Android：获取有关应用购买的信息

Question

Is there any android api to get information about the purchase of the app? I don't talk about in-app purchases. Just the Plain APP-Purchase.

I need any unique identifier like an transaction id or something like that.

Answer 1

As per my understanding of question you want to get information of your app buyers or you want to check particular user's purchase status for your app.

AFAIK : As of now I can't able to see any buyers info for your android application purchase. Reference : https://support.google.com/googleplay/android-developer/answer/6056620?hl=en

But in past may be we were able to see such information. Reference : Android Market (Google Play). Get buyer information

Answer 2

As far as I know there is no way to persist this information across app uninstall/reinstalls. You can get the installation timestamp but this will be reset when reinstalling.

However, a workable solution may be to set a flag in SharedPreferences and save the data using Android Backup ( http://developer.android.com/guide/topics/data/backup.html#SharedPreferences )

Answer 3

As mentioned in other answers, it looks like there's no public API for it. (I believe, the reason for it is that by default - once user starts the app - he has already got if from Google Play. So in the ideal world, there should be no need for this check)

If I were you, I'd implement some tiny API endpoint on your server side and sends it hashed version of the user's accountId (see Accessing Google Account Id /username via Android ) and Timestamp-response(or any other reasonable data back) of initial call of this method for this particular user Id (ie once he changed his phone - you'll still track him).

To get current Account do this:

    Account[] accounts = AccountManager.get(this).getAccountsByType("com.google"); 
    if (accounts.length != 0) {
         String myEmailid=accounts[0].toString();
    }

(taken from here )

Tested on API 19 and API 23 (In Android M it requires a bit extra work due to permission-check)

Answer 4

最可靠的方法是创建您自己的（网络）服务，并使用Google用户名注册该应用程序（ 如何在Android手机上检索已登录的Google帐户？ ），然后在以后重新安装时检查其注册情况。