android中ExpandableListView增加自定义组件

android中ExpandableListView增加自定义组件，点击ExpandableListView自动滚动到顶部

MainActivity.java

package cn.android.widget;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import org.custom.widget.R;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ExpandableListView;
import android.widget.ExpandableListView.OnChildClickListener;
import android.widget.ExpandableListView.OnGroupExpandListener;
import android.widget.Toast;

@SuppressWarnings({"unused", "rawtypes"})
public class MainActivity extends Activity {
	ExpandableListView expandableList;
	TreeViewAdapter adapter;
	
	public List<HashMap<String, Object>> categories;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        setCategoris();
        adapter = new TreeViewAdapter(this);
		expandableList = (ExpandableListView) findViewById(R.id.category_items);
		expandableList.setGroupIndicator(null);
		displayCategories();
    }
    
	public void displayCategories() {
		adapter.RemoveAll();
		adapter.notifyDataSetChanged();

		List<TreeViewAdapter.TreeNode> treeNode = adapter.GetTreeNode();
		for (int i = 0; i < categories.size(); i++) {
			TreeViewAdapter.TreeNode node = new TreeViewAdapter.TreeNode();
			node.parent = categories.get(i);
			List child = ((ArrayList) categories.get(i).get("children"));
			for (int ii = 0; ii < child.size(); ii++) {
				node.childs.add(child.get(ii));
			}
			treeNode.add(node);
		}

		adapter.UpdateTreeNode(treeNode);
		expandableList.setAdapter(adapter);
		
		expandableList.setOnGroupExpandListener(new OnGroupExpandListener() {  
	        @Override  
	        public void onGroupExpand(int groupPosition) {  
				if(groupPosition != 0){
					expandableList.setSelectedGroup(groupPosition);
				}
	        }  
	    }); 
		
		expandableList.setOnChildClickListener(new OnChildClickListener() {
			@Override
			public boolean onChildClick(ExpandableListView arg0, View arg1,
					int parent, int children, long arg4) {

				String str = "parent id:" + String.valueOf(parent)
						+ ",children id:" + String.valueOf(children);
				HashMap map = (HashMap) ((ArrayList) categories.get(parent).get("children")).get(children);
				int catId = (Integer) map.get("cat_id");
				String categoryName = (String) map.get("category_name");
				Toast.makeText(MainActivity.this, "cat_id:" + catId + ", category_name:" + categoryName, Toast.LENGTH_SHORT).show();
				return false;
			}
		});
	}
	
	public void setCategoris() {
		categories = new ArrayList<HashMap<String,Object>>();
		
		HashMap<String, Object> mapFather1 = new HashMap<String, Object>();
		mapFather1.put("cat_id", 1);
		mapFather1.put("drawable", R.drawable.category_new_in_icon);
		mapFather1.put("category_name", "New In");
		mapFather1.put("description", "Dress/Coats/Lace");
		
		ArrayList<HashMap<String, Object>> son1 = new ArrayList<HashMap<String,Object>>();
		HashMap<String, Object> mapSon11 = new HashMap<String, Object>();
		mapSon11.put("cat_id", 6);
		mapSon11.put("drawable", R.drawable.category_dresses1_icon);
		mapSon11.put("category_name", "Dress");
		
		HashMap<String, Object> mapSon12 = new HashMap<String, Object>();
		mapSon12.put("cat_id", 8);
		mapSon12.put("drawable", R.drawable.category_women_coats_icon);
		mapSon12.put("category_name", "Coats");
		
		HashMap<String, Object> mapSon13 = new HashMap<String, Object>();
		mapSon13.put("cat_id", 12);
		mapSon13.put("drawable", R.drawable.category_lace1_icon);
		mapSon13.put("category_name", "Lace");
		
		HashMap<String, Object> mapSon14 = new HashMap<String, Object>();
		mapSon14.put("cat_id", 12);
		mapSon14.put("drawable", R.drawable.category_chiffon1_icon);
		mapSon14.put("category_name", "Chiffon");
		son1.add(mapSon11);
		son1.add(mapSon12);
		son1.add(mapSon13);
		son1.add(mapSon14);
		mapFather1.put("children", son1);
		
		
		
