FileDocCategorySizeDatePackage
TrackBrowserActivity.javaAPI DocAndroid 1.5 API59018Wed May 06 22:42:46 BST 2009com.android.music

TrackBrowserActivity

public class TrackBrowserActivity extends android.app.ListActivity implements View.OnCreateContextMenuListener, android.content.ServiceConnection, MusicUtils.Defs

Fields Summary
private final int
Q_SELECTED
private final int
Q_ALL
private final int
SAVE_AS_PLAYLIST
private final int
PLAY_ALL
private final int
CLEAR_PLAYLIST
private final int
REMOVE
private final int
SEARCH
private static final String
LOGTAG
private String[]
mCursorCols
private String[]
mPlaylistMemberCols
private boolean
mDeletedOneRow
private boolean
mEditMode
private String
mCurrentTrackName
private String
mCurrentAlbumName
private String
mCurrentArtistNameForAlbum
private android.widget.ListView
mTrackList
private android.database.Cursor
mTrackCursor
private TrackListAdapter
mAdapter
private boolean
mAdapterSent
private String
mAlbumId
private String
mArtistId
private String
mPlaylist
private String
mGenre
private String
mSortOrder
private int
mSelectedPosition
private long
mSelectedId
private android.content.BroadcastReceiver
mScanListener
private android.os.Handler
mReScanHandler
private TouchInterceptor.DragListener
mDragListener
private TouchInterceptor.DropListener
mDropListener
private TouchInterceptor.RemoveListener
mRemoveListener
private android.content.BroadcastReceiver
mTrackListListener
private android.content.BroadcastReceiver
mNowPlayingListener
Constructors Summary
public TrackBrowserActivity()
Methods Summary
public booleandispatchKeyEvent(android.view.KeyEvent event)

        if (mPlaylist != null && event.getMetaState() != 0 &&
                event.getAction() == KeyEvent.ACTION_DOWN) {
            switch (event.getKeyCode()) {
                case KeyEvent.KEYCODE_DPAD_UP:
                    moveItem(true);
                    return true;
                case KeyEvent.KEYCODE_DPAD_DOWN:
                    moveItem(false);
                    return true;
                case KeyEvent.KEYCODE_DEL:
                    removeItem();
                    return true;
            }
        }

        return super.dispatchKeyEvent(event);
voiddoSearch()

        CharSequence title = null;
        String query = null;
        
        Intent i = new Intent();
        i.setAction(MediaStore.INTENT_ACTION_MEDIA_SEARCH);
        
        title = mCurrentAlbumName;
        query = mCurrentArtistNameForAlbum + " " + mCurrentAlbumName;
        i.putExtra(MediaStore.EXTRA_MEDIA_ARTIST, mCurrentArtistNameForAlbum);
        i.putExtra(MediaStore.EXTRA_MEDIA_ALBUM, mCurrentAlbumName);
        i.putExtra(MediaStore.EXTRA_MEDIA_FOCUS, "audio/*");
        title = getString(R.string.mediasearch, title);
        i.putExtra(SearchManager.QUERY, query);

        startActivity(Intent.createChooser(i, title));
private android.database.CursorgetTrackCursor(android.content.AsyncQueryHandler async, java.lang.String filter)

        Cursor ret = null;
        mSortOrder = MediaStore.Audio.Media.TITLE_KEY;
        StringBuilder where = new StringBuilder();
        where.append(MediaStore.Audio.Media.TITLE + " != ''");
        
        // Add in the filtering constraints
        String [] keywords = null;
        if (filter != null) {
            String [] searchWords = filter.split(" ");
            keywords = new String[searchWords.length];
            Collator col = Collator.getInstance();
            col.setStrength(Collator.PRIMARY);
            for (int i = 0; i < searchWords.length; i++) {
                keywords[i] = '%" + MediaStore.Audio.keyFor(searchWords[i]) + '%";
            }
            for (int i = 0; i < searchWords.length; i++) {
                where.append(" AND ");
                where.append(MediaStore.Audio.Media.ARTIST_KEY + "||");
                where.append(MediaStore.Audio.Media.ALBUM_KEY + "||");
                where.append(MediaStore.Audio.Media.TITLE_KEY + " LIKE ?");
            }
        }
        
