android - Upload multiple photos to SFTP in Async -


i want upload multiple photos sftp server following code 1 photo uploaded. please has idea m getting wrong or have better approach this

private class uploadfileonftpserverasync extends asynctask<void, void, void> {     progressdialog pddialog;      @override     protected void onpreexecute() {         try {             pddialog = new progressdialog(mediafileattachmentactivity.this);             pddialog.setmessage("loading please wait..");             pddialog.show();             pddialog.setcancelable(false);         } catch (exception e) {             e.printstacktrace();         }     }      @override     protected void doinbackground(void... params) {         if (mediadatalist.size() > 0) {             (int = 0; < mediadatalist.size(); i++) {                 if (mediadatalist.get(i).getmediaftppath()                         .equalsignorecase("")) {                                         uploadfileonsftp(mediadatalist.get(i)                                 .getmfile(), mediadatalist.get(i)                                 .getmedianame(), "images");                 }             }         }         return null;     }      @override     protected void onpostexecute(void result) {         super.onpostexecute(result);         pddialog.dismiss();         mediafileattachmentactivity.this.finish();         toast.maketext(mediafileattachmentactivity.this,                 "attachments saved successfully", toast.length_short)                 .show();     }  }    private void uploadfileonsftp(final file file2, string app_filename,         string type){     try{          new thread(new runnable() {              @override             public void run() {                 connecttosftp(file2);              }         }).start();      } catch (exception e) {         e.printstacktrace();     }     }    private void connecttosftp(file file2)   {      try {          jsch jsch = new jsch();          session = jsch.getsession(user_name,server_address,port_no);          session.setpassword(appsingleton.getinstance().getpassword());          java.util.properties config = new java.util.properties();          config.put("stricthostkeychecking", "no");          session.setconfig(config);          session.connect();          channel = session.openchannel("sftp");          channel.connect();         channelsftp = (channelsftp)channel;         channelsftp.cd(appsingleton.getinstance().getpath());         //  file f = new file(file2);         channelsftp.put(new fileinputstream(file2), file2.getname());          session.disconnect();          channel.disconnect();     } catch (filenotfoundexception e) {         e.printstacktrace();     } catch (jschexception e) {         e.printstacktrace();     } catch (sftpexception e) {         e.printstacktrace();     }  }

i have solved issue creating thread instead of asynctask

private void executethread() {

    final progressdialog pddialog;     pddialog = new progressdialog(mediafileattachmentactivity.this);                     pddialog.setmessage("loading please wait..");                     pddialog.show();                     pddialog.setcancelable(false);      new thread(new runnable() {          @override         public void run() {             if (mediadatalist.size() > 0) {                 (int = 0; < mediadatalist.size(); i++) {                     if (mediadatalist.get(i).getmediaftppath()                             .equalsignorecase("")) {                              uploadfileonsftp(mediadatalist.get(i)                                     .getmfile(), mediadatalist.get(i)                                     .getmedianame(), "images");                      }                 }             }              handler.post(new runnable() {                  @override                 public void run() {                     pddialog.dismiss();                     mediafileattachmentactivity.this.finish();                     toast.maketext(mediafileattachmentactivity.this,                             "attachments saved successfully", toast.length_short)                             .show();                  }             });         }     }).start();  }

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