java - SMTP mail code is working fine in Android ICS but not in Gingerbread? -

i have written code send mail through smtp, mail sent android ics devices, gingerbread device mail not sent. can go through code , me...

firstly m calling sendmail() method of gmailoauthsender class.

class gmailoauthsender {      private session session;      public smtptransport connecttosmtp(string host, int port,             string useremail, string oauthtoken, boolean debug)             throws exception {          properties props = new properties();         props.put("mail.smtp.starttls.enable", "true");         props.put("mail.smtp.starttls.required", "true");         props.put("mail.smtp.sasl.enable", "false");         session = session.getinstance(props);         session.setdebug(debug);          final urlname unusedurlname = null;         smtptransport transport = new smtptransport(session, unusedurlname);         // if password non-null, smtp tries auth login.         final string emptypassword = null;         transport.connect(host, port, useremail, emptypassword);          byte[] response = string.format("user=%s\1auth=bearer %s\1\1",                 useremail, oauthtoken).getbytes();         response = base64encoderstream.encode(response);          transport.issuecommand("auth xoauth2 " + new string(response), 235);          return transport;     }      public synchronized void sendmail(string subject, string body,             string user, string oauthtoken, string recipients, string cc) {         try {             spinner = progressdialog.show(feedbackactivity.this, "",                     getresources().getstring(r.string.sending_mail), false, true);             new sendmailtask().execute(subject, body, user, oauthtoken,                     recipients, cc);          } catch (exception e) {             log.d("exception inside send mail method", e.tostring());         }      }      class sendmailtask extends asynctask<object, object, object> {          @override         protected object doinbackground(object... params) {             string subject = (string) params[0];             string body = (string) params[1];             string user = (string) params[2];             string oauthtoken = (string) params[3];             string recipients = (string) params[4];             string cc = (string) params[5];             try {                 smtptransport smtptransport = connecttosmtp(                         "smtp.gmail.com", 587, user, oauthtoken, false);                 for(int = 0; i< attachedfiles.size(); i++){                     file file = new file(attachedfiles.get(i).getfilepath());                     addattachment(multipart, file);                 }                 mimemessage message = new mimemessage(session);                 message.setsender(new internetaddress(user));                 message.setsubject(subject);                  mimebodypart mbp1 = new mimebodypart();                 mbp1.settext(body + "\nthanks\n"+user+"\n\n"+getresources().getstring(r.string.signature_text));                 multipart.addbodypart(mbp1);                   message.setcontent(multipart);                 if (recipients.indexof(',') > 0){                     message.setrecipients(message.recipienttype.to,                             internetaddress.parse(recipients));                 }else{                     message.setrecipient(message.recipienttype.to,                             new internetaddress(recipients));                 }                 if(cc != null && cc.length() >0){                     if (cc.indexof(',') > 0){                         message.addrecipients(message.recipienttype.cc,                                 internetaddress.parse(cc));                     }else{                         message.addrecipient(message.recipienttype.cc,                                 new internetaddress(cc));                     }                     }                 smtptransport.sendmessage(message,                         message.getallrecipients());                 spinner.dismiss();                 finish();                 return new object[] { smtptransport, message };             } catch (exception e) {                 spinner.dismiss();                 finish();              }             return null;         }          @override         protected void onpostexecute(object result) {             super.onpostexecute(result);              if(result != null){             toast.maketext(feedbackactivity.this, getresources().getstring(r.string.mail_sent), toast.length_long).show();             }else{                 toast.maketext(feedbackactivity.this, getresources().getstring(r.string.mail_not_sent), toast.length_long).show();               }         }     } }