android - my listview was empty -

i have listview using customadapter. first, try display listvew arrayadapter , item seems good. when try change them custom adapter item gone. here arraylist

public arraylist<hashmap<string,string>> getallassignment() {     arraylist<hashmap<string,string>> daftarassignment = new arraylist<hashmap<string,string>>();     cursor cursor = database.rawquery("select customer.name assignment, customer where"+     " assignment.customerid=customer.customerid , employeeid = '"+globals.salesid+"'", null);     cursor.movetofirst();     if (cursor.movetofirst()) {         {             map1 = new hashmap<string,string>();              name=cursor.getstring(cursor.getcolumnindex(dbhelper.name));             map1.put("one",string.valueof(daftarassignment.size()));             map1.put("two",name);            daftarassignment.add(map1);           } while (cursor.movetonext());     }     cursor.close();     return daftarassignment;   }  

here adapter

listassignment= datasource.getallassignment(); adapter = new customadapter(listassignment.this, listassignment, r.layout.item_list,                 new string[] {"two"},                 new int[] {r.id.edtype}); 

and customadapter()

package ims.app.mobileorder; import java.util.arraylist; import java.util.hashmap; import android.content.context; import android.graphics.color; import android.view.view; import android.view.viewgroup; import android.widget.simpleadapter;  public class customadapter extends simpleadapter{     private int[] colors = new int[] { color.parsecolor("#3bb9ff"), color.parsecolor("#306eff") };       public customadapter(context context, arraylist<hashmap<string,string>> mylist, int itemto,               string[] from, int[] to) {       super(context, mylist, itemto, from, to);     }     @override     public view getview(int position, view convertview, viewgroup parent) {         view view = super.getview(position, convertview, parent);         int colorpos = position % colors.length;         view.setbackgroundcolor(colors[colorpos]);         return view;     }  } 

your customadapter should :

public class customadapter extends baseadapter {     public static final string key_id = "id";     public static final string key_title = "title";     public static final string key_message = "message";      private activity activity;     private arraylist<hashmap<string, string>> data;     private static layoutinflater inflater=null;      public customadapter(activity activity, arraylist<hashmap<string, string>> data) {         this.activity = activity;         this.data=data;          inflater = (layoutinflater)activity.getsystemservice(context.layout_inflater_service);     }      public int getcount() {         return data.size();     }      public object getitem(int position) {         return position;     }      public long getitemid(int position) {         hashmap<string, string> map = new hashmap<string, string>();         map = data.get(position);         long id = long.valueof(map.get(key_id));          return id;     }      public view getview(int position, view convertview, viewgroup parent) {         view view = convertview;         if(convertview==null) {             view = inflater.inflate(r.layout.custom_list_item, null);         }          textview title = (textview)view.findviewbyid(r.id.list_item_title);         textview message = (textview)view.findviewbyid(r.id.list_item_message);          hashmap<string, string> map = new hashmap<string, string>();          map = data.get(position);          title.settext(map.get(key_title));         message.settext(map.get(key_message));          return view;     } } 

and when adding item on activity :

arraylist<hashmap<string, string>> data = new arraylist<hashmap<string, string>>();  for(int = 0; < 10; i++) { hashmap<string, string> map = new hashmap<string, string>(); map.put(customadapter.key_id, string.valueof(i)); map.put(customadapter.key_title, "title " + i); map.put(customadapter.key_message, "message " + i); data.add(map); }  madapter = new customadapter(this, data); mlist.setadapter(madapter); 

and xml :

<?xml version="1.0" encoding="utf-8"?> <linearlayout     xmlns:android="http://schemas.android.com/apk/res/android"     android:layout_width="fill_parent"     android:layout_height="wrap_content"     android:orientation="vertical"     android:padding="4dip" >         <textview             android:id="@+id/list_item_title"             android:layout_width="fill_parent"             android:layout_height="fill_parent"             android:textstyle="bold"         />         <textview             android:id="@+id/list_item_message"             android:layout_width="fill_parent"             android:layout_height="fill_parent"             android:textstyle="italic"         /> </linearlayout>