Text field with a label

labeled_text_field.dart

import 'package:flutter/material.dart';
import 'package:flutter/semantics.dart';

void main() {
  runApp(MyApp());
  SemanticsBinding.instance.ensureSemantics();
}

// Shared label
const _fieldLabel = 'Enter Text';

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: Text('Text Field with Label')),
        body: Padding(
          padding: const EdgeInsets.all(16.0),
          child: Row(
            children: <Widget>[
              Text(_fieldLabel),  // the label is used here...
              SizedBox(width: 8),
              Expanded(
                child: Semantics(
                  label: _fieldLabel,  // ...and here
                  child: TextField(
                    decoration: InputDecoration(border: OutlineInputBorder()),
                  ),
                ),
              ),
            ],
          ),
        ),
      ),
    );
  }
}