Flutter SDK (v4)

Pub Version

Attention

This guide provides instructions for installing and setting up the Flutter SDK v4. For earlier versions, consult the Flutter SDK (Previous) guide.

Install the Airbridge iOS SDK and implement the necessary settings following the steps below.

Install SDK

The Airbridge Flutter SDK can be installed using the method below. After installation, you can verify whether the SDK has been properly installed through a Flutter SDK Test.

Add the following code to the dependencies block in the pubspec.yaml file.

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dependencies:
  # Get the latest version from https://pub.dev/packages/airbridge_flutter_sdk/versions
  airbridge_flutter_sdk: HERE_LATEST_VERSION

Open the Terminal at the location of the top-level file of the relevant project and execute the command below. Note that the Airbridge Flutter SDK only works on Flutter 1.20.0 and later and on Dart 2.12.0 and later.

Shell
1
flutter pub get

Install Restricted SDK

Attention

Install only one version of the SDK, either the general SDK or the restricted SDK.

Depending on policies and environments, restrictions on collecting device IDs like GAID and IDFA may be required. When installing the Restricted SDK version, the device IDs are not collected.

Install the Restricted SDK using the method below.

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dependencies:
  # Get the latest version from https://pub.dev/packages/airbridge_flutter_sdk_restricted/versions
  airbridge_flutter_sdk_restricted: HERE_LATEST_VERSION

Add the following line to the dependencies block in the pubspec.yaml file.

Open the Terminal at the location of the top-level file of the relevant project and execute the command below.

Shell
1
flutter pub get

Initialize SDK

The initialization methods for iOS and Android SDKs are different. Refer to the information below. The YOUR_APP_NAME and YOUR_APP_SDK_TOKEN can be found on the [Settings]>[Tokens] page in the Airbridge dashboard.

iOS

Add the following code to the ios/YOUR_PROJECT_NAME/AppDelegate.m file.

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import airbridge_flutter_sdk

override func application(
    _ application: UIApplication,
    didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
  ) -> Bool {
    AirbridgeFlutter.initializeSDK(appName: "YOUR_APP_NAME", appToken: "YOUR_APP_SDK_TOKEN")
}

Android

If an Application class is not defined in the android module of the project, create an Application class.

Add the following code to the android/app/src/main/java/.../MainApplication.kt file.

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import co.ab180.airbridge.flutter.AirbridgeFlutter
import io.flutter.app.FlutterApplication

class MainApplication: FlutterApplication() {
    override fun onCreate() {
        super.onCreate()
        AirbridgeFlutter.initializeSDK(this, "YOUR_APP_NAME", "YOUR_APP_SDK_TOKEN")
    }
}

Register the Application class you created earlier in the AndroidManifest.xml of the android module of the project as follows.

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<application
    android:name=".MainApplication"
    ...>
    ...
</application>

Configure SDK

Complete the necessary configurations to use the Airbridge Flutter SDK.

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{
    "sdkEnabled": boolean,
    "logLevel": "debug" | "info" | "warning" | "error" | "fault",
    "autoStartTrackingEnabled": boolean,
    "autoDetermineTrackingAuthorizationTimeoutInSecond": number,
    "trackMetaDeferredAppLinkEnabled": boolean,
    "sessionTimeoutInSecond": number,
    "metaInstallReferrerAppID": string,
    "trackAirbridgeDeeplinkOnlyEnabled": boolean,
    "trackInSessionLifecycleEventEnabled": boolean,
    "hashUserInformationEnabled": boolean,
    "sdkSignatureID": string,
    "sdkSignatureSecret": string,
    "clearEventBufferOnInitializeEnabled": boolean,
    "eventBufferCountLimit": number,
    "eventBufferSizeLimitInGibibyte": number,
    "eventTransmitIntervalInSecond": number,
    "isHandleAirbridgeDeeplinkOnly" : boolean
}
  1. Create an airbridge.json file at the top level of the Flutter project folder and input the JSON as above.

  2. Don't input values for functions that are not needed.

For detailed guidance on the individual functions, refer to the links below.

Configure ATT Prompt

Note

The functions necessary to ensure compliance with privacy policies should be reviewed with legal counsel.

In the iOS environment, the IDFA can only be collected when users provide consent for data tracking through the AppTrackingTransparency (ATT) prompt.

