android获取ip的方法

需要一些uses-permission





package com.miles.demo.getipinfo;

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

import android.app.Activity;
import android.net.wifi.WifiInfo;
import android.net.wifi.WifiManager;
import android.os.Bundle;
import android.text.format.Formatter;
import android.widget.TextView;

public class GetIPinfoActivity extends Activity {

    private TextView mText;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        mText = (TextView) findViewById(R.id.text);
        String ip;

        //Method 1
        WifiManager wifiManager = (WifiManager) getSystemService(WIFI_SERVICE);
        WifiInfo info = wifiManager.getConnectionInfo();
        ip = "wifiInfo :" + Formatter.formatIpAddress(info.getIpAddress());
        ip += "\n";

        //Method 2
        try{
            Socket socket = new Socket("10.40.73.41", 80);
            ip += "socket : " + socket.getLocalAddress().toString() + "\n";
        } catch (Exception e) {
            e.printStackTrace();
            //throw new RuntimeException();
        }

        //Method 3
        try {
            Enumeration<NetworkInterface> interfaces =  NetworkInterface.getNetworkInterfaces();
            NetworkInterface inf = interfaces.nextElement();
            for (Enumeration<InetAddress> enumAddress = inf.getInetAddresses();enumAddress.hasMoreElements();) {
                InetAddress in = enumAddress.nextElement();
                if(!in.isLinkLocalAddress()) {
                    ip += "NetworkInterface : " + in.getHostAddress() + "\n";
                }
            }
        }catch (Exception e) {
            e.printStackTrace();
            //throw new RuntimeException();
        }

        mText.setText("" + ip);
    }
}