我的应用程序使用ExpandableListView，其中包含4个父组和子组。
子行包括ImageView和文本（标志和名称）
到目前为止，我已经使用ExpandableListView为所有孩子的子行创建了相同的图像。
我希望每行ImageView和TextView
我在drawable文件夹中有图像如何在ExpandableListView中使用它。
这是ExpandableList活动的代码，所有chlidren行都有相同的图像。
package com.devleb.expendablelistdemo;
import java.util.ArrayList;
import android.app.Activity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.BaseExpandableListAdapter;
import android.widget.CheckedTextView;
import android.widget.TextView;
import android.widget.Toast;
public class MyExpandableAdapter extends BaseExpandableListAdapter {
private Activity activity;
private ArrayList<Object> childtems;
private LayoutInflater inflater;
private ArrayList<String> parentItems, child;
// constructor
public MyExpandableAdapter(ArrayList<String> parents,
ArrayList<Object> childern) {
this.parentItems = parents;
this.childtems = childern;
}
public void setInflater(LayoutInflater inflater, Activity activity) {
this.inflater = inflater;
this.activity = activity;
}
// method getChildView is called automatically for each child view.
// Implement this method as per your requirement
// method getGroupView is called automatically for each parent item
// Implement this method as per your requirement
@Override
public Object getChild(int groupPosition, int childPosition) {
return null;
}
@Override
public long getChildId(int groupPosition, int childPosition) {
return 0;
}
@Override
public int getChildrenCount(int groupPosition) {
return ((ArrayList<String>) childtems.get(groupPosition)).size();
}
@Override
public Object getGroup(int groupPosition) {
return null;
}
@Override
public int getGroupCount() {
return parentItems.size();
}
@Override
public void onGroupCollapsed(int groupPosition) {
super.onGroupCollapsed(groupPosition);
}
@Override
public void onGroupExpanded(int groupPosition) {
super.onGroupExpanded(groupPosition);
}
@Override
public long getGroupId(int groupPosition) {
return 0;
}
@Override
public boolean hasStableIds() {
return false;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return false;
}
@Override
public View getChildView(int groupPosition, final int childPosition,
boolean isLastChild, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
child = (ArrayList<String>) childtems.get(groupPosition);
TextView textView = null;
if (convertView == null) {
convertView = inflater.inflate(R.layout.child_view, null);
}
// get the textView reference and set the value
textView = (TextView) convertView.findViewById(R.id.textViewChild);
textView.setText(child.get(childPosition));
// set the ClickListener to handle the click event on child item
convertView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
Toast.makeText(activity, child.get(childPosition),
Toast.LENGTH_SHORT).show();
}
});
return convertView;
}
@Override
public View getGroupView(int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
if (convertView == null) {
convertView = inflater.inflate(R.layout.parent_view, null);
}
((CheckedTextView) convertView).setText(parentItems.get(groupPosition));
((CheckedTextView) convertView).setChecked(isExpanded);
return convertView;
}
}
package com.devleb.expendablelistdemo;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import android.app.ExpandableListActivity;
import android.content.Context;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.widget.ExpandableListView;
public class ExpandableListMainActivity extends ExpandableListActivity {
// Create ArrayList to hold parent Items and Child Items
private ArrayList<String> parentItems = new ArrayList<String>();
private ArrayList<Object> childItems = new ArrayList<Object>();
public HashMap<Integer, List<Integer>> childImages;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Create Expandable List and set it's properties
ExpandableListView expandableList = getExpandableListView();
expandableList.setDividerHeight(2);
expandableList.setGroupIndicator(null);
expandableList.setClickable(true);
// Set the Items of Parent
setGroupParents();
// Set The Child Data
setChildData();
// Create the Adapter
MyExpandableAdapter adapter = new MyExpandableAdapter(parentItems,
childItems);
adapter.setInflater(
(LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE),
this);
// Set the Adapter to expandableList
expandableList.setAdapter(adapter);
expandableList.setOnChildClickListener(this);
}
// method to add parent Items
public void setGroupParents() {
parentItems.add("Africa");
parentItems.add("Asia");
parentItems.add("Europe");
parentItems.add("North and Central America");
parentItems.add("South America");
}
// method to set child data of each parent
public void setChildData() {
// Add Child Items for Fruits
ArrayList<String> child = new ArrayList<String>();
child.add("Algeria");
child.add("Côte d'Ivoire");
child.add("Côte d'Ivoire");
child.add("Cameroon");
childItems.add(child);
// Add Child Items for Flowers
child = new ArrayList<String>();
child.add("Australia");
child.add("Japan");
child.add("Iran");
child.add("Korea Republic");
childItems.add(child);
// Add Child Items for Animals
child = new ArrayList<String>();
child.add("Belgium");
child.add("Croatia");
child.add("France");
child.add("Greece");
child.add("Netherlands");
child.add("Russia");
child.add("Switzerland");
child.add("Bosnia and Herzegovina");
child.add("England");
child.add("Germany");
child.add("Italy");
child.add("Portugal");
child.add("Spain");
childItems.add(child);
// Add Child Items for Birds
child = new ArrayList<String>();
child.add("Costa Rica");
child.add(" Mexico");
child.add(" Honduras");
child.add("USA");
childItems.add(child);
// Add Child Items for Birds
child = new ArrayList<String>();
child.add("Argentina");
child.add("Chile");
child.add("Ecuador");
child.add("Brazil");
child.add("Colombia");
child.add("Uruguay");
childItems.add(child);
}
}