android - Custom IDs in ListView -


i'm trying populate listview products. can it, need them have custom id's (the ones sqlite database). how can this? code without id implementation far:

arraylist<string> productnamelist = new arraylist<string>();     arraylist<string> productidlist = new arraylist<string>();     cursor results = mydbhelper.getproducts();     listview lv = (listview) findviewbyid(r.id.productlist);      while (results.movetonext()){         productnamelist.add(results.getstring(results.getcolumnindex("name")));         productidlist.add(results.getstring(results.getcolumnindex("id")));     }       lv.setadapter(new arrayadapter<string>(this,android.r.layout.simple_list_item_1 , productnamelist));

you should use simplecursoradapter: 

    string[] columns = new string[] { "_id", "name" };     int[] = new int[] { android.r.id.text1, android.r.id.text2 };      simplecursoradapter madapter = new simplecursoradapter(this, android.r.layout.simple_list_item_2, cursor, columns, to);     lv.setadapter(madapter));

"to" , "columns" define mapping: "colums" list of database column names want simplecursoradapter read. , "to" list of android ids specifying on widget values cursor set.

in latter code means value of "_id" displayed in textfield android id "android.r.id.text1" , value of column "name" go textfield "android.r.id.text2".


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