		HashMap<String, Object> mapFather2 = new HashMap<String, Object>();
		mapFather2.put("cat_id", 2);
		mapFather2.put("drawable", R.drawable.category_collection_icon);
		mapFather2.put("category_name", "Shop Collection");
		mapFather2.put("description", "Wintage/Going out/Workwear");
		
		ArrayList<HashMap<String, Object>> son2 = new ArrayList<HashMap<String,Object>>();
		HashMap<String, Object> mapSon21 = new HashMap<String, Object>();
		mapSon21.put("cat_id", 21);
		mapSon21.put("drawable", R.drawable.category_vintage1_icon);
		mapSon21.put("category_name", "Vintage");
		
		HashMap<String, Object> mapSon22 = new HashMap<String, Object>();
		mapSon22.put("cat_id", 22);
		mapSon22.put("drawable", R.drawable.category_going_out1_icon);
		mapSon22.put("category_name", "Going out");
		
		HashMap<String, Object> mapSon23 = new HashMap<String, Object>();
		mapSon23.put("cat_id", 23);
		mapSon23.put("drawable", R.drawable.category_workwear1_icon);
		mapSon23.put("category_name", "Workwear");
		
		HashMap<String, Object> mapSon24 = new HashMap<String, Object>();
		mapSon24.put("cat_id", 24);
		mapSon24.put("drawable", R.drawable.category_designer1_icon);
		mapSon24.put("category_name", "Designer");
		
		HashMap<String, Object> mapSon25 = new HashMap<String, Object>();
		mapSon25.put("cat_id", 24);
		mapSon25.put("drawable", R.drawable.category_sweety1_icon);
		mapSon25.put("category_name", "Sweety");
		
		HashMap<String, Object> mapSon26 = new HashMap<String, Object>();
		mapSon26.put("cat_id", 24);
		mapSon26.put("drawable", R.drawable.category_maxi_dress1_icon);
		mapSon26.put("category_name", "Maxi Dress");
		
		HashMap<String, Object> mapSon27 = new HashMap<String, Object>();
		mapSon27.put("cat_id", 24);
		mapSon27.put("drawable", R.drawable.category_night_club1_icon);
		mapSon27.put("category_name", "Night Club");
		
		HashMap<String, Object> mapSon28 = new HashMap<String, Object>();
		mapSon28.put("cat_id", 24);
		mapSon28.put("drawable", R.drawable.category_print_floral1_icon);
		mapSon28.put("category_name", "Print/Floral");
		
		HashMap<String, Object> mapSon29 = new HashMap<String, Object>();
		mapSon29.put("cat_id", 24);
		mapSon29.put("drawable", R.drawable.category_party1_icon);
		mapSon29.put("category_name", "Party");
		son2.add(mapSon21);
		son2.add(mapSon22);
		son2.add(mapSon23);
		son2.add(mapSon24);
		son2.add(mapSon25);
		son2.add(mapSon26);
		son2.add(mapSon27);
		son2.add(mapSon28);
		son2.add(mapSon29);
		mapFather2.put("children", son2);
		
		HashMap<String, Object> mapFather3 = new HashMap<String, Object>();
		mapFather3.put("cat_id", 3);
		mapFather3.put("drawable", R.drawable.category_women_icon);
		mapFather3.put("category_name", "Clothing");
		mapFather3.put("description", "Dress/Coats/Lace");

		ArrayList<HashMap<String, Object>> son3 = new ArrayList<HashMap<String,Object>>();
		HashMap<String, Object> mapson31 = new HashMap<String, Object>();
		mapson31.put("cat_id", 6);
		mapson31.put("drawable", R.drawable.category_dresses1_icon);
		mapson31.put("category_name", "Dress");
		
		HashMap<String, Object> mapson32 = new HashMap<String, Object>();
		mapson32.put("cat_id", 8);
		mapson32.put("drawable", R.drawable.category_women_coats_icon);
		mapson32.put("category_name", "Coats");
		
		HashMap<String, Object> mapson33 = new HashMap<String, Object>();
		mapson33.put("cat_id", 33);
		mapson33.put("drawable", R.drawable.category_blouses_icon);
		mapson33.put("category_name", "Blouses");
		
		HashMap<String, Object> mapson34 = new HashMap<String, Object>();
		mapson34.put("cat_id", 34);
		mapson34.put("drawable", R.drawable.category_women_tees_icon);
		mapson34.put("category_name", "Tees/Vests");
		
