Android Open Source - lastfm-android-music-discovery Search Results Adapter

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License

The source code is released under:
Apache License
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Java Source Code

package com.mikeladze.musicdiscovery.search.adapter;
//from  ww  w.  j  av a  2s  . com
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

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.ImageView;
import android.widget.TextView;

import com.mikeladze.musicdiscovery.R;
import com.mikeladze.musicdiscovery.http.LastFMResult;
import com.mikeladze.musicdiscovery.view.gridview.loader.ImageLoader;

/**
 * The SearchResultsAdapter. A custom expandable list adapter for display artist and album
 * searches.
 * 
 * @author Tim Mikeladze
 */
public class SearchResultsAdapter extends BaseExpandableListAdapter {
  
  private Context context;
  private ArrayList<String> headers;
  private HashMap<String, List<LastFMResult>> items;
  private ImageLoader imageLoader;
  
  /**
   * Instantiates a new search results adapter.
   * 
   * @param context the context
   * @param headers the headers
   * @param items the items
   */
  public SearchResultsAdapter(Context context, ArrayList<String> headers, HashMap<String, List<LastFMResult>> items) {
    this.context = context;
    this.headers = headers;
    this.items = items;
    
    imageLoader = new ImageLoader(context);
    
  }
  
  @Override
  /**
   * Get the expandable group view. "Artist" or "Album"
   */
  public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) {
    String headerTitle = getGroup(groupPosition);
    if (convertView == null) {
      LayoutInflater inflator = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
      convertView = inflator.inflate(R.layout.view_search_result_header, null);
    }
    
    TextView lblListHeader = (TextView) convertView.findViewById(R.id.view_search_result_header);
    lblListHeader.setTypeface(null, Typeface.BOLD);
    lblListHeader.setText(headerTitle);
    
    return convertView;
  }
  
  @Override
  /**
   * Get the child view, these are the search results.
   */
  public View getChildView(int groupPosition, final int childPosition, boolean isLastChild, View convertView, ViewGroup parent) {
    
    if (convertView == null) {
      LayoutInflater inflator = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
      convertView = inflator.inflate(R.layout.view_search_result_item, null);
    }
    
    TextView titleView = (TextView) convertView.findViewById(R.id.view_search_result_title);
    ImageView imageView = (ImageView) convertView.findViewById(R.id.view_search_result_image);
    
    if (headers != null && items != null) {
      LastFMResult result = getChild(groupPosition, childPosition);
      titleView.setText(result.getTitle());
      imageLoader.displayImage(result.getImage(), imageView);
    }
    
    return convertView;
  }
  
  @Override
  /**
   * Get data at child position.
   */
  public LastFMResult getChild(int groupPosition, int childPosition) {
    return items.get(headers.get(groupPosition))
          .get(childPosition);
    
  }
  
  @Override
  /**
   * Get the child id.
   */
  public long getChildId(int groupPosition, int childPosition) {
    return childPosition;
  }
  
  @Override
  /**
   * Get the child count.
   */
  public int getChildrenCount(int groupPosition) {
    return items.get(headers.get(groupPosition))
          .size();
  }
  
  @Override
  /**
   * Get title of group at a position.
   */
  public String getGroup(int groupPosition) {
    return headers.get(groupPosition);
  }
  
  @Override
  /**
   * Get number of groups.
   */
  public int getGroupCount() {
    return headers.size();
  }
  
  @Override
  /**
   * Get the id of a group at position.
   */
  public long getGroupId(int groupPosition) {
    return groupPosition;
  }
  
  @Override
  /**
   * Checks if IDs in the adapter are stable.
   */
  public boolean hasStableIds() {
    return false;
  }
  
  @Override
  /**
   * Checks if given child is selectable.
   */
  public boolean isChildSelectable(int groupPosition, int childPosition) {
    return true;
  }
}
Java Source Code List
