关于Android如何检测网络的类型，网上代码很多，但是有用的精品不多，前段时间，因为做项目需要涉及到具体网络类型的检查，特别是区分2G网络是为wap，还是net,类型，因为wap类型，需要配置代理上网，基于此，我将自己实现的过程代码记录下来：
1、定义常量来标识几种网络类型
/** 没有网络 */ public static final int NETWORKTYPE_INVALID = 0; /** wap网络 */ public static final int NETWORKTYPE_WAP = 1; /** 2G网络 */ public static final int NETWORKTYPE_2G = 2; /** 3G和3G以上网络，或统称为快速网络 */ public static final int NETWORKTYPE_3G = 3; /** wifi网络 */ public static final int NETWORKTYPE_WIFI = 4;
2、判断是否是FastMobileNetWork，将3G或者3G以上的网络称为快速网络
private static boolean isFastMobileNetwork(Context context) { TelephonyManager telephonyManager = (TelephonyManager)context.getSystemService(Context.TELEPHONY_SERVICE); switch (telephonyManager.getNetworkType()) { case TelephonyManager.NETWORK_TYPE_1xRTT: return false; // ~ 50-100 kbps case TelephonyManager.NETWORK_TYPE_CDMA: return false; // ~ 14-64 kbps case TelephonyManager.NETWORK_TYPE_EDGE: return false; // ~ 50-100 kbps case TelephonyManager.NETWORK_TYPE_EVDO_0: return true; // ~ 400-1000 kbps case TelephonyManager.NETWORK_TYPE_EVDO_A: return true; // ~ 600-1400 kbps case TelephonyManager.NETWORK_TYPE_GPRS: return false; // ~ 100 kbps case TelephonyManager.NETWORK_TYPE_HSDPA: return true; // ~ 2-14 Mbps case TelephonyManager.NETWORK_TYPE_HSPA: return true; // ~ 700-1700 kbps case TelephonyManager.NETWORK_TYPE_HSUPA: return true; // ~ 1-23 Mbps case TelephonyManager.NETWORK_TYPE_UMTS: return true; // ~ 400-7000 kbps case TelephonyManager.NETWORK_TYPE_EHRPD: return true; // ~ 1-2 Mbps case TelephonyManager.NETWORK_TYPE_EVDO_B: return true; // ~ 5 Mbps case TelephonyManager.NETWORK_TYPE_HSPAP: return true; // ~ 10-20 Mbps case TelephonyManager.NETWORK_TYPE_IDEN: return false; // ~25 kbps case TelephonyManager.NETWORK_TYPE_LTE: return true; // ~ 10+ Mbps case TelephonyManager.NETWORK_TYPE_UNKNOWN: return false; default: return false; } }
3、获取网络类型是否是2G、3G、wap、wifi等
/** * 获取网络状态，wifi,wap,2g,3g. * * @param context 上下文 * @return int 网络状态 {@link #NETWORKTYPE_2G},{@link #NETWORKTYPE_3G}, *{@link #NETWORKTYPE_INVALID},{@link #NETWORKTYPE_WAP}* <p>{@link #NETWORKTYPE_WIFI} */ public static int getNetWorkType(Context context) { ConnectivityManager manager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo networkInfo = manager.getActiveNetworkInfo(); if (networkInfo != null && networkInfo.isConnected()) { String type = networkInfo.getTypeName(); if (type.equalsIgnoreCase("WIFI")) { mNetWorkType = NETWORKTYPE_WIFI; } else if (type.equalsIgnoreCase("MOBILE")) { String proxyHost = android.net.Proxy.getDefaultHost(); mNetWorkType = TextUtils.isEmpty(proxyHost) ? (isFastMobileNetwork(context) ? NETWORKTYPE_3G : NETWORKTYPE_2G) : NETWORKTYPE_WAP; } } else { mNetWorkType = NETWORKTYPE_INVALID; } return mNetWorkType; }