Android端如何获取手机当前的网络状态,比如wifi还是3G, 还是2G, 电信还是联通,还是移动
不多说了,直接看代码, NB人会懂的!view plaincopy
[*]package com.example.vdisktest;
[*]
[*]import android.app.Activity;
[*]import android.content.Context;
[*]import android.database.Cursor;
[*]import android.net.ConnectivityManager;
[*]import android.net.NetworkInfo;
[*]import android.net.Uri;
[*]import android.os.Bundle;
[*]import android.telephony.TelephonyManager;
[*]import android.text.TextUtils;
[*]import android.util.Log;
[*]
[*]public class NetTypeActivity extends Activity {
[*]
[*] /** Called when the activity is first created. */
[*] public static final String CTWAP = "ctwap";
[*] public static final String CTNET = "ctnet";
[*] public static final String CMWAP = "cmwap";
[*] public static final String CMNET = "cmnet";
[*] public static final String NET_3G = "3gnet";
[*] public static final String WAP_3G = "3gwap";
[*] public static final String UNIWAP = "uniwap";
[*] public static final String UNINET = "uninet";
[*]
[*] public static final int TYPE_CT_WAP = 5;
[*] public static final int TYPE_CT_NET = 6;
[*] public static final int TYPE_CT_WAP_2G = 7;
[*] public static final int TYPE_CT_NET_2G = 8;
[*]
[*] public static final int TYPE_CM_WAP = 9;
[*] public static final int TYPE_CM_NET = 10;
[*] public static final int TYPE_CM_WAP_2G = 11;
[*] public static final int TYPE_CM_NET_2G = 12;
[*]
[*] public static final int TYPE_CU_WAP = 13;
[*] public static final int TYPE_CU_NET = 14;
[*] public static final int TYPE_CU_WAP_2G = 15;
[*] public static final int TYPE_CU_NET_2G = 16;
[*]
[*] public static final int TYPE_OTHER = 17;
[*]
[*] public static Uri PREFERRED_APN_URI = Uri
[*] .parse("content://telephony/carriers/preferapn");
[*]
[*] /** 没有网络 */
[*] public static final int TYPE_NET_WORK_DISABLED = 0;
[*]
[*] /** wifi网络 */
[*] public static final int TYPE_WIFI = 4;
[*]
[*] @Override
[*] public void onCreate(Bundle savedInstanceState) {
[*] super.onCreate(savedInstanceState);
[*] setContentView(R.layout.activity_main);
[*] long start = System.currentTimeMillis();
[*] int checkNetworkType = checkNetworkType(this);
[*] Log.i("NetType", "===========elpase:"
[*] + (System.currentTimeMillis() - start));
[*]
[*] switch (checkNetworkType) {
[*] case TYPE_WIFI:
[*] Log.i("NetType", "================wifi");
[*] break;
[*] case TYPE_NET_WORK_DISABLED:
[*] Log.i("NetType", "================no network");
[*] break;
[*] case TYPE_CT_WAP:
[*] Log.i("NetType", "================ctwap");
[*] break;
[*] case TYPE_CT_WAP_2G:
[*] Log.i("NetType", "================ctwap_2g");
[*] break;
[*] case TYPE_CT_NET:
[*] Log.i("NetType", "================ctnet");
[*] break;
[*] case TYPE_CT_NET_2G:
[*] Log.i("NetType", "================ctnet_2g");
[*] break;
[*] case TYPE_CM_WAP:
[*] Log.i("NetType", "================cmwap");
[*] break;
[*] case TYPE_CM_WAP_2G:
[*] Log.i("NetType", "================cmwap_2g");
[*] break;
[*] case TYPE_CM_NET:
[*] Log.i("NetType", "================cmnet");
[*] break;
[*] case TYPE_CM_NET_2G:
[*] Log.i("NetType", "================cmnet_2g");
[*] break;
[*] case TYPE_CU_NET:
[*] Log.i("NetType", "================cunet");
