In-app events
Learn how to work with in-app events in the iOS SDK.
Overview
This document is a guide on implementing in-app events in the iOS SDK. For an introduction to in-app events for developers, see in-app events.
Before you begin
Integrate In-App Events with our SDK wizard
Logging in-app events
The SDK lets you log user actions happening in the context of your app. These are commonly referred to as in-app events.
The logEvent
method
logEvent
methodThe logEvent
method lets you log in-app events and send them to AppsFlyer for processing.
AppsFlyerLib
exposes logEvent
, predefined event name constants and predefined event parameter constants.
logEvent
takes 3 arguments:
- (void)logEventWithEventName:(NSString *)eventName
eventValues:(NSDictionary<NSString * , id> * _Nullable)eventValues
completionHandler:(void (^ _Nullable)(NSDictionary<NSString *, id> * _Nullable dictionary, NSError * _Nullable error))completionHandler;
- The first argument (
eventName
) is the event name - The second argument (
eventValues
) is the event parametersNSDictionary
- The third argument (
completionHandler
) is an optional completion handler (useful for Handling event submission success/failure)
Note
eventValues
(second argument) must be a validNSDictionary
. For more information, see Foundation JSONSerialization.
Example: Send "add to wishlist" event
For example, to log that a user added an item to their wishlist:
[[AppsFlyerLib shared] logEvent: AFEventAddToWishlist withValues: @{
AFEventParamPrice: @20,
AFEventParamContentId: @"123456"
}]
AppsFlyerLib.shared().logEvent(AFEventAddToWishlist,
withValues: [
AFEventParamPrice: 20,
AFEventParamContentId: "123456"
]);
In the above logEvent
invocation:
- The event name is
AFEventAddToWishlist
- The event value is a
NSDictionary
containing these event parameters:- AFEventParamPrice: The item price the user added to their wishlist
- AFEventParamContentId: The identifier of the added item
Implementing in-app event definitions
Based on the example definition provided in Understanding event structure definitions, the event should be implemented as follows:
[[AppsFlyerLib shared] logEvent: AFEventContentView withValues: @{
AFEventParamContentId: <ITEM_SKU>,
AFEventParamContentType: <ITEM_TYPE>,
AFEventParamPrice: <ITEM_PRICE>
}]
AppsFlyerLib.shared().logEvent(AFEventAddToCart,
withValues: [
AFEventParamContent: <ITEM_NAME>
AFEventParamContentId: <ITEM_SKU>
AFEventParamPrice: <ITEM_PRICE>
]);
Handling event submission success and failure
You can pass a completionHandler
to logEvent
when recording in-app events. The handler allows you to define logic for two scenarios:
- An in-app event recorded successfully
- An error occurred when recording the in-app event
[[AppsFlyerLib shared] logEventWithEventName:AFEventPurchase
eventValues: @{
AFEventParamRevenue: @200,
AFEventParamCurrency: @"USD",
AFEventParamQuantity: @2,
AFEventParamContentId: @"092",
AFEventParamReceiptId: @"9277"
}
completionHandler:^(NSDictionary<NSString *,id> * _Nullable dictionary, NSError * _Nullable error){
if(dictionary != nil) {
NSLog(@"In app callback success:");
for(id key in dictionary){
NSLog(@"Callback response: key=%@ value=%@", key, [dictionary objectForKey:key]);
}
}
if(error != nil) {
NSLog(@"In app callback error:", error);
}
}];
AppsFlyerLib.shared().logEvent(name: AFEventAddToWishlist,
values: [
AFEventParamPrice: 20,
AFEventParamContentId: "123456"
],
completionHandler: { (response: [String : Any]?, error: Error?) in
if let response = response {
print("In app event callback Success: ", response)
}
if let error = error {
print("In app event callback ERROR:", error)
}
});
In the event that an error occurs when recording the in-app event, an error code and string description are provided, as indicated in the table that follows.
Error code | Description (NSError) |
---|---|
10 | "Event timeout. Check 'minTimeBetweenSessions' param" |
11 | "Skipping event because 'isStopTracking' enabled" |
40 | Network error: Error description comes from iOS |
41 | "No dev key" |
50 | "Status code failure" + actual response code from the server |
Recording offline events
The SDK can record events that occur when no internet connection is available. See Offline in-app events for details.
Logging events before calling start
start
If you initialized the SDK but didn't call start
, the SDK will cache in-app events until start
is invoked.
If there are multiple events in the cache, they are sent to the server one after another (unbatched, one network request per event).
Note
If the SDK is initialized,
logEvent
invocations will call SKAdNetwork'supdateConversionValue
even ifstart
wasn't called orisStopped
is set totrue
(in both SDK and S2S modes).
