Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 Copyright_License {
    
 XCSoar Glide Computer - http://www.xcsoar.org/
 Copyright (C) 2000-2016 The XCSoar Project
 A detailed list of copyright holders can be found in the file "AUTHORS".
    
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
 as published by the Free Software Foundation; either version 2
 of the License, or (at your option) any later version.
    
 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
    
 You should have received a copy of the GNU General Public License
 along with this program; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 }
 */

import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.util.Log;

public class Main {
    private static final String TAG = "XCSoar";
    private static final int STATE_UNKNOWN = 0;
    private static final int STATE_DISCONNECTED = 1;
    private static final int STATE_CONNECTED = 2;
    private static final int STATE_ROAMING = 3;
    private static ConnectivityManager cm;

    public static int getNetState() {
        if (cm == null)
            return STATE_UNKNOWN;

        try {
            NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
            if (activeNetwork == null || !activeNetwork.isConnected())
                return STATE_DISCONNECTED;

            if (activeNetwork.isRoaming())
                return STATE_ROAMING;

            return STATE_CONNECTED;
        } catch (Exception e) {
            /* java.lang.SecurityException can occur if
               android.permission.ACCESS_NETWORK_STATE is not given */
            Log.d(TAG, "ConnectivityManager failed", e);
            return STATE_UNKNOWN;
        }
    }
}