How do I differentiate from which store app is installed from i.e Baidu Store / Google Play Store?

Question

My app. is deployed in Play Store as well as Baidu Store. For notificatiions, need to differentiate from where app. is installed.

When I used getInstallerPackageName() method, Redmi Note 3 returns correct value but HTC returns null.

Why is this difference observed ?

Is there any other better way ?

Answer 1

Regarding this answer: https://stackoverflow.com/a/13293534/2724879 i suggest that when its null then its from Baidu and when its com.android.vending then its from google xD