ListView listView = (ListView)findViewById(R.id.配置文件中ListView的ID);
//全选遍历ListView的选项,每个选项就相当于布局配置文件中的RelativeLayout
for(int i = 0; i < listView.getChildCount(); i++){
View view = listView.getChildAt(i);
CheckBox cb = (CheckBox)view.findViewById(R.id.配置文件中CheckBox的ID);
cb.setChecked(true);
}