我的下面的代码只显示了孩子中的一个父项，该项首先点击expandableListview的所有其他父项
public class AffiliationAdapter extends BaseExpandableListAdapter {
Context context;
LayoutInflater inflater;
private List<String> _listDataHeader; // header titles
// child data in format of header title, child title
private ArrayList<HashMap<String, String>> _listDataChild;
DbFields dbFields = new DbFields();
public AffiliationAdapter(Context activity, List<String> listDataHeader, ArrayList<HashMap<String, String>> listDataChild) {
this.context = activity;
this._listDataHeader = listDataHeader;
this._listDataChild = listDataChild;
}
@Override
public void registerDataSetObserver(DataSetObserver dataSetObserver) {
}
@Override
public void unregisterDataSetObserver(DataSetObserver dataSetObserver) {
}
@Override
public int getGroupCount() {
return this._listDataHeader.size();
}
@Override
public int getChildrenCount(int groupPosition) {
return 1;
}
@Override
public Object getGroup(int groupPosition) {
return this._listDataHeader.get(groupPosition);
}
@Override
public Object getChild(int groupPosition, int childPosititon) {
return this._listDataChild.get(groupPosition).get(childPosititon);
}
@Override
public long getGroupId(int i) {
return i;
}
@Override
public long getChildId(int groupPosition, int childPosition) {
return childPosition;
}
@Override
public boolean hasStableIds() {
return false;
}
@Override
public View getGroupView(int i, boolean b, View view, ViewGroup viewGroup) {
if (view == null) {
LayoutInflater infalInflater = (LayoutInflater) this.context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
view = infalInflater.inflate(R.layout.faq_group_expand, null);
}
TextView getFaqAnswer = (TextView) view.findViewById(R.id.answer);
getFaqAnswer.setTypeface(null, Typeface.BOLD);
getFaqAnswer.setText((_listDataHeader.get(i)));
return view;
}
@Override
public int getChildType(int groupPosition, int childPosition)
{
int result = 0;
if (groupPosition == getGroupCount()-1)//logical fail ?
{
result = 1;
}
return result;
}
@Override
public View getChildView(final int i, int i2, boolean b, View v, ViewGroup viewGroup) {
if (v==null) {
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = inflater.inflate(R.layout.child_affiliation, null);
int itemType = getChildType(i, i2);
LinearLayout layout_about = (LinearLayout) v.findViewById(R.id.layout_about);
LinearLayout layout_vc = (LinearLayout) v.findViewById(R.id.layout_vc);
LinearLayout layout_registrar = (LinearLayout) v.findViewById(R.id.layout_registrar);
LinearLayout layout_examination_controller = (LinearLayout) v.findViewById(R.id.layout_examination_controller);
LinearLayout layout_link = (LinearLayout) v.findViewById(R.id.layout_link);
TextView about_detail = (TextView) v.findViewById(R.id.about_detail);
TextView vc_name = (TextView) v.findViewById(R.id.vc_name);
TextView vc_Contact = (TextView) v.findViewById(R.id.vc_Contact);
TextView vc_email = (TextView) v.findViewById(R.id.vc_email);
TextView registrar_name = (TextView) v.findViewById(R.id.registrar_name);
TextView registarar_Contact = (TextView) v.findViewById(R.id.registarar_Contact);
TextView registrar_email = (TextView) v.findViewById(R.id.registrar_email);
TextView controller_name = (TextView) v.findViewById(R.id.controller_name);
TextView controller_Contact = (TextView) v.findViewById(R.id.controller_Contact);
TextView controller_email = (TextView) v.findViewById(R.id.controller_email);
TextView link = (TextView) v.findViewById(R.id.link);
about_detail.setText(_listDataChild.get(i2).get(dbFields.AFFILIATION_DESCRIPTION));
vc_name.setText(_listDataChild.get(i2).get(dbFields.VC_NAME));
vc_Contact.setText(_listDataChild.get(i2).get(dbFields.VC_PHONE));
vc_email.setText(_listDataChild.get(i2).get(dbFields.VC_EMAIL));
registrar_name.setText(_listDataChild.get(i2).get(dbFields.REGISTRAR_NAME));
registarar_Contact.setText(_listDataChild.get(i2).get(dbFields.REGISTRAR_PHONE));
registrar_email.setText(_listDataChild.get(i2).get(dbFields.REGISTRAR_EMAIL));
controller_name.setText(_listDataChild.get(i2).get(dbFields.EXAM_CONTROLLER_NAME));
