Android utility class for checking device's network connectivity and speed.

Connectivity.java

package com.jonathan.misc.utils;

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

/**
 * Check device's network connectivity and speed
 * @author emil http://stackoverflow.com/users/220710/emil
 *
 * Modified to specify abreviation for each type, removed isConnectedFast()
 */
public class Connectivity {

    public static final String ABBREV_1X = "1X";
    public static final String ABBREV_CDMA = "C?";
    public static final String ABBREV_EDGE = "E";
    public static final String ABBREV_EVDO = "3G";
    public static final String ABBREV_GPRS = "G";
    public static final String ABBREV_H = "H";
    public static final String ABBREV_U = "U";
    public static final String ABBREV_EVDOPLUS = ABBREV_EVDO + "+";
    public static final String ABBREV_HPLUS = ABBREV_H + "+";
    public static final String ABBREV_IDEN = "i";
    public static final String ABBREV_LTE = "LTE";
    public static final String ABBREV_UNKNOWN = "?";

    /**
     * Get the network info
     * @param context
     * @return
     */
    public static NetworkInfo getNetworkInfo(Context context){
        ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        return cm.getActiveNetworkInfo();
    }

    /**
     * Check if there is any connectivity
     * @param context
     * @return
     */
    public static boolean isConnected(Context context){
        NetworkInfo info = Connectivity.getNetworkInfo(context);
        return (info != null && info.isConnected());
    }

    /**
     * Check if there is any connectivity to a Wifi network
     * @param context
     * @return
     */
    public static boolean isConnectedWifi(Context context){
        NetworkInfo info = Connectivity.getNetworkInfo(context);
        return (info != null && info.isConnected() && info.getType() == ConnectivityManager.TYPE_WIFI);
    }

    /**
     * Check if there is any connectivity to a mobile network
     * @param context
     * @return
     */
    public static boolean isConnectedMobile(Context context){
        NetworkInfo info = Connectivity.getNetworkInfo(context);
        return (info != null && info.isConnected() && info.getType() == ConnectivityManager.TYPE_MOBILE);
    }

    /**
     * Get the appropriate connection abbreviation
     * @param context
     * @return
     */
    public static String getConnectionAbbreviation(Context context){
        NetworkInfo info = Connectivity.getNetworkInfo(context);
        boolean connected = (info != null) && (info.isConnected());
        if (!connected) {
            return " ";
        }
        return Connectivity.getConnectionAbbrev(info.getType(),info.getSubtype());
    }

    /**
     * Get the appropriate connection abbreviation
     * @param type
     * @param subType
     * @return
     */
    private static String getConnectionAbbrev(int type, int subType){
        if (type==ConnectivityManager.TYPE_WIFI) {
            return " ";
        } else if(type==ConnectivityManager.TYPE_MOBILE) {
            switch(subType){
                case TelephonyManager.NETWORK_TYPE_1xRTT:
                    return ABBREV_1X; // ~ 50-100 kbps
                case TelephonyManager.NETWORK_TYPE_CDMA:
                    return ABBREV_CDMA; // ~ 14-64 kbps
                case TelephonyManager.NETWORK_TYPE_EDGE:
                    return ABBREV_EDGE; // ~ 50-100 kbps
                case TelephonyManager.NETWORK_TYPE_EVDO_0:
                    return ABBREV_EVDO; // ~ 400-1000 kbps
                case TelephonyManager.NETWORK_TYPE_EVDO_A:
                    return ABBREV_EVDO; // ~ 600-1400 kbps
                case TelephonyManager.NETWORK_TYPE_GPRS:
                    return ABBREV_GPRS; // ~ 100 kbps
                case TelephonyManager.NETWORK_TYPE_HSDPA:
                    return ABBREV_H; // ~ 2-14 Mbps
                case TelephonyManager.NETWORK_TYPE_HSPA:
                    return ABBREV_H; // ~ 700-1700 kbps
                case TelephonyManager.NETWORK_TYPE_HSUPA:
                    return ABBREV_H; // ~ 1-23 Mbps
                case TelephonyManager.NETWORK_TYPE_UMTS:
                    return ABBREV_U; // ~ 400-7000 kbps
                case TelephonyManager.NETWORK_TYPE_EHRPD: // API level 11
                    return ABBREV_EVDOPLUS; // ~ 1-2 Mbps
                case TelephonyManager.NETWORK_TYPE_EVDO_B: // API level 9
                    return ABBREV_EVDOPLUS; // ~ 5 Mbps
                case TelephonyManager.NETWORK_TYPE_HSPAP: // API level 13
                    return ABBREV_HPLUS; // ~ 10-20 Mbps
                case TelephonyManager.NETWORK_TYPE_IDEN: // API level 8
                    return ABBREV_IDEN; // ~25 kbps
                case TelephonyManager.NETWORK_TYPE_LTE: // API level 11
                    return ABBREV_LTE; // ~ 10+ Mbps
                // Unknown
                case TelephonyManager.NETWORK_TYPE_UNKNOWN:
                default:
                    return ABBREV_UNKNOWN;
            }
        } else {
            return " ";
        }
    }
}