I have a arraylist for generic multilevel expandable view.
and a custom adapter with overrided method
but the problem is that it does not read properly. how to override them for n level expandable list view.
another problem is how to access value from arraylist on the basis of child and group.
Java:
package com.example.generic;
import java.util.ArrayList;
public class Category {
ArrayList<Category> childs;
private String name;
/*Constructor 1*/
public Category(String name) {
this.name = name;
childs = new ArrayList<Category>(0);
}
/*Constructor 2*/
public Category(String name, ArrayList<Category> childs) {
this.name = name;
this.childs = childs;
}
public String getName() {
return "";
}
}
and a custom adapter with overrided method
Code:
package com.example.generic;
import java.util.ArrayList;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AbsListView;
import android.widget.BaseExpandableListAdapter;
import android.widget.ExpandableListView;
import android.widget.TextView;
public class CatAdapter extends BaseExpandableListAdapter {
private Context context;
private LayoutInflater inflater;
private ArrayList<Category> categories;
public CatAdapter(Context context, ArrayList<Category> categories) {
this.context = context;
inflater = LayoutInflater.from(context);
this.categories = categories;
}
@Override
public Object getChild(int groupPosition, int childPosition) {
return categories.get(groupPosition).childs.get(childPosition);
}
@Override
public long getChildId(int groupPosition, int childPosition) {
return childPosition;
}
@Override
public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent) {
convertView = inflater.inflate(R.layout.catitem, parent, false);
TextView textView_catName = (TextView)convertView.findViewById(R.id.textView_catName);
Category current = categories.get(groupPosition).childs.get(childPosition);
textView_catName.setText(groupPosition + " , " + childPosition);
String value="";
// textView_catName.setText(value);
if(current.childs.size() > 0 ) {
ExpandableListView elv = new ExpandableListView(context);
elv.setLayoutParams(new AbsListView.LayoutParams(AbsListView.LayoutParams.WRAP_CONTENT, AbsListView.LayoutParams.WRAP_CONTENT));
elv.setAdapter(new CatAdapter(context, current.childs));
((ViewGroup)convertView).addView(elv);
}
return convertView;
}
@Override
public int getChildrenCount(int groupPosition) {
return categories.get(groupPosition).childs.size();
}
@Override
public Object getGroup(int groupPosition) {
return categories.get(groupPosition);
}
@Override
public int getGroupCount() {
return categories.size();
}
@Override
public long getGroupId(int groupPosition) {
return groupPosition;
}
@Override
public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) {
convertView = inflater.inflate(R.layout.catitem, parent, false);
TextView textView_catName = (TextView)convertView.findViewById(R.id.textView_catName);
Category current = categories.get(groupPosition);
//
// categories.get(groupPosition, parent);
// textView_catName.setText(grpValue);
//
textView_catName.setText("" + groupPosition);
return convertView;
}
@Override
public boolean hasStableIds() {
return false;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return false;
}
}
but the problem is that it does not read properly. how to override them for n level expandable list view.
another problem is how to access value from arraylist on the basis of child and group.