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MaterialApp(
home: SelectableRegion(
selectionControls: materialTextSelectionControls,
focusNode: _focusNode, // initialized to FocusNode()
child: Scaffold(
appBar: AppBar(title: const Text('Flutter Code Sample')),
body: ListView(
children: const <Widget>[
Text('Item 0', style: TextStyle(fontSize: 50.0)),
Text('Item 1', style: TextStyle(fontSize: 50.0)),
],
),
),
),
)
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DropdownButton<String>(
items: <String>['A', 'B', 'C', 'D'].map((String value) {
return DropdownMenuItem<String>(
value: value,
child: Text(value),
);
}).toList(),
onChanged: (_) {},
)