
|
||||
<li>This can easily be done by modifying <code>style</code> in the example above like so:</li>
|
||||
<li>This could be done by modifying <code>style</code> in the example above like so:</li>
|
||||
</ol>
|
||||
<pre><code class="hljs css language-jsx"> 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 keyword">this</span><span class="token punctuation">.</span>state<span class="token punctuation">.</span>fadeAnim<span class="token punctuation">,</span> <span class="token comment">// Binds directly</span>
|
||||
@@ -113,7 +113,7 @@
|
||||
<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>
|
||||
</code></pre>
|
||||
<p>Animations can also be combined in complex ways using composition functions such as <code>sequence</code> and <code>parallel</code>, and can also be chained together simply by setting the <code>toValue</code> of one animation to be another <code>Animated.Value</code>.</p>
|
||||
<p>Animations can also be combined in complex ways using composition functions such as <code>sequence</code> and <code>parallel</code>, and can also be chained together by setting the <code>toValue</code> of one animation to be another <code>Animated.Value</code>.</p>
|
||||
<p><code>Animated.ValueXY</code> is handy for 2D animations, like panning, and there are other helpful additions like <code>setOffset</code> and <code>getLayout</code> to aid with typical interaction patterns, like drag-and-drop.</p>
|
||||
<p>You can see more example usage in <code>AnimationExample.js</code>, the Gratuitous Animation App, and <a href="http://facebook.github.io/react-native/animations.md">Animations documentation guide</a>.</p>
|
||||
<p>Note that <code>Animated</code> is designed to be fully serializable so that animations can be run in a high performace way, independent of the normal JavaScript event loop. This does influence the API, so keep that in mind when it seems a little trickier to do something compared to a fully synchronous system. Checkout <code>Animated.Value.addListener</code> as a way to work around some of these limitations, but use it sparingly since it might have performance implications in the future.</p>
|
||||
|
||||
@@ -69,7 +69,7 @@
|
||||
}
|
||||
});
|
||||
</script></nav></div><div class="container mainContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/facebook/react-native-website/blob/master/docs/scrollview.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 class="postHeaderTitle">ScrollView</h1></header><article><div><span><p>Component that wraps platform ScrollView while providing integration with touch locking "responder" system.</p>
|
||||
<p>Keep in mind that ScrollViews must have a bounded height in order to work, since they contain unbounded-height children into a bounded container (via a scroll interaction). In order to bound the height of a ScrollView, either set the height of the view directly (discouraged) or make sure all parent views have bounded height. Forgetting to transfer <code>{flex: 1}</code> down the view stack can lead to errors here, which the element inspector makes easy to debug.</p>
|
||||
<p>Keep in mind that ScrollViews must have a bounded height in order to work, since they contain unbounded-height children into a bounded container (via a scroll interaction). In order to bound the height of a ScrollView, either set the height of the view directly (discouraged) or make sure all parent views have bounded height. Forgetting to transfer <code>{flex: 1}</code> down the view stack can lead to errors here, which the element inspector helps to debug.</p>
|
||||
<p>Doesn't yet support other contained responders from blocking this scroll view from becoming the responder.</p>
|
||||
<h3><a class="anchor" aria-hidden="true" id="props"></a><a href="#props" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Props</h3>
|
||||
<ul>
|
||||
|
||||
@@ -69,7 +69,7 @@
|
||||
}
|
||||
});
|
||||
</script></nav></div><div class="container mainContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/facebook/react-native-website/blob/master/docs/scrollview.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 class="postHeaderTitle">ScrollView</h1></header><article><div><span><p>Component that wraps platform ScrollView while providing integration with touch locking "responder" system.</p>
|
||||
<p>Keep in mind that ScrollViews must have a bounded height in order to work, since they contain unbounded-height children into a bounded container (via a scroll interaction). In order to bound the height of a ScrollView, either set the height of the view directly (discouraged) or make sure all parent views have bounded height. Forgetting to transfer <code>{flex: 1}</code> down the view stack can lead to errors here, which the element inspector makes easy to debug.</p>
|
||||
<p>Keep in mind that ScrollViews must have a bounded height in order to work, since they contain unbounded-height children into a bounded container (via a scroll interaction). In order to bound the height of a ScrollView, either set the height of the view directly (discouraged) or make sure all parent views have bounded height. Forgetting to transfer <code>{flex: 1}</code> down the view stack can lead to errors here, which the element inspector helps to debug.</p>
