通过 Android 提供的 TelephonyManager 和 ConnectivityManager 都可以获取到 NetworksInfo 对象，可以通过 getType() 获取类型，判断是 wifi 还是 mobile ，如果是 mobile ，可以通过 NetworksInfo 对象的 getSubType() 和 getSubTypeName() 可以获取到对于的网络类型和名字。转载请注明来自：http://www.binkery.com/
网络类型和名字定义在 TelephonyManager 类里。（源代码中有）
/** Network type is unknown */
public static final int NETWORK_TYPE_UNKNOWN = 0;
/** Current network is GPRS */
public static final int NETWORK_TYPE_GPRS = 1;
/** Current network is EDGE */
public static final int NETWORK_TYPE_EDGE = 2;
/** Current network is UMTS */
public static final int NETWORK_TYPE_UMTS = 3;
/** Current network is CDMA: Either IS95A or IS95B*/
public static final int NETWORK_TYPE_CDMA = 4;
/** Current network is EVDO revision 0*/
public static final int NETWORK_TYPE_EVDO_0 = 5;
/** Current network is EVDO revision A*/
public static final int NETWORK_TYPE_EVDO_A = 6;
/** Current network is 1xRTT*/
public static final int NETWORK_TYPE_1xRTT = 7;
/** Current network is HSDPA */
public static final int NETWORK_TYPE_HSDPA = 8;
/** Current network is HSUPA */
public static final int NETWORK_TYPE_HSUPA = 9;
/** Current network is HSPA */
public static final int NETWORK_TYPE_HSPA = 10;
/** Current network is iDen */
public static final int NETWORK_TYPE_IDEN = 11;
/** Current network is EVDO revision B*/
public static final int NETWORK_TYPE_EVDO_B = 12;
/** Current network is LTE */
public static final int NETWORK_TYPE_LTE = 13;
/** Current network is eHRPD */
public static final int NETWORK_TYPE_EHRPD = 14;
/** Current network is HSPA+ */
public static final int NETWORK_TYPE_HSPAP = 15;
那怎么判断是 2G ， 3G 还是 4G 网络呢？TelephonyManager 还提供了另外一个方法，getNetworkClass(int networkType) ，但这个方法被隐藏掉了，我把代码贴一下。
public static int getNetworkClass(int networkType) {
switch (networkType) {
case NETWORK_TYPE_GPRS:
case NETWORK_TYPE_EDGE:
case NETWORK_TYPE_CDMA:
case NETWORK_TYPE_1xRTT:
case NETWORK_TYPE_IDEN:
return NETWORK_CLASS_2_G;
case NETWORK_TYPE_UMTS:
case NETWORK_TYPE_EVDO_0:
case NETWORK_TYPE_EVDO_A:
case NETWORK_TYPE_HSDPA:
case NETWORK_TYPE_HSUPA:
case NETWORK_TYPE_HSPA:
case NETWORK_TYPE_EVDO_B:
case NETWORK_TYPE_EHRPD:
case NETWORK_TYPE_HSPAP:
return NETWORK_CLASS_3_G;
case NETWORK_TYPE_LTE:
return NETWORK_CLASS_4_G;
default:
return NETWORK_CLASS_UNKNOWN;
}
}
贴上我收集整理的一些资料，可以参考一下。
GPRS : 2G(2.5) General Packet Radia Service 114kbps
EDGE : 2G(2.75G) Enhanced Data Rate for GSM Evolution 384kbps
UMTS : 3G WCDMA 联通3G Universal Mobile Telecommunication System 完整的3G移动通信技术标准
CDMA : 2G 电信 Code Division Multiple Access 码分多址
EVDO_0 : 3G (EVDO 全程 CDMA2000 1xEV-DO) Evolution - Data Only (Data Optimized) 153.6kps - 2.4mbps 属于3G
EVDO_A : 3G 1.8mbps - 3.1mbps 属于3G过渡，3.5G
1xRTT : 2G CDMA2000 1xRTT (RTT - 无线电传输技术) 144kbps 2G的过渡,
HSDPA : 3.5G 高速下行分组接入 3.5G WCDMA High Speed Downlink Packet Access 14.4mbps
HSUPA : 3.5G High Speed Uplink Packet Access 高速上行链路分组接入 1.4 - 5.8 mbps
HSPA : 3G (分HSDPA,HSUPA) High Speed Packet Access
IDEN : 2G Integrated Dispatch Enhanced Networks 集成数字增强型网络 （属于2G，来自维基百科）
EVDO_B : 3G EV-DO Rev.B 14.7Mbps 下行 3.5G
LTE : 4G Long Term Evolution FDD-LTE 和 TDD-LTE , 3G过渡，升级版 LTE Advanced 才是4G
EHRPD : 3G CDMA2000向LTE 4G的中间产物 Evolved High Rate Packet Data HRPD的升级
HSPAP : 3G HSPAP 比 HSDPA 快些
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