Handler_Network.java

package com.android.pc.util;

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

/**
 * 网络工具类
 * @author gdpancheng@gmail.com 2013-10-22 下午1:08:35
 */
public class Handler_Network {
	/**
	 * 检测手机是否开启GPRS网络,需要调用ConnectivityManager,TelephonyManager 服务.
	 * 
	 * @param context
	 * @return boolean
	 */
	public static boolean checkGprsNetwork(Context context) {
		boolean has = false;
		ConnectivityManager connectivity = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
		TelephonyManager mTelephony = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
		NetworkInfo info = connectivity.getActiveNetworkInfo();
		int netType = info.getType();
		int netSubtype = info.getSubtype();
		if (netType == ConnectivityManager.TYPE_MOBILE && netSubtype == TelephonyManager.NETWORK_TYPE_UMTS && !mTelephony.isNetworkRoaming()) {
			has = info.isConnected();
		}
		return has;

	}

	/**
	 * 检测手机是否开启WIFI网络,需要调用ConnectivityManager服务.
	 * 
	 * @param context
	 * @return boolean
	 */
	public static boolean checkWifiNetwork(Context context) {
		boolean has = false;
		ConnectivityManager connectivity = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
		NetworkInfo info = connectivity.getActiveNetworkInfo();
		int netType = info.getType();
		int netSubtype = info.getSubtype();
		if (netType == ConnectivityManager.TYPE_WIFI) {
			has = info.isConnected();
		}
		return has;
	}

	/**
	 * 检测当前手机是否联网
	 * 
	 * @param context
	 * @return boolean
	 */
	public static boolean isNetworkAvailable(Context context) {
		ConnectivityManager connectivity = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
		if (connectivity == null) {
			return false;
		} else {
			NetworkInfo[] info = connectivity.getAllNetworkInfo();
			if (info != null) {
				for (int i = 0; i < info.length; i++) {
					if (info[i].getState() == NetworkInfo.State.CONNECTED) {
						return true;
					}
				}
			}
		}
		return false;
	}

	/**
	 * 手机是否处在漫游
	 * 
	 * @param mCm
	 * @return boolean
	 */
	public boolean isNetworkRoaming(Context mCm) {
		ConnectivityManager connectivity = (ConnectivityManager) mCm.getSystemService(Context.CONNECTIVITY_SERVICE);
		if (connectivity == null) {
			return false;
		}
		NetworkInfo info = connectivity.getActiveNetworkInfo();
		boolean isMobile = (info != null && info.getType() == ConnectivityManager.TYPE_MOBILE);
		TelephonyManager mTm = (TelephonyManager) mCm.getSystemService(Context.TELEPHONY_SERVICE);
		boolean isRoaming = isMobile && mTm.isNetworkRoaming();
		return isRoaming;
	}

}