Android网络工具类NetworkUtils详解

网络工具类NetworkUtils，供大家参考，具体内容如下

提供的方法：

打开网络设置界面 openWirelessSettings
判断网络是否可用 isAvailable
判断网络是否连接 isConnected
判断网络是否是4G is4G
判断wifi是否连接状态 isWifiConnected
获取移动网络运营商名称 getNetworkOperatorName
获取移动终端类型 getPhoneType
获取当前的网络类型(WIFI,2G,3G,4G) getNetWorkType、getNetWorkTypeName

代码：

import android.content.Context;
import android.content.Intent;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.telephony.TelephonyManager;


public class NetworkUtils {

  public static final int NETWORK_NO = -1;  // no network
  public static final int NETWORK_WIFI = 1;  // wifi network
  public static final int NETWORK_2G = 2;  // "2G" networks
  public static final int NETWORK_3G = 3;  // "3G" networks
  public static final int NETWORK_4G = 4;  // "4G" networks
  public static final int NETWORK_UNKNOWN = 5;  // unknown network

  private static final int NETWORK_TYPE_GSM = 16;
  private static final int NETWORK_TYPE_TD_SCDMA = 17;
  private static final int NETWORK_TYPE_IWLAN = 18;

  
  public static void openWirelessSettings(Context context) {
    if (android.os.Build.VERSION.SDK_INT > 10) {
      context.startActivity(new Intent(android.provider.Settings.ACTION_SETTINGS));
    } else {
      context.startActivity(new Intent(android.provider.Settings.ACTION_WIRELESS_SETTINGS));
    }
  }

  
  private static NetworkInfo getActiveNetworkInfo(Context context) {
    ConnectivityManager cm = (ConnectivityManager) context
 .getSystemService(Context.CONNECTIVITY_SERVICE);
    return cm.getActiveNetworkInfo();
  }

  
  public static boolean isAvailable(Context context) {
    NetworkInfo info = getActiveNetworkInfo(context);
    return info != null && info.isAvailable();
  }

  
  public static boolean isConnected(Context context) {
    NetworkInfo info = getActiveNetworkInfo(context);
    return info != null && info.isConnected();
  }

  
  public static boolean is4G(Context context) {
    NetworkInfo info = getActiveNetworkInfo(context);
    return info != null && info.isAvailable() && info.getSubtype() == TelephonyManager.NETWORK_TYPE_LTE;
  }

  
  public static boolean isWifiConnected(Context context) {
    ConnectivityManager cm = (ConnectivityManager) context
 .getSystemService(Context.CONNECTIVITY_SERVICE);
    return cm != null && cm.getActiveNetworkInfo() != null
 && cm.getActiveNetworkInfo().getType() == ConnectivityManager.TYPE_WIFI;
  }

  
  public static String getNetworkOperatorName(Context context) {
    TelephonyManager tm = (TelephonyManager) context
 .getSystemService(Context.TELEPHONY_SERVICE);
    return tm != null ? tm.getNetworkOperatorName() : null;
  }

  
  public static int getPhoneType(Context context) {
    TelephonyManager tm = (TelephonyManager) context
 .getSystemService(Context.TELEPHONY_SERVICE);
    return tm != null ? tm.getPhoneType() : -1;
  }

  
  public static int getNetWorkType(Context context) {
    int netType = NETWORK_NO;
    NetworkInfo info = getActiveNetworkInfo(context);
    if (info != null && info.isAvailable()) {

      if (info.getType() == ConnectivityManager.TYPE_WIFI) {
 netType = NETWORK_WIFI;
      } else if (info.getType() == ConnectivityManager.TYPE_MOBILE) {
 switch (info.getSubtype()) {

   case NETWORK_TYPE_GSM:
   case TelephonyManager.NETWORK_TYPE_GPRS:
   case TelephonyManager.NETWORK_TYPE_CDMA:
   case TelephonyManager.NETWORK_TYPE_EDGE:
   case TelephonyManager.NETWORK_TYPE_1xRTT:
   case TelephonyManager.NETWORK_TYPE_IDEN:
     netType = NETWORK_2G;
     break;

   case NETWORK_TYPE_TD_SCDMA:
   case TelephonyManager.NETWORK_TYPE_EVDO_A:
   case TelephonyManager.NETWORK_TYPE_UMTS:
   case TelephonyManager.NETWORK_TYPE_EVDO_0:
   case TelephonyManager.NETWORK_TYPE_HSDPA:
   case TelephonyManager.NETWORK_TYPE_HSUPA:
   case TelephonyManager.NETWORK_TYPE_HSPA:
   case TelephonyManager.NETWORK_TYPE_EVDO_B:
   case TelephonyManager.NETWORK_TYPE_EHRPD:
   case TelephonyManager.NETWORK_TYPE_HSPAP:
     netType = NETWORK_3G;
     break;

   case NETWORK_TYPE_IWLAN:
   case TelephonyManager.NETWORK_TYPE_LTE:
     netType = NETWORK_4G;
     break;
   default:

     String subtypeName = info.getSubtypeName();
     if (subtypeName.equalsIgnoreCase("TD-SCDMA")
  || subtypeName.equalsIgnoreCase("WCDMA")
  || subtypeName.equalsIgnoreCase("CDMA2000")) {
netType = NETWORK_3G;
     } else {
netType = NETWORK_UNKNOWN;
     }
     break;
 }
      } else {
 netType = NETWORK_UNKNOWN;
      }
    }
    return netType;
  }

  
  public static String getNetWorkTypeName(Context context) {
    switch (getNetWorkType(context)) {
      case NETWORK_WIFI:
 return "NETWORK_WIFI";
      case NETWORK_4G:
 return "NETWORK_4G";
      case NETWORK_3G:
 return "NETWORK_3G";
      case NETWORK_2G:
 return "NETWORK_2G";
      case NETWORK_NO:
 return "NETWORK_NO";
      default:
 return "NETWORK_UNKNOWN";
    }
  }
}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持考高分网。