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)
(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.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 en = NetworkInterface
.getNetworkInterfaces(); en.hasMoreElements();) {
NetworkInterface intf = en.nextElement();
for (Enumeration 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 en = NetworkInterface
.getNetworkInterfaces(); en.hasMoreElements();) {
NetworkInterface intf = en.nextElement();
for (Enumeration 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
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 en = NetworkInterface
.getNetworkInterfaces(); en.hasMoreElements();) {
NetworkInterface intf = en.nextElement();
for (Enumeration 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;
}