How to Add Clear Button to TextField Input in Flutter

In this Google flutter code example we are going to learn how to add clear button to text field input in flutter.

The code is based on flutter version 1.0.0

Main.dart (App entry point)

import 'package:flutter/material.dart';
import 'week3/clear_textfield_task-18.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: 'Flutter Demo',
      debugShowCheckedModeBanner: false,
      theme: ThemeData(
        // This is the theme of your application.
        //
        // Try running your application with "flutter run". You'll see the
        // application has a blue toolbar. Then, without quitting the app, try
        // changing the primarySwatch below to Colors.green and then invoke
        // "hot reload" (press "r" in the console where you ran "flutter run",
        // or simply save your changes to "hot reload" in a Flutter IDE).
        // Notice that the counter didn't reset back to zero; the application
        // is not restarted.
        primarySwatch: Colors.blue,
      ),
      //home: MyHomePage(title: 'Flutter Demo Home Page'),
      home: ClearTextField(),
    );
  }
}
clear_textfield_task-18.dart
import 'package:flutter/material.dart';

class ClearTextField extends StatefulWidget {
  @override
  ClearTextFieldState createState() {
    return new ClearTextFieldState();
  }
}

class ClearTextFieldState extends State<ClearTextField> {
  TextEditingController _textFieldController = TextEditingController();

  _onClear() {
    setState(() {
      _textFieldController.text = "";
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Clear TextField Example'),
      ),
      body: Center(
        child: Padding(
          //Add padding around textfield
          padding: EdgeInsets.symmetric(horizontal: 25.0),
          child: TextField(
            controller: _textFieldController,
            decoration: InputDecoration(
              suffix: IconButton(
                icon: Icon(Icons.cancel),
                onPressed: _onClear,
              ),
            ),
          ),
        ),
      ),
    );
  }
}

flutter clear text field

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