Android ExpandableListView显示模板

以下是expandexample.java. 拷贝后即可运行：

package com.xx.xx.xxxxx  
import java.util.ArrayList;  
import java.util.List;  
import Android.app.Activity;  
import android.os.Bundle;  
import android.view.Gravity;  
import android.view.View;  
import android.view.ViewGroup;  
import android.widget.AbsListView;  
import android.widget.BaseExpandableListAdapter;  
import android.widget.ExpandableListView;  
import android.widget.LinearLayout;  
import android.widget.TextView;  
public class pdfOutlineList extends Activity {  
    private ExpandableListView mElv;  
    private LinearLayout mLayout;  
    private List<String> mGroupArray;    
    private List<List<String>> mChildArray;  
    @Override  
    public void onCreate(Bundle savedInstanceState) {  
        super.onCreate(savedInstanceState);  
        mLayout = new LinearLayout(this);  
        mElv = new ExpandableListView(this);   
        mGroupArray = new ArrayList<String>();    
        mChildArray = new ArrayList<List<String>>();    
            
        mGroupArray.add("第一行");    
        mGroupArray.add("第二行");    
        List<String> tempArray = new ArrayList<String>();    
        tempArray.add("第一条");    
        tempArray.add("第二条");    
        tempArray.add("第三条");    
        for(int index = 0; index <mGroupArray.size(); ++index)    
        {    
            mChildArray.add(tempArray);    
        }  
        mElv.setAdapter(new ExpandableAdapter(this));    
        mLayout.addView(mElv);  
        setContentView(mLayout);  
    }  
    public class ExpandableAdapter extends BaseExpandableListAdapter    
    {    
        Activity activity;    
        public ExpandableAdapter(Activity a)  
        {    
            activity = a;    
        }  
        public Object getChild(int groupPosition, int childPosition)    
        {    
            return mChildArray.get(groupPosition).get(childPosition);    
        }    
        public long getChildId(int groupPosition, int childPosition)    
        {    
            return childPosition;    
        }    
        public int getChildrenCount(int groupPosition)    
        {    
            return mChildArray.get(groupPosition).size();    
        }    
        public View getChildView(int groupPosition, int childPosition,    
                boolean isLastChild, View convertView, ViewGroup parent)    
        {    
            String string = mChildArray.get(groupPosition).get(childPosition);    
            return getGenericView(string);    
        }    
   
        public Object getGroup(int groupPosition)    
        {    
            return mGroupArray.get(groupPosition);    
        }    
        public int getGroupCount()    
        {    
            return mGroupArray.size();  
        }    
        public long getGroupId(int groupPosition)    
        {    
            return groupPosition;    
        }    
        public View getGroupView(int groupPosition, boolean isExpanded,    
                View convertView, ViewGroup parent)    
        {    
            String string = mGroupArray.get(groupPosition);    
            return getGenericView(string);    
        }    
        public TextView getGenericView(String string)    
        {  
            AbsListView.LayoutParams layoutParams = new AbsListView.LayoutParams(    
                    ViewGroup.LayoutParams.FILL_PARENT, 64);    
            TextView text = new TextView(activity);    
            text.setLayoutParams(layoutParams);    
            text.setGravity(Gravity.CENTER_VERTICAL | Gravity.LEFT);    
            text.setPadding(36, 0, 0, 0);    
            text.setText(string);    
            return text;    
        }    
        public boolean hasStableIds()    
        {    
            return false;    
        }    
        public boolean isChildSelectable(int groupPosition, int childPosition)    
        {    
            return true;    
        }  
    }  
}