Android Question In App Purchase question

[ilan]

hi

i am having a look at the inapp purchase example from erel here:

GooglePlayBilling - In App Purchases

GooglePlayBilling is based on the new in app purchases service: https://developer.android.com/google/play/billing/billing_library_overview Usage instructions: 1. Add to the manifest editor: CreateResourceFromFile(Macro, GooglePlayBilling.GooglePlayBilling) 2. Create a BillingClient object in...

www.b4x.com

and if i open the example i have this 2 events:

Private Sub RestorePurchases
    Wait For (billing.ConnectIfNeeded) Billing_Connected (Result As BillingResult)
    If Result.IsSuccess Then
        Wait For (billing.QueryPurchases("inapp")) Billing_PurchasesQueryCompleted (Result As BillingResult, Purchases As List)
        Log("Query completed: " & Result.IsSuccess)
        If Result.IsSuccess Then
            For Each p As Purchase In Purchases
                If p.Sku = ADS_SDK_ID Then HandleAdsPurchase(p)
            Next
        End If
    End If
End Sub

Private Sub HandleAdsPurchase (p As Purchase)
    If p.PurchaseState <> p.STATE_PURCHASED Then Return
    'Verify the purchase signature.
    'This cannot be done with the test id.
    If p.Sku.StartsWith("android.test") = False And billing.VerifyPurchase(p, BILLING_KEY) = False Then
        Log("Invalid purchase")
        Return
    End If
    If p.IsAcknowledged = False Then
        'we either acknowledge the product or consume it.
        Wait For (billing.AcknowledgePurchase(p.PurchaseToken, "")) Billing_AcknowledgeCompleted (Result As BillingResult)
        Log("Acknowledged: " & Result.IsSuccess)
    End If
    AdsRemoved = True
    Log("AdsRemoved")
    UpdateAdsState
End Sub

i used this example for years but now something is not clear to me.
you call the event: HandleAdsPurchase(p) if p.Sku = ADS_SDK_ID

then in handle purchase you say:

 If p.Sku.StartsWith("android.test") = False And billing.VerifyPurchase(p, BILLING_KEY) = False Then
        Log("Invalid purchase")
        Return
    End If

but should not it be:

 If p.Sku.StartsWith("android.test") = True And billing.VerifyPurchase(p, BILLING_KEY) = False Then
        Log("Invalid purchase")
        Return
    End If

???

only if the name of the inapp product is the one you are checking has been purchased false then invalid purchase but if you ask if the name is false then it will already be false because you called the HandleAdsPurchase(p) after the name mached the inapp purchase here:

  If p.Sku = ADS_SDK_ID Then HandleAdsPurchase(p)

looks wrong to me, or am i missing something??

 

[Erel]

It is a bit confusing but the code is correct. The comment explains it:

'Verify the purchase signature.
'This cannot be done with the test id.
If p.Sku.StartsWith("android.test") = False And billing.VerifyPurchase(p, BILLING_KEY) = False Then

You cannot verify android.test purchases, so only non-test ads are verified.

 

[ilan]

It is a bit confusing but the code is correct. The comment explains it:

'Verify the purchase signature.
'This cannot be done with the test id.
If p.Sku.StartsWith("android.test") = False And billing.VerifyPurchase(p, BILLING_KEY) = False Then

You cannot verify android.test purchases, so only non-test ads are verified.

thanx erel but now i am more confused.

in your example you set a const

Public const ADS_SDK_ID As String = "android.test.purchased"

and i understood that this is the in app ID so i changed it to my in app ID
and my code looks like this:

'Verify the purchase signature.
'This cannot be done with the test id.
If p.Sku.StartsWith("removeads") = False And billing.VerifyPurchase(p, BILLING_KEY) = False Then

do i need to leave this code with "android.test" ?

 

[Erel]

do i need to leave this code with "android.test" ?

Simply delete this section: p.Sku.StartsWith("removeads") = False
It is just the android.test ad that cannot be verified.

 

[ilan]

Thank you Erel, i will remove this code only