controller_Contact.setText(_listDataChild.get(i2).get(dbFields.EXAM_CONTROLLER_PHONE));
controller_email.setText(_listDataChild.get(i2).get(dbFields.EXAM_CONTROLLER_EMAIL));
link.setText("Notice Link :" +_listDataChild.get(i2).get(dbFields.AFFILIATION_NOTICE_LINK)+
"\n Result Link : "+_listDataChild.get(i2).get(dbFields.AFFILIATION_RESULT_LINK)+
" \n Schedule Link :"+_listDataChild.get(i2).get(dbFields.AFFILIATION_SCHEDULE_LINK));
int grup_pos = (int) getGroupId(i);
switch (grup_pos) {
case 0:
layout_link.setVisibility(View.GONE);
layout_examination_controller.setVisibility(View.GONE);
layout_registrar.setVisibility(View.GONE);
layout_vc.setVisibility(View.GONE);
layout_about.setVisibility(View.VISIBLE);
// v = inflater.inflate(R.layout.dialog_contact, null);
Toast.makeText(context.getApplicationContext(), "position is" + grup_pos, Toast.LENGTH_SHORT).show();
break;
case 1:
layout_link.setVisibility(View.GONE);
layout_examination_controller.setVisibility(View.GONE);
layout_registrar.setVisibility(View.GONE);
layout_vc.setVisibility(View.VISIBLE);
layout_about.setVisibility(View.GONE);
// v = inflater.inflate(R.layout.item_faq_answer, null);
Toast.makeText(context.getApplicationContext(), "position is" + grup_pos, Toast.LENGTH_SHORT).show();
break;
case 2:
layout_link.setVisibility(View.GONE);
layout_examination_controller.setVisibility(View.GONE);
layout_registrar.setVisibility(View.VISIBLE);
layout_vc.setVisibility(View.GONE);
layout_about.setVisibility(View.GONE);
// v = inflater.inflate(R.layout.dialog_contact, null);
Toast.makeText(context.getApplicationContext(), "position is" + grup_pos, Toast.LENGTH_SHORT).show();
break;
// case 3:
// layout_link.setVisibility(View.GONE);
// layout_examination_controller.setVisibility(View.GONE);
// layout_registrar.setVisibility(View.GONE);
// layout_vc.setVisibility(View.GONE);
// layout_about.setVisibility(View.GONE);
// // v = inflater.inflate(R.layout.events_items, null);
// Toast.makeText(context.getApplicationContext(), "position is" + grup_pos, Toast.LENGTH_SHORT).show();
// break;
case 3:
layout_link.setVisibility(View.GONE);
layout_examination_controller.setVisibility(View.VISIBLE);
layout_registrar.setVisibility(View.GONE);
layout_vc.setVisibility(View.GONE);
layout_about.setVisibility(View.GONE);
// v = inflater.inflate(R.layout.dialog_program, null);
Toast.makeText(context.getApplicationContext(), "position is" + grup_pos, Toast.LENGTH_SHORT).show();
break;
case 4:
layout_link.setVisibility(View.VISIBLE);
layout_examination_controller.setVisibility(View.GONE);
layout_registrar.setVisibility(View.GONE);
layout_vc.setVisibility(View.GONE);
layout_about.setVisibility(View.GONE);
// v = inflater.inflate(R.layout.dialog_program, null);
Toast.makeText(context.getApplicationContext(), "position is" + grup_pos, Toast.LENGTH_SHORT).show();
break;
}
}
// v.invalidate();
return v;
}
@Override
public boolean isChildSelectable(int i, int i2) {
return true;
}
@Override
public boolean areAllItemsEnabled() {
return false;
}
@Override
public boolean isEmpty() {
return false;
}
@Override
public void onGroupExpanded(int i) {
super.onGroupExpanded(i);
}
@Override
public void onGroupCollapsed(int i) {
super.onGroupCollapsed(i);
}
@Override
public long getCombinedChildId(long l, long l2) {
return 0;
}
@Override
public long getCombinedGroupId(long l) {
return 0;
}
}
这是我的主要活动
我的下面的代码只显示了孩子中的一个父项，首先点击expandableListview的所有其他父项，这是主要活动
public class AffiliationActivity extends AppCompatActivity {
ExpandableListView expandableListView;
int previousItem = -1;
//variables to holds course entities
// Getting data from
LayoutInflater layoutInflater;
DbHelper dbHelper;
DbFields dbFields;
private ArrayList<HashMap<String, String>> affiliationChildList;
List<String> faqListHeader;
ScrollView scrollView;
LinearLayout mainLayout,header;
CC_Application application;
Intent intent;
String collegeId;
TextView estdDate,setting,location,type,totAffiliation,totStudent,universityName,fax,phone,email,staff_num;
private ArrayList<String> parentItems = new ArrayList<String>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_affiliation);
//initialise all fields
