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I need to get the name of the items in the Expandablelistview list, and settar header according to his position, but he’s only getting the last one. Below is my code:
Mainactivity
public class MainActivity extends AppCompatActivity {
ExpandableListAdapter listAdapter;
ExpandableListView expListView;
List<String> listDataHeader;
HashMap<String, List<String>> listDataChild;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// get the listview
expListView = findViewById(R.id.lvExp);
// preparing list data
prepareListData();
listAdapter = new ExpandableListAdapter(this, listDataHeader, listDataChild);
// setting list adapter
expListView.setAdapter(listAdapter);
// PEGA A POSIÇÃO DO ITEM DA LISTA
expListView.setOnChildClickListener(new ExpandableListView.OnChildClickListener() {
@Override
public boolean onChildClick(ExpandableListView parent, View v, int groupPosition, int childPosition, long id) {
Log.i("LOG", "Posição: " + childPosition);
parent.collapseGroup(0);
return false;
}
});
// TROCA O ICONE DE EXPANSAO
expListView.setGroupIndicator(getResources().getDrawable(R.drawable.ic_launcher_background));
}
private void prepareListData() {
listDataHeader = new ArrayList<>();
listDataChild = new HashMap<>();
// Adding child data
listDataHeader.add("Lista de itens");
// Adding child data
List<String> itens = new ArrayList<String>();
itens.add("Item 1");
itens.add("Item 2");
itens.add("Item 3");
itens.add("Item 4");
itens.add("Item 5");
listDataChild.put(listDataHeader.get(0), itens); // Header, Child data
}
}
Expandablelistadapter
public class ExpandableListAdapter extends BaseExpandableListAdapter implements IAtualizaNome {
String headerTitle;
private Context ctx;
private List<String> listDataHeader; // header titles
// child data in format of header title, child title
private HashMap<String, List<String>> listDataChild;
String name;
public ExpandableListAdapter(Context ctx, List<String> listDataHeader, HashMap<String, List<String>> listChildData) {
this.ctx = ctx;
this.listDataHeader = listDataHeader;
this.listDataChild = listChildData;
}
@Override
public Object getChild(int groupPosition, int childPosititon) {
return this.listDataChild.get(this.listDataHeader.get(groupPosition)).get(childPosititon);
}
@Override
public long getChildId(int groupPosition, int childPosition) {
return childPosition;
}
@Override
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 infalInflater = (LayoutInflater) this.ctx.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(R.layout.item_lista, null);
}
TextView tvItemLista = convertView.findViewById(R.id.tvw_item_nome);
tvItemLista.setText(childText);
name = childText;
return convertView;
}
@Override
public int getChildrenCount(int groupPosition) {
return this.listDataChild.get(this.listDataHeader.get(groupPosition))
.size();
}
@Override
public Object getGroup(int groupPosition) {
return this.listDataHeader.get(groupPosition);
}
@Override
public int getGroupCount() {
return this.listDataHeader.size();
}
@Override
public long getGroupId(int groupPosition) {
return groupPosition;
}
@Override
public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) {
headerTitle = (String) getGroup(groupPosition);
if (convertView == null) {
LayoutInflater infalInflater = (LayoutInflater) this.ctx.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(R.layout.list_group, null);
}
TextView tvTitleHeader = convertView.findViewById(R.id.tvw_title_header);
tvTitleHeader.setTypeface(null, Typeface.BOLD);
headerTitle = name;
tvTitleHeader.setText((headerTitle == null) ? "Selecione" : headerTitle);
return convertView;
}
public void changeHeader(String text) {
headerTitle = text;
}
@Override
public boolean hasStableIds() {
return false;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return true;
}
@Override
public void updateName(String name) {
this.name = name;
}
}