android : Opening a file from the list of files listed in a listview -

i working on project displays list of files directory in sd card. files have displayed .xls files. have xls reader in mobile phone , want open file clicked in listview. here code:

protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         getwindow().setflags(windowmanager.layoutparams.flag_fullscreen,windowmanager.layoutparams.flag_fullscreen);         setrequestedorientation(activityinfo.screen_orientation_sensor_landscape);         setcontentview(r.layout.activity_subjects_list);          final animation myanim = animationutils.loadanimation(this, r.anim.abc_grow_fade_in_from_bottom);         typeface tf = typeface.createfromasset(getassets(), "fonts/myfont.ttf");         subjectslistview = (listview) findviewbyid(r.id.subjectslistview);         addsubjectbutton = (imagebutton) findviewbyid(r.id.subjectslistfabutton);          adapter = new arrayadapter<string>(this,android.r.layout.simple_list_item_1, filelist);         subjectslistview.setadapter(adapter);         subjectslistview.setonitemclicklistener(this);      //attempt connect sd card     string path = environment.getexternalstoragedirectory().tostring() + "/spams excel files";     file dir = new file(path);      file files[] = dir.listfiles();     for(int =0; < files.length; i++){         filelist.add(files[i].getname());     }      addsubjectbutton.setonclicklistener(new onclicklistener() {          @override         public void onclick(view v) {             v.startanimation(myanim);             toast.maketext(getapplicationcontext(), "i touched.",                     toast.length_short).show();              v.postdelayed(new runnable() {                  @override                 public void run() {                     intent goto_addsubj = new intent(subjectslistactivity.this,                             addsubjectactivity.class);                     startactivity(goto_addsubj);                     finish();                 }             }, 130);          }     });   }      @override     public void onitemclick(adapterview<?> parent, view view, int position,         long id) {          textview temp = (textview) view;         toast.maketext(this, temp.gettext() + " " + position,             toast.length_short).show();  } 

i hoping guys! please me. thank :)

what want launch xls reader intent (assuming xls reader has intent can launch with).

when item clicked, grab uri file, , launch intent.

uri uri = new uri(path); intent intent = new intent(intent.action_view); intent.setdataandtype(uri, "application/vnd.ms-excel");  try {     startactivity(intent); }  catch (activitynotfoundexception e) {     toast.maketext(context, "no application available",toast.length_short).show(); }