database - Why not set the value of Spinner Android. i use Cursor? -

i have table in database called primarydata includes fields primarydataid , primarydatacode .my problem is,when cursor returns data database ,spinner not set values of cursor.

xml spinner file

<?xml version="1.0" encoding="utf-8"?> <textview xmlns:android="http://schemas.android.com/apk/res/android"     android:layout_width="match_parent"     android:layout_height="wrap_content"     android:padding="10dp"     android:textsize="14sp"     android:textcolor= "#000000"     android:spinnermode="dialog" /> 

primarydata class in put primarydataid , primarydatacode. class equivalent of database table.

package com.example.proposaldashborad;  public class primerydata {     private int primerydataid;     private string primerydatacode;       @override     public string tostring() {         return this.primerydatacode; // display in spinner list.     }      public int getprimarydataid() {         return primerydataid;     }      public void setprimarydataid(int value) {         this.primerydataid = value;     }      public int getprimarydatacode() {         return primerydataid;     }      public void setprimarydatacode(string value) {         this.primerydatacode = value;     } } 

this code fill spinner

private void getprimarydataforspinner(string primarydataname, cursor cr) {        cr.movetofirst();     //array_spinner = new string[cr.getcount()];     arraylist<primerydata> pds =  new arraylist<primerydata>() ;      {         //array_spinner[i] = cr.getstring(cr.getcolumnindex("primerydatacode"));          primerydata pd = new primerydata() ;         pd.setprimarydataid(cr.getint(cr.getcolumnindex("primerydataid")));         pd.setprimarydatacode(cr.getstring(cr.getcolumnindex("primerydatacode")));         pds.add(pd) ;         } while (cr.movetonext());      cr.close();      if (primarydataname == "admin") {         adapteradmin = new arrayadapter<primerydata>(this,r.layout.spinner, pds);         sadmin = (spinner) findviewbyid(r.id.spinneradmin);         sadmin.setadapter(adapteradmin);             } } 

and code when data returned database.

 private spinner sadmin;     private arrayadapter<primerydata> adapteradmin;     db = new dbadapter(getapplicationcontext());     db.open();     cr = db.getviewmt26(entityid);     cr.movetofirst();      if(cr.getcount()>0) {                 primerydata pd = new primerydata();                 pd.setprimarydataid(cr.getint(cr.getcolumnindex("adminid")));                    pd.setprimarydatacode(cr.getstring(cr.getcolumnindex("admin")));                    sadmin.setselection(adapteradmin.getposition(pd));            }     cr.close();     db.close(); 

my main question why

adapteradmin.getposition (pd));

returns -1?

you have initialize adapteradmin, , set spinner setadapter method. furthermore, if using list of primerydata, text displayed on each spinner item primerydata (instance) tostring().