Loop through all subviews of an Android view?

I have made a small example of a recursive function:

public void recursiveLoopChildren(ViewGroup parent) {        for (int i = 0; i < parent.getChildCount(); i++) {            final View child = parent.getChildAt(i);            if (child instanceof ViewGroup) {                recursiveLoopChildren((ViewGroup) child);                // DO SOMETHING WITH VIEWGROUP, AFTER CHILDREN HAS BEEN LOOPED            } else {                if (child != null) {                    // DO SOMETHING WITH VIEW                }            }        }    }

The function will start looping over al view elements inside a ViewGroup (from first to last item), if a child is a ViewGroup then restart the function with that child to retrieve all nested views inside that child.

@jqpubliq Is right but if you really want to go through all Views you can simply use the getChildCount() and getChildAt() methods from ViewGroup. A simple recursive method will do the rest.

Try this. Takes all views inside a parent layout & returns an array list of views.

public List<View> getAllViews(ViewGroup layout){        List<View> views = new ArrayList<>();        for(int i =0; i< layout.getChildCount(); i++){            views.add(layout.getChildAt(i));        }        return views;    }