InputDecorator
sample.packages.flutter.lib.src.material.input_decorator.3071.
This example shows the differences between two TextField
widgets when
[suffixIconConstraints] is set to the default value and when one is not.
Note that [isDense] must be set to true to be able to set the constraints smaller than 48px.
If null, [BoxConstraints] with a minimum width and height of 48px is used.
import 'package:flutter/material.dart';
void main() => runApp(const MyApp());
class MyApp extends StatelessWidget {
const MyApp({Key? key}) : super(key: key);
static const String _title = 'Flutter Code Sample';
@override
Widget build(BuildContext context) {
return MaterialApp(
title: _title,
home: Scaffold(
appBar: AppBar(title: const Text(_title)),
body: const MyStatelessWidget(),
),
);
}
}
class MyStatelessWidget extends StatelessWidget {
const MyStatelessWidget({Key? key}) : super(key: key);
@override
Widget build(BuildContext context) {
return Padding(
padding: const EdgeInsets.symmetric(horizontal: 8.0),
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: const [
TextField(
decoration: InputDecoration(
hintText: 'Normal Icon Constraints',
suffixIcon: Icon(Icons.search),
),
),
SizedBox(height: 10),
TextField(
decoration: InputDecoration(
isDense: true,
hintText: 'Smaller Icon Constraints',
suffixIcon: Icon(Icons.search),
suffixIconConstraints: BoxConstraints(
minHeight: 32,
minWidth: 32,
),
),
),
],
),
);
}
}
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