二级列表,并实现自动关闭.doc

二级列表，并实现自动关闭package com.sun.erjiliebiao;import java.util.ArrayList;import java.util.List;import android.app.Activity;import android.database.DataSetObserver;import android.os.Bundle;import android.view.View;import android.view.ViewGroup;import android.widget.ExpandableListAdapter;import android.widget.ExpandableListView;import android.widget.ExpandableListView.OnGroupExpandListener;import android.widget.LinearLayout;import android.widget.TextView;public class ErjiliebiaoActivity extends Activity /* Called when the activity is first created. */ ExpandableListAdapter adapter;private String forther = new String第一组,第二组,第三组;private String chrild = new String小狗,小猫,小鱼,小动物,黄河,流水,小桥,大山,城市,山区,森林,大海,ktv,酒店; Override public void onCreate(Bundle savedInstanceState) super.onCreate(savedInstanceState); setContentView(R.layout.main); adapter = new ExpandableListAdapter() Overridepublic void unregisterDataSetObserver(DataSetObserver observer) / TODO Auto-generated method stubOverridepublic void registerDataSetObserver(DataSetObserver observer) / TODO Auto-generated method stubOverridepublic void onGroupExpanded(int groupPosition) / TODO Auto-generated method stubSystem.out.println(被展开-+groupPosition);Overridepublic void onGroupCollapsed(int groupPosition) / TODO Auto-generated method stubSystem.out.println(被关闭-+groupPosition);Overridepublic boolean isEmpty() / TODO Auto-generated method stubreturn true;Overridepublic boolean isChildSelectable(int groupPosition, int childPosition) / TODO Auto-generated method stubreturn true;Overridepublic boolean hasStableIds() / TODO Auto-generated method stubreturn true;Overridepublic View getGroupView(int groupPosition, boolean isExpanded,View convertView, ViewGroup parent) / TODO Auto-generated method stubSystem.out.println(+groupPosition+isExpanded);LinearLayout ll = new LinearLayout(ErjiliebiaoActivity.this);ll.setOrientation(0);TextView textView = new TextView(ErjiliebiaoActivity.this);textView.setText(getGroup(groupPosition).toString();textView.setTextSize(40);ll.addView(textView);return ll;Overridepublic long getGroupId(int groupPosition) / TODO Auto-generated method stubreturn 0;Overridepublic int getGroupCount() / TODO Auto-generated method stubreturn forther.length;Overridepublic Object getGroup(int groupPosition) / TODO Auto-generated method stubreturn forthergroupPosition;Overridepublic long getCombinedGroupId(long groupId) / TODO Auto-generated method stubSystem.out.println(getCombinedGroupId-+groupId);return 0;Overridepublic long getCombinedChildId(long groupId, long childId) / TODO Auto-generated method stubSystem.out.println(getCombinedChildId-+childId);return 0;Overridepublic int getChildrenCount(int groupPosition) / TODO Auto-generated method stubreturn chrildgroupPosition.length;Overridepublic View getChildView(int groupPosition, int childPosition,boolean isLastChild, View convertView, ViewGroup parent) / TODO Auto-generated method stubTextView textView = new TextView(ErjiliebiaoActivity.this);textView.setText(getChild(groupPosition, childPosition).toString();textView.setTextSize(30);return textView;Overridepublic long getChildId(int groupPosition, int childPosition) System.out.println(groupPosition+-+childPosition);return childPosition;Overridepublic Object getChild(int groupPosition, int childPosition) / TODO Auto-generated method stubreturn chrildgroupPositionchildPosition;Overridepublic boolean areAllItemsEnabled() / TODO Auto-generated method stubreturn true; final ExpandableListView ElistView = (ExpandableListView) findViewById(R.id.Elistview); ElistView.setAdapter(adapter); / 对expandablelistview添加一个监听,实现自动关闭 ElistView.setOnGroupExpandListener(new OnGroupExpandL