|
||||
<p>Doesn't yet support other contained responders from blocking this scroll view from becoming the responder.</p>
|
||||
<h3><a class="anchor" aria-hidden="true" id="props"></a><a href="#props" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Props</h3>
|
||||
<ul>
|
||||
|
||||
@@ -69,7 +69,7 @@
|
||||
}
|
||||
});
|
||||
</script></nav></div><div class="container mainContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/facebook/react-native-website/blob/master/docs/textinput.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 class="postHeaderTitle">TextInput</h1></header><article><div><span><p>A foundational component for inputting text into the app via a keyboard. Props provide configurability for several features, such as auto-correction, auto-capitalization, placeholder text, and different keyboard types, such as a numeric keypad.</p>
|
||||
<p>The simplest use case is to plop down a <code>TextInput</code> and subscribe to the <code>onChangeText</code> events to read the user input. There are also other events, such as <code>onSubmitEditing</code> and <code>onFocus</code> that can be subscribed to. A simple example:</p>
|
||||
<p>The simplest use case is to plop down a <code>TextInput</code> and subscribe to the <code>onChangeText</code> events to read the user input. There are also other events, such as <code>onSubmitEditing</code> and <code>onFocus</code> that can be subscribed to. For example:</p>
|
||||
<pre><code class="hljs"> <TextInput
|
||||
style={{<span class="hljs-built_in">height</span>: <span class="hljs-number">40</span>, borderColor: <span class="hljs-string">'gray'</span>, borderWidth: <span class="hljs-number">1</span>}}
|
||||
onChangeText={(<span class="hljs-built_in">text</span>) => <span class="hljs-keyword">this</span>.setState({<span class="hljs-built_in">text</span>})}
|
||||
@@ -175,7 +175,7 @@
|
||||
</table>
|
||||
<hr>
|
||||
<h3><a class="anchor" aria-hidden="true" id="defaultvalue"></a><a href="#defaultvalue" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a><code>defaultValue</code></h3>
|
||||
<p>Provides an initial value that will change when the user starts typing. Useful for simple use-cases where you don't want to deal with listening to events and updating the value prop to keep the controlled state in sync.</p>
|
||||
<p>Provides an initial value that will change when the user starts typing. Useful for use-cases where you don't want to deal with listening to events and updating the value prop to keep the controlled state in sync.</p>
|
||||
<table>
|
||||
<thead>
|
||||
<tr><th>Type</th><th>Required</th></tr>
|
||||
@@ -368,7 +368,7 @@
|
||||
</table>
|
||||
<hr>
|
||||
<h3><a class="anchor" aria-hidden="true" id="value"></a><a href="#value" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a><code>value</code></h3>
|
||||
<p>The value to show for the text input. TextInput is a controlled component, which means the native value will be forced to match this value prop if provided. For most uses this works great, but in some cases this may cause flickering - one common cause is preventing edits by keeping value the same. In addition to simply setting the same value, either set <code>editable={false}</code>, or set/update <code>maxLength</code> to prevent unwanted edits without flicker.</p>
|
||||
<p>The value to show for the text input. TextInput is a controlled component, which means the native value will be forced to match this value prop if provided. For most uses this works great, but in some cases this may cause flickering - one common cause is preventing edits by keeping value the same. In addition to setting the same value, either set <code>editable={false}</code>, or set/update <code>maxLength</code> to prevent unwanted edits without flicker.</p>
|
||||
<table>
|
||||
<thead>
|
||||
<tr><th>Type</th><th>Required</th></tr>
|
||||
|
||||
@@ -69,7 +69,7 @@
|
||||
}
|
||||
});
|
||||
</script></nav></div><div class="container mainContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/facebook/react-native-website/blob/master/docs/textinput.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 class="postHeaderTitle">TextInput</h1></header><article><div><span><p>A foundational component for inputting text into the app via a keyboard. Props provide configurability for several features, such as auto-correction, auto-capitalization, placeholder text, and different keyboard types, such as a numeric keypad.</p>
|
||||
<p>The simplest use case is to plop down a <code>TextInput</code> and subscribe to the <code>onChangeText</code> events to read the user input. There are also other events, such as <code>onSubmitEditing</code> and <code>onFocus</code> that can be subscribed to. A simple example:</p>
|
||||
<p>The simplest use case is to plop down a <code>TextInput</code> and subscribe to the <code>onChangeText</code> events to read the user input. There are also other events, such as <code>onSubmitEditing</code> and <code>onFocus</code> that can be subscribed to. For example:</p>
|
||||
<pre><code class="hljs"> <TextInput
|
||||
