问题
I want to change the expiration date of a Subscription in my Play Store using the Play Store API.
I have a Mobile App where you can buy a renewal Play Store Subscription or you can get some time for free from Promos in app.
The main problem here is that if you have bought a subscription from the Play Store and you want to add time by a Promo in the application, I can't change the Renewal date of your subscription to handle this new time added into your Premium. So, the Play Store is going to renew your subscription and take the payment in a wrong date.
How can I handle this situation??
iOS CASE: iOS - App Store - Change expiration date of a subscription
回答1:
The solution for this problem, is use Defer. With this we can modify the next billing date, and move it to the future the days we need.
Documentation https://developers.google.com/android-publisher/api-ref/purchases/subscriptions/defer
来源：https://stackoverflow.com/questions/54058379/android-play-store-change-expiration-date-of-a-subscription