Android如何获取当前手机的网络状态

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

2013-05-28 11:35 8061人阅读 评论(4) 收藏 举报

Android网络状态运营商wifi3G

不多说了,直接看代码, NB人会懂的!

[java] 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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