        if (mGenre != null) {
            mSortOrder = MediaStore.Audio.Genres.Members.DEFAULT_SORT_ORDER;
            if (async != null) {
                async.startQuery(0, null,
                        MediaStore.Audio.Genres.Members.getContentUri("external",
                        Integer.valueOf(mGenre)),
                        mCursorCols, where.toString(), keywords, mSortOrder);
                ret = null;
            } else {
                ret = MusicUtils.query(this,
                        MediaStore.Audio.Genres.Members.getContentUri("external", Integer.valueOf(mGenre)),
                        mCursorCols, where.toString(), keywords, mSortOrder);
            }
        } else if (mPlaylist != null) {
            if (mPlaylist.equals("nowplaying")) {
                if (MusicUtils.sService != null) {
                    ret = new NowPlayingCursor(MusicUtils.sService, mCursorCols);
                    if (ret.getCount() == 0) {
                        finish();
                    }
                } else {
                    // Nothing is playing.
                }
            } else if (mPlaylist.equals("podcasts")) {
                where.append(" AND " + MediaStore.Audio.Media.IS_PODCAST + "=1");
                if (async != null) {
                    async.startQuery(0, null,
                            MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, mCursorCols,
                            where.toString(), keywords, MediaStore.Audio.Media.DEFAULT_SORT_ORDER);
                    ret = null;
                 } else {
                    ret = MusicUtils.query(this,
                            MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, mCursorCols,
                            where.toString(), keywords, MediaStore.Audio.Media.DEFAULT_SORT_ORDER);
                }
            } else if (mPlaylist.equals("recentlyadded")) {
                // do a query for all songs added in the last X weeks
                int X = MusicUtils.getIntPref(this, "numweeks", 2) * (3600 * 24 * 7);
                where.append(" AND " + MediaStore.MediaColumns.DATE_ADDED + ">");
                where.append(System.currentTimeMillis() / 1000 - X);
                if (async != null) {
                    async.startQuery(0, null,
                            MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, mCursorCols,
                            where.toString(), keywords, MediaStore.Audio.Media.DEFAULT_SORT_ORDER);
                    ret = null;
                 } else {
                    ret = MusicUtils.query(this,
                            MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, mCursorCols,
                            where.toString(), keywords, MediaStore.Audio.Media.DEFAULT_SORT_ORDER);
                }
            } else {
                mSortOrder = MediaStore.Audio.Playlists.Members.DEFAULT_SORT_ORDER;
                if (async != null) {
                    async.startQuery(0, null,
                            MediaStore.Audio.Playlists.Members.getContentUri("external", Long.valueOf(mPlaylist)),
                            mPlaylistMemberCols, where.toString(), keywords, mSortOrder);
                    ret = null;
                } else {
                    ret = MusicUtils.query(this,
                            MediaStore.Audio.Playlists.Members.getContentUri("external", Long.valueOf(mPlaylist)),
                            mPlaylistMemberCols, where.toString(), keywords, mSortOrder);
                }
            }
        } else {
            if (mAlbumId != null) {
                where.append(" AND " + MediaStore.Audio.Media.ALBUM_ID + "=" + mAlbumId);
                mSortOrder = MediaStore.Audio.Media.TRACK + ", " + mSortOrder;
            }
            if (mArtistId != null) {
                where.append(" AND " + MediaStore.Audio.Media.ARTIST_ID + "=" + mArtistId);
            }
            where.append(" AND " + MediaStore.Audio.Media.IS_MUSIC + "=1");
            if (async != null) {
                async.startQuery(0, null,
                        MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
                        mCursorCols, where.toString() , keywords, mSortOrder);
                ret = null;
            } else {
                ret = MusicUtils.query(this, MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
                        mCursorCols, where.toString() , keywords, mSortOrder);
            }
        }
        
