multithreading - How can I run code on a background thread on Android? -

i want code run in background continuously. don't want in service. there other way possible?

i have tried calling thread class in activity activity remains in background sometime , stops. thread class stops working.

class testthread implements runnable      {         @override         public void run()          {             file file = new file(environment.getexternalstoragedirectory(),"/bpcltracker/gpsdata.txt");             int i=0;          randomaccessfile in = null;          try         {             in = new randomaccessfile(file, "rw");           }          catch (filenotfoundexception e)          {             // todo auto-generated catch block             e.printstacktrace();         } catch (ioexception e) {             // todo auto-generated catch block             e.printstacktrace();         }         //string line =null;         while (true)          {             httpentity entity=null;             try              {                 if (isinterneton())                  {                         while ((line = in.readline()) != null)                         {                              httpclient client = new defaulthttpclient();                             string url = "some url";                             httppost request = new httppost(url);                             stringentity se = new stringentity(line);                             se.setcontentencoding("utf-8");                             se.setcontentencoding(new basicheader(http.content_type, "application/json"));                             entity = se;                             request.setentity(entity);                             httpresponse response = client.execute(request);                             entity = response.getentity();                             i++;                         }                         if((line = in.readline()) == null && entity!=null)                         {                             file.delete();                             testthread t = new testthread();                             thread t1 = new thread(t);                             t1.start();                         }                   }// end of if                 else                 {                     thread.sleep(60000);                  } // end of else             }// end of try             catch (nullpointerexception e1)             {                 e1.printstacktrace();             }              catch (interruptedexception e2)              {                 e2.printstacktrace();             }             catch (ioexception e1)              {                 // todo auto-generated catch block                 e1.printstacktrace();             }         }// end of while     }// end of run 

if need to:

1. execute code on background thread

2. execute code not touch/update ui

3. execute (short) code take @ few seconds complete

then use following clean , efficient pattern uses asynctask:

asynctask.execute(new runnable() {    @override    public void run() {       //todo background code    } });