Event collection should be delayed until the user allows tracking. If the install event is collected before the user allows tracking through the ATT prompt, the install event data will lack an identifier, making performance measurement difficult. We recommend setting a sufficient delay time for event collection to collect identifiers.

1. Prepare the text you will use in the ATT prompt.

2. Provide the ATT prompt following this guide provided by Apple.

3. If the install event is not collected, the Airbridge Flutter SDK delays collecting install events for 30 seconds until the user allows tracking each time the app is launched. If the user exits the app before deciding whether to allow tracking, the SDK will not collect the install event and will try again at the next app launch.

The autoDetermineTrackingAuthorizationTimeout function can be used to set a longer delay for collecting install events. The default setting for the autoDetermineTrackingAuthorizationTimeout is 300 seconds. It can be set up to 3600 seconds (1 hour).

Attention

Sufficient time must be configured to delay the collection of install events. If the delay time is up, the SDK will collect install events without identifiers before users can allow tracking on the ATT prompt.

SDK opt-in

Attention

The instructions below are optional. Proceed only if necessary.

The opt-in policy requires user consent before using user data.

After setting the autoStartTrackingEnabled to false, call the startTracking function at the point of time when you can collect events. When the startTracking function is called, the SDK will start collecting events.

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import 'package:airbridge_flutter_sdk/airbridge_flutter_sdk.dart';
...
Airbridge.startTracking();

SDK opt-out

Attention

The instructions below are optional. Proceed only if necessary.

The opt-out policy allows the use of user information until the user explicitly declines.

After setting the autoStartTrackingEnabled to true, call the stopTracking function at the point of time when you can no longer collect events. When the stopTracking function is called, the SDK will stop collecting events.

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import 'package:airbridge_flutter_sdk/airbridge_flutter_sdk.dart';
...
Airbridge.stopTracking();

SDK Signature

Attention

The instructions below are optional. Proceed only if necessary.

With the SDK Signature, you can ensure SDK spoofing prevention and use verified events for ad performance measurement.

For the SDK Signature setup, the SDK Signature credentials are required, which includes the Secret ID and the Secret. The required SDK Signature credentials can be found in the Airbridge dashboard. For more details about the SDK Signature credentials, refer to this Airbridge guide.

Deep Linking

Deep linking allows you to redirect users from ads to specific locations within your app. The data collected from the tracking link enables you to monitor the performance of the deep link in Airbridge.

When Airbridge generates a tracking link, it automatically selects and utilizes the optimal Airbridge deep link, depending on the environment. This link will be used for user redirection, and it is called the scheme deep link.

Example)

  • Airbridge Deep link: https://YOUR_APP_NAME.airbridge.io/~~~

  • Scheme Deep link: YOUR_SCHEME://product/12345

When the app is installed on a device and the user clicks the tracking link, the app opens through the Airbridge deep link. The Airbridge SDK converts the Airbridge deep link into a scheme deep link set on the tracking link. The converted scheme deep link is sent to the app.

When the app is not installed on a device and the user clicks the tracking link, the Airbridge deep link is saved. After the user moves to the app store or website and the app is installed and launched, the Airbridge SDK converts the saved Airbridge deep link into a scheme deep link. The converted scheme deep link is sent to the app.

Set up deep linking

For the deep linking setup, the following information is required.

  • Deep link information submitted in the Airbridge dashboard

  • App page address for user redirection

First, enter the deep link information into the Airbridge dashboard.

After entering the deep link information into the Airbridge dashboard, an additional setup is required to enable the following.

  • App launch with Airbridge deep links

  • Airbridge deep link event collection

  • User redirection with Airbridge deep links

For detailed instructions, refer to the information below.

Set up deferred deep linking

When a user clicks on a tracking link with deferred deep linking capabilities and your app is not installed on the device, the Airbridge SDK retrieves the deep link as follows.

Deferred deep links are automatically passed to OnDeeplinkReceived, so no additional settings are required.

In-app Events

The Airbridge SDK collects user actions from the app as per settings and sends them as in-app events.

Send in-app events

SDK setup for hybrid apps

You can set up the Android SDK to handle Airbridge-related tasks within the in-app website without changing the website's code for your hybrid app.

