android - Spinner in custom dialog won't populate -


so have custom dialog layout has spinner within it. trying populate seems remain empty. please help!

activity 

@override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     this.requestwindowfeature(window.feature_no_title);     setcontentview(r.layout.activity_upcoming);      itemlist = (listview) findviewbyid(r.id.listview1);      departmentdialogview = (view)getlayoutinflater().inflate(r.layout.custom_filter_department_dialog, null);       spinner spindepartment = (spinner) departmentdialogview.findviewbyid(r.id.spinner_department);      db = new databasehelper(getapplicationcontext());      allitems = db.getallitems();     allproducts = db.getallproducts();     departments = this.getdepartments();         //set department spinner      string[] itemsdepartment = departments.toarray(new string[departments.size()]);      arrayadapter<string> spinnerarrayadapter = new arrayadapter<string>(this,android.r.layout.simple_spinner_item,itemsdepartment);      spinnerarrayadapter.setdropdownviewresource(android.r.layout.simple_spinner_dropdown_item);     spindepartment.setadapter(spinnerarrayadapter);

custom dialog layout xml

<spinner android:id="@+id/spinner_department" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_alignparentleft="true" android:layout_centervertical="true" />  </relativelayout>


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