        // This special case is for the "nowplaying" cursor, which cannot be handled
        // asynchronously using AsyncQueryHandler, so we do some extra initialization here.
        if (ret != null && async != null) {
            init(ret);
            setTitle();
        }
        return ret;
public voidinit(android.database.Cursor newCursor)


        mAdapter.changeCursor(newCursor); // also sets mTrackCursor
        
        if (mTrackCursor == null) {
            MusicUtils.displayDatabaseError(this);
            closeContextMenu();
            mReScanHandler.sendEmptyMessageDelayed(0, 1000);
            return;
        }
        
        MusicUtils.hideDatabaseError(this);
        setTitle();

        // When showing the queue, position the selection on the currently playing track
        // Otherwise, position the selection on the first matching artist, if any
        IntentFilter f = new IntentFilter();
        f.addAction(MediaPlaybackService.META_CHANGED);
        f.addAction(MediaPlaybackService.QUEUE_CHANGED);
        if ("nowplaying".equals(mPlaylist)) {
            try {
                int cur = MusicUtils.sService.getQueuePosition();
                setSelection(cur);
                registerReceiver(mNowPlayingListener, new IntentFilter(f));
                mNowPlayingListener.onReceive(this, new Intent(MediaPlaybackService.META_CHANGED));
            } catch (RemoteException ex) {
            }
        } else {
            String key = getIntent().getStringExtra("artist");
            if (key != null) {
                int keyidx = mTrackCursor.getColumnIndexOrThrow(MediaStore.Audio.Media.ARTIST_ID);
                mTrackCursor.moveToFirst();
                while (! mTrackCursor.isAfterLast()) {
                    String artist = mTrackCursor.getString(keyidx);
                    if (artist.equals(key)) {
                        setSelection(mTrackCursor.getPosition());
                        break;
                    }
                    mTrackCursor.moveToNext();
                }
            }
            registerReceiver(mTrackListListener, new IntentFilter(f));
            mTrackListListener.onReceive(this, new Intent(MediaPlaybackService.META_CHANGED));
        }
private voidmoveItem(boolean up)

        int curcount = mTrackCursor.getCount(); 
        int curpos = mTrackList.getSelectedItemPosition();
        if ( (up && curpos < 1) || (!up  && curpos >= curcount - 1)) {
            return;
        }

        if (mTrackCursor instanceof NowPlayingCursor) {
            NowPlayingCursor c = (NowPlayingCursor) mTrackCursor;
            c.moveItem(curpos, up ? curpos - 1 : curpos + 1);
            ((TrackListAdapter)getListAdapter()).notifyDataSetChanged();
            getListView().invalidateViews();
            mDeletedOneRow = true;
            if (up) {
                mTrackList.setSelection(curpos - 1);
            } else {
                mTrackList.setSelection(curpos + 1);
            }
        } else {
            int colidx = mTrackCursor.getColumnIndexOrThrow(
                    MediaStore.Audio.Playlists.Members.PLAY_ORDER);
            mTrackCursor.moveToPosition(curpos);
            int currentplayidx = mTrackCursor.getInt(colidx);
            Uri baseUri = MediaStore.Audio.Playlists.Members.getContentUri("external",
                    Long.valueOf(mPlaylist));
            ContentValues values = new ContentValues();
            String where = MediaStore.Audio.Playlists.Members._ID + "=?";
            String [] wherearg = new String[1];
            ContentResolver res = getContentResolver();
            if (up) {
                values.put(MediaStore.Audio.Playlists.Members.PLAY_ORDER, currentplayidx - 1);
                wherearg[0] = mTrackCursor.getString(0);
                res.update(baseUri, values, where, wherearg);
                mTrackCursor.moveToPrevious();
            } else {
                values.put(MediaStore.Audio.Playlists.Members.PLAY_ORDER, currentplayidx + 1);
                wherearg[0] = mTrackCursor.getString(0);
                res.update(baseUri, values, where, wherearg);
                mTrackCursor.moveToNext();
            }
            values.put(MediaStore.Audio.Playlists.Members.PLAY_ORDER, currentplayidx);
            wherearg[0] = mTrackCursor.getString(0);
            res.update(baseUri, values, where, wherearg);
        }
protected voidonActivityResult(int requestCode, int resultCode, android.content.Intent intent)

