Subscription with the BillingService

[erossini]

Hi,
I like to use the implementation for the BillingService. I have a question about the Android implementation.

When the procedure reads the BillingClient.ProductType.Inapp, the list of products from the store is fine. In the Google Play Console, to define a subscription, there are 2 steps. In the first one, I define the name and Id of the subscription.

And then, I can define one or more plans.

When the query is built in the function GetPlatformProductsAsync for BillingService.Android.cs, I changed it like this code:

foreach (var product in baseProducts)
{
    var queryProduct = QueryProductDetailsParams.Product.NewBuilder()
        .SetProductId(product.Id)
        .SetProductType(BillingClient.ProductType.Subs)
        .Build();

    productList.Add(queryProduct);
}

The query find the main subscription (liuannual1) but not the plans (base1 and base12). How do I have to refer to them in order to find them?

[darrenf89]

@erossini I believe these are "Offers" in API.

You should be able to get the offer details using

var offer = skuDetails.GetSubscriptionOfferDetails()?.FirstOrDefault();
var offerToken = offer?.OfferToken;

and then if you wanted to launch the Sub with the offer if its there, I have used something like

            BillingFlowParams.ProductDetailsParams productDetailsParamsList;

            if (!string.IsNullOrEmpty(offerToken))
            {
                productDetailsParamsList = BillingFlowParams.ProductDetailsParams.NewBuilder()
                .SetProductDetails(skuDetails)
                .SetOfferToken(offerToken)
                .Build();
            }
            else
            {
                productDetailsParamsList = BillingFlowParams.ProductDetailsParams.NewBuilder()
                .SetProductDetails(skuDetails)
                .Build();
            }

            var billingFlowParams = BillingFlowParams.NewBuilder()
                .SetProductDetailsParamsList(new[] { productDetailsParamsList })
                .Build();

I can't remember the exacts of this and it may not be the best solution but it has worked for me. You should be able to play about with it a bit, when I was debugging it, I remember it all making sense and being easy enough to understand.