📄 PDFMaster - Complete Android Source Code

Transform your PDF management vision into reality with this production-ready Android source code. Built with modern architecture, Material Design, and enterprise-grade features that skip 6-12 months of development time.

✨ What You Get:

• Complete source code (Java/Kotlin)
• Professional project structure
• Material Design UI components
• AdMob integration ready
• Google Play Billing setup
• Comprehensive documentation
• Commercial license included

🔒 Commercial License Features:

• Clear usage rights for business applications
• Ongoing support and guidance
• Compliance verification process

💼 Perfect For:

• Developers launching commercial apps
• Agencies building client solutions
• Entrepreneurs with app ideas
• Businesses needing custom solutions

📱 Technical Features:

• MVVM architecture
• Room database integration
• WorkManager for background tasks
• Modern Android APIs
• ProGuard optimization ready
• Multi-language support

🎯 Skip Development Time:

Instead of 6-12 months of development, get a production-ready foundation in minutes. Customize, rebrand, and launch your app with confidence.

📞 Support Included:

• Setup assistance
• Compliance guidance
• Customization help
• Ongoing support

📄 PDFMaster - Complete Feature List

📱 Core PDF Management Features

• PDF viewing and reading
• PDF creation from images and documents
• PDF editing and annotation
• PDF merging and splitting
• PDF compression and optimization
• PDF form filling and creation

🎨 User Interface & Design

• Material Design 3.0 implementation
• Dark/Light theme support
• Responsive layout for all screen sizes
• Custom color schemes and branding
• Accessibility features (TalkBack support)
• Multi-language localization ready

💾 Data Management

• Room Database with SQLCipher encryption
• PDF library with search and filtering
• Export functionality (CSV, JSON)
• Cloud backup integration ready
• Data retention policies
• Secure data storage and encryption

🔧 Technical Architecture

• MVVM architecture pattern
• Repository pattern implementation
• LiveData and ViewModel integration
• WorkManager for background processing
• Dependency injection ready
• Modular code structure

📊 Analytics & Monetization

• Firebase Analytics integration
• AdMob banner and interstitial ads
• Google Play Billing v8.0.0
• Premium features and subscriptions
• Crashlytics for error tracking
• Performance monitoring

🔐 Security Features

• Permission handling and validation
• Secure network communication
• Input sanitization and validation
• Rate limiting for API calls
• Threat detection and prevention
• Secure preferences storage

🌐 Network & Integration

• HTTP/HTTPS communication
• JSON parsing and serialization
• REST API integration ready
• Offline functionality support
• Background sync capabilities
• Push notification support

📱 Android Features

• Android 6.0+ compatibility
• Runtime permissions handling
• Adaptive icons support
• App shortcuts and widgets
• Picture-in-Picture mode
• Biometric authentication ready

🛠️ Development & Testing

• Unit test framework setup
• Integration test examples
• ProGuard/R8 optimization
• Multi-dex support
• Build variants (debug/release)
• Continuous integration ready

📚 Documentation & Support

• Comprehensive README files
• Code documentation and comments
• Setup and installation guides
• Troubleshooting documentation
• API reference documentation
• Video tutorials and demos

🚀 Performance & Optimization

• Memory leak prevention
• Battery optimization
• Fast app startup time
• Efficient PDF processing
• Background task optimization
• ProGuard code shrinking

💻 Development Environment Requirements

🖥️ Operating System

• Windows: Windows 10/11 (64-bit)
• macOS: macOS 10.15 (Catalina) or later
• Linux: Ubuntu 18.04 LTS or later

🛠️ Development Tools

• Android Studio: Arctic Fox (2020.3.1) or later
• Java Development Kit: JDK 11 or JDK 17 (LTS)
• Gradle: Version 7.0+ (included with Android Studio)
• Android SDK: API Level 23 (Android 6.0) to API Level 34 (Android 14)

💾 Hardware Requirements

• RAM: Minimum 8GB, Recommended 16GB+
• Storage: Minimum 10GB free space
• Processor: Intel i5/AMD Ryzen 5 or better
• Graphics: Any modern graphics card

📱 Android Platform Requirements

🎯 Target Android Versions

• Minimum SDK: API Level 23 (Android 6.0 Marshmallow)
• Target SDK: API Level 36 (Android 16)
• Compile SDK: API Level 36 (Android 16)

📊 Device Compatibility

• Screen Sizes: Small, Normal, Large, XLarge
• Screen Densities: mdpi, hdpi, xhdpi, xxhdpi, xxxhdpi
• Architectures: ARM64-v8a, ARMv7, x86, x86_64
• Orientation: Portrait and Landscape support

📚 Required Dependencies & Libraries

🏗️ Core Android Dependencies

• AndroidX Core: 1.10.0+
• AndroidX AppCompat: 1.6.1+
• AndroidX Fragment: 1.6.0+
• AndroidX Activity: 1.7.0+
• AndroidX ConstraintLayout: 2.1.4+
• AndroidX RecyclerView: 1.3.0+
• AndroidX ViewPager2: 1.0.0+

🎨 UI & Design Dependencies

• Material Design Components: 1.9.0+
• Material Design Icons: 1.1.0+
• AndroidX CardView: 1.0.0+
• AndroidX SwipeRefreshLayout: 1.1.0+
• AndroidX CoordinatorLayout: 1.2.0+

