Android listview arrange alphabetically -


i have listview .item in listview come database . problem item have not arrange in alphabetically order.help me solve problem.this listview activity code

this code of datalist activity.

public class datalistactivity extends activity  {  listview listview; sqlitedatabase sqlitedatabase; fooddbhelper fooddbhelper; cursor cursor; listdataadapter listdataadapter; private button button1; listdataadapter dataadapter = null; button button; dataprovider dataprovider; arraylist<hashmap<string, string>> namesslist; edittext inputsearch; string search_name; @override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     requestwindowfeature(window.feature_no_title);     setcontentview(r.layout.data_list_layout);      listview = (listview) findviewbyid(r.id.list_view);      listdataadapter = new listdataadapter(getapplicationcontext(),             r.layout.row_layout) {          @override         protected void showcheckedbutton(int position, boolean value) {             // todo auto-generated method stub              dataprovider item = (dataprovider) listdataadapter                     .getitem(position);             log.i("", "");              item.setselected(value);              button mybutton = (button) findviewbyid(r.id.findselected);             mybutton.setonclicklistener(new view.onclicklistener() {                  @override                 public void onclick(view v) {                      stringbuffer responsetext = new stringbuffer();                     responsetext                            .append("the following dishes selected...\n");                      arraylist<dataprovider> list = listdataadapter                             .getselectedindexes();                      int sum = 0;                     (int = 0; < list.size(); i++) {                         dataprovider dataprovider = list.get(i);                          sum = sum + dataprovider.getcalorie();                          responsetext.append("\n" + dataprovider.getname()                                 + " : " + dataprovider.getcalorie()                                 + " kcal"                                 );                      }                      toast.maketext(getapplicationcontext(), ""+responsetext+"\n"+"................................."                                    +"\n"+"total calories in menu : " +sum,                             toast.length_long).show();                  }             });          }                    };     listview.setadapter(listdataadapter);     fooddbhelper = new fooddbhelper(getapplicationcontext());     sqlitedatabase = fooddbhelper.getreadabledatabase();     cursor = fooddbhelper.getinformations(sqlitedatabase);     if (cursor.movetofirst()) {         {             string name, quantity, fat, protein, sugar, vitamins;             boolean selected = false;             string names = null;             integer calorie;              name = cursor.getstring(0);             quantity = cursor.getstring(1);             calorie = integer.valueof(cursor.getstring(2));             fat = cursor.getstring(3);             protein = cursor.getstring(4);             sugar = cursor.getstring(5);             vitamins = cursor.getstring(6);              dataprovider dataprovider = new dataprovider(name, quantity,                     calorie, fat, protein, sugar, vitamins, names, selected);              listdataadapter.add(dataprovider);          } while (cursor.movetonext());       }

this dbhelper class

public cursor getinformations(sqlitedatabase db){     cursor cursor;     string[] projections = {food.newdishinfo.dish_name,food.newdishinfo.dish_quantity,             food.newdishinfo.dish_calorie,food.newdishinfo.dish_fat,food.newdishinfo.dish_protein,             food.newdishinfo.dish_sugar, food.newdishinfo.dish_vitamins};     cursor= db.query(food.newdishinfo.table_name,projections,null,null,null,null,null);     return cursor; }  public cursor getfood(string dish_name,sqlitedatabase sqlitedatabase) {     string[] projections = { food.newdishinfo.dish_quantity, food.newdishinfo.dish_calorie, food.newdishinfo.dish_fat,             food.newdishinfo.dish_protein, food.newdishinfo.dish_sugar, food.newdishinfo.dish_vitamins};     string selection = food.newdishinfo.dish_name+" ?";     string[] selection_args = {dish_name};     cursor cursor = sqlitedatabase.query(food.newdishinfo.table_name,projections,selection,selection_args,null,null,null);      return cursor;  }

you have add order query:

public cursor getinformations(sqlitedatabase db){     cursor cursor;     string[] projections = {food.newdishinfo.dish_name,food.newdishinfo.dish_quantity,             food.newdishinfo.dish_calorie,food.newdishinfo.dish_fat,food.newdishinfo.dish_protein,             food.newdishinfo.dish_sugar, food.newdishinfo.dish_vitamins};     cursor= db.query(food.newdishinfo.table_name,projections,null,null,null,null, "column_name asc");     return cursor; }  public cursor getfood(string dish_name,sqlitedatabase sqlitedatabase) {     string[] projections = { food.newdishinfo.dish_quantity, food.newdishinfo.dish_calorie, food.newdishinfo.dish_fat,             food.newdishinfo.dish_protein, food.newdishinfo.dish_sugar, food.newdishinfo.dish_vitamins};     string selection = food.newdishinfo.dish_name+" ?";     string[] selection_args = {dish_name};     cursor cursor = sqlitedatabase.query(food.newdishinfo.table_name,projections,selection,selection_args,null,null, "column_name asc");      return cursor;  }

asc means ascending , desc means descending.


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