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Editorial Team
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Asked: 2026-06-10T13:44:43+00:00

There was a similar subject here Okay. We can find out about user’s purchase

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There was a similar subject here

Okay. We can find out about user’s purchase using RESTORE_TRANSACTIONS request to Google Play.
But. It is written in documentation that
” You should use the RESTORE_TRANSACTIONS request type only when your application is installed for the first time on a device or when your application has been removed from a device and reinstalled.”
Why not after every start?
It looks comfortable and possible to query Google Play every time when the app starts.

Otherewise

1) I should store information about payment on my WEB server

2) Or I should save this info to sdcard. The record should be secure, including
device ID, so that copy on another device will not work

So. Which way is better?
Thanks.

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1 Answer

  1. Editorial Team

    I would suggest:

    3) Use the in-app Shared-Preferences Class or SQLite Database

    (Check this page: http://developer.android.com/guide/topics/data/data-storage.html)

    Encryption is always good, but this way the data is so to say attached to your application and can usually not be accessed by other apps.

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