		HashMap<String, Object> mapson35 = new HashMap<String, Object>();
		mapson35.put("cat_id", 35);
		mapson35.put("drawable", R.drawable.category_women_sweaters_icon);
		mapson35.put("category_name", "Sweaters/Cardigans");
		
		HashMap<String, Object> mapson36 = new HashMap<String, Object>();
		mapson36.put("cat_id", 36);
		mapson36.put("drawable", R.drawable.category_women_pants_icon);
		mapson36.put("category_name", "Pants/Shorts");
		
		HashMap<String, Object> mapson37 = new HashMap<String, Object>();
		mapson37.put("cat_id", 37);
		mapson37.put("drawable", R.drawable.category_women_skirt_icon);
		mapson37.put("category_name", "Skirts");
		
		HashMap<String, Object> mapson38 = new HashMap<String, Object>();
		mapson38.put("cat_id", 38);
		mapson38.put("drawable", R.drawable.category_women_leggings_icon);
		mapson38.put("category_name", "Leggings");
		
		HashMap<String, Object> mapson39 = new HashMap<String, Object>();
		mapson39.put("cat_id", 39);
		mapson39.put("drawable", R.drawable.category_women_jumpsuits_icon);
		mapson39.put("category_name", "Jumpsuits");
		
		HashMap<String, Object> mapson40 = new HashMap<String, Object>();
		mapson40.put("cat_id", 40);
		mapson40.put("drawable", R.drawable.category_women_formal_dresses_icon);
		mapson40.put("category_name", "Formal Dress");
		
		HashMap<String, Object> mapson72 = new HashMap<String, Object>();
		mapson72.put("cat_id", 72);
		mapson72.put("drawable", R.drawable.category_women_shapewear);
		mapson72.put("category_name", "Shapewear/Corset");
		
		HashMap<String, Object> mapson73 = new HashMap<String, Object>();
		mapson73.put("cat_id", 73);
		mapson73.put("drawable", R.drawable.category_women_swimwear);
		mapson73.put("category_name", "Swimwear");

		son3.add(mapson31);
		son3.add(mapson32);
		son3.add(mapson33);
		son3.add(mapson34);
		son3.add(mapson35);
		son3.add(mapson36);
		son3.add(mapson37);
		son3.add(mapson38);
		son3.add(mapson39);
		son3.add(mapson40);
		son3.add(mapson72);
		son3.add(mapson73);
		mapFather3.put("children", son3);
		
		HashMap<String, Object> mapFather4 = new HashMap<String, Object>();
		mapFather4.put("cat_id", 4);
		mapFather4.put("drawable", R.drawable.category_shoes_icon);
		mapFather4.put("category_name", "Shoes");
		mapFather4.put("description", "Sandals/Heels/Flats");
		
		ArrayList<HashMap<String, Object>> son4 = new ArrayList<HashMap<String,Object>>();
		HashMap<String, Object> mapson41 = new HashMap<String, Object>();
		mapson41.put("cat_id", 60);
		mapson41.put("drawable", R.drawable.category_shoes_sandals_icon);
		mapson41.put("category_name", "Sandals");
		
		HashMap<String, Object> mapson42 = new HashMap<String, Object>();
		mapson42.put("cat_id", 42);
		mapson42.put("drawable", R.drawable.category_shoes_heels_icon);
		mapson42.put("category_name", "Heels");
		
		HashMap<String, Object> mapson43 = new HashMap<String, Object>();
		mapson43.put("cat_id", 43);
		mapson43.put("drawable", R.drawable.category_shoes_flats_icon);
		mapson43.put("category_name", "Flats");
		
		HashMap<String, Object> mapson44 = new HashMap<String, Object>();
		mapson44.put("cat_id", 44);
		mapson44.put("drawable", R.drawable.category_shoes_boots_icon);
		mapson44.put("category_name", "Boots");
		
		son4.add(mapson41);
		son4.add(mapson42);
		son4.add(mapson43);
		son4.add(mapson44);
		mapFather4.put("children", son4);
		
		HashMap<String, Object> mapFather5 = new HashMap<String, Object>();
		mapFather5.put("cat_id", 5);
		mapFather5.put("drawable", R.drawable.category_bags_icon);
		mapFather5.put("category_name", "Bags");
		mapFather5.put("description", "Dress/Coats/Lace");