Call the Airbridge.trackEvent function to send events. Refer to the information below about the required Airbridge.trackEvent function components and their types.

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static void trackEvent({
    required String category,
    Map<String, dynamic>? semanticAttributes,
    Map<String, dynamic>? customAttributes
})

Component

Required

Type

Description

category

Required

String

Event name

semanticAttributes

Optional

Map<String, dynamic>

Semantic attributes of the events

customAttributes

Optional

Map<String, dynamic>

Custom attributes of the events

Refer to the component definition and available strings below.

The Event Category of Standard Events and Semantic Attributes provided by the SDK are as follows.

Refer to the example codes for each type of data below.

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import 'package:airbridge_flutter_sdk/airbridge_flutter_sdk.dart';

Airbridge.trackEvent(
    category: AirbridgeCategory.ORDER_COMPLETED,
    semanticAttributes: {
        // action
        AirbridgeAttribute.ACTION: 'Tool',
        // label
        AirbridgeAttribute.LABEL: 'Hammer',
        // value
        AirbridgeAttribute.VALUE: 10,
        // semantic attribute (provided by sdk)
        AirbridgeAttribute.CURRENCY: 'USD',
        AirbridgeAttribute.PRODUCTS: [
            {
                // semantic attribute value (provided by sdk)
                AirbridgeAttribute.PRODUCT_ID: '12345',
                // semantic attribute value (not provided by sdk)
                'name': 'PlasticHammer',
            },
        ],
        // semantic attribute (not provided by sdk)
        'totalQuantity': 1,
    },
    customAttributes: {
        // custom attribute
        'promotion': 'FirstPurchasePromotion',
    },
);

Additional in-app event settings

Attention

The default settings will apply if no additional settings are configured. Proceed after reviewing whether additional settings are necessary.

Configure additional settings for sending in-app events if necessary.

Example Code

Airbridge collects in-app events that are classified as Standard Events and Custom Events. Standard Events are events predefined by Airbridge. Refer to the example codes below.

Custom Events are events defined by Airbridge users to track user actions that are unique to their services. Refer to the example code below.

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import 'package:airbridge_flutter_sdk/airbridge_flutter_sdk.dart';
...
Airbridge.trackEvent(
    category: 'event',
    semanticAttributes: {
        AirbridgeAttribute.VALUE: 10,
    },
    customAttributes: {
        'string': 'string',
        'number': 1000,
        'boolean': true,
        'object': {'key': 'value'},
        'array': ['value'],
    },
);

User Data

Airbridge sends user data along with events. User data allows for a more accurate ad performance measurement.

Set User ID

User IDs refer to the user identifier used in a service. User IDs should be unique IDs that can identify unique users across websites and apps.

#{"width":"140px"}

Function

#{"width":"240px"}

Description

Airbridge.setUserID

Inputs the user ID.

Airbridge.clearUserID

Delete the user ID.

Airbridge.setUserAlias

Adds additional user identifiers. Up to 10 items can be added.
- key: Up to 128 characters. Must follow the regular expression ^[a-zA-Z_][a-zA-Z0-9_]*$.
- value: Up to 1024 characters.

Airbridge.removeUserAlias

Deletes only specified identifiers.

Airbridge.clearUserAlias

Deletes all additional user identifiers.

Refer to the example below.

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import 'package:airbridge_flutter_sdk/airbridge_flutter_sdk.dart';
...
// identifier
Airbridge.setUserID('string');
Airbridge.clearUserID();
// addtional identifier
Airbridge.setUserAlias(key: 'string', value: 'string');
Airbridge.removeUserAlias('string');
Airbridge.clearUserAlias();

Send additional user information

Attention

Sensitive user information may be included. Send after a thorough review with a legal advisor.

Send additional user information by setting user attributes.

#{"width":"140px"}

Function

#{"width":"240px"}

Description

Airbridge.setUserEmail

Inputs user's email. The data is hashed using SHA256.

Airbridge.clearUserEmail

Deletes the user email.

Airbridge.setUserPhone

Inputs user's phone number. The data is hashed using SHA256.

Airbridge.clearUserPhone

Deletes the user's phone number.

Airbridge.setUserAttribute

Adds additional user attributes. Up to 100 items can be added.

