扩展的ListView实例

   今天从网上看了个扩展的listView的例子，感觉还蛮炫，自己也试着做了下。

           由于比较简单，所有就直接上代码：

         

 

 

 

 

public class ExtendedListView extends ExpandableListActivity {  
  
    @Override  
    protected void onCreate(Bundle savedInstanceState) {  
        // TODO Auto-generated method stub  
        super.onCreate(savedInstanceState);  
          
        MyExpandableListAdapter adapter=new MyExpandableListAdapter();  
        setListAdapter(adapter);  
          
    }  
    public class MyExpandableListAdapter extends BaseExpandableListAdapter{  
        public String[] groups={"我的好友","大学同学","高中同学"};  
        public String[][] childrens={{"小张","小李","小丽","向明"},{"向明","向明","向明","向明"},{"向明","向明","向明","向明"}};  
        public Object getChild(int groupPosition, int childPosition) {  
            // TODO Auto-generated method stub  
            return childrens[groupPosition][childPosition];  
        }  
  
        public long getChildId(int groupPosition, int childPosition) {  
            // TODO Auto-generated method stub  
            return childPosition;  
        }  
  
        public View getChildView(int groupPosition, int childPosition,  
                boolean isLastChild, View convertView, ViewGroup parent) {  
            // TODO Auto-generated method stub  
            TextView textView=getGenericView();  
            textView.setText(getChild(groupPosition, childPosition).toString());  
            return textView;  
        }  
        //新建一个TextView  
         public TextView getGenericView() {  
                // Layout parameters for the ExpandableListView  
                AbsListView.LayoutParams lp = new AbsListView.LayoutParams(  
                        ViewGroup.LayoutParams.MATCH_PARENT, 64);  
  
                TextView textView = new TextView(ExtendedListView.this);  
                textView.setLayoutParams(lp);  
                // Center the text vertically  
                textView.setGravity(Gravity.CENTER_VERTICAL | Gravity.LEFT);  
                // Set the text starting position  
                textView.setPadding(36, 0, 0, 0);  
                return textView;  
            }  
              
        public int getChildrenCount(int groupPosition) {  
            // TODO Auto-generated method stub  
            return childrens[groupPosition].length;  
        }  
  
        public Object getGroup(int groupPosition) {  
            // TODO Auto-generated method stub  
            return groups[groupPosition];  
        }  
  
        public int getGroupCount() {  
            // TODO Auto-generated method stub  
            return groups.length;  
        }  
  
        public long getGroupId(int groupPosition) {  
            // TODO Auto-generated method stub  
            return groupPosition;  
        }  
  
        public View getGroupView(int groupPosition, boolean isExpanded,  
                View convertView, ViewGroup parent) {  
            // TODO Auto-generated method stub  
            TextView textView = getGenericView();  
            textView.setText(getGroup(groupPosition).toString());  
            return textView;  
        }  
  
        public boolean hasStableIds() {  
            // TODO Auto-generated method stub  
            return true;  
        }  
  
        public boolean isChildSelectable(int groupPosition, int childPosition) {  
            // TODO Auto-generated method stub  
            return true;  
        }  
          
    }  
}  

    

 

转载自 : http://blog.youkuaiyun.com/wangkuifeng0118/article/details/7095792