		ArrayList<HashMap<String, Object>> son5 = new ArrayList<HashMap<String,Object>>();
		HashMap<String, Object> mapson51 = new HashMap<String, Object>();
		mapson51.put("cat_id", 51);
		mapson51.put("drawable", R.drawable.category_handbags_icon);
		mapson51.put("category_name", "Handbags");
		
		HashMap<String, Object> mapson52 = new HashMap<String, Object>();
		mapson52.put("cat_id", 52);
		mapson52.put("drawable", R.drawable.category_shoulder_bags_icon);
		mapson52.put("category_name", "Shoulder Bags");
		
		HashMap<String, Object> mapson53 = new HashMap<String, Object>();
		mapson53.put("cat_id", 53);
		mapson53.put("drawable", R.drawable.category_backpacks_icon);
		mapson53.put("category_name", "Backpacks");
		
		HashMap<String, Object> mapson54 = new HashMap<String, Object>();
		mapson54.put("cat_id", 54);
		mapson54.put("drawable", R.drawable.category_clutches_icon);
		mapson54.put("category_name", "Clutches/Wallets");
		son5.add(mapson51);
		son5.add(mapson52);
		son5.add(mapson53);
		son5.add(mapson54);
		mapFather5.put("children", son5);
		
		HashMap<String, Object> mapFather6 = new HashMap<String, Object>();
		mapFather6.put("cat_id", 6);
		mapFather6.put("drawable", R.drawable.category_accessorie_icon);
		mapFather6.put("category_name", "Accessories");
		mapFather6.put("description", "Holidays/Necklace/Earrings");
		
		ArrayList<HashMap<String, Object>> son6 = new ArrayList<HashMap<String,Object>>();
		HashMap<String, Object> mapson61 = new HashMap<String, Object>();
		mapson61.put("cat_id", 61);
		mapson61.put("drawable", R.drawable.category_holidays_icon);
		mapson61.put("category_name", "Holidays");
		
		HashMap<String, Object> mapson62 = new HashMap<String, Object>();
		mapson62.put("cat_id", 62);
		mapson62.put("drawable", R.drawable.category_accesories_necklace_icon);
		mapson62.put("category_name", "Necklace");
		
		HashMap<String, Object> mapson63 = new HashMap<String, Object>();
		mapson63.put("cat_id", 63);
		mapson63.put("drawable", R.drawable.category_accesories_earrings_icon);
		mapson63.put("category_name", "Earrings");
		
		HashMap<String, Object> mapson64 = new HashMap<String, Object>();
		mapson64.put("cat_id", 64);
		mapson64.put("drawable", R.drawable.category_accesories_brooch_icon);
		mapson64.put("category_name", "Brooch");
		
		HashMap<String, Object> mapson65 = new HashMap<String, Object>();
		mapson65.put("cat_id", 65);
		mapson65.put("drawable", R.drawable.category_accesories_bracelets_icon);
		mapson65.put("category_name", "Bracelet");
		
		HashMap<String, Object> mapson66 = new HashMap<String, Object>();
		mapson66.put("cat_id", 66);
		mapson66.put("drawable", R.drawable.category_hair_icon);
		mapson66.put("category_name", "Hair Accessories");
		
		HashMap<String, Object> mapson67 = new HashMap<String, Object>();
		mapson67.put("cat_id", 67);
		mapson67.put("drawable", R.drawable.category_silk_scarves_icon);
		mapson67.put("category_name", "Scarves");
		
		son6.add(mapson61);
		son6.add(mapson62);
		son6.add(mapson63);
		son6.add(mapson64);
		son6.add(mapson65);
		son6.add(mapson66);
		son6.add(mapson67);
		mapFather6.put("children", son6);
		
		HashMap<String, Object> mapFather7 = new HashMap<String, Object>();
		mapFather7.put("cat_id", 7);
		mapFather7.put("drawable", R.drawable.category_recommendation_icon);
		mapFather7.put("category_name", "Recommendation");
		mapFather7.put("description", "Hot/New");
		ArrayList<HashMap<String, Object>> son7 = new ArrayList<HashMap<String,Object>>();
		HashMap<String, Object> mapson71 = new HashMap<String, Object>();
		mapson71.put("cat_id", 71);
		mapson71.put("drawable", R.drawable.category_hot_icon);
		mapson71.put("category_name", "Hot");
		
