SongList.java

package org.droidklavier.activity;

import android.app.Activity;
import android.app.ListActivity;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.TextView;

import org.droidklavier.Droidklavier;
import org.droidklavier.R;
import org.droidklavier.db.Album;
import org.droidklavier.db.DAO;
import org.droidklavier.db.Song;

import java.util.ArrayList;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class SongList extends ListActivity {

  private Droidklavier mDroidklavier;
  private ArrayList<Song> mSongList;
  private Album mAlbum;
  private ProgressDialog mLoadingDialog;

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.song_list);

    mDroidklavier = (Droidklavier) getApplication();
    String source = getIntent().getStringExtra(Player.SOURCE);
    mAlbum = getIntent().getParcelableExtra(Player.ALBUM);

    if (mAlbum != null) {
      setTitle("Songs from: " + mAlbum.title);
    }

    mLoadingDialog = new ProgressDialog(this);
    mLoadingDialog.setMessage(getString(R.string.loading));
    mLoadingDialog.show();

    new SongListTask().execute(source);

    getListView().setOnItemClickListener(new AdapterView.OnItemClickListener() {
      @Override
      public void onItemClick(AdapterView<?> av, View v, int pos, long id) {
        selectSong((int) id);
      }
    });
  }

  private void selectSong(int id) {
    Song song = mSongList.get(id);
    String source = song.source;
    Intent intent = new Intent();
    intent.putExtra(Player.SOURCE, source);
    intent.putExtra(Player.ALBUM, mAlbum);
    intent.putExtra(Player.SONG, song);
    setResult(Activity.RESULT_OK, intent);
    finish();
  }

  private class SongListAdapter extends ArrayAdapter<Song> {

    private ArrayList<Song> mmSongList;
    private String mmAlbumTitle;

    public SongListAdapter(Context context, int textViewResourceId, ArrayList<Song> songList, String albumTitle) {
      super(context, textViewResourceId, songList);
      mmSongList = songList;
      mmAlbumTitle = albumTitle;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
      View v = convertView;

      if (v == null) {
        LayoutInflater vi = (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        v = vi.inflate(R.layout.song_list_item, null);
      }

      Song song = mmSongList.get(position);

      if (song != null) {
        TextView songTitle = (TextView) v.findViewById(R.id.song_title);
        TextView songAlbum = (TextView) v.findViewById(R.id.song_album);
        TextView albumSource = (TextView) v.findViewById(R.id.album_source);
        String[] strings = match(song.title);

        if (strings != null && strings.length == 3) {
          songTitle.setText(strings[0]);
          songAlbum.setText("Album: " + strings[1]);
          albumSource.setText("Source: " + strings[2]);
        } else {
          songTitle.setText(song.title);
          songAlbum.setText("Album: " + mmAlbumTitle);
          albumSource.setText("Source: " + song.source);
        }
      }
      return v;
    }
  }

  private String[] match(final String songTitle) {
    String[] strings = null;
    Pattern p = Pattern.compile("([^\\[]*)(\\[)(Pianosoft|User)(:)([^\\]]*)(\\])");
    Matcher m = p.matcher(songTitle);

    if (m.find()) {
      strings = songTitle.split("(\\[)(Pianosoft|User)(:)");
      // strings = [song, album, source]
      strings = new String[] { strings[0], strings[1].substring(0, strings[1].length() - 1), m.group(3) };
    }
    return strings;
  }

  private class SongListTask extends AsyncTask<String, Void, ArrayList<Song>> {

    @Override
    protected ArrayList<Song> doInBackground(String... params) {
      ArrayList<Song> songList;
      String source = params[0];

      // Get the songs list from the database
      if (source.equals(DAO.SEARCH_RESULT)) {
        songList = mDroidklavier.getDAO().getSearchResultSongList(mAlbum.albumId);
      } else {
        songList = mDroidklavier.getDAO().getSongList(source, mAlbum.albumId);
      }
      return songList;
    }

    @Override
    protected void onPostExecute(ArrayList<Song> result) {
      super.onPostExecute(result);
      if (result != null) {
        mSongList = result;
        setListAdapter(new SongListAdapter(SongList.this,
              R.layout.song_list_item, mSongList, mAlbum.title));
      }
      if (mLoadingDialog != null) {
        mLoadingDialog.dismiss();
      }
    }
  }
}