Error Handling & User Feedback

[Josemiles-ctr]

Description

Implement comprehensive error handling and user feedback mechanisms throughout the app.

Detailed Requirements

• Network error handling:

  • Connection timeout (show retry)
  • No internet (show offline mode notice)
  • Server errors (show user-friendly message)
  • Rate limiting (show wait/retry message)

• User feedback mechanisms:

  • Toast messages for quick actions
  • Snackbars for dismissible messages
  • Dialogs for confirmations
  • Error pages for critical failures

• Error messages:

  • Technical errors hidden from user
  • User-friendly error messages shown
  • Suggest remediation (retry, try later, contact support)
  • Include support email/phone

• Crash reporting:

  • Firebase Crashlytics integration
  • Crashes logged but user not interrupted
  • User notified with option to report

Technical Details

• Retrofit: Error interceptor for network errors
• Global Error Handler: ViewModel base class for error handling
• Firebase Crashlytics: Initialize in Application
• Error Types:
  • Network: ConnectionException, TimeoutException
  • API: 4xx (user error), 5xx (server error)
  • Validation: Input validation errors
  • Permission: Missing permissions

Acceptance Criteria

• Network timeout shows retry button
• No internet shows offline message
• 400 errors show user-friendly message
• 500 errors show "Try again later" message
• 429 errors show rate limit message
• All errors logged to Crashlytics
• Crashes don't crash the app
• User can report crash to Firebase
• Toast shown for form submission success
• Snackbar shown for deletions (with undo)
• Confirmation dialog before destructive actions
• Error page shown for critical failures
• Unit tests for error handling (min 85% coverage)