Android Open Source - FuzzyPlayer Music Tutorial

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License

The source code is released under:

GNU General Public License

Java Source Code

package org.susu.music;
/*  w w  w . j  a v  a  2  s.  c  om*/
import java.io.File;
import java.io.IOException;
import java.io.FilenameFilter;

import java.util.List;
import java.util.ArrayList;

import android.app.Activity;
import android.os.Bundle;
import android.content.Context;
import android.media.MediaPlayer;

import android.widget.Toast;
import android.widget.ArrayAdapter;

import android.util.Log;
import android.widget.ListView;
import android.view.View;
import android.view.Gravity;

import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;

public class MusicTutorial extends Activity
                           implements OnItemClickListener,
                                      OnClickListener
{
  static class Mp3Filter implements FilenameFilter
  {
    public boolean accept(File dir, String name)
    {
      return name.endsWith(".mp3");
    }
  }
  private static final String TAG = "MusicTutorial";
  private static final String MEDIA_PATH = "/sdcard/Music/";
  private List<String> m_songs = new ArrayList<String>();
  private MediaPlayer m_player = new MediaPlayer();
  private int m_currentPos = 0;

  @Override
  public void onCreate(Bundle savedInstanceState)
  {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    ListView lv = (ListView)findViewById(R.id.song_list);
    lv.setOnItemClickListener(this);
    updateSongList();

    findViewById(R.id.play_button).setOnClickListener(this);
    findViewById(R.id.next_button).setOnClickListener(this);

  }

  private void updateSongList()
  {
    File home = new File(MEDIA_PATH);
    File[] files = home.listFiles(new Mp3Filter());
    if (files.length > 0)
    {
      m_songs.clear();
      for(File f : files)
      {
        m_songs.add(f.getName());
        Log.d(TAG, "------- FILE FOUND: " + f.getName());
      }
      // toastMessage( "I've found " + m_songs.size() + " file...");
      ArrayAdapter<String> songList =
        new ArrayAdapter<String>(this,R.layout.song_item,m_songs);
      ListView lv = (ListView)findViewById(R.id.song_list);
      lv.setAdapter(songList);
      songList.notifyDataSetChanged();
    }
    else
    {
      toastMessage( "No MP3 files found!");
    }
  }

  @Override
  public void onItemClick(AdapterView<?> l, View v, int pos, long id)
  {
    m_currentPos = pos;
    playSong( MEDIA_PATH + m_songs.get(pos));
  }

  @Override
  public void onClick(View v)
  {
    try
    {
      switch(v.getId())
      {
        case R.id.play_button:
          playPause();
          break;
        case R.id.next_button:
          nextSong();
          break;
      }
    }
    catch(IllegalStateException e)
    {
      toastMessage("ERROR: player is not paused/playing!");
    }
  }

  private void nextSong()
  {
    m_currentPos = ((1 + m_currentPos) % m_songs.size());
    playSong( MEDIA_PATH + m_songs.get(m_currentPos));
  }

  private void playPause()
  {
    if (m_player.isPlaying())
    {
      m_player.pause();
      ((Button)findViewById(R.id.play_button)).setText("Play");
    }
    else
    {
      m_player.start();
      ((Button)findViewById(R.id.play_button)).setText("Pause");
    }
  }

  private void playSong(String path)
  {
    try
    {
      m_player.reset();
      m_player.setDataSource(path);
      m_player.prepare();
      m_player.start();
      ((Button)findViewById(R.id.play_button)).setText("Pause");
    }
    catch(IOException e)
    {
      Log.v(TAG, e.getMessage());
    }
  }

  private void toastMessage(CharSequence text)
  {
    Context ctx = getApplicationContext();
    int duration = Toast.LENGTH_SHORT;
    Toast toast = Toast.makeText(ctx,text,duration);
    toast.setGravity(Gravity.TOP|Gravity.CENTER, 0, 0);
    toast.show();
  }
}

Java Source Code List

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