android - Downlad PDF from URL -

i have written code download files url. downloaded doc , jpg files. pdf files not downloaded , shows com.android.volley.clienterror. url contains "શુભમ08_23_2016_06_05_33.pdf". problem because of gujrati characters in url?

this code:

inputstreamvolleyrequest request = new inputstreamvolleyrequest(request.method.get, murl,                         new response.listener<byte[]>()                         {                             @override                             public void onresponse(byte[] response) {                                 // todo handle response                                 try {                                     if (response!=null) {                                         pd.dismiss();                                         fileoutputstream outputstream;                                         features features=new features(context);                                          string name=features.findname(murl);;//<file_name_with_extension e.g reference.txt>                                         file sdcard = environment.getexternalstoragedirectory();                                         file dir = new file (sdcard.getabsolutepath() + "/aio");                                         if (!dir.isdirectory())                                         {                                             dir.mkdirs();                                         }                                          file file = new file(dir, name);                                          fileoutputstream f = new fileoutputstream(file);                                         //f=context.openfileoutput(name, context.mode_private);                                         f.write(response);                                         f.close();                                         features.toastcenter("file downloaded in aio folder",true);                                           intent intent = new intent(intent.action_view);                                         string extension=features.findextension(murl);                                         intent.setdataandtype(uri.fromfile(file),"application/"+extension);                                         intent.setflags(intent.flag_activity_clear_top);                                         intent.setflags(intent.flag_activity_new_task);                                         try                                         {                                             boolean isfileopened=false;                                             try                                             {                                                 context.startactivity(intent);                                                 isfileopened=true;                                             }                                             catch (exception e)                                             {                                                //don't show message here                                             }                                              if (!isfileopened)                                             {                                                 try                                                 {                                                     intent.setdataandtype(uri.fromfile(file),"application/msword");                                                     intent.setflags(intent.flag_activity_clear_top);                                                     intent.setflags(intent.flag_activity_new_task);                                                     context.startactivity(intent);                                                 }                                                 catch (exception e)                                                 {                                                     features.toastcenter("can not view file",true);                                                 }                                              }                                           }                                         catch (activitynotfoundexception e)                                         {                                           }                                       }                                 } catch (exception e) {                                     // todo auto-generated catch block                                     log.d("key_error", "unable download file");                                     e.printstacktrace();                                 }                             }                         } ,new response.errorlistener() {                      @override                     public void onerrorresponse(volleyerror error) {                         features features=new features(context);                         features.toastcenter("failed download file",true);                         // todo handle error                         error.printstacktrace();                         pd.dismiss();                     }                 }, null);                 requestqueue mrequestqueue = volley.newrequestqueue(context, new hurlstack());                 mrequestqueue.add(request);