Using the Android SDK

This guide will help you implement Linkrunner functionality in your native Android application.

Initialization

Initialize the Linkrunner SDK in your application, typically in your Application class or main activity:

You can find your project token here.

import android.app.Application
import io.linkrunner.sdk.LinkRunner
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.launch

class MyApplication : Application() {
    override fun onCreate() {
        super.onCreate()

        // Initialize LinkRunner with SDK signing
        CoroutineScope(Dispatchers.IO).launch {
            try {
                val initResponse = LinkRunner.getInstance().init(
                    context = applicationContext,
                    token = "YOUR_PROJECT_TOKEN",
                    keyId = "YOUR_KEY_ID" // Required for SDK signing
                    secretKey = "YOUR_SECRET_KEY", // Required for SDK signing
                )

                initResponse.onSuccess { response ->
                    // Handle successful initialization
                    println("LinkRunner initialized successfully: $response")
                }.onFailure { error ->
                    // Handle initialization error
                    println("Error initializing LinkRunner: ${error.message}")
                }
            } catch (e: Exception) {
                println("Exception during initialization: ${e.message}")
            }
        }
    }
}

SDK Signing Parameters (Optional)

For enhanced security, the LinkRunner SDK requires the following signing parameters during initialization:

secretKey: A unique secret key used for request signing and authentication
keyId: A unique identifier for the key pair used in the signing process

You can find your project token, secret key, and key ID here.

Response from `init`

The initialization method returns useful data including:

data class InitResponse(
    val campaignData: ClientCampaignData? = null,
    val ipLocationData: IPLocationData? = null,
    val deeplink: String? = null,
    val rootDomain: Boolean? = null
)

User Registration

Call the signup method once after the user has completed your app’s onboarding process:

It is strongly recommended to use the integrated platform’s identify function to set a persistent user_id once it becomes available (typically after signup or login).

If the platform’s identifier function is not called, you must provide a user identifier for Mixpanel, PostHog, and Amplitude integration.

mixpanelDistinctId for Mixpanel
posthogDistinctId for PostHog
amplitudeDeviceId for Amplitude

private fun onSignup() {
    CoroutineScope(Dispatchers.IO).launch {
        try {
            val userData = UserDataRequest(
                id = "123", // Required: User ID
                name = "John Doe", // Optional
                phone = "9876543210", // Optional
                email = "user@example.com", // Optional
                mixpanelDistinctId = "mixpanel_distinct_id", // Optional - Mixpanel Distinct ID
                amplitudeDeviceId = "amplitude_device_id", // Optional - Amplitude User ID
                posthogDistinctId = "posthog_distinct_id" // Optional - PostHog Distinct ID
                userCreatedAt = "2024-01-01T00:00:00Z", // Optional
                isFirstTimeUser = true, // Optional
            )

            val result = LinkRunner.getInstance().signup(
                userData = userData,
                additionalData = mapOf("custom_field" to "custom_value") // Optional: Any additional data
            )

            result.onSuccess {
                println("Signup successful")
            }.onFailure { error ->
                println("Error during signup: ${error.message}")
            }
        } catch (e: Exception) {
            println("Exception during signup: ${e.message}")
        }
    }
}

Setting User Data

Call setUserData each time the app opens and the user is logged in:

private fun setUserData() {
    CoroutineScope(Dispatchers.IO).launch {
        try {
            val userData = UserDataRequest(
                id = "123", // Required: User ID
                name = "John Doe", // Optional
                phone = "9876543210", // Optional
                email = "user@example.com", // Optional
                mixpanelDistinctId = "mixpanel_distinct_id", // Optional - Mixpanel Distinct ID
                amplitudeDeviceId = "amplitude_device_id", // Optional - Amplitude User ID
                posthogDistinctId = "posthog_distinct_id" // Optional - PostHog Distinct ID
            )

            val result = LinkRunner.getInstance().setUserData(userData)

            result.onSuccess {
                println("User data set successfully")
            }.onFailure { error ->
                println("Error setting user data: ${error.message}")
            }
        } catch (e: Exception) {
            println("Exception setting user data: ${e.message}")
        }
    }
}

