A simple and easy-to-use QR code scanner app built with Kotlin, Room DB, coroutines, and Google Code Scanner. The app allows users to scan QR codes using their phone's camera and provides a fast and secure scanning experience.
![](https://private-user-images.githubusercontent.com/89351750/252462779-afa2c566-b6b8-46b5-b949-81d087bdd66b.jpeg?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJnaXRodWIuY29tIiwiYXVkIjoicmF3LmdpdGh1YnVzZXJjb250ZW50LmNvbSIsImtleSI6ImtleTUiLCJleHAiOjE3MjU1OTUwMTksIm5iZiI6MTcyNTU5NDcxOSwicGF0aCI6Ii84OTM1MTc1MC8yNTI0NjI3NzktYWZhMmM1NjYtYjZiOC00NmI1LWI5NDktODFkMDg3YmRkNjZiLmpwZWc_WC1BbXotQWxnb3JpdGhtPUFXUzQtSE1BQy1TSEEyNTYmWC1BbXotQ3JlZGVudGlhbD1BS0lBVkNPRFlMU0E1M1BRSzRaQSUyRjIwMjQwOTA2JTJGdXMtZWFzdC0xJTJGczMlMkZhd3M0X3JlcXVlc3QmWC1BbXotRGF0ZT0yMDI0MDkwNlQwMzUxNTlaJlgtQW16LUV4cGlyZXM9MzAwJlgtQW16LVNpZ25hdHVyZT1hZWIxM2ZjZGQ5M2RmNjg0ZWQwYTFhODA5MjVmZWQ0MjJhMmRhOTFiOWQ5ZmQyZmU3NWQxN2ZhZGYzNzFlODk0JlgtQW16LVNpZ25lZEhlYWRlcnM9aG9zdCZhY3Rvcl9pZD0wJmtleV9pZD0wJnJlcG9faWQ9MCJ9.K1U-Hqj5fosO7Amg2pP8WE_YY5uMhcjin3AZvenknQM)
![](https://private-user-images.githubusercontent.com/89351750/252462774-11cdbf7e-76a7-4bf8-8908-f5234f11938d.jpeg?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJnaXRodWIuY29tIiwiYXVkIjoicmF3LmdpdGh1YnVzZXJjb250ZW50LmNvbSIsImtleSI6ImtleTUiLCJleHAiOjE3MjU1OTUwMTksIm5iZiI6MTcyNTU5NDcxOSwicGF0aCI6Ii84OTM1MTc1MC8yNTI0NjI3NzQtMTFjZGJmN2UtNzZhNy00YmY4LTg5MDgtZjUyMzRmMTE5MzhkLmpwZWc_WC1BbXotQWxnb3JpdGhtPUFXUzQtSE1BQy1TSEEyNTYmWC1BbXotQ3JlZGVudGlhbD1BS0lBVkNPRFlMU0E1M1BRSzRaQSUyRjIwMjQwOTA2JTJGdXMtZWFzdC0xJTJGczMlMkZhd3M0X3JlcXVlc3QmWC1BbXotRGF0ZT0yMDI0MDkwNlQwMzUxNTlaJlgtQW16LUV4cGlyZXM9MzAwJlgtQW16LVNpZ25hdHVyZT0xNjViNjMxMDY0MGNlNThhZjI5NDRmNThkZDZhZTU3MDdjNDMwMmIwYmZhNmY3NzYyZjZlNTAxZTc4MjM0MTljJlgtQW16LVNpZ25lZEhlYWRlcnM9aG9zdCZhY3Rvcl9pZD0wJmtleV9pZD0wJnJlcG9faWQ9MCJ9.anG-3Uk7d9mIRRvN_gqIMIsP1NQD9XLuMM8S9RVFxhs)
![](https://private-user-images.githubusercontent.com/89351750/252462761-4d7797df-3d0c-46f5-9f69-ac79ab0cf223.jpeg?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJnaXRodWIuY29tIiwiYXVkIjoicmF3LmdpdGh1YnVzZXJjb250ZW50LmNvbSIsImtleSI6ImtleTUiLCJleHAiOjE3MjU1OTUwMTksIm5iZiI6MTcyNTU5NDcxOSwicGF0aCI6Ii84OTM1MTc1MC8yNTI0NjI3NjEtNGQ3Nzk3ZGYtM2QwYy00NmY1LTlmNjktYWM3OWFiMGNmMjIzLmpwZWc_WC1BbXotQWxnb3JpdGhtPUFXUzQtSE1BQy1TSEEyNTYmWC1BbXotQ3JlZGVudGlhbD1BS0lBVkNPRFlMU0E1M1BRSzRaQSUyRjIwMjQwOTA2JTJGdXMtZWFzdC0xJTJGczMlMkZhd3M0X3JlcXVlc3QmWC1BbXotRGF0ZT0yMDI0MDkwNlQwMzUxNTlaJlgtQW16LUV4cGlyZXM9MzAwJlgtQW16LVNpZ25hdHVyZT1hZTY2NjZjOGMxOWJlOGY5ZTY1ZDBiOTBjNzI2YWRmMTkzY2E5MmRjODQyODczMjc5MDM5Y2JiOTI0OGZlMGE2JlgtQW16LVNpZ25lZEhlYWRlcnM9aG9zdCZhY3Rvcl9pZD0wJmtleV9pZD0wJnJlcG9faWQ9MCJ9.751m0ZlDC_5trHQ0g1cTMV3iyQJ7DGNEfPzq3fvmvZ8)