- key: Up to 128 characters. Must satisfy the regular expression: ^[a-zA-Z_][a-zA-Z0-9_]*$.

- value: Only supports string, number, and Boolean types. Up to 1024 characters.

Airbridge.removeUserAttribute

Deletes only specified attributes from the additional attributes.

Airbridge.clearUserAttributes

Deletes all additional user attributes.

Refer to the example below.

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import 'package:airbridge_flutter_sdk/airbridge_flutter_sdk.dart';
...
// email, phone
Airbridge.setUserEmail('string');
Airbridge.clearUserEmail();
Airbridge.setUserPhone('string');
Airbridge.clearUserPhone();
// addtional attribute
Airbridge.setUserAttribute(key: 'string', value: 'string');
Airbridge.setUserAttribute(key: 'number', value: 1000);
Airbridge.removeUserAttribute('string');
Airbridge.clearUserAttributes();

Hash user information

When the hashUserInformationEnabled function is set to false, user emails and phone numbers are passed without being hashed. The default setting is true.

Clear user data

You can reset user information with the Airbridge.clearUser function.

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import 'package:airbridge_flutter_sdk/airbridge_flutter_sdk.dart';
...
Airbridge.clearUser();

Additional SDK settings

Follow the instructions below for additional setup.

Attention

The instructions below are optional. Proceed only if necessary.

Note

The Airbridge Flutter SDK must be v4.1.2 or later.

The deep links received through the setOnDeeplinkReceived method of the AirbridgeFlutter SDK include not only Airbridge deep links but also deep links from other solutions.

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import 'package:airbridge_flutter_sdk/airbridge_flutter_sdk.dart';
...
Airbridge.setOnDeeplinkReceived((url) => {
    // show proper content using url
})

If you set isHandleAirbridgeDeeplinkOnly to true, only Airbridge deep links will be delivered through the setOnDeeplinkReceived callback. If you are using deep links from different solutions, you can handle the deep links separately.

Depending on the method of opening the link, it may be challenging to properly use the tracking link within the app.

By using the Airbridge.click function or the Airbridge.impression function, you can properly use the tracking link within the app without sending users to an external browser.

Attention

When you set up the Airbridge SDK to use tracking links within apps, every time a tracking link is used within the app, Deeplink Pageviews are aggregated as Target Events. The deep link performance may be affected when Deeplink Pageviews occur frequently right after Deeplink Opens.

The attribution window for Deeplink Pageviews is set to 3 days by default. If you want to change the attribution window for Deeplink Pageviews, contact your Airbridge CSM. If you don't have a designated CSM, contact the Airbridge Help Center.

Use attribution results

Attention

It takes some time for the Airbridge SDK to collect attribution results. We do not recommend using attribution results for functionalities requiring real-time processing.

Use the Airbridge.setOnAttributionReceived function to get the attribution data of install events.

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Airbridge.setAttributionListener((result) { 
    // do something
});

Depending on whether the attribution result exists or not, data is passed as follows.

When a user clicks a push notification, the deep link information in the payload should be passed to the Airbridge SDK to enable the collection of deep link events. Use the Airbridge.trackDeeplink function.

iOS

Add the following code to the ios/YOUR_PROJECT_NAME/AppDelegate.m file.

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import Airbridge

func application(
    _ application: UIApplication,
    didReceiveRemoteNotification userInfo: [AnyHashable : Any],
    fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void
) {
    if UIApplication.shared.applicationState == .inactive {
        let url = // 푸시 알림 페이로드의 딥링크

        Airbridge.trackDeeplink(url)
    }
}

func userNotificationCenter(
    _ center: UNUserNotificationCenter,
    didReceive response: UNNotificationResponse,
    withCompletionHandlercompletionHandler: @escaping () -> Void
) {
    if 
        UIApplication.shared.applicationState == .inactive || UIApplication.shared.applicationState == .background,
        response.actionIdentifier == UNNotificationDefaultActionIdentifier
    {
        let url = // 푸시 알림 페이로드의 딥링크

        Airbridge.trackDeeplink(url)
    }
}

Android

No setup is required as the events are automatically collected on Android.

The Airbridge SDK collects all types of deep link events regardless of the service that created the deep link. If deep link events are excessively collected, you can set the trackAirbridgeDeeplinkOnlyEnabled function to true so that only Airbridge deep links are collected.