        switch (requestCode) {
            case SCAN_DONE:
                if (resultCode == RESULT_CANCELED) {
                    finish();
                } else {
                    getTrackCursor(mAdapter.getQueryHandler(), null);
                }
                break;
                
            case NEW_PLAYLIST:
                if (resultCode == RESULT_OK) {
                    Uri uri = intent.getData();
                    if (uri != null) {
                        int [] list = new int[] { (int) mSelectedId };
                        MusicUtils.addToPlaylist(this, list, Integer.valueOf(uri.getLastPathSegment()));
                    }
                }
                break;

            case SAVE_AS_PLAYLIST:
                if (resultCode == RESULT_OK) {
                    Uri uri = intent.getData();
                    if (uri != null) {
                        int [] list = MusicUtils.getSongListForCursor(mTrackCursor);
                        int plid = Integer.parseInt(uri.getLastPathSegment());
                        MusicUtils.addToPlaylist(this, list, plid);
                    }
                }
                break;
        }
public booleanonContextItemSelected(android.view.MenuItem item)

        switch (item.getItemId()) {
            case PLAY_SELECTION: {
                // play the track
                int position = mSelectedPosition;
                MusicUtils.playAll(this, mTrackCursor, position);
                return true;
            }

            case QUEUE: {
                int [] list = new int[] { (int) mSelectedId };
                MusicUtils.addToCurrentPlaylist(this, list);
                return true;
            }

            case NEW_PLAYLIST: {
                Intent intent = new Intent();
                intent.setClass(this, CreatePlaylist.class);
                startActivityForResult(intent, NEW_PLAYLIST);
                return true;
            }

            case PLAYLIST_SELECTED: {
                int [] list = new int[] { (int) mSelectedId };
                int playlist = item.getIntent().getIntExtra("playlist", 0);
                MusicUtils.addToPlaylist(this, list, playlist);
                return true;
            }

            case USE_AS_RINGTONE:
                // Set the system setting to make this the current ringtone
                MusicUtils.setRingtone(this, mSelectedId);
                return true;

            case DELETE_ITEM: {
                int [] list = new int[1];
                list[0] = (int) mSelectedId;
                Bundle b = new Bundle();
                String f = getString(R.string.delete_song_desc); 
                String desc = String.format(f, mCurrentTrackName);
                b.putString("description", desc);
                b.putIntArray("items", list);
                Intent intent = new Intent();
                intent.setClass(this, DeleteItems.class);
                intent.putExtras(b);
                startActivityForResult(intent, -1);
                return true;
            }
            
            case REMOVE:
                removePlaylistItem(mSelectedPosition);
                return true;
                
            case SEARCH:
                doSearch();
                return true;
        }
        return super.onContextItemSelected(item);
public voidonCreate(android.os.Bundle icicle)
Called when the activity is first created.

        super.onCreate(icicle);
        requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
        setVolumeControlStream(AudioManager.STREAM_MUSIC);
        if (icicle != null) {
            mSelectedId = icicle.getLong("selectedtrack");
            mAlbumId = icicle.getString("album");
            mArtistId = icicle.getString("artist");
            mPlaylist = icicle.getString("playlist");
            mGenre = icicle.getString("genre");
            mEditMode = icicle.getBoolean("editmode", false);
        } else {
            mAlbumId = getIntent().getStringExtra("album");
            // If we have an album, show everything on the album, not just stuff
            // by a particular artist.
            Intent intent = getIntent();
            mArtistId = intent.getStringExtra("artist");
            mPlaylist = intent.getStringExtra("playlist");
            mGenre = intent.getStringExtra("genre");
            mEditMode = intent.getAction().equals(Intent.ACTION_EDIT);
        }

