Numpad Picker for Flutter

showNumpadPicker is a Flutter widget that provides a clean and intuitive interface for numeric input via a modal bottom sheet. This widget is designed to mimic the functionality of showDatePicker, making it easy to collect fixed-length numeric inputs such as PIN codes, verification codes, or any other numeric data in your Flutter app.

Features

• Customizable Length: Specify the exact number of digits users can input, making it suitable for various use cases.
• Real-time Feedback: As users input digits, they are displayed dynamically, providing immediate feedback.
• Backspace Support: Includes a backspace button to allow easy correction of mistakes.
• Seamless Integration: Once the user confirms their input by pressing the "Done" button, the entered value is returned to the calling function, enabling easy integration with forms or other input fields.

Installation

Add this widget to your project by copying the provided code or integrating it into your own custom widget.

Usage

To use the showNumpadPicker, simply call the function with the desired length:

void _pickNumber(BuildContext context) async {
  final result = await showNumpadPicker(context, length: 4);
  if (result != null) {
    print("Selected number: $result");
  }
}