Barcode-Studio

Barcode Studio – All-in-One QR & Barcode Generator & Product Labeler Barcode Studio is a powerful, production-ready mobile application designed for businesses, retailers, logistics managers, and everyday users. Built for lightning-fast performance, it allows you to generate, scan, and manage custom Barcodes seamlessly even completely offline! A polished, production-ready Flutter app for generating QR codes and barcodes with a beautiful, modern UI (gradient theme, light/dark mode, smooth animations).

Features

QR Code Generator

• Text — plain text of any length
• Link (URL) — auto-prefixes https:// if missing
• Wi-Fi — SSID, password, WPA/WEP/Open security, hidden-network flag (scanning it with a phone camera joins the network directly)
• Contact (vCard) — name, organization, phone, email → adds to contacts when scanned
• Email — pre-filled mailto: with subject & body
• Phone — one-tap-to-call tel: link
• SMS — pre-filled text message
• Event — calendar event (title, location, start/end)
• Custom foreground & background colors
• High error-correction level (H) so codes stay scannable even with a logo overlay added later

Barcode Generator

Supports 9 industry-standard formats via barcode_widget: Code 128, Code 39, EAN-13, EAN-8, UPC-A, ITF, Codabar, PDF417, Data Matrix — each with input validation and inline hints/examples so invalid data is caught before rendering.

Product Labels (shop / retail use)

• Generate professional price-tag style labels (store name, product name, barcode, price) for EAN-13 (standard retail, auto-generates a valid check-digit number) or Code 128 (custom alphanumeric SKU)
• Save products to a local catalog with opening stock quantity
• Select multiple saved products and generate a printable PDF sheet (3 labels per row) to print and cut out for shelves — via printing/pdf

Shared functionality

• Save to gallery (via gal) and Share (via share_plus) as PNG, for both QR codes and barcodes
• Copy raw data to clipboard
• History — every generated code is saved locally (SharedPreferences), can be reopened, re-shared, or deleted individually / cleared in bulk
• Light & dark theme toggle, persisted between launches
• Beautiful gradient hero UI, animated cards, Poppins typography

Screenshots

Project structure

lib/
  main.dart                        Entry point, providers, theming
  theme/
    app_theme.dart                 Colors, gradients, ThemeData
    theme_provider.dart            Light/dark toggle + persistence
  models/
    qr_data_type.dart              QR types + payload builders (WIFI:, VCARD, mailto:, etc.)
    barcode_format_model.dart      Barcode formats + validation
    history_item.dart              History entry model (JSON serializable)
    history_provider.dart          History state + SharedPreferences persistence
  widgets/
    gradient_button.dart           Reusable gradient CTA button
    color_picker_row.dart          Swatch picker for QR colors
    code_preview_card.dart         Screenshot boundary + Save/Share/Copy actions
    export_utils.dart              PNG capture, gallery save, share sheet
  screens/
    home_screen.dart               Hero + navigation cards
    qr_generator_screen.dart       QR type selector, dynamic form, live preview
    barcode_generator_screen.dart  Format selector, validation, live preview
    history_screen.dart            List + detail bottom sheet

Setup

This is a pure Dart/Flutter lib/ + pubspec.yaml package. To run it:

1. Create the native scaffolding (android/ios/etc.) if not already present:

   flutter create --org com.codecraft --project-name qr_barcode_generator .

   (Say no if it asks to overwrite lib/main.dart / pubspec.yaml, or just re-copy this repo's lib/ and pubspec.yaml back over afterwards.)

2. Install dependencies:

   flutter pub get

3. Android — add this permission to android/app/src/main/AndroidManifest.xml (needed only on Android ≤ 9; gal handles scoped storage on Android 10+ automatically):

   <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"
       android:maxSdkVersion="28" />

4. iOS — add this key to ios/Runner/Info.plist (required by gal to save images to Photos):

   <key>NSPhotoLibraryAddUsageDescription</key>
   <string>Allow CodeCraft to save generated codes to your photo library.</string>

5. Run the app:

   flutter run

App icon (launcher icon)

A starter icon is included at assets/icon/icon.png (violet-to-teal gradient with a QR-style mark). To apply it as the real app icon on Android/iOS:

flutter pub get
dart run flutter_launcher_icons

This regenerates every mipmap/AppIcon size automatically (config lives in pubspec.yaml under flutter_launcher_icons:). To use your own logo instead, just replace assets/icon/icon.png with your artwork (square, at least 512×512, PNG) and re-run the command above.

Developer credit / About screen

lib/screens/about_screen.dart shows the developer card (name, email, portfolio link) and is reachable from the About card on the home screen, or by tapping "Made with ❤ by Safia Bibi" at the bottom of the home screen. Update developerName / developerEmail / portfolioUrl constants at the top of that file if these details ever change.

Customizing the look

All colors, gradients, and fonts live in lib/theme/app_theme.dart — change AppColors.primary / secondary / heroGradient to re-skin the whole app in one place.

Notes

• QR payload formats (WIFI:, BEGIN:VCARD, mailto:, sms:, tel:, BEGIN:VEVENT) follow the standard conventions recognized by iOS and Android's built-in camera scanners — no special app needed to scan them.
• Barcode validation is intentionally strict (e.g. EAN-13 requires exactly 12–13 digits) to avoid generating a code that looks fine in-app but fails to scan on real hardware.

License

This project is licensed under the MIT License — see the LICENSE file for details.

Author

Safia Bibi 📧 safia34740@gmail.com 🌐 safiabibiportfolio.site