AppException class abstract

Base exception class for application-specific errors in Driver Lite.

Provides a common interface for all custom exceptions, ensuring consistent error handling and messaging across different error types.

Subclasses should represent specific error categories such as network failures, validation errors, or business logic violations. This allows error handling code to catch and respond to specific error types while maintaining a unified exception hierarchy.

Example subclasses:

class NetworkAppException extends AppException {
  const NetworkAppException({required super.message});
}

class ValidationException extends AppException {
  const ValidationException({required super.message});
}

Usage:

try {
  await placeOrder();
} catch (e) {
  if (e is AppException) {
    // Handle application-specific error
    showErrorDialog(e.message);
  } else {
    // Handle unexpected errors
    logUnknownError(e);
  }
}

See also:

• NetworkAppException for network-related errors
• ExternalLaunchException for third-party service failures