Tracking Custom Events

Track custom events in your app:

private fun trackEvent() {
    CoroutineScope(Dispatchers.IO).launch {
        try {
            val result = LinkRunner.getInstance().trackEvent(
                eventName = "purchase_initiated", // Event name
                eventData = mapOf( // Optional: Event data
                    "product_id" to "12345",
                    "category" to "electronics"
                )
            )

            result.onSuccess {
                println("Event tracked successfully")
            }.onFailure { error ->
                println("Error tracking event: ${error.message}")
            }
        } catch (e: Exception) {
            println("Exception tracking event: ${e.message}")
        }
    }
}

Revenue Tracking

Capturing Payments

Track payment information with the following details:

private fun capturePayment() {
    CoroutineScope(Dispatchers.IO).launch {
        try {
            val paymentData = CapturePaymentRequest(
                paymentId = "payment_123",  // Optional: Unique payment identifier
                userId = "user123",         // Required: User identifier
                amount = 99.99,              // Required: Payment amount
                type = PaymentType.FIRST_PAYMENT,  // Optional: Defaults to DEFAULT
                status = PaymentStatus.PAYMENT_COMPLETED  // Optional: Defaults to PAYMENT_COMPLETED
            )

            val result = LinkRunner.getInstance().capturePayment(paymentData)

            result.onSuccess {
                println("Payment captured successfully")
            }.onFailure { error ->
                println("Error capturing payment: ${error.message}")
            }
        } catch (e: Exception) {
            println("Exception capturing payment: ${e.message}")
        }
    }
}

Available Payment Types

Type	Description
`FIRST_PAYMENT`	User’s first payment
`WALLET_TOPUP`	Adding funds to wallet
`FUNDS_WITHDRAWAL`	Withdrawing funds
`SUBSCRIPTION_CREATED`	New subscription created
`SUBSCRIPTION_RENEWED`	Subscription renewal
`ONE_TIME`	One-time payment
`RECURRING`	Recurring payment
`DEFAULT`	Default payment type

Available Payment Statuses

Status	Description
`PAYMENT_INITIATED`	Payment process started
`PAYMENT_COMPLETED`	Payment successfully completed
`PAYMENT_FAILED`	Payment failed
`PAYMENT_CANCELLED`	Payment was cancelled

Removing Payments

To remove or refund a payment:

private fun removePayment() {
    CoroutineScope(Dispatchers.IO).launch {
        try {
            // Either paymentId or userId must be provided
            val removeRequest = RemovePaymentRequest(
                paymentId = "payment_123",  // Optional: Payment ID to remove
                userId = "user123"           // Optional: User ID to remove payments for
            )

            val result = LinkRunner.getInstance().removePayment(removeRequest)

            result.onSuccess {
                println("Payment removed successfully")
            }.onFailure { error ->
                println("Error removing payment: ${error.message}")
            }
        } catch (e: Exception) {
            println("Exception removing payment: ${e.message}")
        }
    }
}

Enhanced Privacy Controls

The SDK offers options to enhance user privacy:

// Enable PII (Personally Identifiable Information) hashing
LinkRunner.getInstance().enablePIIHashing(true)

// Check if PII hashing is enabled
val isHashingEnabled = LinkRunner.getInstance().isPIIHashingEnabled()

When PII hashing is enabled, sensitive user data like name, email, and phone number are hashed using SHA-256 before being sent to Linkrunner servers.

