Android Open Source - base-android-utils Addresses

• Back to Network/download  ↑

From Project

Back to project page base-android-utils.

License

The source code is released under:

Apache License

Java Source Code

package me.pc.mobile.helper.v14.net;
//  www .j  ava2s.  com
import android.annotation.TargetApi;
import android.content.Context;
import android.net.wifi.WifiInfo;
import android.net.wifi.WifiManager;
import android.os.Build;

import org.apache.http.conn.util.InetAddressUtils;

import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.Collections;
import java.util.List;

/**
 * Needed manifest permissions :
 * <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
 *
 * Test functions :
 * Addresses.getMACAddress("wlan0"); Addresses.getMACAddress("eth0");
 * Addresses.getIPAddress(true); // IPv4 Addresses.getIPAddress(false); // IPv6
 *
 * @see <a href= "http://stackoverflow.com/questions/6064510>How to get
 *      ip-address of the device</a >
 */
public final class Addresses {

  private Addresses() {}

  /**
   * Returns the SSID of the network connected to or null if not connected to
   * a wifi network. If the SSID is empty or consists of whitespace only also
   * null is returned - possible ?
   *
   * @param ctx
   *            a Context needed to access the System services
   * @return the SSID of the network connected to or null
   */
  public static String getCurrentSsid(Context ctx) {
    String ssid = null;
    if (NetworkUtil.isWifiConnected(ctx)) {
      WifiManager wm = (WifiManager) ctx
        .getSystemService(Context.WIFI_SERVICE);
      final WifiInfo connectionInfo = wm.getConnectionInfo();
      if (connectionInfo != null) {
        ssid = connectionInfo.getSSID();
        if (ssid != null && "".equals(ssid.trim())) ssid = null;
      }
    }
    return ssid;
  }

  /**
   * Get IP address from first non-localhost interface
   *
   * @param useIPv4
   *            true=return ipv4, false=return ipv6
   * @return address or empty string
   * @throws SocketException
   */
  public static String getIPAddress(boolean useIPv4) throws SocketException {
    List<NetworkInterface> interfaces = Collections.list(NetworkInterface
      .getNetworkInterfaces());
    for (NetworkInterface intf : interfaces) {
      List<InetAddress> addrs = Collections.list(intf.getInetAddresses());
      for (InetAddress addr : addrs) {
        if (!addr.isLoopbackAddress()) {
          String sAddr = addr.getHostAddress();
          boolean isIPv4 = InetAddressUtils.isIPv4Address(sAddr);
          if (useIPv4) {
            if (isIPv4) return sAddr;
          } else {
            if (!isIPv4) {
              // drop ip6 port suffix
              int delim = sAddr.indexOf('%');
              return delim < 0 ? sAddr : sAddr
                .substring(0, delim);
            }
          }
        }
      }
    }
    return "";
  }

  /**
   * Returns MAC address of the given interface name. Use only in GINGERBREAD
   * and above builds
   *
   * @param interfaceName
   *            eth0, wlan0 or NULL=use first interface
   * @return mac address or empty string
   * @throws SocketException
   */
  @TargetApi(Build.VERSION_CODES.GINGERBREAD)
  public static String getMACAddress(String interfaceName)
      throws SocketException {
    if (android.os.Build.VERSION.SDK_INT < Build.VERSION_CODES.GINGERBREAD) {
      throw new RuntimeException("You can use getMACAddress() only "
        + "after API " + Build.VERSION_CODES.GINGERBREAD);
    }
    List<NetworkInterface> interfaces = Collections.list(NetworkInterface
      .getNetworkInterfaces());
    for (NetworkInterface intf : interfaces) {
      if (interfaceName != null) {
        if (!intf.getName().equalsIgnoreCase(interfaceName)) continue;
      }
      byte[] mac = intf.getHardwareAddress();
      if (mac == null) return "";
      StringBuilder buf = new StringBuilder();
      for (int idx = 0; idx < mac.length; idx++)
        buf.append(String.format("%02X:", mac[idx]));
      if (buf.length() > 0) buf.deleteCharAt(buf.length() - 1);
      return buf.toString();
    }
    return "";
  }
}

Java Source Code List

• Back to Network/download  ↑