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

NetworkStateProvider.java

package theappdevelopers.networkutilstest.utils;

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

/**
 * Created by ivanwooll on 05/08/15.
 */
public class NetworkStateProvider {

    public static final int STATE_DISCONNECTED = 0;
    public static final int STATE_WIFI = 1;
    public static final int STATE_4G = 2;
    public static final int STATE_3G = 3;
    public static final int STATE_LEGACY = 4;
    public static final int STATE_UNKNOWN = 5;


    public static int getNetworkState(Context context) {
        if (!isConnected(context)) {
            return STATE_DISCONNECTED;
        }
        if (isConnectedWifi(context)) {
            return STATE_WIFI;
        }
        if (isFourGeeConnected(context)) {
            return STATE_4G;
        }
        if (isThreeGeeConnected(context)) {
            return STATE_3G;
        }
        if (isLegacyConnected(context)) {
            return STATE_LEGACY;
        }
        return STATE_UNKNOWN;
    }

    public static boolean isConnected(Context context) {
        NetworkInfo info = NetworkStateProvider.getNetworkInfo(context);
        return (info != null && info.isConnected());
    }

    public static NetworkInfo getNetworkInfo(Context context) {
        ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        return cm.getActiveNetworkInfo();
    }

    public static boolean isConnectedWifi(Context context) {
        NetworkInfo info = NetworkStateProvider.getNetworkInfo(context);
        return (info != null && info.isConnected() && info.getType() == ConnectivityManager.TYPE_WIFI);
    }

    public static boolean isFourGeeConnected(Context context) {
        NetworkInfo info = NetworkStateProvider.getNetworkInfo(context);
        return info.getSubtype() == TelephonyManager.NETWORK_TYPE_LTE;
    }

    public static boolean isThreeGeeConnected(Context context) {
        NetworkInfo info = NetworkStateProvider.getNetworkInfo(context);
        switch (info.getSubtype()) {
            case TelephonyManager.NETWORK_TYPE_HSPAP:
            case TelephonyManager.NETWORK_TYPE_UMTS:
            case TelephonyManager.NETWORK_TYPE_HSUPA:
            case TelephonyManager.NETWORK_TYPE_HSDPA:
                return true;
            default:
                return false;
        }
    }

    public static boolean isLegacyConnected(Context context) {
        NetworkInfo info = NetworkStateProvider.getNetworkInfo(context);
        switch (info.getSubtype()) {
            case TelephonyManager.NETWORK_TYPE_EDGE:
            case TelephonyManager.NETWORK_TYPE_GPRS:
            case TelephonyManager.NETWORK_TYPE_1xRTT:
            case TelephonyManager.NETWORK_TYPE_CDMA:
            case TelephonyManager.NETWORK_TYPE_EHRPD:
            case TelephonyManager.NETWORK_TYPE_EVDO_0:
            case TelephonyManager.NETWORK_TYPE_EVDO_A:
            case TelephonyManager.NETWORK_TYPE_EVDO_B:
            case TelephonyManager.NETWORK_TYPE_IDEN:
                return true;
            default:
                return false;
        }
    }
}