adding different child lists for each parent in ExpandableListView for Android? -

i have expandable list view parent list showing store names. child element should first line of address, 1 on each. code sets parent element correctly every parent element contains of child elements rather 1 relating it.

any ideas?

private void preparelistdata() {     listdataheader = new arraylist<string>();     listdatachild = new hashmap<string, list<string>>();         //system.out.println(debugname.get(i));      list<string> top250 = new arraylist<string>();   (int = 0; < debugname.size(); i++) {      storename = debugname.get(i);     listdataheader.add(storename);     listdatachild.put(listdataheader.get(0), top250); 

//store name prints so: store 1, store 2, store 3 etc. 1 each parent element.

}      (int = 0; < address1.size(); i++) {         storeaddress = address1.get(i);          system.out.println(storeaddress); 

//store address prints address store 1, 2, 3 under each parent

        top250.add(storeaddress);           listdatachild.put(listdataheader.get(i), top250);      } 

without seeing more of source code, looks me you're adding all store addresses top250.

listdatachild.put(listdataheader.get(i), top250) therefore assigning store addresses under each header every time.

try changing line listdatachild.put(listdataheader.get(i), top250.get(i)) , see if it's closer wanted.

of course, might not expect yet, because assumes each header has 1 address , listdataheader items matched each top250 item can start there.