[android-developers] BaseExpandableListAdapter with cursor from db

[Jigal sanders]

Hello Everyone, 

Happy 2013

At the moment I have a simple list view which is feeded by a 
SimpleCursorAdapter. Now I want to expand the list view with a few 
sections. So i altered my query for my cursorAdapter and added some 
groupBy's.

I got a bit further and i was told to use a BaseExpandableListAdapter. So I 
found a few tutorials and created my own adapter based on 
the BaseExpandableListAdapter. i have attached my code.

Now how do i go on to feed this adapter with data from my sqlite db? 

Thanks very much

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package com.sanders.shechita.adapter;

import java.util.ArrayList;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseExpandableListAdapter;
import android.widget.TextView;

import com.sanders.shechita.R;
import com.sanders.shechita.classes.ExpandListChild;
import com.sanders.shechita.classes.ExpandListGroup;

public class SlachtListAdapter extends BaseExpandableListAdapter {
	
	private Context context;
	private ArrayList<ExpandListGroup> groups;
	
	public SlachtListAdapter(Context context, ArrayList<ExpandListGroup> groups){
		this.context = context;
		this.groups = groups;
	}
	
	public void addItem(ExpandListChild item, ExpandListGroup group){
		if(!groups.contains(group)){
			groups.add(group);
		}
		
		int index = groups.indexOf(group);
		ArrayList<ExpandListChild> ch = groups.get(index).getItems();
		ch.add(item);
		groups.get(index).setItems(ch);
				
	}
	
	public Object getChild(int groupPosition, int childPosition){
		ArrayList<ExpandListChild> chList = groups.get(groupPosition).getItems();
		return chList.get(childPosition);
	}
	
	public long getChildId(int groupPosition, int childPosition){
		return childPosition;
	}

	public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View view , ViewGroup parent){
		ExpandListChild child = (ExpandListChild) getChild(groupPosition, childPosition);
		if(view == null){
			LayoutInflater layoutInflater = (LayoutInflater) context.getSystemService(context.LAYOUT_INFLATER_SERVICE);
			view = layoutInflater.inflate(R.layout.expandlist_child_item, null);	
		}
		TextView tv = (TextView) view.findViewById(R.id.tvChild);
		tv.setText(child.getName().toString());
		tv.setTag(child.getTag());
		return view;
	}
	
	public int getChildrenCount(int groupPosition){
		ArrayList<ExpandListChild> chList = groups.get(groupPosition).getItems();
		return chList.size();
	}
	
	public Object getGroup(int groupPosition){
		return groups.get(groupPosition);
	}
	
	public int getGroupCount(){
		return groups.size();
	}
	
	public View getGroupView(int groupPosition, boolean isLastChild, View view, ViewGroup parent){
		ExpandListGroup group = (ExpandListGroup) getGroup(groupPosition);
		if(view == null){
			LayoutInflater layoutInflater = (LayoutInflater) context.getSystemService(context.LAYOUT_INFLATER_SERVICE);
			view = layoutInflater.inflate(R.layout.expandlist_group_item, null);
		}
		
		TextView tv = (TextView) view.findViewById(R.id.tvGroup);
		tv.setText(group.getName());
		return view;
		
	}
	
	public boolean hasStableIds(){
		return true;
	}

	public long getGroupId(int groupPosition) {
		// TODO Auto-generated method stub
		return 0;
	}

	public boolean isChildSelectable(int groupPosition, int childPosition) {
		// TODO Auto-generated method stub
		return false;
	}
	
	
	
	
}