问题
There are several applications that allow to save a new credit card to a Google Pay. Upon pressing the button, the Google Pay opens with a credit card data pre-filled. However, I couldn't find any mentions of Intents or any API that allow to do that. How do I implement a "save credit/debit card to Google Pay" functionality inside an Android app?
回答1:
I don't think what you are after is directly supported.
One question that I have for you is why do you want to save the card? Is it for the purpose of making a payment or for storing it for later use?
If the purpose is to make a payment, then I would suggest integrating with the Google Pay Android APIs which will give the user the option to either select from an existing set of payment methods or add and save a new payment method for immediate use.
If the purpose is to save a card for later use and you also happen to be a card issuer, then you can achieve this with push provisioning. See answer here.
回答2:
In order to save a credit card detail, your app needs to comply with PCI compliance i.e. Payment Card Industry Data Security Standard (PCI DSS).
Here is checklist for PCI standards : https://www.akamai.com/us/en/resources/pci-compliance-checklist.jsp
In short, its not easy. Big industries do that and develop their own APIs and it takes thousands of dollars every month to remain compliant. Therefore, You will hardly find any open source API for saving credit card information.
来源：https://stackoverflow.com/questions/54576819/save-credit-card-to-google-pay