Masterarbeit Richard Stern. Flutter App, sich mit einem Bluetooth-Gerät verbindet und Berührungen auf einem Sensor visualisiert.
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build.html 5.9KB

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  24. <li class="self-crumb">build method</li>
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  26. <div class="self-name">build</div>
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  33. <h5>ButtonOrAnimation class</h5>
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  35. <li class="section-title"><a href="ui_home_uiComponents/ButtonOrAnimation-class.html#constructors">Constructors</a></li>
  36. <li><a href="ui_home_uiComponents/ButtonOrAnimation/ButtonOrAnimation.html">ButtonOrAnimation</a></li>
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  38. <a href="ui_home_uiComponents/ButtonOrAnimation-class.html#instance-properties">Properties</a>
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  54. <li class="section-title inherited"><a href="ui_home_uiComponents/ButtonOrAnimation-class.html#operators">Operators</a></li>
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  58. <div class="col-xs-12 col-sm-9 col-md-8 main-content">
  59. <h1>build method</h1>
  60. <section class="multi-line-signature">
  61. <div>
  62. <ol class="annotation-list">
  63. <li>@override</li>
  64. </ol>
  65. </div>
  66. <span class="returntype">Widget</span>
  67. <span class="name ">build</span>
  68. (<wbr><span class="parameter" id="build-param-context"><span class="type-annotation">BuildContext</span> <span class="parameter-name">context</span></span>)
  69. </section>
  70. <section class="desc markdown">
  71. <p>Builds Button if the app is not connected to a touchpad or animates search progress.</p>
  72. </section>
  73. <section class="summary source-code" id="source">
  74. <h2><span>Implementation</span> </h2>
  75. <pre class="language-dart"><code class="language-dart">@override
  76. Widget build(BuildContext context) {
  77. final bBloc = BlocProvider.of(context).bluetoothBlocGetter;
  78. return StreamBuilder&lt;bool&gt;(
  79. stream: bBloc.isScanning$,
  80. initialData: false,
  81. builder: (BuildContext context, AsyncSnapshot&lt;bool&gt; snapshot) {
  82. if (snapshot.hasData) {
  83. return Container(
  84. margin: EdgeInsets.all(8.0),
  85. height: 50.0,
  86. width: 150.0,
  87. child: (snapshot.data == true)
  88. ? _scanAnimation()
  89. : _scanButton(context),
  90. );
  91. } else
  92. return Container();
  93. },
  94. );
  95. }</code></pre>
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