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1、二级列表，并实现自动关闭packagecom.sun.erjiliebiao;importjava.util.ArrayList;importjava.util.List;importandroid.app.Activity;importandroid.database.DataSetObserver;importandroid.os.Bundle;importandroid.view.View;importandroid.view.ViewGroup;importandroid.widget.Expa
2、ndableListAdapter;importandroid.widget.ExpandableListView;importandroid.widget.ExpandableListView.OnGroupExpandListener;importandroid.widget.LinearLayout;importandroid.widget.TextView;publicclassErjiliebiaoActivityextendsActivity{/**Calledwhentheactivity
3、isfirstcreated.*/ExpandableListAdapteradapter;privateString[]forther=newString[]{"第一组","第二组","第三组"};privateString[][]chrild=newString[][]{{"小狗","小猫","小鱼","小动物"},{"黄河","流水","小桥","大山"},{"城市","山区","森林","大海","ktv","酒店"}};@OverridepublicvoidonCreate(Bundlesav
4、edInstanceState){super.onCreate(savedInstanceState);setContentView(R.layout.main);adapter=newExpandableListAdapter(){@OverridepublicvoidunregisterDataSetObserver(DataSetObserverobserver){//TODOAuto-generatedmethodstub}@OverridepublicvoidregisterDataSetOb
5、server(DataSetObserverobserver){//TODOAuto-generatedmethodstub}@OverridepublicvoidonGroupExpanded(intgroupPosition){//TODOAuto-generatedmethodstubSystem.out.println("被展开-------->"+groupPosition);}@OverridepublicvoidonGroupCollapsed(intgroupPosition){//TO
6、DOAuto-generatedmethodstubSystem.out.println("被关闭---------->"+groupPosition);}@OverridepublicbooleanisEmpty(){//TODOAuto-generatedmethodstubreturntrue;}@OverridepublicbooleanisChildSelectable(intgroupPosition,intchildPosition){//TODOAuto-generatedmethods
7、tubreturntrue;}@OverridepublicbooleanhasStableIds(){//TODOAuto-generatedmethodstubreturntrue;}@OverridepublicViewgetGroupView(intgroupPosition,booleanisExpanded,ViewconvertView,ViewGroupparent){//TODOAuto-generatedmethodstubSystem.out.println(""+groupPos
8、ition+isExpanded);LinearLayoutll=newLinearLayout(ErjiliebiaoActivity.this);ll.setOrientation(0);TextViewtextView=newTextView(ErjiliebiaoActivity.this);textView.setText(getGroup(groupPosition).toString());textView.setTextSi
