android网络类型 Android获取当前手机网络类型（2g、3g、4g、wifi）以及手机型号、版本号代码

package com.iqtogether.qxueyou.support.util; 
import android.content.Context; 
import android.net.ConnectivityManager; 
import android.net.NetworkInfo; 
import android.telephony.TelephonyManager; 
/** 
* 获取网络连接的工具类 
* Created by chengguo on 2016/3/17. 
*/ 
public class IntenetUtil { 
//没有网络连接 
public static final int NETWORN_NONE = 0; 
//wifi连接 
public static final int NETWORN_WIFI = 1; 
//手机网络数据连接类型 
public static final int NETWORN_2G = 2; 
public static final int NETWORN_3G = 3; 
public static final int NETWORN_4G = 4; 
public static final int NETWORN_MOBILE = 5; 
/** 
* 获取当前网络连接类型 
* @param context 
* @return 
*/ 
public static int getNetworkState(Context context) { 
//获取系统的网络服务 
ConnectivityManager connManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); 
//如果当前没有网络 
if (null == connManager) 
return NETWORN_NONE; 
//获取当前网络类型，如果为空，返回无网络 
NetworkInfo activeNetInfo = connManager.getActiveNetworkInfo(); 
if (activeNetInfo == null || !activeNetInfo.isAvailable()) { 
return NETWORN_NONE; 
} 
// 判断是不是连接的是不是wifi 
NetworkInfo wifiInfo = connManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI); 
if (null != wifiInfo) { 
NetworkInfo.State state = wifiInfo.getState(); 
if (null != state) 
if (state == NetworkInfo.State.CONNECTED || state == NetworkInfo.State.CONNECTING) { 
return NETWORN_WIFI; 
} 
} 
// 如果不是wifi，则判断当前连接的是运营商的哪种网络2g、3g、4g等 
NetworkInfo networkInfo = connManager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE); 
if (null != networkInfo) { 
NetworkInfo.State state = networkInfo.getState(); 
String strSubTypeName = networkInfo.getSubtypeName(); 
if (null != state) 
if (state == NetworkInfo.State.CONNECTED || state == NetworkInfo.State.CONNECTING) { 
switch (activeNetInfo.getSubtype()) { 
//如果是2g类型 
case TelephonyManager.NETWORK_TYPE_GPRS: // 联通2g 
case TelephonyManager.NETWORK_TYPE_CDMA: // 电信2g 
case TelephonyManager.NETWORK_TYPE_EDGE: // 移动2g 
case TelephonyManager.NETWORK_TYPE_1xRTT: 
case TelephonyManager.NETWORK_TYPE_IDEN: 
return NETWORN_2G; 
//如果是3g类型 
case TelephonyManager.NETWORK_TYPE_EVDO_A: // 电信3g 
case TelephonyManager.NETWORK_TYPE_UMTS: 
case TelephonyManager.NETWORK_TYPE_EVDO_0: 
case TelephonyManager.NETWORK_TYPE_HSDPA: 
case TelephonyManager.NETWORK_TYPE_HSUPA: 
case TelephonyManager.NETWORK_TYPE_HSPA: 
case TelephonyManager.NETWORK_TYPE_EVDO_B: 
case TelephonyManager.NETWORK_TYPE_EHRPD: 
case TelephonyManager.NETWORK_TYPE_HSPAP: 
return NETWORN_3G; 
//如果是4g类型 
case TelephonyManager.NETWORK_TYPE_LTE: 
return NETWORN_4G; 
default: 
//中国移动 联通 电信 三种3G制式 
if (strSubTypeName.equalsIgnoreCase("TD-SCDMA") || strSubTypeName.equalsIgnoreCase("WCDMA") || strSubTypeName.equalsIgnoreCase("CDMA2000")) { 
return NETWORN_3G; 
} else { 
return NETWORN_MOBILE; 
} 
} 
} 
} 
return NETWORN_NONE; 
} 
}