ar_captcha 1.2.8

Flutter plugin for integrating ARCaptcha, providing a secure and customizable captcha solution for Android, IOS, Web apps.

ar_captcha

A Flutter package to easily integrate ARCaptcha into your apps. It supports multiple display modes—dialog, screen, and modal bottom sheet—with a modern UI, smooth loader animations, and full customization options.

ARCaptcha is a privacy-friendly CAPTCHA solution designed to verify real users without intrusive challenges, providing a secure and user-friendly way to prevent bots and automated abuse. Ar Captcha pub.dev Package: https://pub.dev/packages/ar_captcha/ Official ARCaptcha service: https://arcaptcha.co/en/

Platform support:

• iOS
• Web
• Android

![ArCaptcha Demo]

Features

• ✅ Show captcha in Dialog, Screen, Modal Bottom Sheet, or Responsive Dialog
• Built-in loading animation
• Fully theme-aware (light/dark)
• Customizable size, color, and behavior
• Supports invisible and normal modes
• Clean success/error callback system
• Secure HTML + JS bridge with Flutter WebView
• Responsive UI for desktop/tablet/mobile

---

Installation

Add this to your pubspec.yaml:

dependencies:
  ar_captcha: ^last_version

Then run:

flutter pub get

Usage

import 'package:flutter/material.dart';
import 'package:ar_captcha/ar_captcha.dart';

class MyCaptchaScreen extends StatelessWidget {
  final ArCaptchaController _controller = ArCaptchaController(
    lang: 'en',
    theme: ThemeMode.light,
    siteKey: 'YOUR_SITE_KEY',
  );

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: Text("Captcha Example")),
      body: Center(
        child: ElevatedButton(
          onPressed: () {
            _controller.showCaptcha(
              context: context,
              params: CaptchaParams(
                mode: CaptchaType.dialog,
                onSuccess: (token) {
                  // The success function return captcha token key
                  debugPrint("Captcha success: $token");
                },
                onError: (error) {
                  // Return onErrorMessage that you gave in controller
                  debugPrint("Captcha failed: $error");
                },
              ),
            );
          },
          child: const Text("Show Captcha"),
        ),
      ),
    );
  }
}

Captcha Display Modes

• CaptchaType.dialog
• CaptchaType.screen
• CaptchaType.modalBottomSheet
• CaptchaType.responsiveDialog

Behavior Notes

• Dialog Mode

  • Fixed width & height
  • Good for desktop/tablet UX

• Screen Mode

  • Full page captcha experience

• Modal Bottom Sheet

  • Mobile-friendly UX
  • Uses custom bottom sheet wrapper

• Responsive Dialog (NEW)

  • Automatically adapts to screen size
  • Uses maxResponsiveDialogWidth
  • Best default for mixed platforms

API Reference

Parameter	Type	Description	Default
siteKey	String	Your ARCaptcha public site key	Required
lang	String	Language code (en, fa)	en
domain	String	App domain used by captcha service	localhost
theme	ThemeMode	Light or dark theme	light
color	Color	Primary UI color	Colors.black
dataSize	DataSize	normal or invisible mode	normal
errorPrint	int	Show error messages (0/1)	0
captchaHeight	double	Height of captcha container	550
captchaWidth	double	Width (dialog mode only)	550
onErrorMessage	String	Default error message	fallback string
dialogBarrierDismissible	bool	Allow closing dialog by tapping outside	true
maxResponsiveDialogWidth	double	Max width for responsive dialog	600