In app purchase displays message "you already own this item." in android

Question

I am trying to implement in-app. In android, in-app is working perfectly.But, when I remove the app from device and reinstall it, then after if I try to purchase, it displays this message (product is Managed and in-app API Version 2)

and in log, I have an error RESULT_DEVELOPER_ERROR , then I googled and I found the Version 3 has more number of response codes like BILLING_RESPONSE_RESULT_ITEM_ALREADY_OWNED

So if product is already purchased, the response must be like BILLING_RESPONSE_RESULT_ITEM_ALREADY_OWNED and this is not possible in Version 2.

Then what should I do ? Do I need to implement Version 3 ?

Answer 1

if you want force to buy product by every time then product should be Unmanaged.

Products can be of 3 types

1) Managed

2) Unmanaged

3) Subcription

Managed means google it self keep record. so by using same email id user not have to paid its charge e.g. remove ads

Unmanaged means user have to buy every time and will be a charged. e.g. Pocker chips

This 2 example i have read on developer site..

and refer http://developer.android.com/google/play/billing/billing_admin.html