android - onPostExecute() method not being executed -


i have 2 web service methods being called in asynctask. first 1 being called second web service method not called. idea how call second method after first?

asynctask code

public class transaction extends asynctask<string,void,string>     {         private string finalbalance1 = "", price1 = "", pname = "", pnric = "", pclass = "", sno = "";         public transaction(string price1, string pname, string pnric, string pclass, string sno, string finalbalance1)         {             super();             this.finalbalance1 = double.tostring(finalbalance);             this.price1 = double.tostring(sprice);             this.pname = sra.studentname;             this.pnric = sra.studentnric;             this.pclass = sra.studentclass;             this.sno = logger.stallno;         }         @override           protected string doinbackground (string...url)           {              string result = "";              httpclient httpclient = new defaulthttpclient();             httppost httppost = new httppost("http://152.226.152.175/nco/webservice.asmx/insertstudenttransaction");             try             {                 list<namevaluepair> namevaluepairs = new arraylist<namevaluepair>(5);                 namevaluepairs.add(new basicnamevaluepair("nric", pnric));                 namevaluepairs.add(new basicnamevaluepair("name", pname));                 namevaluepairs.add(new basicnamevaluepair("class", pclass));                 namevaluepairs.add(new basicnamevaluepair("stallno", sno));                 namevaluepairs.add(new basicnamevaluepair("amountspent", price1));                 httppost.setentity(new urlencodedformentity(namevaluepairs));                  httpresponse response = httpclient.execute(httppost);                 httpentity entity = response.getentity();                 inputstream in = entity.getcontent();                 bufferedreader reader = new bufferedreader(new inputstreamreader(in, "utf-8"), 8);                 stringbuilder sb = new stringbuilder();                 string line = null;                 while ((line = reader.readline()) != null)                 {                     result = line;                 }               } catch (clientprotocolexception e) {                  e.printstacktrace();                 } catch (ioexception e) {                  e.printstacktrace();                 }                 return result;               }          protected void onpostexecute (string result)           {             if(result != null)             {             httpclient httpclient = new defaulthttpclient();             httppost httppost = new httppost("http://152.226.152.175/nco/webservice.asmx/updateparticulars");             try             {                 list<namevaluepair> namevaluepairs = new arraylist<namevaluepair>(4);                 namevaluepairs.add(new basicnamevaluepair("nric", pnric));                 namevaluepairs.add(new basicnamevaluepair("fixedamount", finalbalance1));                 namevaluepairs.add(new basicnamevaluepair("name", pname));                 namevaluepairs.add(new basicnamevaluepair("class", pclass));                 httppost.setentity(new urlencodedformentity(namevaluepairs));                 httpresponse response = httpclient.execute(httppost);                 httpentity entity = response.getentity();                 inputstream in = entity.getcontent();                 bufferedreader reader = new bufferedreader(new inputstreamreader(in, "utf-8"), 8);                 stringbuilder sb = new stringbuilder();                 string line = null;                 while ((line = reader.readline()) != null)                 {                     system.out.println(line);                 }                } catch (clientprotocolexception e) {                  e.printstacktrace();              }catch (ioexception e) {                  e.printstacktrace();              }             }           }     } } 

 @override missing before onpostexecute(string result), , check result getting null

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