The Textfield is frequently used in Android applications to collect user input, and we may access the data from the text field using TextEditingController.
In Flutter, the TextField widget allows users to enter text input. To retrieve the value entered by the user, you can leverage the TextEditingController class. In this article, we will explore the process of retrieving the value of a TextField in Flutter.
Users can enter text using the TextField widget. You can use the TextEditingController class to obtain the value that the user input.
In this post, we’ll examine how to retrieve a TextField’s value in Flutter.
Create a TextEditingController
To retrieve the value of a TextField, you need to associate it with a TextEditingController instance. Here’s how you can create a TextEditingController:
TextEditingController _controller = TextEditingController();
Assign the TextEditingController to the TextField
Next, you need to assign the TextEditingController to the controller property of the TextField. Here’s an example:
TextField( controller: _controller, // Other properties... )
Retrieve the TextField Value
To retrieve the value of the TextField, you can access the text property of the TextEditingController. Here’s an example of how you can retrieve the value:
String textFieldValue = _controller.text;
You can use the textFieldValue variable to access and manipulate the text entered by the user.
Example of Retrieving TextField Value
import 'package:flutter/material.dart';
class TextFieldValueScreen extends StatefulWidget {
@override
_TextFieldValueScreenState createState() => _TextFieldValueScreenState();
}
class _TextFieldValueScreenState extends State<TextFieldValueScreen> {
TextEditingController _controller = TextEditingController();
String _textFieldValue = '';
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Retrieving TextField Value'),
),
body: Padding(
padding: EdgeInsets.all(16.0),
child: Column(
children: [
TextField(
controller: _controller,
onChanged: (value) {
setState(() {
_textFieldValue = value; // Here, it is the value of Retrieving
});
},
),
SizedBox(height: 16.0),
Text('Retrieving TextField Value: $_textFieldValue'), // Display Retrieving Value
],
),
),
);
}
}
In this example, we create a stateful widget called TextFieldValueScreen that contains a TextField. The TextEditingController is assigned to the TextField’s controller property.
We also define a String variable called _textFieldValue to store the value of the TextField. We update this value in the onChanged callback of the TextField to reflect the latest user input.
Finally, we display the value of the TextField below the TextField itself using a Text widget.
By running this example, you can enter text in the TextField, and the value will be displayed dynamically as you type.
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