i have a function that returns connectivity state of device and it works fine all the time except when device is connected to the VPN , it gives false Positive when network is not available
fun isConnected(): Boolean {
var result = false
val connectivityManager =
context.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
val networkCapabilities = connectivityManager.activeNetwork ?: return false
val actNw =
connectivityManager.getNetworkCapabilities(networkCapabilities) ?: return false
result = when {
actNw.hasTransport(NetworkCapabilities.TRANSPORT_WIFI) -> true
actNw.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) -> true
actNw.hasTransport(NetworkCapabilities.TRANSPORT_ETHERNET) -> true
actNw.hasTransport(NetworkCapabilities.TRANSPORT_VPN) -> true
else -> false
}
} else {
connectivityManager.run {
connectivityManager.activeNetworkInfo?.run {
result = when (type) {
ConnectivityManager.TYPE_WIFI -> true
ConnectivityManager.TYPE_MOBILE -> true
ConnectivityManager.TYPE_ETHERNET -> true
ConnectivityManager.TYPE_VPN -> true
else -> false
}
}
}
}
return result
}
If you want to confirm that your network has internet, you can't only test connectivityManager.activeNetwork and actNw.hasTransport.
connectivityManager.activeNetwork will return the VPN as it is the active network whether it has internet or not. actNw.hasTransport just lets you know the transport of the connection. If you don't care about the transport, you can probably remove that code completely.
What you should check for are NET_CAPABILITY_INTERNET and NET_CAPABILITY_VALIDATED.
Indicates that this network should be able to reach the internet.
Indicates that connectivity on this network was successfully validated. For example, for a network with NET_CAPABILITY_INTERNET, it means that Internet connectivity was successfully detected.
Therefore what you really need is to check if the active network has both of those capabilities to determine if you are connected to a network with internet connectivity.
actNw.hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET);
actNw.hasCapability(NetworkCapabilities.NET_CAPABILITY_VALIDATED);