安卓：判断当前使用的是什么网

public static void network(Context context)
{
   ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
   NetworkInfo info = connectivityManager.getActiveNetworkInfo();
   if (info.getType() == ConnectivityManager.TYPE_ETHERNET)
   {
   }
   else if (info.getType() == ConnectivityManager.TYPE_WIFI)
   {
   }
   else if (info.getType() == ConnectivityManager.TYPE_MOBILE)
   {
   }
}