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MainActivity如下:

package cn.testip;import java.net.InetAddress;import java.net.NetworkInterface;import java.net.SocketException;import java.util.Enumeration;import android.os.Bundle;import android.app.Activity;/** * Demo描述: * 获取移动设备的IP地址 */public class MainActivity extends Activity {	@Override	protected void onCreate(Bundle savedInstanceState) {		super.onCreate(savedInstanceState);		setContentView(R.layout.main);		String IP=getIP();		System.out.println("The IP of this handset is : "+IP);	}		private String getIP() {		String IP = null;		StringBuilder IPStringBuilder = new StringBuilder();		try {			Enumeration
   
     networkInterfaceEnumeration = NetworkInterface.getNetworkInterfaces();			while (networkInterfaceEnumeration.hasMoreElements()) {				NetworkInterface networkInterface = networkInterfaceEnumeration.nextElement();				Enumeration
    
      inetAddressEnumeration = networkInterface.getInetAddresses();				while (inetAddressEnumeration.hasMoreElements()) {					InetAddress inetAddress = inetAddressEnumeration.nextElement();					if (!inetAddress.isLoopbackAddress()&& 						!inetAddress.isLinkLocalAddress()&& 						 inetAddress.isSiteLocalAddress()) {						 IPStringBuilder.append(inetAddress.getHostAddress().toString()+"\n");					}				}			}		} catch (SocketException ex) {		}		IP = IPStringBuilder.toString();		return IP;	}}
    
   

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