il ne montre que l'un des parents pièce enfant qui est cliqué d'abord sur tout autre élément parent pour expandableListview

Question

Mon code ci-dessous montre que l'un des parents pièce enfant qui est cliqué d'abord sur tout autre élément parent pour expandableListview

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; 
     } 
    } 

ceci est mon activité principale mon code ci-dessous montre que les parents d'un enfant objet qui est cliqué d'abord sur tout autre élément parent pour expandableListview cette activité principale est

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); 
} 

}

activité principale incluse.

Answer 1

Je suppose que dans votre méthode getChildView() vous avez du code écrit dans un si la condition à savoir if(v==null), il suffit d'écrire le code d'initialisation en ce que si et en assignant des données à votre vue, écrivez ce code en dehors de cette condition. Lorsque vous cliquez sur l'en-tête suivant (parent), aucune nouvelle vue ne sera affichée, car cette vue horaire ne sera pas nulle.

Answer 2

Je pense que vous devez passer la taille de l'enfant appropreate pas 1. Un petit changement:

De:

@Override 
    public int getChildrenCount(int groupPosition) { 
     return 1; 
    } 

Pour

@Override 
    public int getChildrenCount(int groupPosition) { 
     return _listDataChild .size(); 
    } 

EDIT

Et quand vous obtenez l'enfant aussi.

De:

@Override 
    public Object getChild(int groupPosition, int childPosititon) { 
     return this._listDataChild.get(groupPosition).get(childPosititon); 
    } 

Pour:

Juste essayer (pas sûr):

@Override 
    public Object getChild(int groupPosition, int childPosititon) { 
     return this._listDataChild.get(childPosititon); 
    }