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Android判断网络状态

androidIT知识网络状态

【Android判断网络状态】世事洞明皆学问，人情练达即文章。这篇文章主要讲述Android判断网络状态相关的知识，希望能为你提供帮助。
别人写好的分享一下

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; } }}

 

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