How to Bypass Captcha Using 2Captcha in Flutter Application?

A new open-source mobile UI framework called Flutter was created by Google to quickly create high-quality native interfaces for iOS and Android. Flutter is the primary tool for developing apps for Google Fuchsia and integrates with existing code. It is utilized by developers and organizations worldwide.

Compared to other cross-platform technologies as well as native development options, Flutter has certain distinctive advantages. Because of this, product owners, tech leads, and developers find it to be very enticing. These are Flutter’s main advantages.

Flutter’s cross-platform capabilities make it possible to create apps for both operating systems using the same codebase. But that’s not the only way using Flutter speeds up and streamlines the development process. It also has a well-known “hot reload” feature and quick restart, which lets you see updates in real-time without having to restart the program.

In Flutter, we can host a web app, but we need to secure it, hence it is best to include ReCAPTCHA in the flutter app. ReCAPTCHA is a highly important service when you want to protect your website from spam users

Advanced risk analysis techniques are used by ReCAPTCHA validation to distinguish between human and automated users. If the captcha detects any spam, it will issue a challenge to make sure you are a person ( a real user ).

Give your site a label to make it easier to find it. This can be a nickname or the URL of your website.

Then select reCAPTCHA V2. Please check the “I’m not a robot” box. The other choices cannot be used.

Enter your domain name. After entering your unique domain, click the plus sign. For any more custom domains linked to your website, repeat this procedure, leaving https:// off each time.

Click on Submit after accepting the Google reCAPTCHA terms of service.

Copy your Site Key and Secret Key, then paste them into a visible location where you want to do your code.

Now let’s start with the implementation of reCAPTCHA code.

In this project, we’ll pull an HTML page from the Assets directory and display it in our Flutter app.

Therefore, we’ll add a ReCAPTCHA check to the HTML page (index.html) and then display the index.html web page in our Flutter app.

We require authorization to access the internet since we are making internet calls to validate the captcha.

Go to the AndroidManifest.xml file to add the Internet permission.

create assets folder in the project directory and now in assets/webpages/ folder create a file & name it as index.html and copy paste below HTML code.

Paste your captcha site key in below code.

Now replace the below code in the main.dart file.

Create another file WelcomePage.dart in the lib folder and add the below code in it.

So, the implementation is done now try to run your project and get the output like below.

So, in this article, we had seen how to create an API key and use the reCaptcha code in a flutter. I hope you guys are enjoying this article.

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