Logging revenue
af_revenue
is the only event parameter that AppsFlyer counts as real revenue in the dashboard and reports.
You can send revenue with any in-app event. Use the AFEventParameterRevenue
constant to include revenue in the in-app event. You can populate it with any numeric value, positive or negative.
The revenue value should not contain comma separators, currency signs, or text. A revenue event should be similar to 1234.56, for example.
Example: Purchase event with revenue
[[AppsFlyerLib shared] logEvent: AFEventPurchase
withValues:@{
AFEventParamContentId:@"1234567",
AFEventParamContentType : @"category_a",
AFEventParamRevenue: @200,
AFEventParamCurrency:@"USD"
}];
AppsFlyerLib.shared().logEvent(AFEventPurchase,
withValues: [
AFEventParamContentId:"1234567",
AFEventParamContentType : "category_a",
AFEventParamRevenue: 200,
AFEventParamCurrency:"USD"
]);
Note
Do not add currency symbols to the revenue value.
Configuring revenue currency
You can set the currency code for an event's revenue by using the af_currency
predefined event parameter:
[[AppsFlyerLib shared] logEvent: AFEventPurchase
withValues:@{
AFEventParamRevenue: @200,
AFEventParamCurrency:@"USD"
}];
AppsFlyerLib.shared().logEvent(AFEventPurchase,
withValues: [
AFEventParamRevenue: 200,
AFEventParamCurrency:"USD"
]);
- The currency code should be a 3 character ISO 4217 code
- The default currency is USD
To learn about currency settings, display, and currency conversion, see our guide on revenue currency.
Logging negative revenue
There may be situations where you want to record negative revenue. For example, a user receives a refund or cancels a subscription.
To log negative revenue:
[[AppsFlyerLib shared] logEvent: @"cancel_purchase"
withValues:@{
AFEventParamContentId:@"1234567",
AFEventParamContentType : @"category_a",
AFEventParamRevenue: @-1.99,
AFEventParamCurrency:@"USD"
}];
AppsFlyerLib.shared().logEvent("cancel_purchase",
withValues: [
AFEventParamContentId:"1234567",
AFEventParamContentType : "category_a",
AFEventParamRevenue: -1.99,
AFEventParamCurrency:"USD"
]);
Notice the following in the code above:
- The revenue value is preceded by a minus sign
- The event name is a custom event called
cancel_purchase
- that's how the marketer identifies negative revenue events in the dashboard and raw-data reports
Validating purchases
AppsFlyer provides server verification for in-app purchases. For more information see Validate and log purchase
Event constants
Predefined event names
Predefined event name constants follow a AFEventEventName
naming convention. For example, AFEventAddToCart
.
Event name | iOS constant name |
---|---|
"af_level_achieved" | AFEventLevelAchieved |
"af_add_payment_info" | AFEventAddPaymentInfo |
"af_add_to_cart" | AFEventAddToCart |
"af_add_to_wishlist" | AFEventAddToWishlist |
"af_complete_registration" | AFEventCompleteRegistration |
"af_tutorial_completion" | AFEventTutorial_completion |
"af_initiated_checkout" | AFEventInitiatedCheckout |
"af_purchase" | AFEventPurchase |
"af_rate" | AFEventRate |
"af_search" | AFEventSearch |
"af_spent_credits" | AFEventSpentCredits |
"af_achievement_unlocked" | AFEventAchievementUnlocked |
"af_content_view" | AFEventContentView |
"af_list_view" | AFEventListView |
"af_travel_booking" | AFEventTravelBooking |
AFEventShare | |
"af_invite" | AFEventInvite |
"af_login" | AFEventLogin |
"af_re_engage" | AFEventReEngage |
"af_update" | AFEventUpdate |
"af_opened_from_push_notification" | AFEventOpenedFromPushNotification |
"af_location_coordinates" | AFEventLocation |
"af_customer_segment" | AFEventCustomerSegment |
"af_subscribe" | AFEventSubscribe |
"af_start_trial" | AFEventStartTrial |
"af_ad_click" | AFEventAdClick |
"af_ad_view" | AFEventAdView |
Predefined event parameters
Predefined event parameter constants follow a AFEventParamParameterName
naming convention. For example, AFEventParamRevenue
.
