android获取Mac地址和IP地址

获取Mac地址实际项目中测试了如下几种方法:
(1)设备开通Wifi连接，获取到网卡的MAC地址(但是不开通wifi，这种方法获取不到Mac地址，这种方法也是网络上使用的最多的方法)

//根据Wifi信息获取本地Mac
     public static String getLocalMacAddressFromWifiInfo(Context context){
         WifiManager wifi = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);  
         WifiInfo info = wifi.getConnectionInfo();  
         return info.getMacAddress(); 
     }

(2)调用Linux的busybox，通过linux命令来获取

//根据busybox获取本地Mac
     public static String getLocalMacAddressFromBusybox(){   
         String result = "";     
         String Mac = "";
         result = callCmd("busybox ifconfig","HWaddr");
          
         //如果返回的result == null，则说明网络不可取
         if(result==null){
             return "网络出错，请检查网络";
         }
          
         //对该行数据进行解析
         //例如：eth0      Link encap:Ethernet  HWaddr 00:16:E8:3E:DF:67
         if(result.length()>0 && result.contains("HWaddr")==true){
             Mac = result.substring(result.indexOf("HWaddr")+6, result.length()-1);
             Log.i("test","Mac:"+Mac+" Mac.length: "+Mac.length());
              
             /*if(Mac.length()>1){
                 Mac = Mac.replaceAll(" ", "");
                 result = "";
                 String[] tmp = Mac.split(":");
                 for(int i = 0;i<tmp.length;++i){
                     result +=tmp[i];
                 }
             }*/
             result = Mac;
             Log.i("test",result+" result.length: "+result.length());            
         }
         return result;
     }   
     
     private static String callCmd(String cmd,String filter) {   
         String result = "";   
         String line = "";   
         try {
             Process proc = Runtime.getRuntime().exec(cmd);
             InputStreamReader is = new InputStreamReader(proc.getInputStream());   
             BufferedReader br = new BufferedReader (is);   
              
             //执行命令cmd，只取结果中含有filter的这一行
             while ((line = br.readLine ()) != null && line.contains(filter)== false) {   
                 //result += line;
                 Log.i("test","line: "+line);
             }
              
             result = line;
             Log.i("test","result: "+result);
         }   
         catch(Exception e) {   
             e.printStackTrace();   
         }   
         return result;   
     }

(3)调用Android 的API： NetworkInterface. getHardwareAddress ()
该API的level为9，只有android 2.3以上才有该接口

//根据IP获取本地Mac
     public static String getLocalMacAddressFromIp(Context context) {
         String mac_s= "";
        try {
             byte[] mac;
             NetworkInterface ne=NetworkInterface.getByInetAddress(InetAddress.getByName(getLocalIpAddress()));
             mac = ne.getHardwareAddress();
             mac_s = byte2hex(mac);
        } catch (Exception e) {
            e.printStackTrace();
        }
        
         return mac_s;
     }
     
     public static  String byte2hex(byte[] b) {
          StringBuffer hs = new StringBuffer(b.length);
          String stmp = "";
          int len = b.length;
          for (int n = 0; n < len; n++) {
           stmp = Integer.toHexString(b[n] & 0xFF);
           if (stmp.length() == 1)
            hs = hs.append("0").append(stmp);
           else {
            hs = hs.append(stmp);
           }
          }
          return String.valueOf(hs);
         }

其中getLocalIpAddress是获取本地IP地址

//获取本地IP
     public static String getLocalIpAddress() {  
            try {  
                for (Enumeration<NetworkInterface> en = NetworkInterface  
                                .getNetworkInterfaces(); en.hasMoreElements();) {  
                            NetworkInterface intf = en.nextElement();  
                           for (Enumeration<InetAddress> enumIpAddr = intf  
                                    .getInetAddresses(); enumIpAddr.hasMoreElements();) {  
                                InetAddress inetAddress = enumIpAddr.nextElement();  
                                if (!inetAddress.isLoopbackAddress()) {  
                                return inetAddress.getHostAddress().toString();  
                                }  
                           }  
                        }  
                    } catch (SocketException ex) {  
                        Log.e("WifiPreference IpAddress", ex.toString());  
                    }  
            
                 return null;  
    }  

获取本地IP地址
在网络上搜索一下，一般就有如下的代码:

//获取本地IP
     public static String getLocalIpAddress() {  
            try {  
                for (Enumeration<NetworkInterface> en = NetworkInterface  
                                .getNetworkInterfaces(); en.hasMoreElements();) {  
                            NetworkInterface intf = en.nextElement();  
                           for (Enumeration<InetAddress> enumIpAddr = intf  
                                    .getInetAddresses(); enumIpAddr.hasMoreElements();) {  
                                InetAddress inetAddress = enumIpAddr.nextElement();  
                                if (!inetAddress.isLoopbackAddress()) {  
                                return inetAddress.getHostAddress().toString();  
                                }  
                           }  
                        }  
                    } catch (SocketException ex) {  
                        Log.e("WifiPreference IpAddress", ex.toString());  
                    }  
            
