Android Get IP Address

Original: http://www.cnblogs.com/android100/p/Android-get-ip.html

1. Use WiFi

Set user Permissions First

2. <uses-permission android:name="Android.permission.ACCESS_WIFI_STATE"></ Uses-permission>
4. <uses-permission android:name="Android.permission.CHANGE_WIFI_STATE"></ Uses-permission>
6. <uses-permission android:name="Android.permission.WAKE_LOCK"></uses-permission >

Second, the code is as follows

2. Public void OnCreate (Bundle savedinstancestate) {
4. super.oncreate (savedinstancestate);
6. Setcontentview (R.layout.main);
10. //Get WiFi service
12. Wifimanager Wifimanager = (wifimanager) getsystemservice (Context.wifi_service);
14. //Determine if WiFi is turned on
16. if (!wifimanager.iswifienabled ()) {
18. Wifimanager.setwifienabled (true);
20. }
22. Wifiinfo wifiinfo = Wifimanager.getconnectioninfo ();
24. int ipAddress = wifiinfo.getipaddress ();
26. String IP = Inttoip (ipAddress);
28. EditText et = (EditText) Findviewbyid (r.id.edittext01);
30. Et.settext (IP);
32. }
34. private String Inttoip (int i) {
38. return (I & 0xFF) + "." +
40. ((I >> 8) & 0xFF) + "." +
42. ((I >> ) & 0xFF) + "." +
44. (I >> & 0xFF);
46. }

2. Using GPRS

First, set the user's Internet access rights

1. <uses-permission android:name="Android.permission.INTERNET"></uses-permission >

Second, the code is as follows

2. Public String getlocalipaddress ()
4. {
6. Try
8. {
10. For (enumeration<networkinterface> en = networkinterface.getnetworkinterfaces (); en.hasmoreelements ();)
12. {
14. NetworkInterface intf = En.nextelement ();
16. For (enumeration<inetaddress> enumipaddr = intf.getinetaddresses (); enumipaddr.hasmoreelements ();)
18. {
20. InetAddress inetaddress = Enumipaddr.nextelement ();
22. if (!inetaddress.isloopbackaddress ())
24. {
26. return Inetaddress.gethostaddress (). toString ();
28. }
30. }
32. }
34. }
36. catch (SocketException ex)
38. {
40. LOG.E ("Wifipreference IpAddress", ex.tostring ());
42. }
44. return null;
46. }

Android Get IP Address