auto_size_text_field 0.1.5

Flutter TextField widget that automatically resizes text field to fit perfectly within its bounds.

example/lib/main.dart

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

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Auto Size TextField Example',
      theme: ThemeData(
        primarySwatch: Colors.amber,
        visualDensity: VisualDensity.adaptivePlatformDensity,
      ),
      home: MyHomePage(title: 'Auto Size TextField Demo'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key key, this.title}) : super(key: key);
  final String title;

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            Text(
              'Fixed width (full width of parent\'s BoxConstraints)',
            ),
            Padding(
              padding: const EdgeInsets.symmetric(horizontal: 24),
              child: AutoSizeTextField(
                controller: TextEditingController(),
                minFontSize: 24,
                style: TextStyle(fontSize: 64),
              ),
            ),
            SizedBox(
              height: 48,
            ),
            Text(
              'Auto adjusted width based on contents',
            ),
            Padding(
              padding: const EdgeInsets.symmetric(horizontal: 24),
              child: AutoSizeTextField(
                textAlign: TextAlign.center,
                fullwidth: false,
                controller: TextEditingController(),
                minFontSize: 24,
                style: TextStyle(fontSize: 64),
              ),
            ),
            SizedBox(
              height: 48,
            ),
            Text('Auto adjusted width with hintText and minWidth'),
            Padding(
              padding: const EdgeInsets.symmetric(horizontal: 24),
              child: AutoSizeTextField(
                controller: TextEditingController(),
                decoration: InputDecoration(
                  hintText: 'Hint Text'
                ),
                fullwidth: false,
                minFontSize: 24,
                minWidth: 280,
                style: TextStyle(fontSize: 64),
                textAlign: TextAlign.center,
              ),
            )
          ],
        ),
      ), // This trailing comma makes auto-formattig nicer for build methods.
    );
  }
}