Herald for Amplitude

Sends Herald events and properties to Amplitude, over amplitude_flutter: events, user properties, screen views and revenue.

final amplitude = Amplitude(
  Configuration(
    apiKey: apiKey,
    optOut: true, // silent until consent
    autocapture: const AutocaptureOptions(screenViews: false), // Herald sends screen views
  ),
);
final tracker = AmplitudeAnalyticsTrackerService(
  eventTrackerFactory: CompositeAmplitudeEventTrackerFactory([
    ScreenViewAmplitudeEventTrackerFactory(amplitude),
    GenericAmplitudeEventTrackerFactory(amplitude),
  ]),
  propertySetterFactory: CompositeAmplitudePropertySetterFactory([
    GenericAmplitudePropertySetterFactory(amplitude),
  ]),
);
final service = AmplitudeAnalyticsService(amplitude);

Values keep their types. A ScreenViewEvent becomes [Amplitude] Screen Viewed, and purchases go through AmplitudeRevenueEvent and RevenueAmplitudeEventTracker, deduplicated by insertId. Amplitude forgets the opt-out between launches, so re-apply the stored answer after start().

Documentation

It works with herald, the core, whose page lists every Herald package. The Herald website has the guides, and the repository has an example app.