Android Question Price from in-app purchase

[aaronk]

Hi,

Is there a way to get the price for an in-app purchase before the user places the order ?

I haven't been able to work out how to do this in B4A, but have found a way based on Google's developer pages..

https://developer.android.com/training/in-app-billing/list-iab-products.html

 

[Erel]

See this post: https://www.b4x.com/android/forum/t...ce-and-price-currency-code.69734/#post-443049

 

[aaronk]

See this post: https://www.b4x.com/android/forum/t...ce-and-price-currency-code.69734/#post-443049

Where do I get version 1.15 from ?
I only have 1.11 and seem to only find 1.11 on the forum. That post talks about version 1.15.

Also, looking at that code, isn't that only getting the item/items the user has purchased ?

I want to be able to get the price value of the product before the customer places the order.

 

[Erel]

I've uploaded v1.15: https://www.b4x.com/android/forum/threads/in-app-billing-v3-library.29998/

Also, looking at that code, isn't that only getting the item/items the user has purchased ?

No. It returns the information about the store products.

 

[aaronk]

As the user hasn't yet purchased any products how does it know to return the price ?

when I run the code:

manager.GetOwnedProducts

It does nothing.

If I then enable the Debuglogging it say:

Calling getPurchases with continuation token: null
Owned items response: 0
Continuation token: null
Querying SKU details.
queryPrices: nothing to do because there are no SKUs.
Ending async operation: refresh inventory

I think it's saying that the user hasn't yet purchased any in-app purchases. (which is correct).

Before the user makes the order, I like to get the price of the in-app purchase from Google Play and show it in my app so the user knows how much that in app purchase is going to cost before they make that purchase.

I know when you do:

manager.RequestPayment("product_id_here")

It will display the price, but since I have multiple in app purchases the user can select, I like to display them in a list with the price showing so they can see the price from the list.

Think of it like purchasing credits for a game.
10 credits = $5
20 credit = $7
etc.

Rather than the user selecting each just to see the price, I like to have it in a list with the price showing so it's makes it easier to know which one to tap on.

Based on the link in the first post, https://developer.android.com/training/in-app-billing/list-iab-products.html
It shows how to receive this information at the bottom (Query Items Available for Purchase). Well I think it's showing what I am after.

Is there a way to get the price before the user places the order, other than that Google Play in app purchase popup asking for the payment?

 

[Erel]

I understand.

It does nothing.

Where is the OwnedProduct event sub? It must be raised.

 

[DonManfred]

I have the following in a code module

This does not work. Code Modules can not receive events.

Use a Service (Starter Service is a good Place for it) or a Class or an Activity.

 

[aaronk]

I have the following in a code module (Code Module Named: AppPurchase):

'Code module
'Subs in this code module will be accessible from all modules.
Sub Process_Globals
    'These global variables will be declared once when the application starts.
    'These variables can be accessed from all modules.
    Dim manager As BillingManager3
    Private key As String = "MIIBIjANBg.."
    Public PurchasesSupported As Boolean
End Sub
Sub Initialize
  
    ' in-App Billing - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    manager.Initialize("manager", key)
    manager.DebugLogging = True
  
    Log("** In-App Billing Initialize **")
End Sub

Sub Manager_OwnedProducts (Success As Boolean, Purchases As Map)
    Log("** Manager_OwnedProducts triggered **")
    If Success Then
        Dim skus As JavaObject = manager
        Dim items As List = skus.GetField("SkuDetails")
        For Each sku As JavaObject In items
            Log(sku.RunMethod("getSku", Null))
            Log(sku.RunMethod("getPrice", Null))
            Log(sku.RunMethod("getTitle", Null))
            Log(sku.RunMethod("getDescription", Null))
        Next
    End If
End Sub

Sub Manager_BillingSupported (Supported As Boolean, Message As String)
    Log(Supported & ", " & Message)
    Log("Subscriptions supported: " & manager.SubscriptionsSupported)
    PurchasesSupported = Supported
End Sub

Sub manager_PurchaseCompleted (Success As Boolean, Product As Purchase)
    Log("PurchaseCompleted = " & Success)
End Sub

In the starter service I am doing:

Sub Service_Create
    'This is the program entry point.
    'This is a good place to load resources that are not specific to a single activity.
    AppPurchase.Initialize
End Sub

On my Main Activity I have a button and when I press it I am using the following code:

AppPurchase.manager.GetOwnedProducts

Manager_OwnedProducts never gets triggered.

Here is the log when I run the app:
(I renamed the package name below while I post it on the forum)

*** Service (starter) Create ***
** In-App Billing Initialize **
** Service (starter) Start **
** Activity (main) Create, isFirst = true **
** Activity (main) Resume **
Billing service connected.
Checking for in-app billing 3 support.
In-app billing version 3 supported for my.app.name
Subscriptions AVAILABLE.
Starting async operation: refresh inventory
Querying owned items, item type: inapp
Package name: my.app.name
Calling getPurchases with continuation token: null
Owned items response: 0
Continuation token: null
Querying SKU details.
queryPrices: nothing to do because there are no SKUs.
Querying owned items, item type: subs
Package name: my.app.name
Calling getPurchases with continuation token: null
Owned items response: 0
Continuation token: null
Querying SKU details.
queryPrices: nothing to do because there are no SKUs.
Ending async operation: refresh inventory

 

[aaronk]

This does not work. Code Modules can not receive events.

Use a Service (Starter Service is a good Place for it) or a Class or an Activity.

I just used a class and initialized it in the service module.

Got the same result.

 

[aaronk]

Use a Service (Starter Service is a good Place for it)

Just tried the starter service, but still not working

 

[Erel]

The event sub should be in the same module where you call GetOwnedProducts. Put it in the main activity.