💾 Data & Storage Dependencies

• Room Database: 2.5.0+
• SQLCipher: 4.5.3+
• AndroidX Preferences: 1.2.0+
• DataStore: 1.0.0+

🌐 Network & API Dependencies

• OkHttp: 4.10.0+
• Retrofit: 2.9.0+
• Gson: 2.10.0+
• Glide: 4.15.0+

🔥 Firebase Dependencies

• Firebase BOM: 32.0.0+
• Firebase Analytics: 21.3.0+
• Firebase Crashlytics: 18.4.0+
• Firebase Performance: 20.4.0+
• Firebase Functions: 20.2.0+

💰 Monetization Dependencies

• Google AdMob: 22.2.0+
• Google Play Billing: 6.0.0+
• Google UMP: 2.0.0+

🔧 Utility Dependencies

• WorkManager: 2.8.1+
• Lifecycle Components: 2.6.1+
• ViewModel & LiveData: 2.6.1+
• Navigation Component: 2.6.0+
• Hilt (Dependency Injection): 2.45+

🔐 Security & Permissions

📱 Required Permissions

• Camera: For QR scanning and photo capture
• Storage: For file access and saving
• Internet: For network operations and ads
• Network State: For connectivity monitoring
• Vibrate: For haptic feedback
• Flashlight: For camera flash control

🔒 Security Features

• Network Security Config: Required for API calls
• Certificate Pinning: Optional security enhancement
• ProGuard/R8: Code obfuscation and optimization
• Encrypted Storage: SQLCipher database encryption

🌍 Localization & Internationalization

🌐 Supported Languages

• English: Primary language (en)
• Spanish: Español (es)
• French: Français (fr)
• German: Deutsch (de)
• Additional Languages: Easy to add via strings.xml

2.1 Clone/Download Source Code

1. Extract the downloaded source code ZIP file
2. Open Android Studio
3. Select "Open an existing Android Studio project"
4. Navigate to the extracted project folder
5. Click "OK" to open the project

2.2 Sync Project Dependencies

1. Wait for Android Studio to index the project
2. Click "Sync Now" when prompted
3. Or manually sync: File → Sync Project with Gradle Files
4. Wait for all dependencies to download (may take 5-15 minutes)
5. Resolve any dependency conflicts if they arise

2.3 Verify Project Structure

• Ensure all project files are visible in Project view
• Check that Gradle sync completed successfully
• Verify no red error indicators in project files
• Confirm build.gradle files are properly configured

⚙️ Step 3: Configuration & Customization

3.1 Update Package Information

1. Open app/build.gradle
2. Update applicationId to your unique package name:
   • Example: com.yourcompany.yourappname
   • Must be unique across Google Play Store
   • Use reverse domain notation
3. Update versionCode and versionName
4. Update minSdkVersion and targetSdkVersion if needed

3.2 Configure Firebase Project

1. Go to Firebase Console
2. Create a new project or select existing project
3. Add Android app to your Firebase project
4. Use your new package name (applicationId)
5. Download google-services.json
6. Place google-services.json in the app/ directory
7. Verify Firebase dependencies are in build.gradle

3.3 Configure AdMob

1. Go to AdMob Console
2. Create a new app or select existing app
3. Generate AdMob App ID
4. Create ad units (Banner, Interstitial, Rewarded)
5. Update strings.xml with your AdMob App ID
6. Update ad unit IDs in your ad implementation

3.4 Customize App Branding

1. Replace app icon in app/src/main/res/mipmap-* directories
2. Update app name in app/src/main/res/values/strings.xml
3. Customize colors in app/src/main/res/values/colors.xml
4. Update themes in app/src/main/res/values/themes.xml
5. Replace splash screen and launch images

3.5 Update App Permissions

1. Review app/src/main/AndroidManifest.xml
2. Add/remove permissions based on your app's needs
3. Ensure all required permissions are declared
4. Update permission descriptions in strings.xml

🔐 Step 4: Security Configuration

4.1 Network Security Configuration

1. Review app/src/main/res/xml/network_security_config.xml
2. Update domain allowlist for your APIs
3. Configure certificate pinning if required
4. Test network security with your backend services

4.2 ProGuard/R8 Configuration

1. Review app/proguard-rules.pro
2. Add custom rules for your specific libraries
3. Test obfuscation with release builds
4. Ensure critical classes are not obfuscated

4.3 Database Encryption

1. Verify SQLCipher configuration in database classes
2. Update encryption keys if needed
3. Test database operations with encryption enabled

🧪 Step 5: Testing & Validation

5.1 Build Configuration

1. Select Build Variant: Debug or Release
2. Clean project: Build → Clean Project
3. Rebuild project: Build → Rebuild Project
4. Verify successful build with no errors

5.2 Device Testing

1. Connect Android device or start emulator
2. Enable Developer Options and USB Debugging on device
3. Run app on device: Run → Run 'app'
4. Test all major app features
5. Verify app performance and stability

5.3 Feature Testing Checklist

• [ ] App launches without crashes
• [ ] All UI elements display correctly
• [ ] Navigation between screens works
• [ ] Database operations function properly
• [ ] Network requests complete successfully
• [ ] AdMob integration displays ads
• [ ] Firebase Analytics tracks events
• [ ] App handles errors gracefully