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);
}
}
TreeViewAdapter.java
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;
}
}
CustomImageButton.java
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);
}
}
custom_image_button.xml
<?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>
main.xml
<?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>
colors.xml
<?xml version="1.0" encoding="UTF-8"?>
<resources>
<item type="color" name="black">#FF000000</item>
<color name="gray">#FFE7E7E7</color>
</resources>
ids.xml
<?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>
效果图
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