Android判斷網路狀態

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別人寫好的分享一下

 public static class NetWork {        public static final String NETWORK_TYPE_WIFI = "wifi";        public static final String NETWORK_TYPE_3G = "eg";        public static final String NETWORK_TYPE_2G = "2g";        public static final String NETWORK_TYPE_WAP = "wap";        public static final String NETWORK_TYPE_UNKNOWN = "unknown";        public static final String NETWORK_TYPE_DISCONNECT = "disconnect";        public static int getNetworkType(Context context) {            ConnectivityManager connectivityManager = (ConnectivityManager) context                    .getSystemService(Context.CONNECTIVITY_SERVICE);            NetworkInfo networkInfo = connectivityManager == null ? null : connectivityManager.getActiveNetworkInfo();            return networkInfo == null ? -1 : networkInfo.getType();        }        public static String getNetworkTypeName(Context context) {            ConnectivityManager manager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);            NetworkInfo networkInfo;            String type = NETWORK_TYPE_DISCONNECT;            if (manager == null || (networkInfo = manager.getActiveNetworkInfo()) == null) {                return type;            }            if (networkInfo.isConnected()) {                String typeName = networkInfo.getTypeName();                if ("WIFI".equalsIgnoreCase(typeName)) {                    type = NETWORK_TYPE_WIFI;                } else if ("MOBILE".equalsIgnoreCase(typeName)) {                    String proxyHost = android.net.Proxy.getDefaultHost();                    type = TextUtils.isEmpty(proxyHost) ? (isFastMobileNetwork(context) ? NETWORK_TYPE_3G : NETWORK_TYPE_2G)                            : NETWORK_TYPE_WAP;                } else {                    type = NETWORK_TYPE_UNKNOWN;                }            }            return type;        }        private static boolean isFastMobileNetwork(Context context) {            TelephonyManager telephonyManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);            if (telephonyManager == null) {                return false;            }            switch (telephonyManager.getNetworkType()) {                case TelephonyManager.NETWORK_TYPE_1xRTT:                    return false;                case TelephonyManager.NETWORK_TYPE_CDMA:                    return false;                case TelephonyManager.NETWORK_TYPE_EDGE:                    return false;                case TelephonyManager.NETWORK_TYPE_EVDO_0:                    return true;                case TelephonyManager.NETWORK_TYPE_EVDO_A:                    return true;                case TelephonyManager.NETWORK_TYPE_GPRS:                    return false;                case TelephonyManager.NETWORK_TYPE_HSDPA:                    return true;                case TelephonyManager.NETWORK_TYPE_HSPA:                    return true;                case TelephonyManager.NETWORK_TYPE_HSUPA:                    return true;                case TelephonyManager.NETWORK_TYPE_UMTS:                    return true;                case TelephonyManager.NETWORK_TYPE_EHRPD:                    return true;                case TelephonyManager.NETWORK_TYPE_EVDO_B:                    return true;                case TelephonyManager.NETWORK_TYPE_HSPAP:                    return true;                case TelephonyManager.NETWORK_TYPE_IDEN:                    return false;                case TelephonyManager.NETWORK_TYPE_LTE:                    return true;                case TelephonyManager.NETWORK_TYPE_UNKNOWN:                    return false;                default:                    return false;            }        }    }

 

Android判斷網路狀態