বাহ্যিক অফার প্রোগ্রামের জন্য ইন-অ্যাপ ইন্টিগ্রেশন নির্দেশিকা

val billingClient = BillingClient.newBuilder(context)
  .enableBillingProgram(BillingProgram.EXTERNAL_OFFER)
  .build()

private BillingClient billingClient = BillingClient.newBuilder(context)
    .enableBillingProgram(BillingProgram.EXTERNAL_OFFER)
    .build();

billingClient.isBillingProgramAvailableAsync(
  BillingProgram.EXTERNAL_OFFER,
  object : BillingProgramAvailabilityListener {
    override fun onBillingProgramAvailabilityResponse(
      billingResult: BillingResult,
      billingProgramAvailabilityDetails: BillingProgramAvailabilityDetails) {
        if (billingResult.responseCode !=  BillingResponseCode.OK) {
            // Handle failures such as retrying due to network errors,
            // handling external offers unavailable, etc.
            return
        }

        // External offers are available. Continue with steps in the
        // guide.
      }
  })

billingClient.isBillingProgramAvailableAsync(
  BillingProgram.EXTERNAL_OFFER,
  new BillingProgramAvailabilityListener() {
    @Override
    public void onBillingProgramAvailabilityResponse(
      BillingResult billingResult,
      BillingProgramAvailabilityDetails billingProgramAvailabilityDetails) {
        if (billingResult.getResponseCode() != BillingResponseCode.OK) {
            // Handle failures such as retrying due to network errors,
            // handling external offers being unavailable, etc.
            return;
        }
        // External offers are available. Continue with steps in the
        // guide.
      }
  });

val params =
  BillingProgramReportingDetailsParams.newBuilder()
    .setBillingProgram(BillingProgram.EXTERNAL_OFFER)
    .build();

billingClient.createBillingProgramReportingDetailsAsync(
  params,
  object : BillingProgramReportingDetailsListener {
    override fun onCreateBillingProgramReportingDetailsResponse(
      billingResult: BillingResult,
      billingProgramReportingDetails: BillingProgramReportingDetails?) {
        if (billingResult.responseCode !=  BillingResponseCode.OK) {
            // Handle failures such as retrying due to network errors.
            return
        }
        val externalTransactionToken =
            billingProgramReportingDetails?.externalTransactionToken
        // Persist the transaction token in your backend. You may pass it
        // to the external website when calling the launchExternalLink API.
    }
})

BillingProgramReportingDetailsParams params =
  BillingProgramReportingDetailsParams.newBuilder()
    .setBillingProgram(BillingProgram.EXTERNAL_OFFER)
    .build();

billingClient.createBillingProgramReportingDetailsAsync(
  params,
  new BillingProgramReportingDetailsListener() {
    @Override
    public void onCreateBillingProgramReportingDetailsResponse(
      BillingResult billingResult,
      @Nullable BillingProgramReportingDetails
        billingProgramReportingDetails) {
        if (billingResult.getResponseCode() != BillingResponseCode.OK) {
            // Handle failures such as retrying due to network errors.
            return;
        }

        String transactionToken =
          billingProgramReportingDetails.getExternalTransactionToken();
        // Persist the transaction token in your backend. You may pass it
        // to the external website when calling the launchExternalLink API.
      }
});

// An activity reference from which the external offers flow will be launched.
val activity = ...;

val params =
  LaunchExternalLinkParams.newBuilder()
    .setBillingProgram(BillingProgram.EXTERNAL_OFFER)
    // You can pass along the external transaction token from
    // BillingProgramReportingDetails as a URL parameter in the URI
    .setLinkUri(yourLinkUri)
    .setLinkType(LaunchExternalLinkParams.LinkType.LINK_TO_APP_DOWNLOAD)
    .setLaunchMode(
      LaunchExternalLinkParams.LaunchMode.LAUNCH_IN_EXTERNAL_BROWSER_OR_APP)
    .build()

val listener : LaunchExternalLinkResponseListener =
  LaunchExternalLinkResponseListener {
      override fun onLaunchExternalLinkResponse(billingResult: BillingResult) {
    if (billingResult.responseCode == BillingResponseCode.OK) {
      // Proceed with the rest of the external offer flow. If the user
      // purchases an item, be sure to report the transaction to Google Play.
    } else {
      // Handle failures such as retrying due to network errors.
    }
  }
}

billingClient.launchExternalLink(activity, params, listener)

// An activity reference from which the external offers flow will be launched.
Activity activity = ...;

LaunchExternalLinkParams params = LaunchExternalLinkParams.newBuilder()
  .setBillingProgram(BillingProgram.EXTERNAL_OFFER)
  // You can pass along the external transaction token from  
  // BillingProgramReportingDetails as a URL parameter in the URI
  .setLinkUri(yourLinkUri)
  .setLinkType(LaunchExternalLinkParams.LinkType.LINK_TO_APP_DOWNLOAD)
  .setLaunchMode(
    LaunchExternalLinkParams.LaunchMode.LAUNCH_IN_EXTERNAL_BROWSER_OR_APP)
  .build();

LaunchExternalLinkResponseListener listener =
  new LaunchExternalLinkResponseListener() {
    @Override
    public void onLaunchExternalLinkResponse(BillingResult billingResult) {
      if (billingResult.responseCode == BillingResponseCode.OK) {
        // Proceed with the rest of the external offer flow. If the user
        // purchases an item, be sure to report the transaction to Google
        // Play.
      } else {
        // Handle failures such as retrying due to network errors.
      }
    }
  }

billingClient.launchExternalLink(activity, params, listener);