Gallery 的 Demo(13)

            return children[groupPosition][childPosition]; 
        } 
 
        @Override 
        public long getChildId(int groupPosition, int childPosition) { 
            return childPosition; 
        } 
 
        @Override 
        public int getChildrenCount(int groupPosition) { 
            return children[groupPosition].length; 
        } 
 
        // 取子列表中的某一项的 View 
        @Override 
        public View getChildView(int groupPosition, int childPosition, 
                boolean isLastChild, View convertView, ViewGroup parent) { 
            TextView textView = getGenericView(); 
            textView.setText(getChild(groupPosition, childPosition).toString()); 
            return textView; 
        } 
 
        @Override 
        public Object getGroup(int groupPosition) { 
            return groups[groupPosition]; 
        } 
 
        @Override 
        public int getGroupCount() { 
            return groups.length; 
        } 
 
        @Override 
        public long getGroupId(int groupPosition) { 
            return groupPosition; 
        } 
 
        // 取父列表中的某一项的 View 
        @Override 
        public View getGroupView(int groupPosition, boolean isExpanded, 
                View convertView, ViewGroup parent) {