Comment faire pour afficher TextView dans le groupe dans ExpandableListView

Question

Ce que je veux faire est, quand je clique sur l'enfant dans ExpandableListView il va changer le parent (groupView) en fonction d'un enfant sélectionné. En bref, c'est comme un <select><option/></select> en HTML.

C'est le ChildView

public View getChildView(int groupPosition, final int childPosition, 
         boolean isLastChild, View convertView, ViewGroup parent) { 


    final String childText = (String) getChild(groupPosition, childPosition); 

    if (convertView == null) { 
     LayoutInflater inflater= (LayoutInflater) this._context 
       .getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
     convertView = inflater.inflate(R.layout.list_item, null); 
    } 

    convertView.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View view) { 
      Log.i("Onclick CHild: ", childText); 

      //This is where I want to setText the View of its groupView 
     } 
    }); 

    TextView txtListChild = (TextView) convertView 
      .findViewById(R.id.listItem); 

    txtListChild.setText(childText); 
    return convertView; 
} 

C'est le groupView

@Override 
public View getGroupView(int groupPosition, boolean isExpanded, 
         View convertView, ViewGroup parent) { 
    String headerTitle = (String) getGroup(groupPosition); 

    if (convertView == null) { 
     LayoutInflater infalInflater = (LayoutInflater) this._context 
       .getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
     switch(groupPosition){ 
      case 0:{ 
       convertView = infalInflater.inflate(R.layout.type_header, null); 
       break; 
      } 
      case 1:{ 
       convertView = infalInflater.inflate(R.layout.make_header, null); 
       break; 
      } 
      case 2:{ 
       convertView = infalInflater.inflate(R.layout.model_header, null); 
       break; 
      } 
      case 3:{ 
       convertView = infalInflater.inflate(R.layout.engine_header, null); 
       break; 
      } 
      case 4:{ 
       convertView = infalInflater.inflate(R.layout.weight_header, null); 
       break; 
      } 
     } 
    } 


    Holder holder = new Holder(this._context); 
    holder.title = (TextView) convertView.findViewById(R.id.headerTitle); 
    holder.title.setText(headerTitle); 

    return convertView; 
} 

Answer 1

Vous pouvez vérifier le groupe et le nom enfant ou l'identifiant, en fonction du nom que vous pouvez modifier le texte de votre vue parente ou vue enfant.

// Listview on child click listener 
     expListView.setOnChildClickListener(new OnChildClickListener() { 

      @Override 
      public boolean onChildClick(ExpandableListView parent, View v, 
        int groupPosition, int childPosition, long id) { 
       Toast.makeText(
         getApplicationContext(), 
         listDataHeader.get(groupPosition) 
           + " : " 
           + listDataChild.get(
             listDataHeader.get(groupPosition)).get(
             childPosition), Toast.LENGTH_SHORT) 
         .show(); 
       return false; 
      } 
     }); 

Answer 2

publique Voir getGroupView (int groupPosition, IsExpanded booléen, Voir convertView, parent ViewGroup) { chaîne headerTitle = (String) getGroup (groupPosition);

if (convertView == null) { 
    LayoutInflater infalInflater = (LayoutInflater) this._context 
      .getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
    switch(groupPosition){ 
     case 0:{ 
      convertView = infalInflater.inflate(R.layout.type_header, null); 
      break; 
     } 
     case 1:{ 
      convertView = infalInflater.inflate(R.layout.make_header, null); 
      break; 
     } 
     case 2:{ 
      convertView = infalInflater.inflate(R.layout.model_header, null); 
      break; 
     } 
     case 3:{ 
      convertView = infalInflater.inflate(R.layout.engine_header, null); 
      break; 
     } 
     case 4:{ 
      convertView = infalInflater.inflate(R.layout.weight_header, null); 
      break; 
     } 
    } 
} 
Holder holder = new Holder(this._context); 
holder.title = (TextView) convertView.findViewById(R.id.headerTitle); 
holder.title.setText(getGroup(groupPosition)); 
return convertView;} 

Veuillez utiliser ce code.