Tracking

You can track events in Engagement to learn more about your app’s usage patterns and to segment your customers by their interactions.

By default, the SDK tracks certain events automatically, including:

• Installation (after app installation and after invoking anonymize)
• User session start and end
• Banner event for showing an in-app message or content block

Additionally, you can track any custom event relevant to your business.

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All examples on this page assume the ExponeaPlugin is available as _plugin. Refer to Initialize the SDK for details.

Events

Track Event

Use the trackEvent() method with an Event object as an argument to track any custom event type relevant to your business.

You can use any name for a custom event type. We recommended using a descriptive and human-readable name.

Refer to the Custom Events documentation for an overview of commonly used custom events.

Arguments

Event

Examples

Imagine you want to track which screens a customer views. You can create a custom event screen_view for this.

First, create an Event with the name and properties you want to track with this event. In our example, you want to track the name of the screen, so you include a property screen_name along with any other relevant properties:

final event = Event(
  name: 'screen_view',
  properties: {
    'screen_name': "dashboard",
    'other_property': 123.45,
  },
);

Pass the event object to trackEvent() as follows:

_plugin.trackEvent(event);

The second example below shows how you can use a nested structure for complex properties if needed:

final event = Event(
  name: 'purchase',
  properties: {
    'purchase_status': "success",
    'product_list': [
        {'product_id': 'abc123', 'quantity': 2},
        {'product_id': 'abc456', 'quantity': 1}
    ],
    'total_price': 7.99,
  },
);
_plugin.trackEvent(event);

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Optionally, you can provide a custom timestamp if the event happened at a different time. By default the current time will be used.

Customers

Identifying your customers allows you to track them across devices and platforms, improving the quality of your customer data.

Without identification, events are tracked for an anonymous customer, only identified by a cookie. Once the customer is identified by a hard ID, these events will be transferred to a newly identified customer.

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Keep in mind that, while an app user and a customer record can be related by a soft or hard ID, they are separate entities, each with their own lifecycle. Take a moment to consider how their lifecycles relate and when to use identify and anonymize.

Identify

Use the identifyCustomer() method with a Customer object as an argument to identify a customer using their unique hard ID.

The default hard ID is registered and its value is typically the customer's email address. However, your Engagement project may define a different hard ID.

Optionally, you can track additional customer properties such as first and last names, age, etc.

Arguments

Customer

Examples

First, create a Customer object containing at least the customer's hard ID and, optionally, a dictionary with additional customer properties:

final customer = Customer(
  ids: {
    'registered': '[email protected]',
  },
  properties: {
    'first_name': 'Jane',
    'last_name': 'Doe',
    'age', 32
  },
);

Pass the customer object to identifyCustomer():

_plugin.identifyCustomer(customer);

If you only want to update the customer ID without any additional properties, you can pass an empty dictionary into properties:

final customer = Customer(
  ids: {
    'registered': '[email protected]',
  },
  properties: {},
);
_plugin.identifyCustomer(customer);

Anonymize

Use the anonymize() method to delete all information stored locally and reset the current SDK state. A typical use case for this is when the user signs out of the app.

Invoking this method will cause the SDK to:

• Remove the push notification token for the current customer from local device storage and the customer profile in Engagement.
• Clear local repositories and caches, excluding tracked events.
• Track a new session start if automaticSessionTracking is enabled.
• Create a new customer record in Engagement (a new cookie soft ID is generated).
• Assign the previous push notification token to the new customer record.
• Preload in-app messages, in-app content blocks, and app inbox for the new customer.
• Track a new installation event for the new customer.

You can also use the anonymize method to switch to a different Engagement project. The SDK will then track events to a new customer record in the new project, similar to the first app session after installation on a new device.

Examples

_plugin.anonymize();```

Switch to a different project:

```dart
final configChange = ExponeaConfigurationChange(
  project: ExponeaProject(
    projectToken: 'new-project-token',
    authorizationToken: 'new-authorization-token',
  ),
  mapping: {
    EventType.payment: [
      ExponeaProject(
        projectToken: 'special-project-for-payments',
        authorizationToken: 'payment-authorization-token',
        baseUrl: 'https://api-payments.some-domain.com',
      ),
    ],
  },
);
_plugin.anonymize(configChange);

Sessions

The SDK tracks sessions automatically by default, producing two events: session_start and session_end.

The session represents the actual time spent in the app. It starts when the application is launched and ends when it goes into the background. If the user returns to the app before the session times out, the application will continue the current session.

The default session timeout is 20 seconds. Set sessionTimeout in the SDK configuration to specify a different timeout.

Track Session Manually

To disable automatic session tracking, set automaticSessionTracking to false in the SDK configuration.

Use the trackSessionStart() and trackSessionEnd() methods to track sessions manually.

Examples

_plugin_.trackSessionStart()

_plugin_.trackSessionEnd()

Override Default Session Event Properties

The SDK automatically tracks a number of default properties for the session_start and session_end events, including ip, city, country, etc.

You can override the value of any of these properties by including them in the defaultProperties configuration parameter (see below). For example, if you don't want to track customers' IP addresses, you can set the ip property's default value to an empty string.

Push Notifications

If developers integrate push notification functionality in their app, the SDK automatically tracks the push notification token by default.

Track Token Manually

Use either the trackPushToken() (Firebase) or trackHmsPushToken (Huawei) method to manually track the token for receiving push notifications. The token is assigned to the currently logged-in customer (with the identifyCustomer method).

Invoking this method will track a push token immediately regardless of the value of 'tokenTrackFrequency' (refer to the Configuration documentation for details).

Each time the app becomes active, the SDK calls verifyPushStatusAndTrackPushToken and tracks the token.

Arguments

Example

Firebase:

ExponeaPlugin().trackPushToken("value-of-push-token")

Huawei:

ExponeaPlugin().trackHmsPushToken("value-of-push-token")

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Remember to invoke anonymize whenever the user signs out to ensure the push notification token is removed from the user's customer profile. Failing to do this may cause multiple customer profiles share the same token, resulting in duplicate push notifications.

Payments

The SDK provides a convenience method trackPaymentEvent to help you track information about a payment for a product or service within the application.

Track Payment Event

Use the trackPaymentEvent() method to track payments.

Arguments

Examples

First, create a PurchasedItem containing the basic information about the purchase:

final item = PurchasedItem(
    value = 12.34,
    currency = "EUR",
    paymentSystem = "Virtual",
    productId = "handbag",
    productTitle = "Awesome leather handbag"
)

Pass the PurchasedItem to trackPaymentEvent as follows:

ExponeaPlugin().trackPaymentEvent(item)

Default Properties

You can configure default properties to be tracked with every event. Note that the value of a default property will be overwritten if the tracking event has a property with the same key.

final config = ExponeaConfiguration(
    projectToken: 'YOUR_PROJECT_TOKEN',
    authorizationToken: 'YOUR_API_KEY',
    baseUrl: 'YOUR_API_BASE_URL', 
    defaultProperties: const {
    'thisIsADefaultStringProperty': 'This is a default string value',
    'thisIsADefaultIntProperty': 1
    },
_plugin.configure(configuration)

After initializing the SDK, you can change the default properties using the method ExponeaPlugin.setDefaultProperties().