style={{<span class="hljs-built_in">height</span>: <span class="hljs-number">40</span>, borderColor: <span class="hljs-string">'gray'</span>, borderWidth: <span class="hljs-number">1</span>}}
|
||||
onChangeText={(<span class="hljs-built_in">text</span>) => <span class="hljs-keyword">this</span>.setState({<span class="hljs-built_in">text</span>})}
|
||||
@@ -175,7 +175,7 @@
|
||||
</table>
|
||||
<hr>
|
||||
<h3><a class="anchor" aria-hidden="true" id="defaultvalue"></a><a href="#defaultvalue" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a><code>defaultValue</code></h3>
|
||||
<p>Provides an initial value that will change when the user starts typing. Useful for simple use-cases where you don't want to deal with listening to events and updating the value prop to keep the controlled state in sync.</p>
|
||||
<p>Provides an initial value that will change when the user starts typing. Useful for use-cases where you don't want to deal with listening to events and updating the value prop to keep the controlled state in sync.</p>
|
||||
<table>
|
||||
<thead>
|
||||
<tr><th>Type</th><th>Required</th></tr>
|
||||
@@ -368,7 +368,7 @@
|
||||
</table>
|
||||
<hr>
|
||||
<h3><a class="anchor" aria-hidden="true" id="value"></a><a href="#value" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a><code>value</code></h3>
|
||||
<p>The value to show for the text input. TextInput is a controlled component, which means the native value will be forced to match this value prop if provided. For most uses this works great, but in some cases this may cause flickering - one common cause is preventing edits by keeping value the same. In addition to simply setting the same value, either set <code>editable={false}</code>, or set/update <code>maxLength</code> to prevent unwanted edits without flicker.</p>
|
||||
<p>The value to show for the text input. TextInput is a controlled component, which means the native value will be forced to match this value prop if provided. For most uses this works great, but in some cases this may cause flickering - one common cause is preventing edits by keeping value the same. In addition to setting the same value, either set <code>editable={false}</code>, or set/update <code>maxLength</code> to prevent unwanted edits without flicker.</p>
|
||||
<table>
|
||||
<thead>
|
||||
<tr><th>Type</th><th>Required</th></tr>
|
||||
|
||||
@@ -1,4 +1,4 @@
|
||||
<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Animated · React Native</title><meta name="viewport" content="width=device-width"/><meta name="generator" content="Docusaurus"/><meta name="description" content="Animations are an important part of modern UX, and the `Animated` library is designed to make them fluid, powerful, and easy to build and maintain."/><meta name="docsearch:version" content="0.17"/><meta name="docsearch:language" content="en"/><meta property="og:title" content="Animated · React Native"/><meta property="og:type" content="website"/><meta property="og:url" content="https://facebook.github.io/react-native/"/><meta property="og:description" content="Animations are an important part of modern UX, and the `Animated` library is designed to make them fluid, powerful, and easy to build and maintain."/><meta name="twitter:card" content="summary"/><link rel="shortcut icon" href="/react-native/img/favicon.ico"/><link rel="stylesheet" href="https://cdn.jsdelivr.net/docsearch.js/1/docsearch.min.css"/><link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/solarized-dark.min.css"/><link rel="alternate" type="application/atom+xml" href="https://facebook.github.io/react-native/blog/atom.xml" title="React Native Blog ATOM Feed"/><link rel="alternate" type="application/rss+xml" href="https://facebook.github.io/react-native/blog/feed.xml" title="React Native Blog RSS Feed"/><script>
|
||||
<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Animated · React Native</title><meta name="viewport" content="width=device-width"/><meta name="generator" content="Docusaurus"/><meta name="description" content="Animations are an important part of modern UX, and the `Animated` library is designed to make them fluid, powerful, and possible to build and maintain."/><meta name="docsearch:version" content="0.17"/><meta name="docsearch:language" content="en"/><meta property="og:title" content="Animated · React Native"/><meta property="og:type" content="website"/><meta property="og:url" content="https://facebook.github.io/react-native/"/><meta property="og:description" content="Animations are an important part of modern UX, and the `Animated` library is designed to make them fluid, powerful, and possible to build and maintain."/><meta name="twitter:card" content="summary"/><link rel="shortcut icon" href="/react-native/img/favicon.ico"/><link rel="stylesheet" href="https://cdn.jsdelivr.net/docsearch.js/1/docsearch.min.css"/><link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/solarized-dark.min.css"/><link rel="alternate" type="application/atom+xml" href="https://facebook.github.io/react-native/blog/atom.xml" title="React Native Blog ATOM Feed"/><link rel="alternate" type="application/rss+xml" href="https://facebook.github.io/react-native/blog/feed.xml" title="React Native Blog RSS Feed"/><script>
