Non-blocking web-Request

This code fetches content from the web without blocking the UI (runs in the background in a thread). Once finished, it posts a handler that is picked up by the UI as soon as possible.

 

1. Import java. Io. bufferedinputstream;
2. Import java. Io. inputstream;
3. Import java.net. url;
4. Import java.net. urlconnection;
5. Import org. Apache. http. util. bytearraybuffer;
7. Public class iconic extends activity {
8. Private string html = "";
9. Private handler mhandler;
11. Public void oncreate (bundle savedinstancestate ){
12. Super. oncreate (savedinstancestate );
13. Setcontentview (R. layout. Main );
14. Mhandler = new handler ();
15. Checkupdate. Start ();
16. }
18. Private thread checkupdate = new thread (){
19. Public void run (){
20. Try {
21. URL updateurl = new URL ("http://iconic.4feets.com/update ");
22. Urlconnection conn = updateurl. openconnection ();
23. Inputstream is = conn. getinputstream ();
24. Bufferedinputstream Bis = new bufferedinputstream (is );
25. Bytearraybuffer BAF = new bytearraybuffer (50 );
27. Int current = 0;
28. While (current = bis. Read ())! =-1 ){
29. BAF. append (byte) Current );
30. }
32. /* Convert the bytes read to a string .*/
33. Html = new string (BAF. tobytearray ());
34. Mhandler. Post (showupdate );
35. } Catch (exception e ){
36. }
37. }
38. };
40. Private runnable showupdate = new runnable (){
41. Public void run (){
42. Toast. maketext (iconic. This, "HTML code:" + HTML, Toast. length_short). Show ();
43. }
44. };
45. }

Original article: http://www.androidsnippets.org/snippets/1/