![](https://private-user-images.githubusercontent.com/89351750/252462749-89f369f6-5317-4933-99a5-d73f88bd84ad.jpeg?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJnaXRodWIuY29tIiwiYXVkIjoicmF3LmdpdGh1YnVzZXJjb250ZW50LmNvbSIsImtleSI6ImtleTUiLCJleHAiOjE3MjU1OTUwMTksIm5iZiI6MTcyNTU5NDcxOSwicGF0aCI6Ii84OTM1MTc1MC8yNTI0NjI3NDktODlmMzY5ZjYtNTMxNy00OTMzLTk5YTUtZDczZjg4YmQ4NGFkLmpwZWc_WC1BbXotQWxnb3JpdGhtPUFXUzQtSE1BQy1TSEEyNTYmWC1BbXotQ3JlZGVudGlhbD1BS0lBVkNPRFlMU0E1M1BRSzRaQSUyRjIwMjQwOTA2JTJGdXMtZWFzdC0xJTJGczMlMkZhd3M0X3JlcXVlc3QmWC1BbXotRGF0ZT0yMDI0MDkwNlQwMzUxNTlaJlgtQW16LUV4cGlyZXM9MzAwJlgtQW16LVNpZ25hdHVyZT0xZGNkOGU0NDUwZThjZDgzNmQ5M2M4OTBlZWRkMTczZmNjMDMzMTY2YmIyNjFlYmYwNjY3MGNkOTY2MTRiZjgyJlgtQW16LVNpZ25lZEhlYWRlcnM9aG9zdCZhY3Rvcl9pZD0wJmtleV9pZD0wJnJlcG9faWQ9MCJ9.yMc9jH3OJhRfKw0NSz5lJtSRets_QydCQlchxg1PT7I)
- Easy to use: The app has a user-friendly interface, making it simple for users to scan QR codes effortlessly.
- Secure: The QR code scanner app prioritizes user security and ensures that scanned QR codes are processed securely.
- Simple and fast: The app provides a quick and efficient scanning process, delivering instant results.
- Stores history of scanned codes: The app maintains a history of scanned QR codes, allowing users to refer back to previous scans.
The app is built using the following technologies and frameworks:
- Kotlin: Kotlin is the primary programming language used for developing the application.
- Room DB: Room is used as the local database to store the history of scanned QR codes.
- Coroutines: Coroutines are used for handling asynchronous operations such as network requests and database transactions.
- Google Code Scanner: The app utilizes the Google Code Scanner library for scanning and decoding QR codes.
- MVVM Architecture: MVVM (Model-View-ViewModel) is an architectural pattern that separates the concerns of data presentation and business logic from the UI components.
Using the QR Code Scanner app is straightforward:
- Open the app on your device.
- Point the camera at a QR code.
- The app will automatically scan the QR code and display the decoded information.
Contributions to the QR Code Scanner app are welcome. If you would like to contribute, please follow these steps or check Contributing Guidelines:
- Fork the repository.
- Create a new branch for your feature or bug fix.
- Make the necessary changes in your branch.
- Commit your changes and push them to your forked repository.
- Submit a pull request, explaining your changes and the rationale behind them.
Have any questions, doubts or want to present your opinions, views? You're always welcome. You can start discussions.
If you have any questions or encounter any issues, please contact [[email protected]]. We appreciate your feedback and support!