View childView = listView.getChildAt(i);
if (childView != null && childView instanceof ViewGroup) {
View checkboxView = getChildViews((ViewGroup) childView);
if (checkboxView != null && checkboxView instanceof CheckBox) {
View childView = listView.getChildAt(i);
if (childView != null && childView instanceof ViewGroup) {
View checkboxView = getChildViews((ViewGroup) childView);
if (checkboxView != null && checkboxView instanceof CheckBox) {