apache - Android FTPClient ftpClient = new FTPClient(); causes crash only in release version -


i using apache commons-net-3.3 jar , have researched previous threads make sure configured correctly in build path.

my android app works fine in debug mode on several tablets when release code using ant , publish it, code falls on @ :-

ftpclient ftpclient = new ftpclient();

with no error message on same tablets:

code follows.

      import org.apache.commons.net.ftp.ftp;       import org.apache.commons.net.ftp.ftpclient;        @override     protected string doinbackground(void... params) {         file file = new file(mdbpath);         try{                                     ftpclient ftpclient = new ftpclient();             inetaddress mhostname;             mhostname = inetaddress.getbyname(mserverip);             ftpclient.connect(mhostname, mport);             ftpclient.login(mlogin, mpassword);             ftpclient.changeworkingdirectory(mworkingdir);             if (ftpclient.getreplystring().contains("250")) {                     ftpclient.setfiletype(ftp.binary_file_type);                     bufferedoutputstream buffout = new bufferedoutputstream(new fileoutputstream(new file(file, mdbname)));                     ftpclient.enterlocalpassivemode();                     boolean result = ftpclient.retrievefile(mserverfilename, buffout);                     buffout.close();                     ftpclient.logout();                     ftpclient.disconnect();                     if (result == false){                         return "false";                     }             }         } catch (exception e){             return e.getmessage().tostring();         }     return "true"; }

my question is:- don't understand why works in debug mode on same tablets?


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