Android Open Source - book Expandable List Adapter

• Back to Development/book  ↑

From Project

Back to project page book.

License

The source code is released under:

MIT License

Java Source Code

package book;
/*from w ww.ja  v a 2s  .c  om*/
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

import com.example.book.R;

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

/*
 * 
 *       adapter for expandable listview, used in bookview fragment
 *       when translations appear beneath the wordsasfdkfsdfdfkd
 */

public class ExpandableListAdapter extends BaseExpandableListAdapter {
   
    private Context _context;
    private List<String> _listDataHeader; // header titles
    // child data in format of header title, child title
    private HashMap<String, List<String>> _listDataChild;
 
    public ExpandableListAdapter(Context context, HashMap<String, List<String>> listChildData) {
        this._context = context;
        //this._listDataHeader = listDataHeader;
        this._listDataHeader = new ArrayList<String>();
        for (String key : listChildData.keySet()){
          this._listDataHeader.add(key);
        }
        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._context
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            convertView = infalInflater.inflate(R.layout.wordlisttranslation, null);
        }
 
        TextView txtListChild = (TextView) convertView
                .findViewById(R.id.translation);
 
        txtListChild.setText(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) {
        String headerTitle = (String) getGroup(groupPosition);
        if (convertView == null) {
            LayoutInflater infalInflater = (LayoutInflater) this._context
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            convertView = infalInflater.inflate(R.layout.wordlistword, null);
        }
 
        TextView lblListHeader = (TextView) convertView
                .findViewById(R.id.word);
        lblListHeader.setTypeface(null, Typeface.BOLD);
        lblListHeader.setText(headerTitle);
 
        return convertView;
    }
 
    @Override
    public boolean hasStableIds() {
        return false;
    }
 
    @Override
    public boolean isChildSelectable(int groupPosition, int childPosition) {
        return true;
    }
}

Java Source Code List

• Back to Development/book  ↑