M.java

public static boolean isConnectionAvailable(Context context) {

        ConnectivityManager connectivityManager = (ConnectivityManager) context
                .getSystemService(Context.CONNECTIVITY_SERVICE);
        if (connectivityManager != null) {
            NetworkInfo netInfo = connectivityManager.getActiveNetworkInfo();
            if (netInfo != null && netInfo.isConnected()
                    && netInfo.isConnectedOrConnecting()
                    && netInfo.isAvailable()) {
                return true;
            }
        }
        return false;
    }

    public static void l(String TAG, String msg) {
        Log.d(TAG, msg);
    }
    public static void l(String TAG, Throwable e) {
        Log.e(TAG, "",e);
    }