MyIPAdressActivity.java

package com.gogler.MyIPAdress;

import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.Enumeration;

import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;

public class MyIPAdressActivity extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        String MyIPAdress=GetHostIp();
        TextView tv=new TextView(this);
        tv.setText("MyIPAdress:"+MyIPAdress);
        setContentView(tv);       
       
    }
   
   public  String GetHostIp() {   
         try { 
             for (Enumeration<NetworkInterface> en = NetworkInterface 
                     .getNetworkInterfaces(); en.hasMoreElements();) { 
                 NetworkInterface intf = en.nextElement(); 
                 for (Enumeration<InetAddress> ipAddr = intf.getInetAddresses(); ipAddr 
                         .hasMoreElements();) { 
                     InetAddress inetAddress = ipAddr.nextElement(); 
                     if (!inetAddress.isLoopbackAddress()) {                      
                         return inetAddress.getHostAddress(); 
                      } 
                  } 
              } 
         } catch (SocketException ex) { 
          } catch (Exception e) { 
          } 
          return null; 
      } 

}

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.gogler.MyIPAdress"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk android:minSdkVersion="4" />
    <!-- 必须授权-INTERNET -->
   <uses-permission android:name="android.permission.INTERNET"/>
    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name" >
        <activity
            android:label="@string/app_name"
            android:name=".MyIPAdressActivity" >
            <intent-filter >
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>