<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"   android:orientation="vertical">   <ExpandableListView    android:id="@+id/list"    android:layout_width="match_parent"     android:layout_height="wrap_content"     android:childIndicator="@drawable/ic_launcher"    /></LinearLayout>

package com.example.expandablelistview;import android.app.Activity;import android.app.ActionBar;import android.app.Fragment;import android.content.Context;import android.os.Bundle;import android.view.Gravity;import android.view.LayoutInflater;import android.view.Menu;import android.view.MenuItem;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;import android.os.Build;public class MainActivity extends Activity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        //创建一个BaseExpandableListAdapter对象        ExpandableListAdapter adapter=new BaseExpandableListAdapter(){            int[] logos=new int[]{                    R.drawable.p,R.drawable.z,R.drawable.t            };            private String[] armTypes=new String[]{                "神族兵种","虫族兵种","人族兵种"                };            private String[][] arms=new String[][]{                    {"狂战士","龙骑士","黑暗圣堂","点兵"},                    {"小狗","刺蛇","飞龙","自爆飞机"},                    {"机枪兵","护士mm","幽灵"}            };            @Override            public int getGroupCount() {                return arms.length;            }            @Override            public int getChildrenCount(int groupPosition) {                                return arms[groupPosition].length;            }            @Override            public Object getGroup(int groupPosition) {                return armTypes[groupPosition];            }            @Override            public Object getChild(int groupPosition, int childPosition) {                return arms[groupPosition][childPosition];            }            @Override            public long getGroupId(int groupPosition) {                return groupPosition;            }            @Override            public long getChildId(int groupPosition, int childPosition) {                return childPosition;            }            @Override            public boolean hasStableIds() {                return true;            }            @Override            public View getGroupView(int groupPosition, boolean isExpanded,                    View convertView, ViewGroup parent) {                LinearLayout ll=new LinearLayout(MainActivity.this);                ll.setOrientation(0);                ImageView logo=new ImageView(MainActivity.this);                logo.setImageResource(logos[groupPosition]);                ll.addView(logo);                TextView textView=getTextView();                textView.setText(getGroup(groupPosition).toString());                ll.addView(textView);                return ll;            }            private TextView getTextView(){                AbsListView.LayoutParams lp=new AbsListView.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,64);                TextView textView=new TextView(MainActivity.this);                textView.setLayoutParams(lp);                textView.setGravity(Gravity.CENTER_VERTICAL|Gravity.LEFT);                textView.setPadding(36, 0,0,0);                textView.setTextSize(20);                return textView;            }            @Override            public View getChildView(int groupPosition, int childPosition,                    boolean isLastChild, View convertView, ViewGroup parent) {                TextView textView=getTextView();                textView.setText(getChild(groupPosition,childPosition).toString());                return textView;            }            @Override            public boolean isChildSelectable(int groupPosition,                    int childPosition) {                return true;            }                    };        ExpandableListView expandableView=(ExpandableListView) findViewById(R.id.list);    expandableView.setAdapter(adapter);    }}