updateSubscription
open fun updateSubscription(activity: Activity, newSubsId: String, oldPurchaseToken: String, replacementMode: AppPurchase.SubscriptionReplacementMode): String
Upgrades or downgrades a subscription.
Return
Result message.
Parameters
activity
The activity context.
newSubsId
The new subscription product ID.
oldPurchaseToken
The purchase token of the current subscription to replace.
replacementMode
The replacement mode (proration mode).