<&#63;XMl version="1.0" encoding="utf-8"?> <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"   tools:context=".MainActivITy" >   <!--提示框-->   <TextView     android:layout_width="match_parent"     android:layout_height="wrap_content"     android:text="请选择您的类型："     android:textSize="30sp"     android:textColor="#ffffffff"     android:paddingLeft="5dp"     android:paddingTop="5dp"     android:paddingBottom="5dp"     android:background="#ff000000"/>   <!--定义一个ExpandableListView组件-->   <ExpandableListView     android:id="@+id/list"     android:layout_width="match_parent"     android:layout_height="match_parent">   </ExpandableListView> </LinearLayout>  

 public class MainActivity extends Activity {   @override   PRotected void onCreate(Bundle savedInstancestate) {     suPEr.onCreate(savedInstanceState);     setContentView(R.layout.activity_main);     //创建一个ExpandableListAdapter对象     final ExpandableListAdapter adapter = new ExpandableListAdapter() {       int[] LOGos = new int[]{           R.drawable.human1st,           R.drawable.human1st,           R.drawable.human2nd,           R.drawable.human3rd       };       private String[] humanTypes = new String[]{           "不是人","聪明人","普通人","我这样的人"       };       private String[][] humans = new String[][]{           {"上仙","大神","荷兰猪"},           {"超人","一般聪明人","假的聪明人"},           {"努力的人","快乐的普通人","苦逼的普通人"},           {"天才","傻逼","蠢萌"}       };       //获得制定组的位置、指定子列表项处的字列表项数据       private TextView getTextView(){         AbsListView.LayoutParams layoutParams =             new AbsListView.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,164);         TextView textView = new TextView(MainActivity.this);         textView.setLayoutParams(layoutParams);         textView.setGravity(Gravity.center_VERTICAL | Gravity.LEFT);         textView.setPadding(36,0,0,0);         textView.setTextSize(30);         return textView;       }       @Override       public void registerDataSetObserver(DataSetObserver observer) {       }       @Override       public void unregisterDataSetObserver(DataSetObserver observer) {       }       @Override       public int getGroupCount() {         return humanTypes.length;       }       @Override       public int getChildrenCount(int groupPosition) {         return humans[groupPosition].length;       }       //获取制定组位置处的组数据       @Override       public Object getGroup(int groupPosition) {         return humanTypes[groupPosition];       }       @Override       public Object getChild(int groupPosition, int childPosition) {         return humans[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;       }       //该方法决定每个组选项的外观       @Override       public View getGroupview(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) {         LinearLayout linearLayout = new LinearLayout(MainActivity.this);         linearLayout.setOrientation(LinearLayout.HORIZONTAL);         ImageView logo = new ImageView(MainActivity.this);         logo.setImageResource(logos[groupPosition]);         linearLayout.addView(logo);         TextView textView = getTextView();         textView.setText(getGroup(groupPosition).toString());         linearLayout.addView(textView); //        linearLayout.setMinimumHeight(50);         return linearLayout;       }       @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;       }       @Override       public boolean areAllItemsEnabled() {         return false;       }       @Override       public boolean iSEMpty() {         return false;       }       @Override       public void onGroupExpanded(int groupPosition) {       }       @Override       public void onGroupCollapsed(int groupPosition) {       }       @Override       public long getCombinedChildId(long groupId, long childId) {         return 0;       }       @Override       public long getCombinedGroupId(long groupId) {         return 0;       }     };     ExpandableListView expandableListView = (ExpandableListView) findViewById(R.id.list);     expandableListView.setOnChildClickListener(new ExpandableListView.OnChildClickListener() {       @Override       public boolean onChildClick(ExpandableListView parent, View v, int groupPosition, int childPosition, long id) {         Toast.makeText(MainActivity.this,"你是一个：" +             adapter.getChild(groupPosition,childPosition),Toast.LENGTH_SHORT).show();         return true;       }     });     expandableListView.setAdapter(adapter);   } }