[*] break;
[*] case TYPE_CU_NET_2G:
[*] Log.i("NetType", "================cunet_2g");
[*] break;
[*] case TYPE_CU_WAP:
[*] Log.i("NetType", "================cuwap");
[*] break;
[*] case TYPE_CU_WAP_2G:
[*] Log.i("NetType", "================cuwap_2g");
[*] break;
[*] case TYPE_OTHER:
[*] Log.i("NetType", "================other");
[*] break;
[*] default:
[*] break;
[*] }
[*] }
[*]
[*] /***
[*] * 判断Network具体类型（联通移动wap，电信wap，其他net）
[*] *
[*] * */
[*] public static int checkNetworkType(Context mContext) {
[*] try {
[*] final ConnectivityManager connectivityManager = (ConnectivityManager) mContext
[*] .getSystemService(Context.CONNECTIVITY_SERVICE);
[*] final NetworkInfo mobNetInfoActivity = connectivityManager
[*] .getActiveNetworkInfo();
[*] if (mobNetInfoActivity == null || !mobNetInfoActivity.isAvailable()) {
[*] // 注意一：
[*] // NetworkInfo 为空或者不可以用的时候正常情况应该是当前没有可用网络，
[*] // 但是有些电信机器，仍可以正常联网，
[*] // 所以当成net网络处理依然尝试连接网络。
[*] // （然后在socket中捕捉异常，进行二次判断与用户提示）。
[*] return TYPE_NET_WORK_DISABLED;
[*] } else {
[*] // NetworkInfo不为null开始判断是网络类型
[*] int netType = mobNetInfoActivity.getType();
[*] if (netType == ConnectivityManager.TYPE_WIFI) {
[*] // wifi net处理
[*] return TYPE_WIFI;
[*] } else if (netType == ConnectivityManager.TYPE_MOBILE) {
[*] // 注意二：
[*] // 判断是否电信wap:
[*] // 不要通过getExtraInfo获取接入点名称来判断类型，
[*] // 因为通过目前电信多种机型测试发现接入点名称大都为#777或者null，
[*] // 电信机器wap接入点中要比移动联通wap接入点多设置一个用户名和密码,
[*] // 所以可以通过这个进行判断！
[*]
[*] boolean is3G = isFastMobileNetwork(mContext);
[*]
[*] final Cursor c = mContext.getContentResolver().query(
[*] PREFERRED_APN_URI, null, null, null, null);
[*] if (c != null) {
[*] c.moveToFirst();
[*] final String user = c.getString(c
[*] .getColumnIndex("user"));
[*] if (!TextUtils.isEmpty(user)) {
[*] if (user.startsWith(CTWAP)) {
[*] return is3G ? TYPE_CT_WAP : TYPE_CT_WAP_2G;
[*] } else if (user.startsWith(CTNET)) {
[*] return is3G ? TYPE_CT_NET : TYPE_CT_NET_2G;
[*] }
[*] }
[*] }
[*] c.close();
[*]
[*] // 注意三：
[*] // 判断是移动联通wap:
[*] // 其实还有一种方法通过getString(c.getColumnIndex("proxy")获取代理ip
[*] // 来判断接入点，10.0.0.172就是移动联通wap，10.0.0.200就是电信wap，但在
[*] // 实际开发中并不是所有机器都能获取到接入点代理信息，例如魅族M9 （2.2）等...
[*] // 所以采用getExtraInfo获取接入点名字进行判断
[*]
[*] String netMode = mobNetInfoActivity.getExtraInfo();
[*] Log.i("", "==================netmode:" + netMode);
[*] if (netMode != null) {
[*] // 通过apn名称判断是否是联通和移动wap
[*] netMode = netMode.toLowerCase();
[*]
[*] if (netMode.equals(CMWAP)) {
[*] return is3G ? TYPE_CM_WAP : TYPE_CM_WAP_2G;
[*] } else if (netMode.equals(CMNET)) {
[*] return is3G ? TYPE_CM_NET : TYPE_CM_NET_2G;
[*] } else if (netMode.equals(NET_3G)
[*] || netMode.equals(UNINET)) {
[*] return is3G ? TYPE_CU_NET : TYPE_CU_NET_2G;
[*] } else if (netMode.equals(WAP_3G)
[*] || netMode.equals(UNIWAP)) {
[*] return is3G ? TYPE_CU_WAP : TYPE_CU_WAP_2G;
[*] }
[*] }
[*] }
[*] }
[*]
[*] } catch (Exception ex) {
[*] ex.printStackTrace();
[*] return TYPE_OTHER;
[*] }
[*]
[*] return TYPE_OTHER;
[*]
[*] }
[*]
[*] 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;
[*]
[*] }
[*] }
[*]
[*]}
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