|
||||
(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
|
||||
(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
|
||||
m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
|
||||
@@ -68,7 +68,7 @@
|
||||
};
|
||||
}
|
||||
});
|
||||
</script></nav></div><div class="container mainContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/facebook/react-native-website/blob/master/docs/animated.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 class="postHeaderTitle">Animated</h1></header><article><div><span><p>Animations are an important part of modern UX, and the <code>Animated</code> library is designed to make them fluid, powerful, and easy to build and maintain.</p>
|
||||
</script></nav></div><div class="container mainContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/facebook/react-native-website/blob/master/docs/animated.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 class="postHeaderTitle">Animated</h1></header><article><div><span><p>Animations are an important part of modern UX, and the <code>Animated</code> library is designed to make them fluid, powerful, and possible to build and maintain.</p>
|
||||
<p>The simplest workflow is to create an <code>Animated.Value</code>, hook it up to one or more style attributes of an animated component, and then drive updates either via animations, such as <code>Animated.timing</code>, or by hooking into gestures like panning or scolling via <code>Animated.event</code>. <code>Animated.Value</code> can also bind to props other than style, and can be interpolated as well. Here is a basic example of a container view that will fade in when it's mounted:</p>
|
||||
<pre><code class="hljs css language-jsx"><span class="token keyword">class</span> <span class="token class-name">FadeInView</span> <span class="token keyword">extends</span> <span class="token class-name">React<span class="token punctuation">.</span>Component</span> <span class="token punctuation">{</span>
|
||||
<span class="token function">constructor</span><span class="token punctuation">(</span><span class="token parameter">props</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
|
||||
@@ -96,12 +96,12 @@
|
||||
<span class="token punctuation">}</span>
|
||||
<span class="token punctuation">}</span>
|
||||
</code></pre>
|
||||
<p>Note that only animatable components can be animated. <code>View</code>, <code>Text</code>, and <code>Image</code> are already provided, and you can create custom ones with <code>createAnimatedComponent</code>. These special components do the magic of binding the animated values to the properties, and do targetted native updates to avoid the cost of the react render and reconciliation process on every frame. They also handle cleanup on unmount so they are safe by default.</p>
|
||||
<p>Note that only animatable components can be animated. <code>View</code>, <code>Text</code>, and <code>Image</code> are already provided, and you can create custom ones with <code>createAnimatedComponent</code>. These particular components do the magic of binding the animated values to the properties, and do targetted native updates to avoid the cost of the react render and reconciliation process on every frame. They also handle cleanup on unmount so they are safe by default.</p>
|
||||
<p>Animations are heavily configurable. Custom and pre-defined easing functions, delays, durations, decay factors, spring constants, and more can all be tweaked depending on the type of animation.</p>
|
||||
<p>A single <code>Animated.Value</code> can drive any number of properties, and each property can be run through an interpolation first. An interpolation maps input ranges to output ranges, typically using a linear interpolation but also supports easing functions. By default, it will extrapolate the curve beyond the ranges given, but you can also have it clamp the output value.</p>
|
||||
<p>For example, you may want to think about your <code>Animated.Value</code> as going from 0 to 1, but animate the position from 150px to 0px and the opacity from 0 to</p>
|
||||
<ol>
|
||||
<li>This can easily be done by modifying <code>style</code> in the example above like so:</li>
|
||||
<li>This could be done by modifying <code>style</code> in the example above like so:</li>
|
||||
</ol>
|
||||
<pre><code class="hljs css language-jsx"> 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 keyword">this</span><span class="token punctuation">.</span>state<span class="token punctuation">.</span>fadeAnim<span class="token punctuation">,</span> <span class="token comment">// Binds directly</span>
|
||||
@@ -113,7 +113,7 @@
|
||||
<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>
|
||||
</code></pre>
|
||||
<p>Animations can also be combined in complex ways using composition functions such as <code>sequence</code> and <code>parallel</code>, and can also be chained together simply by setting the <code>toValue</code> of one animation to be another <code>Animated.Value</code>.</p>
|
||||
