In-app billing: SampleApplication and store data in the database

Can somebody please explain me why Android's sample application stores data in the database only in onRestoreTransactionsResponse and not in onRequestPurchaseResponse?

Since it is done so I am not sure how to test my application - if I use standard product ID (android.test.purchased), then onRestoreTransactionsResponse is never called. If I use my own product id - I am getting error that purchases are not allowed (my app is uploaded to Android Market, but not published; product id is published).

(My application will support one product only 开发者_如何学C- 'paid version of application', probably I should use some different from the sample application approach?)

The explanation is available at PurchaseObserver file coming with Sample Application - onRequestPurchaseResponse:

/**
 * This is called when we receive a response code from Market for a
 * RequestPurchase request that we made.  This is NOT used for any
 * purchase state changes.  All purchase state changes are received in
 * {@link #onPurchaseStateChange(PurchaseState, String, int, long)}.
 * This is used for reporting various errors, or if the user backed out
 * and didn't purchase the item.  The possible response codes are:
 *   RESULT_OK means that the order was sent successfully to the server.
 *       The onPurchaseStateChange() will be invoked later (with a
 *       purchase state of PURCHASED or CANCELED) when the order is
 *       charged or canceled.  This response code can also happen if an
 *       order for a Market-managed item was already sent to the server.
 *   RESULT_USER_CANCELED means that the user didn't buy the item.
 *   RESULT_SERVICE_UNAVAILABLE means that we couldn't connect to the
 *       Android Market server (for example if the data connection is down).
 *   RESULT_BILLING_UNAVAILABLE means that in-app billing is not
 *       supported yet.
 *   RESULT_ITEM_UNAVAILABLE means that the item this app offered for
 *       sale does not exist (or is not published) in the server-side
 *       catalog.
 *   RESULT_ERROR is used for any other errors (such as a server error).

onRestoreTransactionsResponse is just about response to our request (not purchase status):

/**
 * This is called when we receive a response code from Android Market for a
 * RestoreTransactions request that we made.  A response code of
 * RESULT_OK means that the request was successfully sent to the server.
 */

If I call onRestoreTransactionsResponse, then onRequestPurchaseResponse is also called.

One thing to know, to be able to test your own items you have to create a signed apk of you app and install it manually on your device (it was working for me that way, otherwise I had the same error you had)

I hope it helps!