android获取ip的方法

luotootu

1. 需要一些uses-permission
3. <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"></uses-permission>
4.     <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"></uses-permission>
5.     <uses-permission android:name="android.permission.INTERNET"></uses-permission>
6. 
   
7. package com.miles.demo.getipinfo;
   
8. 
   
9. import java.net.InetAddress;
   
10. import java.net.NetworkInterface;
    
11. import java.net.Socket;
    
12. import java.util.Enumeration;
    
13. 
    
14. import android.app.Activity;
    
15. import android.net.wifi.WifiInfo;
    
16. import android.net.wifi.WifiManager;
    
17. import android.os.Bundle;
    
18. import android.text.format.Formatter;
    
19. import android.widget.TextView;
    
20. 
    
21. public class GetIPinfoActivity extends Activity {
    
22.     
    
23.     private TextView mText;
    
24.     
    
25.     @Override
    
26.     public void onCreate(Bundle savedInstanceState) {
    
27.         super.onCreate(savedInstanceState);
    
28.         setContentView(R.layout.main);
    
29.         mText = (TextView) findViewById(R.id.text);
    
30.         String ip;
    
31.         
    
32.         //Method 1
    
33.         WifiManager wifiManager = (WifiManager) getSystemService(WIFI_SERVICE);
    
34.         WifiInfo info = wifiManager.getConnectionInfo();
    
35.         ip = "wifiInfo :" + Formatter.formatIpAddress(info.getIpAddress());
    
36.         ip += "\n";
    
37.         
    
38.         //Method 2
    
39.         try{
    
40.             Socket socket = new Socket("10.40.73.41", 80);
    
41.             ip += "socket : " + socket.getLocalAddress().toString() + "\n";
    
42.         } catch (Exception e) {
    
43.             e.printStackTrace();
    
44.             //throw new RuntimeException();
    
45.         }
    
46.         
    
47.         //Method 3
    
48.         try {
    
49.             Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetworkInterfaces();
    
50.             NetworkInterface inf = interfaces.nextElement();
    
51.             for (Enumeration<InetAddress> enumAddress = inf.getInetAddresses();enumAddress.hasMoreElements();) {
    
52.                 InetAddress in = enumAddress.nextElement();
    
53.                 if(!in.isLinkLocalAddress()) {
    
54.                     ip += "NetworkInterface : " + in.getHostAddress() + "\n";
    
55.                 }
    
56.             }
    
57.         }catch (Exception e) {
    
58.             e.printStackTrace();
    
59.             //throw new RuntimeException();
    
60.         }
    
61.         
    
62.         mText.setText("" + ip);
    
63.     }
    
64. }