NetworkUtils.java

package com.yixia.camera.demo.utils;

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;
import android.telephony.TelephonyManager;

public class NetworkUtils {

	public static boolean isWifiAvailable(Context ctx) {
		ConnectivityManager manager = (ConnectivityManager) ctx
				.getSystemService(Context.CONNECTIVITY_SERVICE);
		return manager.getNetworkInfo(ConnectivityManager.TYPE_WIFI)
				.isConnected();
	}

	/**
	 * 检测网络连接是否可用
	 * 
	 * @param ctx
	 * @return true 可用; false 不可用
	 */
	public static boolean isNetworkAvailable(Context ctx) {
		ConnectivityManager cm = (ConnectivityManager) ctx
				.getSystemService(Context.CONNECTIVITY_SERVICE);
		if (cm == null) {
			return false;
		}
		try {
			NetworkInfo[] netinfo = cm.getAllNetworkInfo();
			if (netinfo == null) {
				return false;
			}
			for (NetworkInfo element : netinfo) {
				if (element.isConnected()) {
					return true;
				}
			}
		} catch (Exception ex) {

		}
		return false;
	}

	/**
	 * Get IP address from first non-localhost interface
	 * 
	 * @param ipv4
	 *            true=return ipv4, false=return ipv6
	 * @return address or empty string
	 */
	public static String getIPAddress(boolean useIPv4) {
		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 "";
	}

	public static String getNetworkTypeName(Context context) {
		if (context != null) {
			ConnectivityManager connectMgr = (ConnectivityManager) context
					.getSystemService(Context.CONNECTIVITY_SERVICE);
			if (connectMgr != null) {
				NetworkInfo info = connectMgr.getActiveNetworkInfo();
				if (info != null) {
					switch (info.getType()) {
					case ConnectivityManager.TYPE_WIFI:
						return "WIFI";
					case ConnectivityManager.TYPE_MOBILE:
						return getNetworkTypeName(info.getSubtype());
					}
				}
			}
		}
		return getNetworkTypeName(TelephonyManager.NETWORK_TYPE_UNKNOWN);
	}

	public static String getNetworkTypeName(int type) {
		switch (type) {
		case TelephonyManager.NETWORK_TYPE_GPRS:
			return "GPRS";
		case TelephonyManager.NETWORK_TYPE_EDGE:
			return "EDGE";
		case TelephonyManager.NETWORK_TYPE_UMTS:
			return "UMTS";
		case TelephonyManager.NETWORK_TYPE_HSDPA:
			return "HSDPA";
		case TelephonyManager.NETWORK_TYPE_HSUPA:
			return "HSUPA";
		case TelephonyManager.NETWORK_TYPE_HSPA:
			return "HSPA";
		case TelephonyManager.NETWORK_TYPE_CDMA:
			return "CDMA";
		case TelephonyManager.NETWORK_TYPE_EVDO_0:
			return "CDMA - EvDo rev. 0";
		case TelephonyManager.NETWORK_TYPE_EVDO_A:
			return "CDMA - EvDo rev. A";
		case TelephonyManager.NETWORK_TYPE_EVDO_B:
			return "CDMA - EvDo rev. B";
		case TelephonyManager.NETWORK_TYPE_1xRTT:
			return "CDMA - 1xRTT";
		case TelephonyManager.NETWORK_TYPE_LTE:
			return "LTE";
		case TelephonyManager.NETWORK_TYPE_EHRPD:
			return "CDMA - eHRPD";
		case TelephonyManager.NETWORK_TYPE_IDEN:
			return "iDEN";
		case TelephonyManager.NETWORK_TYPE_HSPAP:
			return "HSPA+";
		default:
			return "UNKNOWN";
		}
	}
}