Google Play促銷代碼-每個促銷代碼一次使用或多次兌換 [英]Google Play Promo Codes - one time use or multiple redemptions per promo code
在我的應用程序運行時收聽 PURCHASES_UPDATED 以獲取兌換促銷代碼 [英]Listen for PURCHASES_UPDATED for redeem promo codes while my app is running
Google Play:如果用戶已經訂閱,可以申請促銷代碼延遲下一個付款日期嗎? [英]Google Play: if a user already has a subscription, can promo-code applying to delay the next payment date?