165 lines
7.4 KiB
HTML
165 lines
7.4 KiB
HTML
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="utf-8">
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<meta http-equiv="X-UA-Compatible" content="IE=edge">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<meta name="description" content="API docs for the build method from the Button class, for the Dart programming language.">
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<title>build method - Button class - uiComponents library - Dart API</title>
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<!-- required because all the links are pseudo-absolute -->
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<base href="../..">
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<link href="https://fonts.googleapis.com/css?family=Source+Code+Pro:500,400i,400,300|Source+Sans+Pro:400,300,700" rel="stylesheet">
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<link rel="stylesheet" href="static-assets/github.css">
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<link rel="stylesheet" href="static-assets/styles.css">
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<link rel="icon" href="static-assets/favicon.png">
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</head>
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<body>
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<div id="overlay-under-drawer"></div>
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<header id="title">
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<button id="sidenav-left-toggle" type="button"> </button>
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<ol class="breadcrumbs gt-separated dark hidden-xs">
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<li><a href="index.html">touch_demonstrator</a></li>
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<li><a href="ui_home_uiComponents/ui_home_uiComponents-library.html">uiComponents</a></li>
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<li><a href="ui_home_uiComponents/Button-class.html">Button</a></li>
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<li class="self-crumb">build method</li>
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</ol>
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<div class="self-name">build</div>
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<form class="search navbar-right" role="search">
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<input type="text" id="search-box" autocomplete="off" disabled class="form-control typeahead" placeholder="Loading search...">
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</form>
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</header>
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<main>
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<div class="col-xs-6 col-sm-3 col-md-2 sidebar sidebar-offcanvas-left">
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<h5>Button class</h5>
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<ol>
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<li class="section-title"><a href="ui_home_uiComponents/Button-class.html#constructors">Constructors</a></li>
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<li><a href="ui_home_uiComponents/Button/Button.html">Button</a></li>
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<li class="section-title inherited">
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<a href="ui_home_uiComponents/Button-class.html#instance-properties">Properties</a>
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</li>
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<li class="inherited"><a href="ui_home_uiComponents/Button/hashCode.html">hashCode</a></li>
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<li class="inherited"><a href="ui_home_uiComponents/Button/key.html">key</a></li>
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<li class="inherited"><a href="ui_home_uiComponents/Button/runtimeType.html">runtimeType</a></li>
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<li class="section-title"><a href="ui_home_uiComponents/Button-class.html#instance-methods">Methods</a></li>
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<li><a href="ui_home_uiComponents/Button/build.html">build</a></li>
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<li class="inherited"><a href="ui_home_uiComponents/Button/createElement.html">createElement</a></li>
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<li class="inherited"><a href="ui_home_uiComponents/Button/debugDescribeChildren.html">debugDescribeChildren</a></li>
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<li class="inherited"><a href="ui_home_uiComponents/Button/debugFillProperties.html">debugFillProperties</a></li>
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<li class="inherited"><a href="ui_home_uiComponents/Button/noSuchMethod.html">noSuchMethod</a></li>
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<li class="inherited"><a href="ui_home_uiComponents/Button/toDiagnosticsNode.html">toDiagnosticsNode</a></li>
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<li class="inherited"><a href="ui_home_uiComponents/Button/toString.html">toString</a></li>
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<li class="inherited"><a href="ui_home_uiComponents/Button/toStringDeep.html">toStringDeep</a></li>
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<li class="inherited"><a href="ui_home_uiComponents/Button/toStringShallow.html">toStringShallow</a></li>
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<li class="inherited"><a href="ui_home_uiComponents/Button/toStringShort.html">toStringShort</a></li>
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<li class="section-title inherited"><a href="ui_home_uiComponents/Button-class.html#operators">Operators</a></li>
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<li class="inherited"><a href="ui_home_uiComponents/Button/operator_equals.html">operator ==</a></li>
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</ol>
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</div><!--/.sidebar-offcanvas-->
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<div class="col-xs-12 col-sm-9 col-md-8 main-content">
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<h1>build method</h1>
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<section class="multi-line-signature">
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<div>
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<ol class="annotation-list">
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<li>@override</li>
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</ol>
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</div>
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<span class="returntype">Widget</span>
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<span class="name ">build</span>
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(<wbr><span class="parameter" id="build-param-context"><span class="type-annotation">BuildContext</span> <span class="parameter-name">context</span></span>)
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</section>
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<section class="desc markdown">
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<p>Describes the part of the user interface represented by this widget.</p>
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<p>The framework calls this method when this widget is inserted into the
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tree in a given <code>BuildContext</code> and when the dependencies of this widget
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change (e.g., an <code>InheritedWidget</code> referenced by this widget changes).</p>
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<p>The framework replaces the subtree below this widget with the widget
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returned by this method, either by updating the existing subtree or by
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removing the subtree and inflating a new subtree, depending on whether the
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widget returned by this method can update the root of the existing
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subtree, as determined by calling <code>Widget.canUpdate</code>.</p>
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<p>Typically implementations return a newly created constellation of widgets
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that are configured with information from this widget's constructor and
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from the given <code>BuildContext</code>.</p>
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<p>The given <code>BuildContext</code> contains information about the location in the
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tree at which this widget is being built. For example, the context
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provides the set of inherited widgets for this location in the tree. A
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given widget might be built with multiple different <code>BuildContext</code>
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arguments over time if the widget is moved around the tree or if the
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widget is inserted into the tree in multiple places at once.</p>
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<p>The implementation of this method must only depend on:</p><ul><li>the fields of the widget, which themselves must not change over time,
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and</li><li>any ambient state obtained from the <code>context</code> using
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<code>BuildContext.inheritFromWidgetOfExactType</code>.</li></ul>
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<p>If a widget's <a href="ui_home_uiComponents/Button/build.html">build</a> method is to depend on anything else, use a
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<code>StatefulWidget</code> instead.</p>
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<p>See also:</p><ul><li>The discussion on performance considerations at <code>StatelessWidget</code>.</li></ul>
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</section>
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<section class="summary source-code" id="source">
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<h2><span>Implementation</span> </h2>
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<pre class="language-dart"><code class="language-dart">@override
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Widget build(BuildContext context) {
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return Hero(
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tag: 'SearchHero',
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child: Padding(
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padding: const EdgeInsets.all(8.0),
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child: RaisedButton(
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color: Theme.of(context).accentColor,
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shape: StadiumBorder(),
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onPressed: () {
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Navigator.push(
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context,
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NoAnimationMaterialPageRoute(
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builder: (context) =>
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PageTouchPoints(title: 'TouchPoints')));
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},
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child: Text(
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'Search and Connect Touchpad',
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style: TextStyle(color: Colors.white),
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),
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),
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),
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);
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}</code></pre>
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</section>
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</div> <!-- /.main-content -->
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<div class="col-xs-6 col-sm-6 col-md-2 sidebar sidebar-offcanvas-right">
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</div><!--/.sidebar-offcanvas-->
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</main>
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<footer>
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<span class="no-break">
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touch_demonstrator 1.0.0+1
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</span>
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</footer>
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<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
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<script src="static-assets/typeahead.bundle.min.js"></script>
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<script src="static-assets/highlight.pack.js"></script>
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<script src="static-assets/URI.js"></script>
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<script src="static-assets/script.js"></script>
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</body>
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</html>
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