Android Open Source - RSSNewsReaderApp Exp Custom List Adapter

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License

The source code is released under:
GNU General Public License
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Java Source Code

package com.romanostrechlis.rssnews.auxiliary;
// w w w .  j a  v a  2s .c o m
import java.util.HashMap;
import java.util.List;

import android.annotation.SuppressLint;
import android.content.Context;
import android.content.res.ColorStateList;
import android.graphics.Color;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseExpandableListAdapter;
import android.widget.CheckedTextView;
import android.widget.ExpandableListView;
import android.widget.ImageView;
import android.widget.TextView;

import com.romanostrechlis.rssnews.R;
import com.romanostrechlis.rssnews.content.RssFeed;

/**
 * Custom BaseExpandableListAdapter for the creation of the List in MainActivity.
 * 
 * @author Romanos Trechlis
 *
 */
public class ExpCustomListAdapter extends BaseExpandableListAdapter {

  private List<String> parentItems;
  private Context context;
  private HashMap<String, List<RssFeed>> childMap;

  public ExpCustomListAdapter(List<String> parents, HashMap<String, List<RssFeed>> childMap, Context context) {
    this.parentItems = parents;
    this.childMap = childMap;
    this.context = context;
  }

  @Override
  public int getGroupCount() {
    return this.parentItems.size();
  }

  @Override
  public int getChildrenCount(int groupPosition) {
    return this.childMap.get(this.parentItems.get(groupPosition)).size();
  }

  @Override
  public Object getGroup(int groupPosition) {
    return this.parentItems.get(groupPosition);
  }

  @Override
  public Object getChild(int groupPosition, int childPosition) {
    return this.childMap.get(this.parentItems.get(groupPosition))
        .get(childPosition);
  }

  @Override
  public long getGroupId(int groupPosition) {
    return groupPosition;
  }

  @Override
  public long getChildId(int groupPosition, int childPosition) {
    return childPosition;
  }

  @Override
  public boolean hasStableIds() {
    return false;
  }

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

    if (convertView == null) {
      LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
      convertView = inflater.inflate(R.layout.layout_parents, parent, false);
    }
    CheckedTextView ctv = (CheckedTextView)convertView.findViewById(R.id.ctv1);
    ctv.setTextColor(Color.parseColor("#f5f5f5"));
    ctv.setText(parentItems.get(groupPosition));
    ctv.setChecked(isExpanded);
    return convertView;
  }

  @SuppressLint("InflateParams")
  @Override
  public View getChildView(int groupPosition, int childPosition,
      boolean isLastChild, View convertView, ViewGroup parent) {
    //child = (List<String>) childItems.get(groupPosition);
    RssFeed feed = (RssFeed)getChild(groupPosition, childPosition);
    final String childText = feed.getName();

    if (convertView == null) {
      LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
      convertView = inflater.inflate(R.layout.layout_row, null);
    }

    TextView tvExpLabel = (TextView) convertView.findViewById(R.id.tvExpLabel);
    tvExpLabel.setTextColor(Color.WHITE);
    ImageView ivExpIcon = (ImageView) convertView.findViewById(R.id.ivExpIcon);
    tvExpLabel.setText(childText);
    if (feed.getNewContent()) {
      // ivExpIcon.setImageResource(android.R.drawable.button_onoff_indicator_on);
      ivExpIcon.setImageResource(R.drawable.ic_new_style);
    } else {
      // ivExpIcon.setImageResource(android.R.drawable.button_onoff_indicator_off);
    }
    
    return convertView;
  }

  @Override
  public boolean isChildSelectable(int groupPosition, int childPosition) {
    return true;
  }

}
Java Source Code List
