question

Hi Brightman55, Thank you for posting. 1. Yes, you can register the observer any where you want. But we recommend to do it in onStart() to get the best performance of IAP client installed in the devices. Please refer this link. https://developer.amazon.com/sdk/in-app-purchasing/documentation/developer-guide.html#IAP%20API 2. No. You can not have any customized payload in the purchase receipt.

Hi Are you planning to add "developer payload" feature to new in-app purchasing api (2.0) ?

We generally do not answer questions about future products or services, which this falls under. However, I'd be happy to forward this feedback/suggestion to the correct team. Could you please provide more information on the "developer payload" feature you are looking for? Thanks.

Developer Payload description copied from Google Play Store billing documentation: "you can include a 'developer payload' string token when sending your purchase request to Google Play. Typically, this is used to pass in a string token that uniquely identifies this purchase request. If you specify a string value, Google Play returns this string along with the purchase response. Subsequently, when you make queries about this purchase, Google Play returns this string together with the purchase details."