expandableListView = (ExpandableListView) findViewById(R.id.expandListViewFaq);
layoutInflater = getLayoutInflater();
dbFields = new DbFields();
dbHelper = new DbHelper(this);
scrollView = (ScrollView) findViewById(R.id.scroll);
mainLayout = (LinearLayout) findViewById(R.id.mainLayout);
header = (LinearLayout) findViewById(R.id.header);
faqListHeader = new ArrayList<>();
application= CC_Application.getInstance();
estdDate = (TextView) findViewById(R.id.estd_date);
setting = (TextView) findViewById(R.id.setting);
location = (TextView) findViewById(R.id.location);
type = (TextView) findViewById(R.id.type);
totAffiliation = (TextView) findViewById(R.id.total_affiliation);
totStudent = (TextView) findViewById(R.id.totStudent);
universityName = (TextView) findViewById(R.id.titleC);
fax = (TextView) findViewById(R.id.fax);
phone = (TextView) findViewById(R.id.phone);
email = (TextView) findViewById(R.id.email);
staff_num = (TextView) findViewById(R.id.staff_num);
intent = getIntent();
if(intent!=null) {
collegeId = intent.getStringExtra("getCollegeId").toString();
}
//set parent name for the child
parentItems.add("About Us");
parentItems.add("VC");
parentItems.add("Registrar");
parentItems.add("Examination Controller");
parentItems.add("Links");
//set actionbar customized logo
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setHomeAsUpIndicator(getResources().getDrawable(R.drawable.college_connect_logo));
affiliationChildList = application.getAllAffiliationList(collegeId);
//hold data in expandable listview through adapter
AffiliationAdapter adapter = new AffiliationAdapter(this, parentItems, affiliationChildList);
expandableListView.setAdapter(adapter);
estdDate.setText(affiliationChildList.get(0).get(dbFields.AFFILIATION_FOUNDATION_YEAR));
setting.setText(affiliationChildList.get(0).get(dbFields.AFFILIATION_SETTING));
universityName.setText(affiliationChildList.get(0).get(dbFields.AFFILIATION_NAME));
type.setText(affiliationChildList.get(0).get(dbFields.AFFILIATION_TYPE));
totAffiliation.setText(affiliationChildList.get(0).get(dbFields.AFFILIATION_AFFILIATED_COLLEGE_NUMBER));
totStudent.setText(affiliationChildList.get(0).get(dbFields.AFFILIATION_ENROLLED_STUDENTS));
location.setText(affiliationChildList.get(0).get(dbFields.AFFILIATION_ADDRESS));
fax.setText(affiliationChildList.get(0).get(dbFields.AFFILIATION_FAX));
phone.setText(affiliationChildList.get(0).get(dbFields.AFFILIATION_PHONE));
email.setText(affiliationChildList.get(0).get(dbFields.AFFILIATION_EMAIL));
staff_num.setText(affiliationChildList.get(0).get(dbFields.AFFILIATION_ACADEMIC_STAFF_NUMBER));
expandableListView.setOnGroupExpandListener(new ExpandableListView.OnGroupExpandListener() {
@Override
public void onGroupExpand(int groupPosition) {
if (groupPosition != previousItem){
expandableListView.collapseGroup(previousItem);
previousItem = groupPosition;
mainLayout.setVisibility(View.GONE);
}
else{
expandableListView.collapseGroup(groupPosition);
previousItem = -1;
mainLayout.setVisibility(View.VISIBLE);
}
}
});
// Listview Group collasped listener
expandableListView.setOnGroupCollapseListener(new ExpandableListView.OnGroupCollapseListener() {
@Override
public void onGroupCollapse(int groupPosition) {
mainLayout.setVisibility(View.VISIBLE);
Toast.makeText(getApplicationContext(),"Group Collapsed",Toast.LENGTH_SHORT).show();
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_affiliation, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
包括主要活动。
答案 0 :(得分：0)
我认为你必须通过适当的孩子大小而不是1.一个小小的改变：
来自：
@Override
public int getChildrenCount(int groupPosition) {
return 1;
}
要
@Override
public int getChildrenCount(int groupPosition) {
return _listDataChild .size();
}
修改
当你还带着孩子的时候。
自：
@Override
public Object getChild(int groupPosition, int childPosititon) {
return this._listDataChild.get(groupPosition).get(childPosititon);
}
要：
试试（不确定）：
@Override
public Object getChild(int groupPosition, int childPosititon) {
return this._listDataChild.get(childPosititon);
}
答案 1 :(得分：0)
我想在你的getChildView()方法中你已经在一个条件中编写代码，例如if(v==null)，只需编写初始化代码，如果将数据分配给视图，则将该代码写入if条件之外。
当您点击下一个标题（父级）时，没有新视图会膨胀，因为此时间视图不会为空。