Collect in-session lifecycle events

The Airbridge SDK collects Open and Foreground events that initiate a new session. These events are not collected during an ongoing session.

By setting the trackInSessionLifecycleEventEnabled function to true, you can collect Open and Foreground events during ongoing sessions.

All collected Foreground events are recorded as Open events.

Compliance with Google DMA

To comply with the Digital Markets Act (DMA), you must pass user consent data to Airbridge. For more information about the DMA and whether it applies to your service, see the Airbridge user guide.

If you are in the European Economic Area (EEA), you must always pass User Response information to Airbridge.

1. Determine the user's region from which they launched your app. If the user launched the app from the EEA region (eea=1), check whether you already have consent data. If you have collected consent data, proceed to step 3.

If the user launched the app from outside the EEA region, you don't need to collect consent data.

Note

Airbridge cannot provide guidance on storing the user consent data and implementing the prompts. For assistance, consult legal professionals.

2. If you don't have consent data, collect consent data through prompts, etc. The data you need to collect in this step is adPersonalization and adUserData.

3. Set the autoStartTrackingEnabled function to false.

4. After initializing the SDK, pass the consent data to the SDK, and call the startTracking function to collect events.

Attention

Take note of the following items.

  • Use the field names specified by Airbridge: eea, adPersonalization, and adUserData

  • Input 0 or 1 in accordance with the consent data collected.

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import 'package:airbridge_flutter_sdk/airbridge_flutter_sdk.dart';
...
// deliver informations to sdk using device alias
// based on actual region
Airbridge.setDeviceAlias(key: 'eea', value: '0' or '1');
// based on actual user consent
Airbridge.setDeviceAlias(key: 'adPersonalization', value: '0' or '1');
Airbridge.setDeviceAlias(key: 'adUserData', value: '0' or '1');
// start tracking explicitly
Airbridge.startTracking();

Follow the steps below to use deferred deep linking in Meta ads. The Airbridge SDK collects the Meta deferred app links first above others. If there are no Meta deferred app links, Airbridge deferred deep links are collected.

SKAdNetwork campaigns in Meta Ads do not support meta deferred app links.

1. Refer to the Meta ads document for iOS or Meta ads document for Android and install the Facebook SDK.

2. Set the trackMetaDeferredAppLinkEnabled function in the Airbridge SDK to true.

Initialize the Airbridge SDK in inactivate mode

Attention

If not activated immediately after the SDK initialization, the Install, Open, Deeplink events may not be collected.

When initializing the Airbridge SDK, all features are activated. By setting the sdkEnabled function to false, you can initialize the Airbridge SDK with all features in inactive mode.

You can also check the activation status of the Airbridge SDK in the following method and activate or deactivate all functions.

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import 'package:airbridge_flutter_sdk/airbridge_flutter_sdk.dart';
...
Airbridge.isSDKEnabled();
Airbridge.enableSDK();
Airbridge.disableSDK();

Set up Meta Install Referrer collection

This setup is required to collect the Meta Install Referrer. Send the Meta app ID to the metaInstallReferrerAppID function in the SDK initialization stage.

After the setup, you need to enter the decryption key into the Airbridge dashboard to view the decrypted Meta Install Referrer. Refer to this user guide to learn how to enter the decryption key.

Set up uninstall tracking

Airbridge sends a silent push every day between 3:00 PM and 4:00 PM (UTC) to users who performed an app event at least once in the last 6 months to check if the app has been deleted. You can check the uninstall event in the Airbridge reports and raw data export files.

Refer to the article below for the detailed setup instructions.

Integrate with third-party solutions

Additional SDK setup is required to integrate with some third-party solutions. It is recommended to complete the necessary SDK setup for integrating with third-party solutions before collecting data with the Airbridge SDK.

Refer to the articles listed below for integrating with third-party solutions.

SDK logs

The logs provided by the Airbridge SDK are categorized into Debug, Info, Warning, Error, and Fault levels. Debug level is the least critical log, while Fault level is the most critical log.

By default, the Airbridge SDK provides logs at Warning, Error, and Fault levels. If you input a log level using the setLogLevel function, you can view logs from that specified level up to the Fault level.

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