		HashMap<String, Object> mapson720 = new HashMap<String, Object>();
		mapson720.put("cat_id", 72);
		mapson720.put("drawable", R.drawable.category_new_icon);
		mapson720.put("category_name", "New");
		son7.add(mapson71);
		son7.add(mapson720);
		mapFather7.put("children", son7);
		
		categories.add(mapFather1);
		categories.add(mapFather2);
		categories.add(mapFather3);
		categories.add(mapFather4);
		categories.add(mapFather5);
		categories.add(mapFather6);
		categories.add(mapFather7);
		
	}
}

package cn.android.widget;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

import org.custom.widget.R;

import android.content.Context;
import android.util.AttributeSet;
import android.view.Gravity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AbsListView;
import android.widget.BaseExpandableListAdapter;

@SuppressWarnings({"rawtypes"})
public class TreeViewAdapter extends BaseExpandableListAdapter {
	public static final int itemHeight = 140;// 每项的高度

	static public class TreeNode {
		Object parent;
		List<Object> childs = new ArrayList<Object>();
	}

	List<TreeNode> treeNodes = new ArrayList<TreeNode>();
	Context parentContext;

	public TreeViewAdapter(Context view) {
		parentContext = view;
	}

	public List<TreeNode> GetTreeNode() {
		return treeNodes;
	}

	public void UpdateTreeNode(List<TreeNode> nodes) {
		treeNodes = nodes;
	}

	public void RemoveAll() {
		treeNodes.clear();
	}

	public HashMap getChild(int groupPosition, int childPosition) {
		return (HashMap) treeNodes.get(groupPosition).childs.get(childPosition);
	}

	public int getChildrenCount(int groupPosition) {
		return treeNodes.get(groupPosition).childs.size();
	}

	static public CustomImageButton getTextView(Context context, int itemHeight) {
		AttributeSet attrs = null;
		AbsListView.LayoutParams lp = new AbsListView.LayoutParams(ViewGroup.LayoutParams.FILL_PARENT, itemHeight);
		CustomImageButton imageButton = new CustomImageButton(context, attrs);
		imageButton.setLayoutParams(lp);
		imageButton.setGravity(Gravity.CENTER_VERTICAL | Gravity.LEFT);
		return imageButton;
	}

	public View getChildView(int groupPosition, int childPosition,
			boolean isLastChild, View convertView, ViewGroup parent) {
		CustomImageButton imageButton = getTextView(this.parentContext, itemHeight - 30);
		imageButton.setImageResource((Integer) getChild(groupPosition, childPosition).get("drawable"));
		imageButton.setTextViewText((String) getChild(groupPosition, childPosition).get("category_name"));
		imageButton.setTextViewDescriptionVisibility(true);
		imageButton.setImageViewArrowVisibility(true);
		imageButton.setTextSize(12.0f);
		imageButton.setBackgroundColor(android.graphics.Color.WHITE);
		return imageButton;
	}

	public View getGroupView(int groupPosition, boolean isExpanded,
			View convertView, ViewGroup parent) {
		CustomImageButton imageButton = getTextView(this.parentContext, itemHeight);
		imageButton.setImageResource((Integer) getGroup(groupPosition).get("drawable"));
		imageButton.setTextViewText((String) getGroup(groupPosition).get("category_name"));
		imageButton.setTextViewDescription((String) getGroup(groupPosition).get("description"));
		imageButton.setDescriptionColor(0xFF5D5D5D);
		imageButton.setDescriptionSize(10.0f);
		imageButton.setBackgroundColor(parentContext.getResources().getColor(R.color.gray));
		return imageButton;
	}

	public long getChildId(int groupPosition, int childPosition) {
		return childPosition;
	}

	public HashMap getGroup(int groupPosition) {
		return (HashMap) treeNodes.get(groupPosition).parent;
	}

	public int getGroupCount() {
		return treeNodes.size();
	}

	public long getGroupId(int groupPosition) {
		return groupPosition;
	}

	public boolean isChildSelectable(int groupPosition, int childPosition) {
		return true;
	}

	public boolean hasStableIds() {
		return true;
	}
}

package cn.android.widget;

import org.custom.widget.R;
import android.content.Context;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.TextView;

public class CustomImageButton extends RelativeLayout {
	private ImageView imageView;
	private TextView textView;
	private TextView textDescription;
	private ImageView imageViewArrow;

	public CustomImageButton(Context context) {
		super(context);
	}
	public CustomImageButton(Context context, AttributeSet attrs) {
		super(context, attrs);

