获得手机本地IP地址

package mobile.ip.address;

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

import mobile.ip.address.R;

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

public class Main extends Activity
{
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}

public void onClick_Client_IP(View view)
{

try
{
TextView tvIPs = (TextView)findViewById(R.id.tvIPs);
Enumeration<NetworkInterface> netInterfaces = NetworkInterface.getNetworkInterfaces();
while (netInterfaces.hasMoreElements())
{
NetworkInterface ni = netInterfaces.nextElement();

Enumeration<InetAddress> ips = ni.getInetAddresses();
while (ips.hasMoreElements())
{
tvIPs.append(ips.nextElement().getHostAddress() + "\n\n");
}
}
}
catch (Exception e)
{
// TODO: handle exception
}
}
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent">
<Button android:layout_width="fill_parent"
android:layout_height="wrap_content" android:text="获得客户端IP地址"
android:onClick="onClick_Client_IP" />
<TextView android:id="@+id/tvIPs" android:layout_width="fill_parent"
android:layout_height="wrap_content" />
</LinearLayout>