android - Find all child views for given root view recursively -

i want find child views given root view.

public list<view> getallchildviews(view rootview) {     //return child views given rootview recursively } 

consumer of method pass rootview follows

//client has custom view list<view> childviews = getallchildviews(customview.getrootview());  //get root view of custom view 

i can type cast rootview particular layout , children ( @ leaf level ) not sure type of root view. can scrollview or different layout

 private list<view> getallchildren(view v) {          if (!(v instanceof viewgroup)) {             arraylist<view> viewarraylist = new arraylist<view>();             viewarraylist.add(v);             return viewarraylist;         }          arraylist<view> result = new arraylist<view>();          viewgroup viewgroup = (viewgroup) v;         (int = 0; < viewgroup.getchildcount(); i++) {              view child = viewgroup.getchildat(i);              //do not add parents, add child elements             result.addall(getallchildren(child));         }         return result;     }