select all check box in android listview -

in application, tried create list multiple check boxes.

for tried 1 listview android.r.layout.simple_list_item_multiple_choice multiple choice in listview.

my listview in xml as,..

<listview         android:id="@android:id/list"         android:layout_width="match_parent"         android:layout_height="468dp"         android:choicemode="multiplechoice"         android:divider="#b5b5b5"         android:dividerheight="1dp" > 

and use checkbox select/deselect checkbox in listview as

   <checkbox             android:id="@+id/select_all"             android:layout_width="120dp"             android:layout_height="wrap_content"             android:layout_column="2"             android:textsize="18dp"             android:text="select all" /> 

and java code as,..

selectall.setonclicklistener(new onclicklistener() {          public void onclick(view v) {             // todo auto-generated method stub             int size = 0;             boolean ischecked = selectall.ischecked();             if (ischecked == true) {                 size = getlistview().getcount();                 (int = 0; <= size; i++)                     l1.setitemchecked(i, true);             } else if(ischecked==false)             {                 size = getlistview().getcount();                 (int = 0; <= size; i++)                     l1.setitemchecked(i, false);             }         }     }); 

here have assigned l1 listview. select check box working select/deselect check boxes in listview.

but, if deselect 1 of item after clicking select check box, not un-checking..

and if select check boxes in list manually means, select checkbox needs checked automatically..

i used following codes listadapter

arrayadapter<string> adapter1 = new arrayadapter<string>        (this,android.r.layout.simple_list_item_multiple_choice,list);      setlistadapter(adapter1);      l1=getlistview(); 

i'm trying achieve solution..

you use hashmap or list of theobjectrow keep track of sheckbox checked boolean.

then when click on checkall update boolean in list true , youradapter.notifydatasetchanged();

of course in adapter (baseadapter example) use hashmap/list in getview init cells.

if(list.get(position).ischecked()){     cellholder.checkbox.setchecked(true); } else{     cellholder.checkbox.setchecked(false); } 

all boolean @ true checkbox ll checked (the same logic goes uncheck)

hope luck