Android Open Source - kure-music-player Activity Menu Artist

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License

The source code is released under:

GNU General Public License

Java Source Code

package com.kure.musicplayer.activities;
// w w  w .  ja  v a  2 s.  c o m
import java.util.ArrayList;

import android.app.ActionBar;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;

import com.kure.musicplayer.R;
import com.kure.musicplayer.kMP;

/**
 * Shows a menu with all the artists of the songs
 * on SongList, allowing the user to choose one of
 * them and going to a specific artist menu.
 *
 */
public class ActivityMenuArtist extends ActivityMaster
implements OnItemClickListener {

  /**
   * All the possible items the user can select on this menu.
   *
   * Will be initialized with default values on `onCreate`.
   */
  public static ArrayList<String> items;

  /**
   * List that will be populated with all the items.
   *
   * Look for it inside the res/layout xml files.
   */
  ListView listView;

  /**
   * Called when the activity is created for the first time.
   */
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_menu_artists);

    // This enables the "Up" button on the top Action Bar
    // Note that it returns to the parent Activity, specified
    // on `AndroidManifest`
    ActionBar actionBar = getActionBar();
    if (actionBar != null)
      actionBar.setDisplayHomeAsUpEnabled(true);

    // List to be populated with items
    listView = (ListView)findViewById(R.id.activity_menu_artists_list);

    items = kMP.songs.getArtists();

    // Adapter that will convert from Strings to List Items
    final ArrayAdapter<String> adapter = new ArrayAdapter<String>
        (this, android.R.layout.simple_list_item_1, items);

    // Filling teh list with all the items
    listView.setAdapter(adapter);

    listView.setOnItemClickListener(this);
  }

  /**
   * Will react to the user selecting an item.
   */
  @Override
  public void onItemClick(AdapterView<?> parent, View view, int position, long id) {

    // We can only handle the user choice from now on
    // if we've successfully scanned the songs from the
    // device.
    if (! kMP.songs.isInitialized())
      return;

    String selectedArtist = items.get(position);

    // Now we'll decide between going to two screens:
    // - If the artist has only one album, show all his songs already!
    // - If has more than one, show list of albums first.
    ArrayList<String> albumsByArtist = kMP.songs.getAlbumsByArtist(selectedArtist);

    if (albumsByArtist.size() == 1) {

      kMP.musicList = kMP.songs.getSongsByArtist(selectedArtist);

      Intent intent = new Intent(this, ActivityListSongs.class);

      intent.putExtra("title", selectedArtist);

      startActivity(intent);
    }
    else {
      // We'll send the artist name to display his albums
      // as an extra to this new Activity
      Intent intent = new Intent(this, ActivityListAlbums.class);

      intent.putExtra("artist", selectedArtist);

      startActivity(intent);
    }
  }

  /**
   * When destroying the Activity.
   */
  @Override
  protected void onDestroy() {
    super.onDestroy();

    // Need to clear all the items otherwise
    // they'll keep adding up.
    items.clear();
  }
}

Java Source Code List

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