java mp3播放器

package cn.edu.xmu.software; import java.io.BufferedOutputStream; import java.io.File; import java.io.FileNotFoundException; import java.util.ArrayList; import java.util.Scanner; import android.app.ListActivity; import android.content.ComponentName; import android.content.Context; import android.content.Intent; import android.content.ServiceConnection; import android.database.Cursor; import android.graphics.drawable.Drawable; import android.os.Bundle; import android.os.DeadObjectException; import android.os.Handler; import android.os.IBinder; import android.os.Message; import android.os.RemoteCallbackList; import android.view.Menu; import android.view.View; import android.view.Menu.Item; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.ImageButton; import android.widget.ImageView; import android.widget.ListView; import android.widget.ProgressBar; import android.widget.TextView; import android.widget.Toast; import cn.edu.xmu.software.view.PathToNameAdapter; /** * this is a music player, default encoder is GB2312, can fetch the lyric * from www.Baidu.com, find the proper cover for the album in the same * directory * @author Timlu 030lutian AT gmail DOT com *@version 0.0.1 beta */ public class LastMusic extends ListActivity { private Preferences mPreferences; //使用偏好，状态信息 private ProgressBar status_bar; //进度条 private ImageView mCover; //放置封面区 private ImageButton mPre, mPlay, mStop, mNext, mPlayAllButton,mPlayListButton,mListAddButton,mListRemoveButton, mOpenPlaylistButton,mSavePlaylistButton; //上下两排控制键 private TextView mTimepos = null; //已播放时间显示块 private Button mPlaymodView = null; //切换播放模式键 private boolean isPlaying = false; //播放状态 private boolean isPaused = false; private IMediaPlayerController mpc = null; //后台播放器控制借口 private Preferences.PlayMod mPlayMod; //播放模式 private Preferences.PlayListMod mPlayListMod; //全部播放或选择播放 private int mPosition; //当前播放列表位置 private Handler mHandler = new Handler(); private UpdateStatus mus; //控制进度条更新线程 public static ArrayList<String> mDefaultPlayList = new ArrayList<String>(); public static String mPath; //当前播放歌曲路径 private String mCoverPath; //当前播放歌曲对应的封面路径 private MusicInfoDbAdapter mDbAdapter; //数据库控制接口 private String backgroud_playing_menuitem; //是否后台播放 private static final int SHOW_DETAIL = 0; //查看详情 private static final int OPEN_FILE = 1; //添加文件和目录 private static final int SAVE_PLAYLIST = 3; //存储播放列表 private static final int OPEN_PLAYLIST = 4; //打开播放列表 private static final int DETAIL_ID = Menu.FIRST; private static final int SET_ID = Menu.FIRST + 1; private static final int UPDATE_DATABASE = Menu.FIRST + 2; private static final int SET_BACKGROUD_PLAYING=Menu.FIRST+3; private static final int OPEN_FILE_CHOOSEN = Menu.FIRST+4; /** * create the MediaPlayer service controller. */ private ServiceConnection mConnection = new ServiceConnection(){ public void onServiceConnected(ComponentName className, IBinder service){ mpc = IMediaPlayerController.Stub.asInterface(service); Toast.makeText(LastMusic.this, R.string.detail_name, Toast.LENGTH_SHORT); try { mpc.registerCallback(pn); } catch (DeadObjectException e) { e.printStackTrace(); } } public void onServiceDisconnected(ComponentName className){ mpc = null; try { mpc.unregisterCallback(pn); } catch (Exception e) { e.printStackTrace(); } } }; /** * this is used when the activity of "Detail" is shown, and the * music is end , this call the detail to update its' content */ private IPlayNext pn = new IPlayNext.Stub(){ public void playNext(){ mCompleteHandler.sendEmptyMessage(0); }; }; private Handler mCompleteHandler = new Handler(){ @Override public void handleMessage(Message msg){ playNext(); final int n = mCallbacks.beginBroadcast(); for( int i=0; i< n; i++){ try { mCallbacks.getBroadcastItem(i).playNext(); } catch (DeadObjectException e) { e.printStackTrace(); } mCallbacks.finishBroadcast(); } } }; public static RemoteCallbackList<IPlayNext> mCallbacks = new RemoteCallbackList<IPlayNext>(); /** Called when the activity is first created. */ @Override public void onCreate(Bundle icicle) { super.onCreate(icicle); setContentView(R.layout.playlist); mDbAdapter = new MusicInfoDbAdapter(this); mDbAdapter.open(); bindService( new Intent(LastMusic.this,MusicPlayerService.class), //start service mConnection,Context.BIND_AUTO_CREATE); mPre = (ImageButton)findViewById(R.id.previous_button); mPre.setOnClickListener( new OnClickListener(){ public void onClick(View v){ playPrevious(); } }); mPlay = (ImageButton)findViewById(R.id.play_button); mPlay.setOnClickListener( new OnClickListener(){ public void onClick(View v){ playButtonClick(); } }); mStop = (ImageButton)findViewById(R.id.stop_button); mStop.setOnClickListener( new OnClickListener(){ public void onClick(View v){ stopButtonClick(); } }); mNext = (ImageButton)findViewById(R.id.next_button); mNext.setOnClickListener( new OnClickListener(){ public void onClick(View v){ playNext(); } }); mPlayAllButton = (ImageButton)findViewById(R.id.play_all_button); mPlayAllButton.setOnClickListener( new OnClickListener(){ public void onClick(View v){ playAllClick(); } }); mPlayListButton = (ImageButton)findViewById(R.id.play_list_button); mPlayListButton.setOnClickListener( new OnClickListener(){ public void onClick(View v){ playListClick(); } }); mListAddButton = (ImageButton)findViewById(R.id.list_add_button); mListAddButton.setOnClickListener( new OnClickListener(){ public void onClick(View v){ listAddClick(); } }); mListRemoveButton =(ImageButton)findViewById(R.id.list_remove_button); mListRemoveButton.setOnClickListener( new OnClickListener(){ public void onClick(View v){ listRemoveClick(); } }); mOpenPlaylistButton = (ImageButton)findViewById(R.id.open_playlist_button); mOpenPlaylistButton.setOnClickListener( new OnClickListener(){ public void onClick(View v){ openPlaylistClick(); } }); mSavePlaylistButton = (ImageButton)findViewById(R.id.save_playlist_button); mSavePlaylistButton.setOnClickListener( new OnClickListener(){ public void onClick(View v){ savePlaylistClick(); } }); status_bar = (ProgressBar)findViewById(R.id.status_bar); mPreferences = new Preferences(this); mPlayMod = mPreferences.getPlayMod(); mPosition = mPreferences.getSavedPostion(); mPlayListMod = mPreferences.getPlayListMod(); if(mPlayListMod.equals(Preferences.PlayListMod.PLAYALL)){ mListAddButton.setEnabled(false); addAllFiles(); } else{ mListAddButton.setEnabled(true); addPlaylist(mPreferences.getDefaultPlaylistName()); } fillPlaylist(); mPath = mDefaultPlayList.get(mPosition); mPlaymodView = (Button)findViewById(R.id.playmod); switch(mPlayMod){ case NORMAL: mPlaymodView.setText(R.string.normal_mod); break; case REPEAT_THIS: mPlaymodView.setText(R.string.repeat_this_mod); break; case REPEAT_ALL: mPlaymodView.setText(R.string.repeat_all_mod); break; case RANDOM: mPlaymo