flutter textformfield border radius with code examples

Flutter is a framework used for creating mobile applications across different platforms. The framework is known for its portability and adaptability, making it a popular choice among developers. Flutter provides a range of widgets, including the TextFormField widget. The widget is used to create a form with text fields that allow users to input their information.

One of the essential features of Flutter's TextFormField widget is that it allows developers to customize its appearance. You can customize its border radius by using the 'InputDecoration' class. In this article, we will explore how to create a border-radius text field in Flutter using TextFormField.

First, let's start by creating a basic TextFormField widget.

TextFormField(
    decoration: InputDecoration(
        labelText: "Enter your name",
    ),
),

Now, let’s add a border radius to this TextFormField.

TextFormField(
    decoration: InputDecoration(
        labelText: "Enter your name",
        border: OutlineInputBorder(
          borderRadius: BorderRadius.circular(12.0),
        ),
    ),
),

In the above code, we have added a borderRadius parameter to the border property. The parameter takes a value of the 'BorderRadius' class, which is used to define the border radius of the TextFormField widget.

The above code will create a text field with rounded borders. The value that we have set in the above code for the borderRadius parameter is 12.0. This means that the widget will have a border radius of 12.0. You can adjust the value according to your preference.

If you want to customize the border color, you can use the borderSide property of the InputDecoration class.

TextFormField(
  decoration: InputDecoration(
      labelText: "Enter your name",
      enabledBorder: OutlineInputBorder(
        borderSide: BorderSide(
        color: Colors.green,
        width: 2.0
        ),
    ),
    focusedBorder: OutlineInputBorder(
        borderSide: BorderSide(
        color: Colors.blue,
        width: 2.0
        ),
    ),
    border: OutlineInputBorder(
          borderRadius: BorderRadius.circular(12.0),
      ),
  ),
),

In the above code, we have created two different border colors for the text field using the enableBorder and focusedBorder properties. The enabledBorder property specifies the border color when the TextFormField widget is not in focus, while the focusedBorder sets the color when the widget is in focus.

Creating a border-radius text field in Flutter is straightforward, and the customization options provided by the framework are vast. You can experiment with different border radius values, colors, and other properties to create unique and visually appealing text fields.

In conclusion, Flutter's TextFormField widget provides developers with the ability to create custom text fields with rounded borders using the same class of widgets. The framework makes it easy for developers to customize their app's appearance without having to write extensive code. With the examples provided in this article, you can get started on creating your own border-radius text fields in Flutter.

let me provide more details on the topics mentioned in the article:

Flutter:
Flutter is a free and open-source mobile application development framework created by Google. It allows developers to create high-performance, attractive, and fluid apps for Android, iOS, Windows, and the web using a single codebase in the Dart programming language. Flutter's unique feature is its widgets, which are complete with critical platform differences. As a result, developers can create adaptive and personalized experiences with ease. Flutter is widely used by developers worldwide to create mobile apps.

TextFormField Widget:
The TextFormField widget is a widget in Flutter that helps in the creation of a form with text fields where users can input their data. It is a robust widget that allows developers to customize the input decoration of the text field. The InputDecoration widget in the TextFormField is used to define how the text field should look when it is being edited and how it should look when it is disabled, read-only, or unfocused.

Border Radius:
A border-radius represents the curvature of the border of an object, such as a text field or a button. In Flutter, the border-radius can be set using the 'borderRadius' attribute of the 'BorderRadius' class. The BorderRadius.circular method takes a value as a parameter, which determines the amount of curvature to be applied to the border. A higher value means rounder corners, while a lower value means less rounded borders.

InputDecoration Class:
InputDecoration is a class in Flutter that helps developers in creating border decoration for widgets like the TextFormField. It allows developers to customize the appearance of the widget by setting attributes like border color, label text, border style, icon, and many more.

In conclusion, Flutter is a powerful mobile development framework that allows developers to create high-performance and visually appealing apps. The TextFormField widget is a crucial widget for creating forms and collecting user data. With the ability to customize border properties like the border-radius, you can create fantastic user interfaces that are both functional and visually appealing.

Popular questions

1. What is Flutter, and why is it a popular choice among developers?
   Answer: Flutter is a free and open-source mobile application development framework created by Google. It is a popular choice among developers because it is known for being portable and adaptable, which provides a streamlined app development process across multiple platforms.

2. What is a TextFormField widget in Flutter, and why is it essential?
   Answer: The TextFormField widget is a widget in Flutter that allows developers to create forms with text fields where users can input their data. It is essential because it gives developers the ability to customize the input decoration of the text field, which can impact the functionality and user experience of the app.

3. How can border-radius be added to a TextFormField widget in Flutter?
   Answer: Border-radius can be added to a TextFormField widget in Flutter by using the 'InputDecoration' class. The 'borderRadius' attribute of the 'BorderRadius' class can be set to a value that determines the amount of curvature to be applied to the border, resulting in a text field with rounded borders.

4. What is the purpose of the 'InputDecoration' class in Flutter?
   Answer: The 'InputDecoration' class in Flutter gives developers the ability to customize the appearance of widgets like the TextFormField. It allows developers to set attributes like border color, label text, border style, icon, and many more to create unique and visually appealing user interfaces.

5. What other properties can be customized when using the 'InputDecoration' class in Flutter?
   Answer: When using the 'InputDecoration' class in Flutter, developers can customize many properties of a widget, including border color, label text, border style, icon, error messages, hint text, and disabled border color. Additionally, the 'suffixIcon' and 'prefixIcon' properties can be used to add icons to a text field, enhancing the user experience.

Tag

FlutterFormFieldStyle