        mCursorCols = new String[] {
                MediaStore.Audio.Media._ID,
                MediaStore.Audio.Media.TITLE,
                MediaStore.Audio.Media.TITLE_KEY,
                MediaStore.Audio.Media.DATA,
                MediaStore.Audio.Media.ALBUM,
                MediaStore.Audio.Media.ARTIST,
                MediaStore.Audio.Media.ARTIST_ID,
                MediaStore.Audio.Media.DURATION
        };
        mPlaylistMemberCols = new String[] {
                MediaStore.Audio.Playlists.Members._ID,
                MediaStore.Audio.Media.TITLE,
                MediaStore.Audio.Media.TITLE_KEY,
                MediaStore.Audio.Media.DATA,
                MediaStore.Audio.Media.ALBUM,
                MediaStore.Audio.Media.ARTIST,
                MediaStore.Audio.Media.ARTIST_ID,
                MediaStore.Audio.Media.DURATION,
                MediaStore.Audio.Playlists.Members.PLAY_ORDER,
                MediaStore.Audio.Playlists.Members.AUDIO_ID
        };

        setContentView(R.layout.media_picker_activity);
        mTrackList = getListView();
        mTrackList.setOnCreateContextMenuListener(this);
        if (mEditMode) {
            //((TouchInterceptor) mTrackList).setDragListener(mDragListener);
            ((TouchInterceptor) mTrackList).setDropListener(mDropListener);
            ((TouchInterceptor) mTrackList).setRemoveListener(mRemoveListener);
            mTrackList.setCacheColorHint(0);
        } else {
            mTrackList.setTextFilterEnabled(true);
        }
        mAdapter = (TrackListAdapter) getLastNonConfigurationInstance();
        
        if (mAdapter != null) {
            mAdapter.setActivity(this);
            setListAdapter(mAdapter);
        }
        MusicUtils.bindToService(this, this);
public voidonCreateContextMenu(android.view.ContextMenu menu, android.view.View view, android.view.ContextMenu.ContextMenuInfo menuInfoIn)


    
            
        menu.add(0, PLAY_SELECTION, 0, R.string.play_selection);
        SubMenu sub = menu.addSubMenu(0, ADD_TO_PLAYLIST, 0, R.string.add_to_playlist);
        MusicUtils.makePlaylistMenu(this, sub);
        if (mEditMode) {
            menu.add(0, REMOVE, 0, R.string.remove_from_playlist);
        }
        menu.add(0, USE_AS_RINGTONE, 0, R.string.ringtone_menu);
        menu.add(0, DELETE_ITEM, 0, R.string.delete_item);
        menu.add(0, SEARCH, 0, R.string.search_title);
        AdapterContextMenuInfo mi = (AdapterContextMenuInfo) menuInfoIn;
        mSelectedPosition =  mi.position;
        mTrackCursor.moveToPosition(mSelectedPosition);
        try {
            int id_idx = mTrackCursor.getColumnIndexOrThrow(
                    MediaStore.Audio.Playlists.Members.AUDIO_ID);
            mSelectedId = mTrackCursor.getInt(id_idx);
        } catch (IllegalArgumentException ex) {
            mSelectedId = mi.id;
        }
        mCurrentAlbumName = mTrackCursor.getString(mTrackCursor.getColumnIndexOrThrow(
                MediaStore.Audio.Media.ALBUM));
        mCurrentArtistNameForAlbum = mTrackCursor.getString(mTrackCursor.getColumnIndexOrThrow(
                MediaStore.Audio.Media.ARTIST));
        mCurrentTrackName = mTrackCursor.getString(mTrackCursor.getColumnIndexOrThrow(
                MediaStore.Audio.Media.TITLE));
        menu.setHeaderTitle(mCurrentTrackName);
public booleanonCreateOptionsMenu(android.view.Menu menu)

