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

yanfangsheng123 · 发表于 2015-10-2 07:09:18

　　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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