Can I use different PurchaseObserver in one PurchaseManager for different screen?

[wangdong20]

Issue details, reproduction steps/code

I want to implement IAP in different screen, there may be slightly different UI updates in different screen. So my plan is implementing PurchaseObserver interface for each different screen but I will need to change PurchaseObserver for PurchaseManager in Game class in that case. Or should I just use different PurchaseManager for different screen?

Version of gdx-pay and/or relevant dependencies

1.3.7

Stacktrace

//Please provide the stacktrace if applicable 

Please select the affected platforms and payment service implementation

• [ ] Amazon
• [x] googlebilling
• [ ] googlepay
• [x] apple robovm
• [ ] Huawei