Android 高仿QQ 好友分组列表

Android 高仿QQ 好友分组列表实现的效果如下：用ExpandableListView实现，先看Activity的代码：

public class BuddyActivity extends Activity {
ExpandableListView expandablelistview;
//群组名称
private String[] group = new String[] { "在线好友", "我的好友", "我的同事"};
//好友名称
private String[][] buddy = new String[][] {
{ "元芳", "雷丶小贱", "狄大人"},
{"高太后", "士兵甲", "士兵乙", "士兵丙" },
{ "艺术家", "叫兽", "攻城师", "职业玩家" }};
public void onCreate（Bundle savedInstanceState） {
super.onCreate（savedInstanceState）;
requestWindowFeature（Window.FEATURE_NO_TITLE）;
setContentView（R.layout.activity_buddy）;
expandablelistview= （ExpandableListView） findViewById（R.id.buddy_expandablelistview）;
ExpandableListAdapter adapter=new BuddyAdapter（this,group,buddy）;
expandablelistview.setAdapter（adapter）;
//分组展开
expandablelistview.setOnGroupExpandListener（new OnGroupExpandListener（）{
public void onGroupExpand（int groupPosition） {
}
}）;
//分组关闭
expandablelistview.setOnGroupCollapseListener（new OnGroupCollapseListener（）{
public void onGroupCollapse（int groupPosition） {
}
}）;
//子项单击
expandablelistview.setOnChildClickListener（new OnChildClickListener（）{
public boolean onChildClick（ExpandableListView arg0, View arg1,
int groupPosition, int childPosition, long arg4） {
Toast.makeText（BuddyActivity.this,
group[groupPosition]+" : "+buddy[groupPosition][childPosition],
Toast.LENGTH_SHORT）.show（）;
return false;
}
}）;
}
}