secure_numeric_keyboard 2.2.21

secure_numeric_keyboard Flutter plugin project.

Secure numeric keyboard to prevent KeyLogger attack and screen capture for web, app.

Screenshots

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Forked Proejct from flutter_secure_keyboard

This project was forked and developed flutter_secure_keyboard.

Getting started

To use this plugin, add secure_numeric_keyboard as a dependency in your pubspec.yaml file. For example:

dependencies:
  secure_numeric_keyboard: ^2.2.2

Examples

class WithNumericSecureKeyboardExample extends StatefulWidget {
  @override
  _WithNumericSecureKeyboardExampleState createState() => _WithNumericSecureKeyboardExampleState();
}

class _WithNumericSecureKeyboardExampleState extends State<WithNumericSecureKeyboardExample> {
  final _secureKeyboardController = SecureKeyboardController();

  final _passwordEditor = TextEditingController();
  final _passwordTextFieldFocusNode = FocusNode();

  final _pinCodeEditor = TextEditingController();
  final _pinCodeTextFieldFocusNode = FocusNode();

  @override
  Widget build(BuildContext context) {
    // Set the WithNumericSecureKeyboard widget as the top-level widget
    // in the build function so that the secure keyboard works properly.
    return GestureDetector(
      onTap: () {
        _secureKeyboardController.hide();
        FocusScope.of(context).unfocus();
      },
      child: WithNumericSecureKeyboard(
        controller: _secureKeyboardController,
        child: Scaffold(
            appBar: AppBar(title: Text('with_numeric_secure_keyboard_example')),
            resizeToAvoidBottomInset: false,
            backgroundColor: Colors.white,
            body: _buildContentView()
        ),
      ),
    );
  }

  Widget _buildContentView() {
    // We recommend using the ListView widget to prevent widget overflow.
    return ListView(
      padding: const EdgeInsets.all(8.0),
      children: [
        SizedBox(height: 32.0),
        _buildPinCodeTextField(),
        SizedBox(height: 120.0),
        _buildPasswordTextField(),
      ],
    );
  }

  Widget _buildPasswordTextField() {
    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        const Text('Password'),
        TextFormField(
          controller: _passwordEditor,
          focusNode: _passwordTextFieldFocusNode,
          // We recommended to set false to prevent the software keyboard from opening.
          enableInteractiveSelection: false,
          obscureText: true,
          autocorrect: false,
          enableSuggestions: false,
          onTap: () {

            _secureKeyboardController.show(
              focusNode: _passwordTextFieldFocusNode,
              initText: _passwordEditor.text,
              keyboardTheme: KeyboardTheme(
                showTopShadow: true,
              ),
              onCharCodesChanged: (List<int> charCodes) {
                _passwordEditor.text = String.fromCharCodes(charCodes);
              },
              // on
            );
          },
        ),
      ],
    );
  }

  Widget _buildPinCodeTextField() {
    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        const Text('PinCode'),
        TextFormField(
          controller: _pinCodeEditor,
          focusNode: _pinCodeTextFieldFocusNode,
          // We recommended to set false to prevent the software keyboard from opening.
          enableInteractiveSelection: false,
          // obscureText: true,

          autocorrect: false,
          enableSuggestions: false,
          onTap: () {
          },
        ),
      ],
    );
  }
}

Package

• WithNumericSecureKeyboard - A widget that implements a secure keyboard with controller.
• SecureKeyboardController - Controller to check or control the state of the secure keyboard.

Note: The parameters marked with an asterisk(*) are required.

WithNumericSecureKeyboard

Parameter	Description
controller*	Controller to control the secure keyboard.
child*	A child widget with a secure keyboard.
stringKeyColor	The color of the string key(alphanumeric, numeric..). Default value is const Color(0xFF313131).
actionKeyColor	The color of the action key(shift, backspace, clear..). Default value is const Color(0xFF222222).
doneKeyColor	The color of the done key. Default value is const Color(0xFF1C7CDC).
activatedKeyColor	The key color when the shift action key is activated. If the value is null, doneKeyColor is used.
keyTextStyle	The text style of the text inside the keyboard key. Default value is const TextStyle(color: Colors.white, fontSize: 17.0, fontWeight: FontWeight.w500).
screenCaptureDetectedAlertTitle	Security Alert title, only works on iOS.
screenCaptureDetectedAlertMessage	Security Alert message, only works on iOS
screenCaptureDetectedAlertActionTitle	Security Alert actionTitle, only works on iOS.

SecureKeyboardController

Function	Description
isShowing	Whether the secure keyboard is showing.
show	Show secure keyboard.
hide	Hide secure keyboard.

SecureKeyboardController.show()

Parameter	Description
type*	The type of the secure keyboard.
focusNode	The FocusNode that will receive focus on.
initText	The initial value of the input text.
inputTextLengthSymbol	The symbol to use when displaying the input text length.
obscuringCharacter	The secure character to hide the input text. Default value is •.
maxLength	The maximum length of text that can be entered.
alwaysCaps	Whether to always display uppercase characters. Default value is false.
obscureText	Whether to hide input text as secure characters. Default value is true.
shuffleNumericKey	Whether to shuffle the position of the numeric keys. Default value is true.
hideKeyInputMonitor	Whether to hide the key input monitor. Default value is false.
disableKeyBubble	Whether to disable the key bubble. Default value is false.
theme	You can style the keyboard Theme
onKeyPressed	Called when the key is pressed.
onCharCodesChanged	Called when the character codes changed.

KeyboardTheme

Parameter	Description
keypadHeight	The height of the keyboard's content. Default value is 270.0.
keyboardHeight	The height of the keyboard. Default value is 300.0.
keyRadius	The radius of the keyboard key. Default value is 4.0.
keySpacing	The spacing between keyboard keys. Default value is 1.2.
backgroundColor	The background color of the keyboard. Default value is Colors.white.
keyBackgroundColor	The background color of the keypad. Default value is Colors.white.
showTopShadow	Set whether to show the upper gradient of the keyboard or not Default value is false.
topShadowColor	The color of the gradient at the top of the keyboard const Color(0xFFF5F5F5).