Gallery 的 Demo(12)

            int childPos = ExpandableListView.getPackedPositionChild(info.packedPosition); 
             
            Toast.makeText(this, title + " - Group Index: " + groupPos + " Child Index: " + childPos, Toast.LENGTH_SHORT).show(); 
             
            return true; 
        } else if (type == ExpandableListView.PACKED_POSITION_TYPE_GROUP) { 
            int groupPos = ExpandableListView.getPackedPositionGroup(info.packedPosition); 
            Toast.makeText(this, title + " - Group Index: " + groupPos, Toast.LENGTH_SHORT).show(); 
             
            return true; 
        } 
 
        return false; 
    } 
 
    public class MyExpandableListAdapter extends BaseExpandableListAdapter { 
 
        // 父列表数据 
        private String[] groups =  
        {  
            "group1",  
            "group2",  
            "group3", 
            "group4"  
        }; 
        // 子列表数据 
        private String[][] children =  
        { 
            { "child1" }, 
            { "child1", "child2" }, 
            { "child1", "child2", "child3" }, 
            { "child1", "child2", "child3", "child4" } 
        }; 
         
        @Override 
        public Object getChild(int groupPosition, int childPosition) {