Receive lifecycle callbacks

The native SDKs use different callback APIs — iOS uses the SpyneShootDelegate protocol, Android uses the SpyneShootListener interface — and the method names differ. The bridge forwards both onto the event channel using a single, unified set of event names, so your Dart code stays the same on both platforms:

static const _eventChannel = EventChannel('com.spyne.spyne_sdk_flutter/spyne_events');

_eventChannel.receiveBroadcastStream().listen((event) {
  final map = Map<String, dynamic>.from(event as Map);
  switch (map['event'] as String) {
    case 'onShootInitiated': break; // shootData, dealerVinId, mediaId, status
    case 'onShootCompleted': break; // shootData, dealerVinId, mediaId, isReshoot
    case 'onShootExit':      break; // shootData, dealerVinId, mediaId
  }
});

Each Dart event is forwarded from the corresponding native callback:

Dart event	iOS — SpyneShootDelegate	Android — SpyneShootListener	Parameters
onShootInitiated	shootDidInitiate(...)	onShootInitiated(...)	shootData, dealerVinId, mediaId, status
onShootCompleted	shootDidComplete(...)	onShootCompleted(...)	shootData, dealerVinId, mediaId, isReshoot
onShootExit	shootDidExit(...)	onShootExit(...)	shootData, dealerVinId, mediaId

dealerVinId is the inventoryId used by the webhook / GET media APIs; mediaId tracks the shoot session. For full callback semantics, see the platform doc: iOS Callbacks · Android Callbacks.