 <?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<ExpandableListView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/ecpandable"
/>
</LinearLayout>
package cn.csdn.activity;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AbsListView;
import android.widget.BaseExpandableListAdapter;
import android.widget.ExpandableListAdapter;
import android.widget.ExpandableListView;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
  public class ExpandableListViewActivity extends Activity {
@Override
  protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.expandable_layout);
/** *//**BaseExpandableListAdapter實現了ExpandableListAdapter*/
ExpandableListAdapter adapter = new BaseExpandableListAdapter(){
/** *//**----------定義數組-------------------------------------------------------------------*/
private int[] images = new int[]{
R.drawable.ic_launcher,
R.drawable.stop,
R.drawable.play
 };
private String[] armTypes = new String[]{
"神族","蟲族","人族"
};
private String[][] arms = new String[][]{
{"狂戰士","龍騎士","黑暗圣堂"},
{"小狗","飛龍","自爆妃子"},
{"步兵","傘兵","護士mm"}
};
/**//*===========組元素表示可折疊的列表項，子元素表示列表項展開后看到的多個子元素項=============*/
/** *//**----------得到armTypes和arms中每一個元素的ID-------------------------------------------*/
//獲取組在給定的位置編號，即armTypes中元素的ID
@Override
public long getGroupId(int groupPosition) {
return groupPosition;
}
//獲取在給定的組的兒童的ID，就是arms中元素的ID
@Override
public long getChildId(int groupPosition, int childPosition) {
return childPosition;
}
/** *//**----------根據上面得到的ID的值，來得到armTypes和arms中元素的個數 ------------------------*/
//獲取的群體數量，得到armTypes里元素的個數
@Override
public int getGroupCount() {
return armTypes.length;
}
//取得指定組中的兒童人數，就是armTypes中每一個種族它軍種的個數
@Override
public int getChildrenCount(int groupPosition) {
return arms[groupPosition].length;
}
/** *//**----------利用上面getGroupId得到ID，從而根據ID得到armTypes中的數據，并填到TextView中 -----*/
//獲取與給定的組相關的數據，得到數組armTypes中元素的數據
@Override
public Object getGroup(int groupPosition) {
return armTypes[groupPosition];
}
//獲取一個視圖顯示給定組，存放armTypes
@Override
public View getGroupView(int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent) {
TextView textView = getTextView();//調用定義的getTextView()方法
textView.setText(getGroup(groupPosition).toString());//添加數據
return textView;
}
/** *//**----------利用上面getChildId得到ID，從而根據ID得到arms中的數據，并填到TextView中---------*/
//獲取與孩子在給定的組相關的數據,得到數組arms中元素的數據
@Override
public Object getChild(int groupPosition, int childPosition) {
return arms[groupPosition][childPosition];
}
//獲取一個視圖顯示在給定的組 的兒童的數據，就是存放arms
@Override
public View getChildView(int groupPosition, int childPosition, boolean isLastChild,
View convertView, ViewGroup parent) {
LinearLayout ll = new LinearLayout(ExpandableListViewActivity.this);
ll.setOrientation(0);//定義為縱向排列
ImageView logo = new ImageView(ExpandableListViewActivity.this);
logo.setImageResource(images[groupPosition]);//添加圖片
ll.addView(logo);
TextView textView = getTextView();//調用定義的getTextView()方法
textView.setText(getChild(groupPosition,childPosition).toString());//添加數據
ll.addView(textView);
return ll;
}
/** *//**------------------自定義一個設定TextView屬性的方法----------------------------------------------*/
//定義一個TextView
private TextView getTextView(){
AbsListView.LayoutParams lp = new AbsListView.LayoutParams(ViewGroup.LayoutParams.FILL_PARENT,40);
TextView textView = new TextView(ExpandableListViewActivity.this);
textView.setLayoutParams(lp);
textView.setPadding(36, 0, 0, 0);
textView.setTextSize(20);
return textView;
}
/** *//**-------------------其他設置-------------------------------------------------------------------*/
//孩子在指定的位置是可選的，即：arms中的元素是可點擊的
@Override
public boolean isChildSelectable(int groupPosition,
int childPosition) {
return true;
}
//表示孩子是否和組ID是跨基礎數據的更改穩定
public boolean hasStableIds() {
return true;
}
};
/** *//**使用適配器*/
ExpandableListView expandListView = (ExpandableListView) this.findViewById(R.id.ecpandable);
expandListView.setAdapter(adapter);
}
 }
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