        /* This activity is used for a number of different browsing modes, and the menu can
         * be different for each of them:
         * - all tracks, optionally restricted to an album, artist or playlist
         * - the list of currently playing songs
         */
        super.onCreateOptionsMenu(menu);
        if (mPlaylist == null) {
            menu.add(0, PLAY_ALL, 0, R.string.play_all).setIcon(com.android.internal.R.drawable.ic_menu_play_clip);
        }
        menu.add(0, GOTO_START, 0, R.string.goto_start).setIcon(R.drawable.ic_menu_music_library);
        menu.add(0, GOTO_PLAYBACK, 0, R.string.goto_playback).setIcon(R.drawable.ic_menu_playback)
                .setVisible(MusicUtils.isMusicLoaded());
        menu.add(0, SHUFFLE_ALL, 0, R.string.shuffle_all).setIcon(R.drawable.ic_menu_shuffle);
        if (mPlaylist != null) {
            menu.add(0, SAVE_AS_PLAYLIST, 0, R.string.save_as_playlist).setIcon(android.R.drawable.ic_menu_save);
            if (mPlaylist.equals("nowplaying")) {
                menu.add(0, CLEAR_PLAYLIST, 0, R.string.clear_playlist).setIcon(com.android.internal.R.drawable.ic_menu_clear_playlist);
            }
        }
        return true;
public voidonDestroy()

        MusicUtils.unbindFromService(this);
        try {
            if ("nowplaying".equals(mPlaylist)) {
                unregisterReceiverSafe(mNowPlayingListener);
            } else {
                unregisterReceiverSafe(mTrackListListener);
            }
        } catch (IllegalArgumentException ex) {
            // we end up here in case we never registered the listeners
        }
        
        // if we didn't send the adapter off to another activity, we should
        // close the cursor
        if (!mAdapterSent) {
            Cursor c = mAdapter.getCursor();
            if (c != null) {
                c.close();
            }
        }
        unregisterReceiverSafe(mScanListener);
        super.onDestroy();
protected voidonListItemClick(android.widget.ListView l, android.view.View v, int position, long id)

        if (mTrackCursor.getCount() == 0) {
            return;
        }
        MusicUtils.playAll(this, mTrackCursor, position);
public booleanonOptionsItemSelected(android.view.MenuItem item)

        Intent intent;
        Cursor cursor;
        switch (item.getItemId()) {
            case PLAY_ALL: {
                MusicUtils.playAll(this, mTrackCursor);
                return true;
            }

            case GOTO_START:
                intent = new Intent();
                intent.setClass(this, MusicBrowserActivity.class);
                intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                startActivity(intent);
                return true;

            case GOTO_PLAYBACK:
                intent = new Intent("com.android.music.PLAYBACK_VIEWER");
                intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                startActivity(intent);
                return true;
                
            case SHUFFLE_ALL:
                // Should 'shuffle all' shuffle ALL, or only the tracks shown?
                cursor = MusicUtils.query(this, MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
                        new String [] { MediaStore.Audio.Media._ID}, 
                        MediaStore.Audio.Media.IS_MUSIC + "=1", null,
                        MediaStore.Audio.Media.DEFAULT_SORT_ORDER);
                if (cursor != null) {
                    MusicUtils.shuffleAll(this, cursor);
                    cursor.close();
                }
                return true;
                
            case SAVE_AS_PLAYLIST:
                intent = new Intent();
                intent.setClass(this, CreatePlaylist.class);
                startActivityForResult(intent, SAVE_AS_PLAYLIST);
                return true;
                
            case CLEAR_PLAYLIST:
                // We only clear the current playlist
                MusicUtils.clearQueue();
                return true;
        }
        return super.onOptionsItemSelected(item);
public voidonPause()

        mReScanHandler.removeCallbacksAndMessages(null);
        super.onPause();
public voidonResume()

        super.onResume();
        if (mTrackCursor != null) {
            getListView().invalidateViews();
        }
        MusicUtils.setSpinnerState(this);
public java.lang.ObjectonRetainNonConfigurationInstance()

        TrackListAdapter a = mAdapter;
        mAdapterSent = true;
        return a;
public voidonSaveInstanceState(android.os.Bundle outcicle)

    
        
        // need to store the selected item so we don't lose it in case
        // of an orientation switch. Otherwise we could lose it while
        // in the middle of specifying a playlist to add the item to.
        outcicle.putLong("selectedtrack", mSelectedId);
        outcicle.putString("artist", mArtistId);
        outcicle.putString("album", mAlbumId);
        outcicle.putString("playlist", mPlaylist);
        outcicle.putString("genre", mGenre);
        outcicle.putBoolean("editmode", mEditMode);
        super.onSaveInstanceState(outcicle);
public voidonServiceConnected(android.content.ComponentName name, android.os.IBinder service)

