如何制作Google Play捐赠应用程序以附加到免费版本？

Question

I have a app on the Google Play and I want to add a donation app. I could just put the same game on the market that's modified to say donation version but They wont have there saves from the free version. Is there a way for me to just create a .apk that apon run it will change say a boolean donated = true in the free version and then hide itself from app list. Or is there a way more easy way to do this?

Answer 1

You can share data between applications ie using sd card, named preferences, content providers. Other way to solve your problem is using in-app payments. The adventage is, that you do not need to mantain 2 code branches for free/paid apps. If we are talking about payments - take a look at Google Play's policy - in general they do not allow using other (cheaper) "payment processors".