android 网络实时监听网络状态变化 及 网络类型判断

1. 网络类型判断

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TelephonyManager 中 定义常量值

public static final int NETWORK_TYPE_1xRTT = 7;

public static final int NETWORK_TYPE_CDMA = 4;

public static final int NETWORK_TYPE_EDGE = 2;

public static final int NETWORK_TYPE_EHRPD = 14;

public static final int NETWORK_TYPE_EVDO_0 = 5;

public 《Android学习笔记总结+最新移动架构视频+大厂安卓面试真题+项目实战源码讲义》无偿开源 徽信搜索公众号【编程进阶路】 static final int NETWORK_TYPE_EVDO_A = 6;

public static final int NETWORK_TYPE_EVDO_B = 12;

public static final int NETWORK_TYPE_GPRS = 1;

public static final int NETWORK_TYPE_HSDPA = 8;

public static final int NETWORK_TYPE_HSPA = 10;

public static final int NETWORK_TYPE_HSPAP = 15;

public static final int NETWORK_TYPE_HSUPA = 9;

public static final int NETWORK_TYPE_IDEN = 11;

public static final int NETWORK_TYPE_LTE = 13;

public static final int NETWORK_TYPE_UMTS = 3;

public static final int NETWORK_TYPE_UNKNOWN = 0;

public static int getNetworkType(Context context) {

ConnectivityManager connectMgr = (ConnectivityManager) context.getSystemService(

Context.CONNECTIVITY_SERVICE);

NetworkInfo info = connectMgr.getActiveNetworkInfo();

if (info != null) {

if (info.getType() == ConnectivityManager.TYPE_MOBILE) {

switch (info.getSubtype()) {

case TelephonyManager.NETWORK_TYPE_CDMA: // telcom

case TelephonyManager.NETWORK_TYPE_1xRTT: // telecom

case TelephonyManager.NETWORK_TYPE_GPRS: // unicom

case TelephonyManager.NETWORK_TYPE_EDGE: // cmcc

return NETWORK_TYPE_2G;

case TelephonyManager.NETWORK_TYPE_EHRPD: // telecom

case TelephonyManager.NETWORK_TYPE_EVDO_0: // telecom

case TelephonyManager.NETWORK_TYPE_EVDO_A: // telecom 3.5G

case TelephonyManager.NETWORK_TYPE_EVDO_B: // telecom 3.5G

case TelephonyManager.NETWORK_TYPE_HSPA: // unicom

case TelephonyManager.NETWORK_TYPE_HSPAP: // unicom

case TelephonyManager.NETWORK_TYPE_HSDPA: // unicom 3.5G

case TelephonyManager.NETWORK_TYPE_HSUPA: // unicom 3.5G

case TelephonyManager.NETWORK_TYPE_UMTS: // unicom

return NETWORK_TYPE_3G;

case TelephonyManager.NETWORK_TYPE_LTE:

return NETWORK_TYPE_4G;

}

} else if (info.getType() == ConnectivityManager.TYPE_WIFI) {

return NETWORK_TYPE_WIFI;

}

}

return NETWORK_TYPE_NONE;

}

public static final int NETWORK_TYPE_NONE = 0;

public static final int NETWORK_TYPE_2G = 2;

public static final int NETWORK_TYPE_3G = 3;

public static final int NETWORK_TYPE_4G = 4;

public static final int NETWORK_TYPE_WIFI = 10;

private String getNetType() {

int type = getNetworkType(mContext);

String netType = “”;

switch (type) {

case Utils.NETWORK_TYPE_NONE:

netType = “”;

break;

case Utils.NETWORK_TYPE_2G:

netType = “2G”;

break;

case Utils.NETWORK_TYPE_3G:

netType = “3G”;

break;

case Utils.NETWORK_TYPE_4G:

netType = “4G”;

break;

case Utils.NETWORK_TYPE_WIFI:

netType = “wifi”;

break;

}

return netType;

}