Android : in-app Billing problem- getting the order Id from the response

I am using In-App purchase in my application. I am successfully purchased the products. I am unable to get the order Id from the market response once the payment was made.anyone help me to retrieve the order开发者_JS百科 ID from the response from the market. kindly help.

Thanks in advance.

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purchase.getSignature()

I'm not sure this is what you're looking ,

but I use this to uniqe my order.

And this work fine for me.(With test account and signed APK)