            
                 return null;  
    }  

但是经过测试该方法在android2.3, 2.2...较老版本有效，但是在android较新版本(例如4.0等)获取的数据不正确。
获取到了类似fe80::b607:f9ff:fee5:487e..这样的IP地址。经过一番努力，终于找出原因。
上面的IP地址是IPV6的地址形式（大概这个意思，具体没有太深入研究）。解决方法是，在上面代码中的最内层的for循环的if语句中对inetAddress进行格式判断，只有其是IPV4格式地址时，才返回值。修改后代码如下：(下面的方法也是网络上的方法，没有结果验证)

public String getLocalIpAddress() {  
        try {  
            String ipv4;  
            List  nilist = Collections.list(NetworkInterface.getNetworkInterfaces());  
            for (NetworkInterface ni: nilist)   
            {  
                List  ialist = Collections.list(ni.getInetAddresses());  
                for (InetAddress address: ialist){  
                    if (!address.isLoopbackAddress() && InetAddressUtils.isIPv4Address(ipv4=address.getHostAddress()))   
                    {   
                        return ipv4;  
                    }  
                }  
   
            }  
   
        } catch (SocketException ex) {  
            Log.e(LOG_TAG, ex.toString());  
        }  
        return null;  
    } 

网络上还有一种方法来获取本地IP地址(不过是在wifi状态下)
通过WifiManager， DhcpInfo获取IP地址以及网关等信息（在android4.0等版本也适用）

package com.jason.demo.androidip;  
  
import android.content.Context;  
import android.net.DhcpInfo;  
import android.net.wifi.WifiInfo;  
import android.net.wifi.WifiManager;  
import android.text.format.Formatter;  
  
public class IPAddress {  
      
    public String getIPAddress(Context ctx){  
        WifiManager wifi_service = (WifiManager) ctx.getSystemService(Context.WIFI_SERVICE);  
        DhcpInfo dhcpInfo = wifi_service.getDhcpInfo();  
        WifiInfo wifiinfo = wifi_service.getConnectionInfo();  
        System.out.println("Wifi info----->"+wifiinfo.getIpAddress());  
        System.out.println("DHCP info gateway----->"+Formatter.formatIpAddress(dhcpInfo.gateway));  
        System.out.println("DHCP info netmask----->"+Formatter.formatIpAddress(dhcpInfo.netmask));  
        //DhcpInfo中的ipAddress是一个int型的变量，通过Formatter将其转化为字符串IP地址  
        return Formatter.formatIpAddress(dhcpInfo.ipAddress);  
    }  
}  

加入permission
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>

不过我自己在做项目过程中，用另外一种方法也解决了android4.0获取IP错误的问题:

//获取本地IP
     public static String getLocalIpAddress() {  
            try {  
                for (Enumeration<NetworkInterface> en = NetworkInterface  
                                .getNetworkInterfaces(); en.hasMoreElements();) {  
                            NetworkInterface intf = en.nextElement();  
                           for (Enumeration<InetAddress> enumIpAddr = intf  
                                    .getInetAddresses(); enumIpAddr.hasMoreElements();) {  
                                InetAddress inetAddress = enumIpAddr.nextElement();  
                                if (!inetAddress.isLoopbackAddress() && !inetAddress.isLinkLocalAddress()) {  
                                return inetAddress.getHostAddress().toString();  
                                }  
                           }  
                        }  
                    } catch (SocketException ex) {  
                        Log.e("WifiPreference IpAddress", ex.toString());  
                    }  
            
            
                 return null;  
    } 

参考博文:

http://www.cnblogs.com/Amandaliu/archive/2011/11/06/2238177.html
Android获取Mac地址

http://blog.csdn.NET/ccf0703/article/details/7451274
解决安卓4.0获取本地IP地址问题。

http://blog.csdn.Net/garybook/article/details/7874456
通过WifiManager,DhcpInfo获取android IP地址及网关等信息(两种方式)

http://blog.csdn.net/lizzydarcymsp/article/details/5623302
利用InetAddress类确定特殊IP地址 (isLinkLocalAddress,isLoopbackAddress等)

转自：http://www.cnblogs.com/lijunamneg/archive/2013/03/04/2943146.html

然后我自己弱弱说一句， 我用前面两种方法的时候有空指针，最后采取的本地IP获取mac地址。