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How to write a custom responsive TextField widget in Flutter

 TextField widget in Flutter

Creating a custom responsive TextField widget in Flutter involves using a combination of Flutter widgets and media query information to adjust the TextField size based on the screen size. Here's a basic example of how you can create a custom responsive TextField widget:


import 'package:flutter/material.dart';

class ResponsiveTextField extends StatelessWidget {
  final String hintText;
  final double minWidth;
  final double maxWidth;

  ResponsiveTextField({
    required this.hintText,
    required this.minWidth,
    required this.maxWidth,
  });

  @override
  Widget build(BuildContext context) {
    double screenWidth = MediaQuery.of(context).size.width;
    double scaleFactor = screenWidth / 375.0; // Assuming the base screen width is 375.0 (adjust as needed)

    double dynamicWidth = max(minWidth, min(maxWidth, 200.0 * scaleFactor)); // Adjust the initial width as needed

    return Container(
      width: dynamicWidth,
      child: TextField(
        decoration: InputDecoration(
          hintText: hintText,
          border: OutlineInputBorder(),
        ),
      ),
    );
  }
}

//****************************************************************

//main() function

void main() {
  runApp(MyApp());
}

//****************************************************************

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('Responsive TextField Example'),
        ),
        body: Center(
          child: ResponsiveTextField(
            hintText: 'Enter text here',
            minWidth: 100.0,
            maxWidth: 300.0,
          ),
        ),
      ),
    );
  }
}

*******************************************************************


In this example:

ResponsiveTextField is a custom widget that takes the hint text (hintText), a minimum width (minWidth), and a maximum width (maxWidth) as parameters.
Inside the build method, we use MediaQuery to get the current screen width.
We calculate a scaleFactor based on the assumption that the base screen width is 375.0. You may adjust this value depending on your design.
The dynamicWidth is calculated by multiplying the base width (200.0) by the scaleFactor. We ensure that the calculated width is within the specified minimum and maximum limits.
The TextField widget is wrapped in a Container with the calculated width.

You can customize this example based on your specific needs and adjust the scaling logic as necessary. Additionally, you may want to add more properties to the ResponsiveTextField class to handle other TextField properties or styling based on your requirements.


Thanks for reading the article ...



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