        IntentFilter f = new IntentFilter();
        f.addAction(Intent.ACTION_MEDIA_SCANNER_STARTED);
        f.addAction(Intent.ACTION_MEDIA_SCANNER_FINISHED);
        f.addAction(Intent.ACTION_MEDIA_UNMOUNTED);
        f.addDataScheme("file");
        registerReceiver(mScanListener, f);

        if (mAdapter == null) {
            //Log.i("@@@", "starting query");
            mAdapter = new TrackListAdapter(
                    getApplication(), // need to use application context to avoid leaks
                    this,
                    mEditMode ? R.layout.edit_track_list_item : R.layout.track_list_item,
                    null, // cursor
                    new String[] {},
                    new int[] {},
                    "nowplaying".equals(mPlaylist),
                    mPlaylist != null &&
                    !(mPlaylist.equals("podcasts") || mPlaylist.equals("recentlyadded")));
            setListAdapter(mAdapter);
            setTitle(R.string.working_songs);
            getTrackCursor(mAdapter.getQueryHandler(), null);
        } else {
            mTrackCursor = mAdapter.getCursor();
            // If mTrackCursor is null, this can be because it doesn't have
            // a cursor yet (because the initial query that sets its cursor
            // is still in progress), or because the query failed.
            // In order to not flash the error dialog at the user for the
            // first case, simply retry the query when the cursor is null.
            // Worst case, we end up doing the same query twice.
            if (mTrackCursor != null) {
                init(mTrackCursor);
            } else {
                setTitle(R.string.working_songs);
                getTrackCursor(mAdapter.getQueryHandler(), null);
            }
        }
public voidonServiceDisconnected(android.content.ComponentName name)

        // we can't really function without the service, so don't
        finish();
private voidremoveItem()

        int curcount = mTrackCursor.getCount();
        int curpos = mTrackList.getSelectedItemPosition();
        if (curcount == 0 || curpos < 0) {
            return;
        }
        
        if ("nowplaying".equals(mPlaylist)) {
            // remove track from queue

            // Work around bug 902971. To get quick visual feedback
            // of the deletion of the item, hide the selected view.
            try {
                if (curpos != MusicUtils.sService.getQueuePosition()) {
                    mDeletedOneRow = true;
                }
            } catch (RemoteException ex) {
            }
            View v = mTrackList.getSelectedView();
            v.setVisibility(View.GONE);
            mTrackList.invalidateViews();
            ((NowPlayingCursor)mTrackCursor).removeItem(curpos);
            v.setVisibility(View.VISIBLE);
            mTrackList.invalidateViews();
        } else {
            // remove track from playlist
            int colidx = mTrackCursor.getColumnIndexOrThrow(
                    MediaStore.Audio.Playlists.Members._ID);
            mTrackCursor.moveToPosition(curpos);
            long id = mTrackCursor.getLong(colidx);
            Uri uri = MediaStore.Audio.Playlists.Members.getContentUri("external",
                    Long.valueOf(mPlaylist));
            getContentResolver().delete(
                    ContentUris.withAppendedId(uri, id), null, null);
            curcount--;
            if (curcount == 0) {
                finish();
            } else {
                mTrackList.setSelection(curpos < curcount ? curpos : curcount);
            }
        }
private voidremovePlaylistItem(int which)


        
        View v = mTrackList.getChildAt(which - mTrackList.getFirstVisiblePosition());
        try {
            if (MusicUtils.sService != null
                    && which != MusicUtils.sService.getQueuePosition()) {
                mDeletedOneRow = true;
            }
        } catch (RemoteException e) {
            // Service died, so nothing playing.
            mDeletedOneRow = true;
        }
        v.setVisibility(View.GONE);
        mTrackList.invalidateViews();
        if (mTrackCursor instanceof NowPlayingCursor) {
            ((NowPlayingCursor)mTrackCursor).removeItem(which);
        } else {
            int colidx = mTrackCursor.getColumnIndexOrThrow(
                    MediaStore.Audio.Playlists.Members._ID);
            mTrackCursor.moveToPosition(which);
            long id = mTrackCursor.getLong(colidx);
            Uri uri = MediaStore.Audio.Playlists.Members.getContentUri("external",
                    Long.valueOf(mPlaylist));
            getContentResolver().delete(
                    ContentUris.withAppendedId(uri, id), null, null);
        }
        v.setVisibility(View.VISIBLE);
        mTrackList.invalidateViews();
private voidsetTitle()