<p>Animations can also be combined in complex ways using composition functions such as <code>sequence</code> and <code>parallel</code>, and can also be chained together by setting the <code>toValue</code> of one animation to be another <code>Animated.Value</code>.</p>
|
||||
<p><code>Animated.ValueXY</code> is handy for 2D animations, like panning, and there are other helpful additions like <code>setOffset</code> and <code>getLayout</code> to aid with typical interaction patterns, like drag-and-drop.</p>
|
||||
<p>You can see more example usage in <code>AnimationExample.js</code>, the Gratuitous Animation App, and <a href="http://facebook.github.io/react-native/animations.md">Animations documentation guide</a>.</p>
|
||||
<p>Note that <code>Animated</code> is designed to be fully serializable so that animations can be run in a high performace way, independent of the normal JavaScript event loop. This does influence the API, so keep that in mind when it seems a little trickier to do something compared to a fully synchronous system. Checkout <code>Animated.Value.addListener</code> as a way to work around some of these limitations, but use it sparingly since it might have performance implications in the future.</p>
|
||||
|
||||
@@ -1,4 +1,4 @@
|
||||
<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Animated · React Native</title><meta name="viewport" content="width=device-width"/><meta name="generator" content="Docusaurus"/><meta name="description" content="Animations are an important part of modern UX, and the `Animated` library is designed to make them fluid, powerful, and easy to build and maintain."/><meta name="docsearch:version" content="0.17"/><meta name="docsearch:language" content="en"/><meta property="og:title" content="Animated · React Native"/><meta property="og:type" content="website"/><meta property="og:url" content="https://facebook.github.io/react-native/"/><meta property="og:description" content="Animations are an important part of modern UX, and the `Animated` library is designed to make them fluid, powerful, and easy to build and maintain."/><meta name="twitter:card" content="summary"/><link rel="shortcut icon" href="/react-native/img/favicon.ico"/><link rel="stylesheet" href="https://cdn.jsdelivr.net/docsearch.js/1/docsearch.min.css"/><link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/solarized-dark.min.css"/><link rel="alternate" type="application/atom+xml" href="https://facebook.github.io/react-native/blog/atom.xml" title="React Native Blog ATOM Feed"/><link rel="alternate" type="application/rss+xml" href="https://facebook.github.io/react-native/blog/feed.xml" title="React Native Blog RSS Feed"/><script>
|
||||
<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Animated · React Native</title><meta name="viewport" content="width=device-width"/><meta name="generator" content="Docusaurus"/><meta name="description" content="Animations are an important part of modern UX, and the `Animated` library is designed to make them fluid, powerful, and possible to build and maintain."/><meta name="docsearch:version" content="0.17"/><meta name="docsearch:language" content="en"/><meta property="og:title" content="Animated · React Native"/><meta property="og:type" content="website"/><meta property="og:url" content="https://facebook.github.io/react-native/"/><meta property="og:description" content="Animations are an important part of modern UX, and the `Animated` library is designed to make them fluid, powerful, and possible to build and maintain."/><meta name="twitter:card" content="summary"/><link rel="shortcut icon" href="/react-native/img/favicon.ico"/><link rel="stylesheet" href="https://cdn.jsdelivr.net/docsearch.js/1/docsearch.min.css"/><link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/solarized-dark.min.css"/><link rel="alternate" type="application/atom+xml" href="https://facebook.github.io/react-native/blog/atom.xml" title="React Native Blog ATOM Feed"/><link rel="alternate" type="application/rss+xml" href="https://facebook.github.io/react-native/blog/feed.xml" title="React Native Blog RSS Feed"/><script>
|
||||
(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
|
||||
(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
|
||||
m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
|
||||
@@ -68,7 +68,7 @@
|
||||
};
|
||||
}
|
||||
});
|
||||
</script></nav></div><div class="container mainContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/facebook/react-native-website/blob/master/docs/animated.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 class="postHeaderTitle">Animated</h1></header><article><div><span><p>Animations are an important part of modern UX, and the <code>Animated</code> library is designed to make them fluid, powerful, and easy to build and maintain.</p>
|
||||
</script></nav></div><div class="container mainContainer"><div class="wrapper"><div class="post"><header class="postHeader"><a class="edit-page-link button" href="https://github.com/facebook/react-native-website/blob/master/docs/animated.md" target="_blank" rel="noreferrer noopener">Edit</a><h1 class="postHeaderTitle">Animated</h1></header><article><div><span><p>Animations are an important part of modern UX, and the <code>Animated</code> library is designed to make them fluid, powerful, and possible to build and maintain.</p>
