Android如何检测网络的类型为3G、2G、wap、wifi

转载地址: http://blog.csdn.net/nanzhiwen666/article/details/8288433

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) {
 elephonyManager 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;
     }