Set up mParticle

import com.mparticle.MParticle;
 
OptimizelyClient optimizelyClient = optimizelyManager.getOptimizely();
// Add an Activate listener
int notificationId = optimizelyClient.getNotificationCenter().addNotificationListener(NotificationCenter.NotificationType.Activate, new ActivateNotificationListener() {
  @Override
  public void onActivate(Experiment experiment,
                    String userId,
                    Map<String, String> attributes,
                    Variation variation) {
 
    String experimentId = experiment.getId();
    String experimentKey = experiment.getKey();
    String variationId = variation.getId();
    String variationKey = variation.getKey();
 
    Map<String, String> eventInfo = new HashMap<String, String>(2);
    eventInfo.put("experimentId", experimentId);
    eventInfo.put("experimentName", experimentKey);
    eventInfo.put("variationId", variationId);
    eventInfo.put("variationName", variationKey);
 
   MPEvent event = new MPEvent.Builder("Experiment Viewed",     EventType.Transaction)
                .duration(100)
                .info(eventInfo)
                .category("AB Test")
                .build();
 
MParticle.getInstance().logEvent(event);
 
  }
});

@import mParticle_Apple_SDK;
 
// Conditionally activate an experiment for the provided user, can use mParticle ids 
OPTLYVariation *variation = [optimizely activate:@"my_experiment" 
                                          userId:[MParticle sharedInstance].identity.deviceApplicationStamp];
 
// mParticle event
MPProduct *product = [[MPProduct alloc] initWithName:@"Foo name"
                                                 sku:@"Foo sku"
                                            quantity:@4
                                               price:@100.00];
MPTransactionAttributes *attributes = [[MPTransactionAttributes alloc] init];
attributes.transactionId = @"foo-transaction-id";
// mapped to Optimizely as 45000 cents
attributes.revenue = @450.00;
attributes.tax = @30.00;
attributes.shipping = @30;
 
MPCommerceEventAction action = MPCommerceEventActionPurchase;
MPCommerceEvent *event = [[MPCommerceEvent alloc] initWithAction:action
                                                         product:product];
 
// mapped to Optimizely as a custom event name
[event addCustomFlag:@"custom revenue event name"
             withKey:MPKitOptimizelyEventName];
event.transactionAttributes = attributes;
[[MParticle sharedInstance] logCommerceEvent:event];
 
 
// notification listener that is bound to activate() and sends an event to mParticle with the experiment and variation information.
 
[optimizely.notificationCenter addActivateNotificationListener:^(OPTLYExperiment *experiment, NSString *userId, NSDictionary<NSString *,NSString *> *attributes, OPTLYVariation *variation, NSDictionary<NSString *,NSString *> *event) {
     
    MPEvent *event = [[MPEvent alloc] initWithName:@"Experiment Viewed"
                                          type:MPEventTypeOther];
     NSDictionary *eventInfo = @{
           @"experimentId" : [experiment experimentId],
           @"experimentName" : [experiment experimentKey],
           @"variationId" : [variation variationId],
           @"variationName" : [variation variationKey]
           };
      [[MParticle sharedInstance] logEvent:event];
 
}];

import mParticle_Apple_SDK
 
// Optimizely notification listener for activate() 
let activateNotificationId = optimizely?.notificationCenter?.addActivateNotificationListener({ (experiment, userId, attributes, variation, logEvent) in
        let eventInfo = ["experimentId": experiment.experimentId as Any,
                  "experimentName": experiment.experimentKey as Any,
                  "variationId": variation.variationId as Any,
                  "variationName": variation.variationKey as Any]
    
       MParticle.sharedInstance().logEvent("Experiment Viewed", eventType: MPEventType.other, eventInfo: eventInfo)
 
})