private void LaunchBilling(SkuDetails sku, Activity parent)
{
Log.Debug(TAG, "LaunchBilling()");
BillingFlowParams billingFlowParams = BillingFlowParams.NewBuilder()
.SetSkuDetails(sku)
.Build();
billingClient.LaunchBillingFlow(parent, billingFlowParams);
}
/// <summary>
/// Completes the Purchase
/// </summary>
/// <param name="product"></param>
/// <returns></returns>
private async Task <PurchaseResult> DoPurchaseAsync(SkuDetails product)
{
if (BillingClient == null || !BillingClient.IsReady)
{
await ConnectAsync();
}
_tcsPurchase = new TaskCompletionSource <PurchaseResult>();
BillingFlowParams flowParams = BillingFlowParams.NewBuilder().SetSkuDetails(product).Build();
BillingResult responseCode = BillingClient.LaunchBillingFlow(CrossCurrentActivity.Current.Activity, flowParams);
return(await _tcsPurchase?.Task ?? default);
}
/// <summary>
/// Initializes an async process to purchas the product. Only one purchase request can be happening at a time
/// </summary>
/// <param name="productId">Product to buy</param>
/// <returns>Purchase object</returns>
public async Task <InAppPurchaseResult> PurchaseAsync(string productId)
{
if (_billingClient == null || !_billingClient.IsReady)
{
throw new InAppPurchaseException(PurchaseError.DeveloperError, "Billing Client is not connected");
}
// Make sure no purchases are being currently made
if (_transactionPurchased != null && !_transactionPurchased.Task.IsCanceled)
{
throw new InAppPurchaseException(PurchaseError.DeveloperError, "Another Purchase is in progress");
}
// First, get the SkuDetail
SkuDetails sku;
if (!_retrievedProducts.TryGetValue(productId, out sku))
{
throw new InAppPurchaseException(PurchaseError.DeveloperError,
$"Cannot find a retrieved Product with {productId} SKU. Products must be first queried from the Play Store");
}
// Build FlowParam for the Purchase
BillingFlowParams flowParams = BillingFlowParams.NewBuilder()
.SetSkuDetails(sku)
.Build();
// Set a new Task Source to wait for completion
_transactionPurchased = new TaskCompletionSource <InAppPurchaseResult>();
Task <InAppPurchaseResult> taskPurchaseComplete = _transactionPurchased.Task;
//_billingClient.QueryPurchaseHistoryAsync(BillingClient.SkuType.Inapp, this);
// Initiate the Billing Process.
BillingResult response = _billingClient.LaunchBillingFlow(_activity, flowParams);
if (response.ResponseCode != BillingResponseCode.Ok)
{
// Reset the in-app-purchase flow
_transactionPurchased?.TrySetCanceled();
_transactionPurchased = null;
throw new InAppPurchaseException(response.ResponseCode.ToPurchaseError(), response.DebugMessage);
}
// Wait till the Task is complete (e.g. Succeeded or Failed - which will result in Exception)
InAppPurchaseResult purchase = await taskPurchaseComplete;
_transactionPurchased = null;
return(purchase);
}