Function Placement Guide

Function	Where to Place	When to Call
`LinkRunner.getInstance().init`	Application class	Once when app starts
`LinkRunner.getInstance().signup`	Onboarding flow	Once after user completes onboarding
`LinkRunner.getInstance().setUserData`	Authentication logic	Every time app opens with logged-in user
`LinkRunner.getInstance().trackEvent`	Throughout app	When specific user actions occur
`LinkRunner.getInstance().capturePayment`	Payment processing	When user makes a payment
`LinkRunner.getInstance().removePayment`	Refund flow	When payment needs to be removed

Complete Example

Here’s a simplified example showing how to integrate Linkrunner in a native Android app:

You can find your project token here.

import android.app.Application
import android.os.Bundle
import androidx.appcompat.app.AppCompatActivity
import io.linkrunner.sdk.LinkRunner
import io.linkrunner.sdk.models.request.UserDataRequest
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.launch

class MyApplication : Application() {
    override fun onCreate() {
        super.onCreate()

        // Initialize LinkRunner with SDK signing
        CoroutineScope(Dispatchers.IO).launch {
            try {
                LinkRunner.getInstance().init(
                    context = applicationContext,
                    token = "YOUR_PROJECT_TOKEN",
                    secretKey = "YOUR_SECRET_KEY", // Required for SDK signing
                    keyId = "YOUR_KEY_ID" // Required for SDK signing
                )
            } catch (e: Exception) {
                println("Error initializing LinkRunner: ${e.message}")
            }
        }
    }
}

class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        // Button to track an event
        findViewById<android.widget.Button>(R.id.trackEventButton).setOnClickListener {
            trackCustomEvent()
        }
    }

    override fun onResume() {
        super.onResume()
        // Trigger deeplink when navigation is ready
        triggerDeeplink()

        // Set user data if user is logged in
        if (isUserLoggedIn()) {
            setUserData()
        }
    }

    private fun isUserLoggedIn(): Boolean {
        // Your login check logic
        return true
    }

    private fun setUserData() {
        CoroutineScope(Dispatchers.IO).launch {
            try {
                val userData = UserDataRequest(
                    id = "123",
                    name = "John Doe",
                    email = "user@example.com"
                )

                LinkRunner.getInstance().setUserData(userData)
            } catch (e: Exception) {
                println("Error setting user data: ${e.message}")
            }
        }
    }

    private fun triggerDeeplink() {
        CoroutineScope(Dispatchers.IO).launch {
            try {
                LinkRunner.getInstance().triggerDeeplink()
            } catch (e: Exception) {
                println("Error triggering deeplink: ${e.message}")
            }
        }
    }

    private fun trackCustomEvent() {
        CoroutineScope(Dispatchers.IO).launch {
            try {
                LinkRunner.getInstance().trackEvent(
                    eventName = "button_clicked",
                    eventData = mapOf("screen" to "main")
                )
            } catch (e: Exception) {
                println("Error tracking event: ${e.message}")
            }
        }
    }
}

Support

If you encounter issues during integration, contact us at darshil@linkrunner.io.

Getting Started

SDK Documentation

API Documentation

Features

Android Usage

Using the Android SDK

Initialization

SDK Signing Parameters (Optional)

Response from `init`

User Registration

Setting User Data

Tracking Custom Events

Revenue Tracking

Capturing Payments

Available Payment Types

Available Payment Statuses

Removing Payments

Enhanced Privacy Controls

Function Placement Guide

Complete Example

Support

Getting Started

SDK Documentation

API Documentation

Features

​Using the Android SDK

​Initialization

​SDK Signing Parameters (Optional)

​Response from init

​User Registration

​Setting User Data

​Tracking Custom Events

​Revenue Tracking

​Capturing Payments

​Available Payment Types

​Available Payment Statuses

​Removing Payments

​Enhanced Privacy Controls

​Function Placement Guide

​Complete Example

​Support

Using the Android SDK

Initialization

SDK Signing Parameters (Optional)

Response from `init`

User Registration

Setting User Data

Tracking Custom Events

Revenue Tracking

Capturing Payments

Available Payment Types

Available Payment Statuses

Removing Payments

Enhanced Privacy Controls

Function Placement Guide

Complete Example

Support