Android获取本机IP地址（不是localhost）和MAC的方法

这个方法在摩托罗拉里程碑上测试通过。功能是获取本机的IP和MAC地址。首先新建一个工程，修改AndroidManifest.xml文件增加用户权限，如下。

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

然后修改/res/layout/main.xml，如下。

<TextView android:id ="@+id/hello" android:layout_width="fill_parent" android:layout_height="wrap_content" />

主要代码如下（GetIPMAC.java）：

package exp.getipmac; import java.net.InetAddress; import java.net.NetworkInterface; import java.net.SocketException; import java.util.Enumeration; import android.app.Activity; import android.content.Context; import android.net.wifi.WifiInfo; import android.net.wifi.WifiManager; import android.os.Bundle; import android.util.Log; import android.widget.TextView; public class GetIPMAC extends Activity { public static String hostip; //本机IP public static String hostmac; //本机MAC /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); TextView tv= (TextView)findViewById(R.id.hello); hostip = getLocalIpAddress(); //获取本机IP hostmac = getLocalMacAddress();//获取本机MAC /* 显示本机IP和MAC */ tv.setText("HostIP:" + hostip + "/nHostMAC:" + hostmac); /* 在调试信息中输出本机IP和MAC */ if (hostip != null) Log.d("GetIPMAC", hostip); else Log.d("GetIPMAC", "null"); Log.d("GetIPMAC", hostmac); } public 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; } public String getLocalMacAddress() { WifiManager wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE); WifiInfo info = wifi.getConnectionInfo(); return info.getMacAddress(); } }

运行效果：