 

[aaronk]

The event sub should be in the same module where you call GetOwnedProducts. Put it in the main activity.

I got it to trigger that sub now.

Problem now is that it doesn't do anything.

When I run this code:

manager.GetOwnedProducts

It now triggers Manager_OwnedProducts.

Sub Manager_OwnedProducts (Success As Boolean, Purchases As Map)
    Log("** Manager_OwnedProducts triggered **")
    If Success Then

        Dim skus As JavaObject = manager

        Dim items As List = skus.GetField("SkuDetails")

        For Each sku As JavaObject In items

            Log("getSku = " & sku.RunMethod("getSku", Null))
            Log("getPrice = " & sku.RunMethod("getPrice", Null))
            Log("getTitle = " & sku.RunMethod("getTitle", Null))
            Log("getDescription = " & sku.RunMethod("getDescription", Null))

        Next

    End If

End Sub

In the Log it shows ** Manager_OwnedProducts triggered **

But that is all. Doesn't seem to log any of the other items in that sub.

** Activity (main) Pause, UserClosed = true **
*** Service (starter) Create ***
** In-App Billing Initialize **
** Service (starter) Start **
** Activity (main) Create, isFirst = true **
** Activity (main) Resume **
Billing service connected.
Checking for in-app billing 3 support.
In-app billing version 3 supported for my.app.name
Subscriptions AVAILABLE.
true, Setup successful. (response: 0:OK)
Subscriptions supported: true
Starting async operation: refresh inventory
Querying owned items, item type: inapp
Package name: my.app.name
Calling getPurchases with continuation token: null
Owned items response: 0
Continuation token: null
Querying SKU details.
queryPrices: nothing to do because there are no SKUs.
Querying owned items, item type: subs
Package name: my.app.name
Calling getPurchases with continuation token: null
Owned items response: 0
Continuation token: null
Querying SKU details.
queryPrices: nothing to do because there are no SKUs.
Ending async operation: refresh inventory
** Manager_OwnedProducts triggered **

 

[DonManfred]

But that is all. Doesn't seem to log any of the other items in that sub.

Sounds like success is FALSE. In this case the other code is not executed.
Try to run the code even if success is false.

 

[aaronk]

Try to run the code even if success is false.

I removed 'If Success Then' in the Manager_OwnedProducts sub and re-run the code but got the same result.
Is this what you mean ?

 

[aaronk]

I am finding I can't make in app purchases now. Comes up saying 'The item you requested is not available for your purchase'. This has only happened since updating the lib.

I wonder if this is why Manager_OwnedProducts is returning nothing ?

Can someone use the same version lib 1.15 and do a quick test and confirm if it should be working ?

Does anyone have version 1.11 of the inAppBilling3 available that they can post? I like to check and confirm if it then works with that version or if there is another issue.

 

[Erel]

I'm pretty sure that the error you are seeing is not related to the new version. I've checked the changes and they are only related to the extraction of SkuDetails.

If Success = False then there is a different problem which you need to first solve.

 

[aaronk]

I can now make purchases again but it still doesn't let me request the details of the in-app purchase before the user makes the purchase.

I have my app published as a beta app (no production app uploaded yet).
When I request for the payment using:

manager.RequestPayment("productid_is_here","inapp","aaa")

it pops up requesting for the payment (I never follow though with the payment).
So I know I have a in-app purchase available.

When I run the code:

manager.GetOwnedProducts

it returns nothing other than:

** Activity (main) Pause, UserClosed = true **
*** Service (starter) Create ***
** In-App Billing Initialize **
** Service (starter) Start **
** Activity (main) Create, isFirst = true **
** Activity (main) Resume **
Billing service connected.
Checking for in-app billing 3 support.
In-app billing version 3 supported for my.app.name
Subscriptions AVAILABLE.
true, Setup successful. (response: 0:OK)
Subscriptions supported: true
Starting async operation: refresh inventory
Querying owned items, item type: inapp
Package name: my.app.name
Calling getPurchases with continuation token: null
Owned items response: 0
Continuation token: null
Querying SKU details.
queryPrices: nothing to do because there are no SKUs.
Querying owned items, item type: subs
Package name: my.app.name
Calling getPurchases with continuation token: null
Owned items response: 0
Continuation token: null
Querying SKU details.
queryPrices: nothing to do because there are no SKUs.
Ending async operation: refresh inventory
** Manager_OwnedProducts triggered **

It triggers that OwnedProducts sub, but Success = False.

If Success = False then there is a different problem which you need to first solve.

Any ideas on where to start ?

I can confirm it allows me to purchase the item (as per the above), so I know there is a valid in-app product it should be returning, and since it allows me to purchase the item it is able to communicate to the Google Play store.

Since I haven't purchased any items yet, I guess this is why it's returning false or doesn't that matter if I have purchase a product or not ?

For testing, I now have just created a small demo project which I uploaded to Google Play as a production app to test it out.

I got the same result, where it allows the user to purchase the in-app purchase etc, but when I request GetOwnProducts it returns nothing. It seems to trigger the OwnedProducts sub but never any details about what products are available for purchase. So success is still returning False.

Either I am doing something wrong, or GetOwnProducts only returns the products the user has purchased and not what is available for purchase.

I have attached my demo project as an attached file to this post, hoping someone can see what I might of done wrong.

My In-App Purchase in Google Play looks like:
(I put a high amount for the in-app purchase so people don't follow though with the purchase while I testing it, if they do purchase it, well lucky me)

I have now unpublished the app as I didn't want anyone to download the app etc.

 

[Erel]

Have you downloaded the app from the store?

 

[aaronk]

Have you downloaded the app from the store?

yes, got the same result

 

[Erel]

Have you tried it with a different phone with a different account?