Preventing an android app being cloned by an app cloner

Question

Created an app that used the device's uniqueID which is fetched by the following code snippet

String deviceId = Settings.Secure.getString(getContentResolver(),
            Settings.Secure.ANDROID_ID);

When the user tries to clone the app by app cloner, then it creates a different deviceID and the app is not allowed to work

Is there any way to make our app non clonable or

Any possible way to have the same deviceId even if the app instance is cloned?

Is there any way to find out whether the app is running in a cloned instance?

Answer 1

I found a story in proandroiddev by Siddhant Panhalkar and with some minor changes it's work perfectly in Mi device I did checked in Mi phones default Dual apps and some third party apps from playstore and it prevents from cloning (means not working properly after clone).

private const val APP_PACKAGE_DOT_COUNT = 3 // number of dots present in package name
private const val DUAL_APP_ID_999 = "999"
private const val DOT = '.'

fun CheckAppCloning(activity: Activity) {
    val path: String = activity.filesDir.getPath()
    if (path.contains(DUAL_APP_ID_999)) {
        killProcess(activity)
    } else {
        val count: Int = getDotCount(path)
        if (count > APP_PACKAGE_DOT_COUNT) {
            killProcess(activity)
        }
    }
}
private fun getDotCount(path: String): Int {
    var count = 0
    for (element in path) {
        if (count > APP_PACKAGE_DOT_COUNT) {
            break
        }
        if (element == DOT) {
            count++
        }
    }
    return count
}

private fun killProcess(context: Activity) {
    context.finish()
    android.os.Process.killProcess( android.os.Process.myPid())
}