com.air.mobilebrowser.NetworkUtil.java Source code

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Here is the source code for com.air.mobilebrowser.NetworkUtil.java

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/********************************************************************************
* Educational Online Test Delivery System
* Copyright (c) 2015 American Institutes for Research
*
* Distributed under the AIR Open Source License, Version 1.0
* See accompanying file AIR-License-1_0.txt or at
* http://www.smarterapp.org/documents/American_Institutes_for_Research_Open_Source_Software_License.pdf
*********************************************************************************/
package com.air.mobilebrowser;

import java.net.InetAddress;
import java.net.NetworkInterface;
import java.util.Collections;
import java.util.List;

import org.apache.http.conn.util.InetAddressUtils;

import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;

public class NetworkUtil {
    public static String getIPAddress() {
        boolean useIPv4 = true;
        try {
            List<NetworkInterface> interfaces = Collections.list(NetworkInterface.getNetworkInterfaces());
            for (NetworkInterface intf : interfaces) {
                List<InetAddress> addrs = Collections.list(intf.getInetAddresses());
                for (InetAddress addr : addrs) {
                    if (!addr.isLoopbackAddress()) {
                        String sAddr = addr.getHostAddress().toUpperCase();
                        boolean isIPv4 = InetAddressUtils.isIPv4Address(sAddr);
                        if (useIPv4) {
                            if (isIPv4)
                                return sAddr;
                        } else {
                            if (!isIPv4) {
                                int delim = sAddr.indexOf('%'); // drop ip6 port suffix
                                return delim < 0 ? sAddr : sAddr.substring(0, delim);
                            }
                        }
                    }
                }
            }
        } catch (Exception ex) {
        } // for now eat exceptions

        return "";
    }

    /**
     * Check the current status of internet connectivity.
     * This method iterates over the available network interfaces and
     * checks for an active connection.
     * @return true if a connection was detected, false otherwise.
     */
    public static boolean haveInternetConnection(Context context) {
        if (context != null) {
            ConnectivityManager connectivityMgr = (ConnectivityManager) context
                    .getSystemService(Context.CONNECTIVITY_SERVICE);

            NetworkInfo wifiInfo = connectivityMgr.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
            NetworkInfo mobile = connectivityMgr.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
            NetworkInfo wimax = connectivityMgr.getNetworkInfo(ConnectivityManager.TYPE_WIMAX);
            NetworkInfo blue = connectivityMgr.getNetworkInfo(ConnectivityManager.TYPE_BLUETOOTH);
            NetworkInfo ether = connectivityMgr.getNetworkInfo(ConnectivityManager.TYPE_ETHERNET);

            boolean hasInternet = false;

            if (wifiInfo != null && wifiInfo.getState() == NetworkInfo.State.CONNECTED) {
                hasInternet = true;
            } else if (mobile != null && mobile.getState() == NetworkInfo.State.CONNECTED) {
                hasInternet = true;
            } else if (wimax != null && wimax.getState() == NetworkInfo.State.CONNECTED) {
                hasInternet = true;
            } else if (blue != null && blue.getState() == NetworkInfo.State.CONNECTED) {
                hasInternet = true;
            } else if (ether != null && ether.getState() == NetworkInfo.State.CONNECTED) {
                hasInternet = true;
            }

            return hasInternet;
        }

        return false;
    }
}