        CharSequence fancyName = null;
        if (mAlbumId != null) {
            int numresults = mTrackCursor != null ? mTrackCursor.getCount() : 0;
            if (numresults > 0) {
                mTrackCursor.moveToFirst();
                int idx = mTrackCursor.getColumnIndexOrThrow(MediaStore.Audio.Media.ALBUM);
                fancyName = mTrackCursor.getString(idx);
                // For compilation albums show only the album title,
                // but for regular albums show "artist - album".
                // To determine whether something is a compilation
                // album, do a query for the artist + album of the
                // first item, and see if it returns the same number
                // of results as the album query.
                String where = MediaStore.Audio.Media.ALBUM_ID + "='" + mAlbumId +
                        "' AND " + MediaStore.Audio.Media.ARTIST_ID + "=" + 
                        mTrackCursor.getLong(mTrackCursor.getColumnIndexOrThrow(
                                MediaStore.Audio.Media.ARTIST_ID));
                Cursor cursor = MusicUtils.query(this, MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
                    new String[] {MediaStore.Audio.Media.ALBUM}, where, null, null);
                if (cursor != null) {
                    if (cursor.getCount() != numresults) {
                        // compilation album
                        fancyName = mTrackCursor.getString(idx);
                    }    
                    cursor.deactivate();
                }
                if (fancyName == null || fancyName.equals(MediaFile.UNKNOWN_STRING)) {
                    fancyName = getString(R.string.unknown_album_name);
                }
            }
        } else if (mPlaylist != null) {
            if (mPlaylist.equals("nowplaying")) {
                if (MusicUtils.getCurrentShuffleMode() == MediaPlaybackService.SHUFFLE_AUTO) {
                    fancyName = getText(R.string.partyshuffle_title);
                } else {
                    fancyName = getText(R.string.nowplaying_title);
                }
            } else if (mPlaylist.equals("podcasts")){
                fancyName = getText(R.string.podcasts_title);
            } else if (mPlaylist.equals("recentlyadded")){
                fancyName = getText(R.string.recentlyadded_title);
            } else {
                String [] cols = new String [] {
                MediaStore.Audio.Playlists.NAME
                };
                Cursor cursor = MusicUtils.query(this,
                        ContentUris.withAppendedId(Playlists.EXTERNAL_CONTENT_URI, Long.valueOf(mPlaylist)),
                        cols, null, null, null);
                if (cursor != null) {
                    if (cursor.getCount() != 0) {
                        cursor.moveToFirst();
                        fancyName = cursor.getString(0);
                    }
                    cursor.deactivate();
                }
            }
        } else if (mGenre != null) {
            String [] cols = new String [] {
            MediaStore.Audio.Genres.NAME
            };
            Cursor cursor = MusicUtils.query(this,
                    ContentUris.withAppendedId(MediaStore.Audio.Genres.EXTERNAL_CONTENT_URI, Long.valueOf(mGenre)),
                    cols, null, null, null);
            if (cursor != null) {
                if (cursor.getCount() != 0) {
                    cursor.moveToFirst();
                    fancyName = cursor.getString(0);
                }
                cursor.deactivate();
            }
        }

        if (fancyName != null) {
            setTitle(fancyName);
        } else {
            setTitle(R.string.tracks_title);
        }
private voidunregisterReceiverSafe(android.content.BroadcastReceiver receiver)
Unregister a receiver, but eat the exception that is thrown if the receiver was never registered to begin with. This is a little easier than keeping track of whether the receivers have actually been registered by the time onDestroy() is called.

        try {
            unregisterReceiver(receiver);
        } catch (IllegalArgumentException e) {
            // ignore
        }