239 lines
8.5 KiB
HTML
239 lines
8.5 KiB
HTML
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<meta name="description" content="API docs for the build method from the ReceiveScreenState class, for the Dart programming language.">
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<title>build method - ReceiveScreenState class - receive_screen library - Dart API</title>
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<header id="title">
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<span id="sidenav-left-toggle" class="material-symbols-outlined" role="button" tabindex="0">menu</span>
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<ol class="breadcrumbs gt-separated dark hidden-xs">
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<li><a href="../../index.html">flutter_test_gui</a></li>
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<li><a href="../../pages_receive_screen/pages_receive_screen-library.html">pages/receive_screen.dart</a></li>
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<li><a href="../../pages_receive_screen/ReceiveScreenState-class.html">ReceiveScreenState</a></li>
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<li class="self-crumb">build method</li>
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<div class="self-name">build</div>
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data-above-sidebar="pages_receive_screen/ReceiveScreenState-class-sidebar.html"
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data-below-sidebar="">
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<div>
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<h1><span class="kind-method">build</span> method
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</h1></div>
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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>@<a href="https://api.flutter.dev/flutter/dart-core/override-constant.html">override</a></li>
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</ol>
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</div>
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<span class="returntype"><a href="https://api.flutter.dev/flutter/widgets/Widget-class.html">Widget</a></span>
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<span class="name ">build</span>(<wbr><ol class="parameter-list"><li><span class="parameter" id="build-param-context"><span class="type-annotation"><a href="https://api.flutter.dev/flutter/widgets/BuildContext-class.html">BuildContext</a></span> <span class="parameter-name">context</span></span></li>
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</ol>)
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<div class="features"><span class="feature">override</span></div>
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</section>
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<section class="desc markdown">
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<p>Builds the scaffold for the receive screen.</p>
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<p>The scaffold contains a center widget that contains a column of widgets.
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The column contains a QR code scanner if <code>_showScanner</code> is true, otherwise
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it contains a text field for entering the transfer name. Below the text
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field is an elevated button for initiating the receive process.</p>
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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 Scaffold(
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backgroundColor: Constants.backColor,
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body: Center(
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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// If _showScanner is false, display a QR code icon that can be tapped
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// to start the QR code scanner.
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if (!_showScanner)
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GestureDetector(
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onTap: () {
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if (Platform.isIOS || Platform.isAndroid) {
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setState(() {
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_showScanner = true;
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});
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}
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},
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child: Container(
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width: 200,
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height: 200,
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decoration: const BoxDecoration(
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shape: BoxShape.circle,
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color: Constants.textColor,
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),
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child: const Center(
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child: Icon(
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Icons.qr_code,
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color: Constants.highlightColor,
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size: 100,
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),
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),
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),
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),
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// If _showScanner is true, display the QR code scanner.
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if (_showScanner)
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Container(
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width: MediaQuery.of(context).size.width * 0.8,
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height: MediaQuery.of(context).size.height * 0.5,
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decoration: BoxDecoration(
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color: Colors.white,
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borderRadius: BorderRadius.circular(16),
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),
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child: _buildQRScanner(),
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),
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// Add some spacing between the scanner and the text field.
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const SizedBox(height: 32),
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// Display a text field for entering the transfer name.
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Padding(
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padding: const EdgeInsets.symmetric(horizontal: 16),
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child: SizedBox(
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width: MediaQuery.of(context).size.width * 0.5,
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child: TextField(
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controller: myController,
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textAlign: TextAlign.center,
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style: const TextStyle(
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color: Constants.highlightColor,
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),
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onChanged: (value) {
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setState(() {
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inputValue = value;
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});
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},
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decoration: const InputDecoration(
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labelText: 'Enter Transfername',
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alignLabelWithHint: true,
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floatingLabelAlignment: FloatingLabelAlignment.center,
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labelStyle: TextStyle(color: Constants.textColor),
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enabledBorder: UnderlineInputBorder(
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borderSide: BorderSide(color: Constants.textColor),
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),
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focusedBorder: UnderlineInputBorder(
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borderSide: BorderSide(color: Constants.textColor),
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),
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),
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),
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),
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),
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// Add some spacing between the text field and the receive button.
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const SizedBox(height: 16),
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// Display an elevated button for initiating the receive process.
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ElevatedButton(
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style: ElevatedButton.styleFrom(
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backgroundColor: Constants.textColor,
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foregroundColor: Constants.backColor,
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shape: RoundedRectangleBorder(
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borderRadius: BorderRadius.circular(20),
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),
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),
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onPressed: () {
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loadSettings().then((_) => _startTransfer(appOrigin));
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},
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child: const Text('Receive'),
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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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<li><a href="../../index.html">flutter_test_gui</a></li>
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<li><a href="../../pages_receive_screen/pages_receive_screen-library.html">receive_screen</a></li>
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<li><a href="../../pages_receive_screen/ReceiveScreenState-class.html">ReceiveScreenState</a></li>
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<li class="self-crumb">build method</li>
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</ol>
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<h5>ReceiveScreenState class</h5>
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