android - spinner cant show data from sd card -


this code add data spinner. first read file name sd card adding spinner. cant work. display first file name.

   file yourdir = new file(catagoryfilepath);         (file f : yourdir.listfiles()) {             if (f.isfile()) {                  mycatagoryfilename = f.getname();              }              try {                 string categoryfilename[] = mycatagoryfilename.split("@");                 for(int = 0; i<categoryfilename.length; i++){                     string catagorydata = categoryfilename[i];                     if (catagorydata.contains("-")) {                         string data[] = catagorydata.split("-");                         string lang = data[0];                         string cat = data[1];                     }                 }                  string catagoryname = categoryfilename[2];               } catch (exception e) {                 e.printstacktrace();             }               catagory = new arraylist<string>();             catagory.add(myfilename);         }

this how set spinner adepter.

catagoryadapter = new arrayadapter<string>(this, r.layout.spinner, catagory);         catagoryadapter.setdropdownviewresource(r.layout.spinner);         myspinnercatagorylist.setadapter(catagoryadapter);

you not adding name in catagory list. make these changes loop running add filenames. 

catagory = new arraylist<string>();  file yourdir = new file(catagoryfilepath);             (file f : yourdir.listfiles()) {                 if (f.isfile()) {                      mycatagoryfilename = f.getname();                  catagory.add(myfilename);//mycatagoryfilename                  }                  try {                     string categoryfilename[] = mycatagoryfilename.split("@");                     for(int = 0; i<categoryfilename.length; i++){                         string catagorydata = categoryfilename[i];                         if (catagorydata.contains("-")) {                             string data[] = catagorydata.split("-");                             string lang = data[0];                             string cat = data[1];                         }                     }                      string catagoryname = categoryfilename[2];                   } catch (exception e) {                     e.printstacktrace();                 }                }

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