I am in way to develop an android app in which we can open google wallet for payment through credit card etc.
I want to integrate google wallet in my android app to launch on a button click.
Here is my scenario:
I have to options one is Payment through credit card to another user account like money transfer and payment on purchase of any item.
Second is payment through online banking.
Can we use google wallet for the above functions?
The short answer is no, you cannot use Google Wallet on Android for third party money transfers. A Google Wallet transaction on Android can only take place between you (the merchant) and an user (the buyer).
Google Wallet is available on Android in two flavors.
In-app Billing - used to sell digital goods:
http://developer.android.com/google/play/billing/index.html
Instant Buy for Android - used to sell real goods and services:
https://developers.google.com/commerce/wallet/android-overview/
来源：https://stackoverflow.com/questions/17563128/google-wallet-integration-in-android-app