How do I check if an app is a non-system app in Android?

Question

I am getting a list of ApplicationInfo Objects with packageManager.getInstalledApplications(0) and attempting to categorize them by whether or not they are a sy

Answer 1

You can use checkSignatures to determine if an app is a system app or not.

All system apps are signed with the same key.

https://developer.android.com/reference/android/content/pm/PackageManager#checkSignatures(java.lang.String,%20java.lang.String)

And signed with the system key is the "android" package.

    val checkPackage: String = "com.package.to.check"
    val systemPackageName = "android"
    if (packageManager.checkSignatures(systemPackageName, checkPackage) == PackageManager.SIGNATURE_MATCH) {
        Log.d("TUT", "System app")
    } else {
        Log.d("TUT", "Non-System app")
    }