Design Considerations

User Interface

• Material Design:

  • Integrated Android's Material Design components like MaterialButton, TextInputLayout, RecyclerView, and CardView.
  • Applied Material themes through Theme.MaterialComponents.* in styles.xml.
  • Used Google’s Material Design library for predefined styles and components.

• Responsive Layout:

  • Designed to support various screen sizes and orientations using ConstraintLayout.
  • Created separate XML layout files for different configurations (e.g., res/layout, res/layout-large).
  • Used ViewModel and LiveData to handle configuration changes smoothly.

• Accessibility:

  • Enhanced usability for individuals with disabilities, supporting screen readers and high-contrast themes.
  • Added content descriptions for critical visual elements.
  • Used sp units for text sizes, with android:autoSizeTextType in TextView for text scaling.

Performance

• Optimized API Calls:
  • Minimized latency through efficient API handling.
  • Implemented caching strategies, using OkHttp’s caching for offline network responses.

Security

• Secure Network Communication:
  • Enforced HTTPS for all network communication to ensure data protection.

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Integration

Third-Party Services

• Local Data Storage:
  • Used Room Database for local caching of user preferences and vehicle data.

Backend API Integration

• Retrofit:
  • Employed for efficient HTTP communication.
• OkHttp:
  • Manages network requests, with GSON used for parsing JSON to facilitate smooth backend API integration.

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Testing

• Testing Configuration:
  • Configured with JUnit and Espresso dependencies to ensure comprehensive test coverage.