[android-developers] IABHelper, queryInventoryAsync returns 0 products but launchPurchaseFlow fails with Item Already Owned.

I'm experiencing an intermittent problem with In App Billing Version 3 using IABHelper as provided by Google.

Before Launching a new purchase I check for unconsumed purchases with queryInventoryAsync.  If found I consume any unconsumed purchases and begin a new transaction, if not go directly to start a new transaction. 99% of the time it works fine.

Occasionally when queryInventoryAsync returns no unconsumed purchases, the following launchPurchaseFlow fails with Response : 7: Item already owned.

2013/03/21-16:27:32:084 SH-12C 2.3.3 INFO [IABHelper] Starting async operation: refresh inventory

2013/03/21-16:27:32:087 SH-12C 2.3.3 INFO [IABHelper] Querying owned items, item type: inapp

2013/03/21-16:27:32:093 SH-12C 2.3.3 INFO [IABHelper] Package name: jp.co.gmode.gp.client.example.bjk

2013/03/21-16:27:32:095 SH-12C 2.3.3 INFO [IABHelper] Calling getPurchases with continuation token: null

2013/03/21-16:27:32:119 SH-12C 2.3.3 INFO [IABHelper] Owned items response: 0

2013/03/21-16:27:32:129 SH-12C 2.3.3 INFO [IABHelper] Continuation token: null

2013/03/21-16:27:32:132 SH-12C 2.3.3 INFO [IABHelper] Querying SKU details.

2013/03/21-16:27:32:134 SH-12C 2.3.3 INFO [IABHelper] queryPrices: nothing to do because there are no SKUs.

2013/03/21-16:27:32:135 SH-12C 2.3.3 INFO [IABHelper] Querying owned items, item type: subs

2013/03/21-16:27:32:137 SH-12C 2.3.3 INFO [IABHelper] Package name: jp.co.gmode.gp.client.example.bjk

2013/03/21-16:27:32:142 SH-12C 2.3.3 INFO [IABHelper] Calling getPurchases with continuation token: null

2013/03/21-16:27:32:167 SH-12C 2.3.3 INFO [IABHelper] Owned items response: 0

2013/03/21-16:27:32:169 SH-12C 2.3.3 INFO [IABHelper] Continuation token: null

2013/03/21-16:27:32:171 SH-12C 2.3.3 INFO [IABHelper] Querying SKU details.

2013/03/21-16:27:32:177 SH-12C 2.3.3 INFO [IABHelper] queryPrices: nothing to do because there are no SKUs.

2013/03/21-16:27:32:179 SH-12C 2.3.3 INFO [IABHelper] Ending async operation: refresh inventory

2013/03/21-16:27:33:034 SH-12C 2.3.3 INFO [IABHelper] Constructing buy intent for jp.co.gmode.gp.charginglibexample.100points, item type: inapp

2013/03/21-16:27:33:082 SH-12C 2.3.3 INFO [IABHelper] Launching buy intent for com.mydomain..myapp.myexampleproduct. Request code: 1001

2013/03/21-16:27:42:829 SH-12C 2.3.3 INFO [IABHelper] Ending async operation: launchPurchaseFlow

2013/03/21-16:27:42:831 SH-12C 2.3.3 INFO [IABHelper] Purchase canceled - Response: 7:Item Already Owned

queryInventoryAsync is saying the user does not own the item, but launchPurchaseFlow says the user does.

Strangely after a wait (sometimes a few minutes, sometimes more) the problem resolves itself.

Has anyone experienced anything similar?

For reference I'm using the version of IABHelper last updated on March 15.

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