二级列表

package com.bwie.main;

import java.io.IOException;

import java.io.InputStreamReader;

import java.io.UnsupportedEncodingException;

import java.util.ArrayList;

import java.util.List;

import android.content.ContentValues;

import android.content.SharedPreferences;

import android.content.SharedPreferences.Editor;

import android.os.Bundle;

import android.support.v4.app.Fragment;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.BaseExpandableListAdapter;

import android.widget.ExpandableListView;

import android.widget.ExpandableListView.OnGroupClickListener;

import android.widget.TextView;

import com.bwie.dao.Dao;

import com.bwie.jichu.DataJichu;

import com.bwie.jichu.Jichu;

import com.example.android_00_monthexam_gson.R;

import com.google.gson.Gson;

import com.google.gson.JsonIOException;

import com.google.gson.JsonSyntaxException;

public class Fragment1 extends Fragment {

private List jichu = new ArrayList();

private List groupjichu = new ArrayList();

private List(List(String)) childjichu = new ArrayList();

private ExpandableListView exlv;

private Dao dao;

private boolean add;

private SharedPreferences spfe;

//二级列表 点击一个开一个
private int lastClick = -1;//上一次点击的group的position

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// TODO Auto-generated method stub
View f1 = View.inflate(getActivity(), R.layout.f1, null);
spfe = getActivity().getSharedPreferences("1409A1", 1);
add = spfe.getBoolean("add", true);
dao = new Dao(getActivity());
ShowJichu();
exlv = (ExpandableListView) f1.findViewById(R.id.exlv1);
exlv.setAdapter(new Myadapter());
exlv.setOnGroupClickListener(new OnGroupClickListener() {
public boolean onGroupClick(ExpandableListView parent, View v,
int groupPosition, long id) {

if(lastClick == -1)
{
exlv.expandGroup(groupPosition);
}

if(lastClick != -1 && lastClick != groupPosition)
{
exlv.collapseGroup(lastClick);
exlv.expandGroup(groupPosition);
}
else if(lastClick == groupPosition)
{
if(exlv.isGroupExpanded(groupPosition))
exlv.collapseGroup(groupPosition);
else if(!exlv.isGroupExpanded(groupPosition))
exlv.expandGroup(groupPosition);
}

lastClick = groupPosition;
return true;
}
});
return f1;
}

// 解析Gson
public void ShowJichu() {
Gson gson = new Gson();
try {
DataJichu datajichu = gson.fromJson(new InputStreamReader(
getActivity().getAssets().open("base.json"), "gbk"),
DataJichu.class);
jichu = datajichu.getData();

for (Jichu ji : jichu) {
// 第一个集合
groupjichu.add(ji.getTitle());
// 第二个集合
List<String> list = new ArrayList<String>();
list.add(ji.getReference());
childjichu.add(list);
if (add) {
ContentValues values = new ContentValues();
values.put("timu", ji.getTitle());
values.put("daan", ji.getReference());
values.put("biaoji", "基础");
dao.insert(values);
Editor editor = spfe.edit();
editor.putBoolean("add", false);
editor.commit();
}
}
} catch (JsonSyntaxException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (JsonIOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}

// 适配器
class Myadapter extends BaseExpandableListAdapter {

@Override
public int getGroupCount() {
// TODO Auto-generated method stub
return groupjichu.size();
}

@Override
public int getChildrenCount(int groupPosition) {
// TODO Auto-generated method stub
return childjichu.get(groupPosition).size();
}

@Override
public Object getGroup(int groupPosition) {
// TODO Auto-generated method stub
return null;
}

@Override
public Object getChild(int groupPosition, int childPosition) {
// TODO Auto-generated method stub
return null;
}

@Override
public long getGroupId(int groupPosition) {
// TODO Auto-generated method stub
return 0;
}

@Override
public long getChildId(int groupPosition, int childPosition) {
// TODO Auto-generated method stub
return 0;
}

@Override
public boolean hasStableIds() {
// TODO Auto-generated method stub
return false;
}

@Override
public View getGroupView(int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent) {
convertView = View
.inflate(getActivity(), R.layout.exlv_item1, null);
TextView tv_title = (TextView) convertView
.findViewById(R.id.tv_titile);
tv_title.setText(groupjichu.get(groupPosition));
convertView.setBackgroundResource(R.drawable.listview_bg);
return convertView;
}

@Override
public View getChildView(int groupPosition, int childPosition,
boolean isLastChild, View convertView, ViewGroup parent) {
convertView = View
.inflate(getActivity(), R.layout.exlv_item2, null);
TextView tv_reference = (TextView) convertView
.findViewById(R.id.tv_reference);
tv_reference.setText(childjichu.get(groupPosition).get(
childPosition));
convertView.setBackgroundResource(R.drawable.guide_pop);
return convertView;
}

@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
// TODO Auto-generated method stub
return true;
}

}

}