|
||||
<p>The simplest workflow is to create an <code>Animated.Value</code>, hook it up to one or more style attributes of an animated component, and then drive updates either via animations, such as <code>Animated.timing</code>, or by hooking into gestures like panning or scolling via <code>Animated.event</code>. <code>Animated.Value</code> can also bind to props other than style, and can be interpolated as well. Here is a basic example of a container view that will fade in when it's mounted:</p>
|
||||
<pre><code class="hljs css language-jsx"><span class="token keyword">class</span> <span class="token class-name">FadeInView</span> <span class="token keyword">extends</span> <span class="token class-name">React<span class="token punctuation">.</span>Component</span> <span class="token punctuation">{</span>
|
||||
<span class="token function">constructor</span><span class="token punctuation">(</span><span class="token parameter">props</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
|
||||
@@ -96,12 +96,12 @@
|
||||
<span class="token punctuation">}</span>
|
||||
<span class="token punctuation">}</span>
|
||||
</code></pre>
|
||||
<p>Note that only animatable components can be animated. <code>View</code>, <code>Text</code>, and <code>Image</code> are already provided, and you can create custom ones with <code>createAnimatedComponent</code>. These special components do the magic of binding the animated values to the properties, and do targetted native updates to avoid the cost of the react render and reconciliation process on every frame. They also handle cleanup on unmount so they are safe by default.</p>
|
||||
<p>Note that only animatable components can be animated. <code>View</code>, <code>Text</code>, and <code>Image</code> are already provided, and you can create custom ones with <code>createAnimatedComponent</code>. These particular components do the magic of binding the animated values to the properties, and do targetted native updates to avoid the cost of the react render and reconciliation process on every frame. They also handle cleanup on unmount so they are safe by default.</p>
|
||||
<p>Animations are heavily configurable. Custom and pre-defined easing functions, delays, durations, decay factors, spring constants, and more can all be tweaked depending on the type of animation.</p>
|
||||
<p>A single <code>Animated.Value</code> can drive any number of properties, and each property can be run through an interpolation first. An interpolation maps input ranges to output ranges, typically using a linear interpolation but also supports easing functions. By default, it will extrapolate the curve beyond the ranges given, but you can also have it clamp the output value.</p>
|
||||
<p>For example, you may want to think about your <code>Animated.Value</code> as going from 0 to 1, but animate the position from 150px to 0px and the opacity from 0 to</p>
|
||||
<ol>
|
||||
<li>This can easily be done by modifying <code>style</code> in the example above like so:</li>
|
||||
<li>This could be done by modifying <code>style</code> in the example above like so:</li>
|
||||
</ol>
|
||||
<pre><code class="hljs css language-jsx"> 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 keyword">this</span><span class="token punctuation">.</span>state<span class="token punctuation">.</span>fadeAnim<span class="token punctuation">,</span> <span class="token comment">// Binds directly</span>
|
||||
@@ -113,7 +113,7 @@
|
||||
<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>
|
||||
</code></pre>
|
||||
<p>Animations can also be combined in complex ways using composition functions such as <code>sequence</code> and <code>parallel</code>, and can also be chained together simply by setting the <code>toValue</code> of one animation to be another <code>Animated.Value</code>.</p>
|
||||
<p>Animations can also be combined in complex ways using composition functions such as <code>sequence</code> and <code>parallel</code>, and can also be chained together by setting the <code>toValue</code> of one animation to be another <code>Animated.Value</code>.</p>
|
||||
<p><code>Animated.ValueXY</code> is handy for 2D animations, like panning, and there are other helpful additions like <code>setOffset</code> and <code>getLayout</code> to aid with typical interaction patterns, like drag-and-drop.</p>
|
||||
<p>You can see more example usage in <code>AnimationExample.js</code>, the Gratuitous Animation App, and <a href="http://facebook.github.io/react-native/animations.md">Animations documentation guide</a>.</p>
|
||||
<p>Note that <code>Animated</code> is designed to be fully serializable so that animations can be run in a high performace way, independent of the normal JavaScript event loop. This does influence the API, so keep that in mind when it seems a little trickier to do something compared to a fully synchronous system. Checkout <code>Animated.Value.addListener</code> as a way to work around some of these limitations, but use it sparingly since it might have performance implications in the future.</p>
|
||||
|
||||
Reference in New Issue
Block a user