Android Open Source - task4java Expandable List Adapter

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The source code is released under:

Apache License

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Java Source Code

/*
 *  Copyright (c) 2014 Andree Hagelstein, Maik Schulze, Deutsche Telekom AG. All Rights Reserved.
 *  /*from  ww w  .ja v  a2  s  .co m*/
 *  Filename: ExpandableListAdapter.java
 */

package com.task4java.android.examples.activity;

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;

import com.task4java.android.examples.R;
import com.task4java.data.frontend.model.MainMenuItem;
import com.task4java.data.frontend.model.MainMenuItemGroup;
import com.task4java.data.frontend.model.MainMenuItemGroupList;

public class ExpandableListAdapter extends BaseExpandableListAdapter {

  private Context _context;
  private MainMenuItemGroupList _listItems;

  public ExpandableListAdapter(Context context, MainMenuItemGroupList itemList) {

    this._context = context;
    this._listItems = itemList;
  }

  @Override
  public MainMenuItem getChild(int groupPosition, int childPosititon) {

    return this._listItems.get(groupPosition).items.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 = ((MainMenuItem) getChild(groupPosition, childPosition)).title;

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

    TextView txtListChild = (TextView) convertView.findViewById(R.id.lblListItem);
    txtListChild.setText(childText);

    return convertView;
  }

  @Override
  public int getChildrenCount(int groupPosition) {

    return this._listItems.get(groupPosition).items.size();
  }

  @Override
  public MainMenuItemGroup getGroup(int groupPosition) {

    return this._listItems.get(groupPosition);
  }

  @Override
  public int getGroupCount() {

    return this._listItems.size();
  }

  @Override
  public long getGroupId(int groupPosition) {

    return groupPosition;
  }

  @Override
  public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) {

    String headerTitle = ((MainMenuItemGroup) getGroup(groupPosition)).groupName;

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

    TextView lblListHeader = (TextView) convertView.findViewById(R.id.lblListHeader);
    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;
  }
}

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