Event parameter name | iOS constant name | Type |
---|---|---|
"af_content" | AFEventParamContent | String |
"af_achievement_id" | AFEventParamAchievementId | String |
"af_level" | AFEventParamLevel | String |
"af_score" | AFEventParamScore | String |
"af_success" | AFEventParamSuccess | String |
"af_price" | AFEventParamPrice | float |
"af_content_type" | AFEventParamContentType | String |
"af_content_id" | AFEventParamContentId | String |
"af_content_list" | AFEventParamContentList | String[] |
"af_currency" | AFEventParamCurrency | String |
"af_quantity" | AFEventParamQuantity | int |
"af_registration_method" | AFEventParamRegistrationMethod | String |
"af_payment_info_available" | AFEventParamPaymentInfoAvailable | String |
"af_max_rating_value" | AFEventParamMaxRatingValue | String |
"af_rating_value" | AFEventParamRatingValue | String |
"af_search_string" | AFEventParamSearchString | String |
"af_date_a" | AFEventParamDateA | String |
"af_date_b" | AFEventParamDateB | String |
"af_destination_a" | AFEventParamDestinationA | String |
"af_destination_b" | AFEventParamDestinationB | String |
"af_description" | AFEventParamDescription | String |
"af_class" | AFEventParamClass | String |
"af_event_start" | AFEventParamEventStart | String |
"af_event_end" | AFEventParamEventEnd | String |
"af_lat" | AFEventParamLat | String |
"af_long" | AFEventParamLong | String |
"af_customer_user_id" | AFEventParamCustomerUserId | String |
"af_validated" | AFEventParamValidated | boolean |
"af_revenue" | AFEventParamRevenue | float |
"af_projected_revenue" | AFEventProjectedParamRevenue | float |
"af_receipt_id" | AFEventParamReceiptId | String |
"af_tutorial_id" | AFEventParamTutorialId | String |
"af_virtual_currency_name" | AFEventParamVirtualCurrencyName | |
"af_deep_link" | AFEventParamDeepLink | String |
"af_old_version" | AFEventParamOldVersion | String |
"af_new_version" | AFEventParamNewVersion | String |
"af_review_text" | AFEventParamReviewText | String |
"af_coupon_code" | AFEventParamCouponCode | String |
"af_order_id" | AFEventParamOrderId | String |
"af_param_1" | AFEventParam1 | String |
"af_param_2" | AFEventParam2 | String |
"af_param_3" | AFEventParam3 | String |
"af_param_4" | AFEventParam4 | String |
"af_param_5" | AFEventParam5 | String |
"af_param_6" | AFEventParam6 | String |
"af_param_7" | AFEventParam7 | String |
"af_param_8" | AFEventParam8 | String |
"af_param_9" | AFEventParam9 | String |
"af_param_10" | AFEventParam10 | String |
"af_departing_departure_date" | AFEventParamDepartingDepartureDate | String |
"af_returning_departure_date" | AFEventParamReturningDepartureDate | String |
"af_destination_list" | AFEventParamDestinationList | String[] |
"af_city" | AFEventParamCity | String |
"af_region" | AFEventParamRegion | String |
"af_country" | AFEventParamCountry | String |
"af_departing_arrival_date" | AFEventParamDepartingArrivalDate | String |
"af_returning_arrival_date" | AFEventParamReturningArrivalDate | String |
"af_suggested_destinations" | AFEventParamSuggestedDestinations | String[] |
"af_travel_start" | AFEventParamTravelStart | String |
"af_travel_end" | AFEventParamTravelEnd | String |
"af_num_adults" | AFEventParamNumAdults | String |
"af_num_children" | AFEventParamNumChildren | String |
"af_num_infants" | AFEventParamNumInfants | String |
"af_suggested_hotels" | AFEventParamSuggestedHotels | String[] |
"af_user_score" | AFEventParamUserScore | String |
"af_hotel_score" | AFEventParamHotelScore | String |
"af_purchase_currency" | AFEventParamPurchaseCurrency | String |
"af_preferred_neighborhoods" | AFEventParamPreferredNeighborhoods //array of string | String[] |
"af_preferred_num_stops" | AFEventParamPreferredNumStops | String |
"af_adrev_ad_type" | AFEventParamAdRevenueAdType | String |
"af_adrev_network_name" | AFEventParamAdRevenueNetworkName | String |
"af_adrev_placement_id" | AFEventParamAdRevenuePlacementId | String |
"af_adrev_ad_size" | AFEventParamAdRevenueAdSize | String |
"af_adrev_mediated_network_name" | AFEventParamAdRevenueMediatedNetworkName | String |
"af_preferred_price_range" | AFEventParamPreferredPriceRange | int[] - basically a tuple(min,max) but we'll use array of int and use two values |
"af_preferred_star_ratings" | AFEventParamPreferredStarRatings | int[] - basically a tuple(min,max) but we'll use array of int and use two values |
Updated 6 months ago