		LayoutInflater inflater = (LayoutInflater) context
				.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
		inflater.inflate(R.layout.custom_image_button, this);
		imageView = (ImageView) findViewById(R.id.custom_image_button_thumb);
		textView = (TextView) findViewById(R.id.custom_image_button_text);
		textDescription = (TextView) findViewById(R.id.custom_image_button_description);
		imageViewArrow = (ImageView) findViewById(R.id.custom_image_view_arrow);
	}

	/**
	 * 
	 * 设置图片资源
	 */
	public void setImageResource(int resId) {
		imageView.setImageResource(resId);
	}

	/**
	 * 
	 * 设置显示的文字
	 */

	public void setTextViewText(String text) {
		textView.setText(text);
	}

	/**
	 * 设置显示的文字的说明
	 */
	public void setTextViewDescription(String text) {
		textDescription.setText(text);
	}

	/**
	 * 设置显示的文字的说明是否隐藏
	 */
	public void setTextViewDescriptionVisibility(boolean bool) {
		if (bool) {
			textDescription.setVisibility(GONE);
		}
	}

	/**
	 * 设置显示的右侧箭头是否显示
	 */
	public void setImageViewArrowVisibility(boolean bool) {
		if (bool) {
			imageViewArrow.setVisibility(VISIBLE);
		}
	}

	/**
	 * 
	 * 设置显示的文字字体大小
	 */

	public void setTextSize(float size) {
		textView.setTextSize(size);
	}

	/**
	 * 
	 * 设置显示简介的文字字体大小
	 */

	public void setDescriptionSize(float size) {
		textDescription.setTextSize(size);
	}

	/**
	 * 
	 * 设置显示的文字字体颜色
	 */

	public void setTextColor(int color) {
		textView.setTextColor(color);
	}

	/**
	 * 
	 * 设置显示的简介文字字体颜色
	 */
	public void setDescriptionColor(int color) {
		textDescription.setTextColor(color);
	}
}

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@id/custom_image_button_layout"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:gravity="center_vertical">
    <ImageView
        android:id="@id/custom_image_button_thumb"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_vertical"
        android:paddingBottom="0.0dip"
        android:paddingLeft="0.0dip"
        android:paddingTop="0.0dip"
        android:src="@drawable/category_new_in_icon" />
    <TextView
        android:id="@id/custom_image_button_text"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_vertical"
        android:layout_marginLeft="15dip"
        android:text="button"
        android:textColor="@color/black"
        android:paddingTop="10dip"
        android:layout_toRightOf="@id/custom_image_button_thumb" />
    <TextView
        android:id="@id/custom_image_button_description"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_vertical"
        android:layout_marginLeft="15dip"
        android:text="button"
        android:textColor="@color/black"
        android:paddingTop="3dip"
        android:layout_toRightOf="@id/custom_image_button_thumb"
        android:layout_below="@id/custom_image_button_text" />
 	<ImageView
 	    android:id="@id/custom_image_view_arrow"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:gravity="center_vertical"
        android:paddingTop="13.0dip"
        android:paddingRight="5.0dip"
        android:layout_alignParentRight="true"
        android:src="@drawable/categories_right_arrow"
        android:visibility="gone" />
</RelativeLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >
    <ExpandableListView
        android:id="@id/category_items"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:cacheColorHint="#00000000">
    </ExpandableListView>
</LinearLayout>

<?xml version="1.0" encoding="UTF-8"?>
<resources>
    <item type="color" name="black">#FF000000</item>
    <color name="gray">#FFE7E7E7</color>
</resources>

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <item type="id" name="category_items"/>
    <item type="id" name="custom_image_button_layout"/>
    <item type="id" name="custom_image_button_thumb"/>
    <item type="id" name="custom_image_button_text"/>
    <item type="id" name="custom_image_button_description"/>
    <item type="id" name="custom_image_view_arrow"/>
</resources>

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android中ExpandableListView增加自定义组件,,5-wow.com