How to start FTP sever under 4g network

[sdaduanbilei]

RT

 if (!isConnectedToLocalNetwork()) {
            Log.w(TAG, "run: There is no local network, bailing out");
            stopSelf();
            sendBroadcast(new Intent(ACTION_FAILEDTOSTART));
            return;
        }

public static boolean isConnectedToLocalNetwork() {
        boolean connected = false;
        Context context = App.getAppContext();
        ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo ni = cm.getActiveNetworkInfo();
        connected = ni != null
                && ni.isConnected()
                && (ni.getType() & (ConnectivityManager.TYPE_WIFI | ConnectivityManager.TYPE_ETHERNET)) != 0;
        if (!connected) {
            Log.d(TAG, "isConnectedToLocalNetwork: see if it is an WIFI AP");
            WifiManager wm = (WifiManager) context.getApplicationContext().getSystemService(Context.WIFI_SERVICE);
            try {
                Method method = wm.getClass().getDeclaredMethod("isWifiApEnabled");
                connected = (Boolean) method.invoke(wm);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        if (!connected) {
            Log.d(TAG, "isConnectedToLocalNetwork: see if it is an USB AP");
            try {
                List<NetworkInterface> networkInterfaces = Collections.list(NetworkInterface.getNetworkInterfaces());
                for (NetworkInterface netInterface : networkInterfaces) {
                    if (netInterface.getDisplayName().startsWith("rndis")) {
                        connected = true;
                    }
                }
            } catch (SocketException e) {
                e.printStackTrace();
            }
        }
        return connected;
    }

[sdaduanbilei]

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