src/com/android/music/QueryBrowserActivity.java - platform/packages/apps/Music - Git at Google

 /*
  * Copyright (C) 2007 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */

 package com.android.music;

 import android.app.ListActivity;
 import android.app.SearchManager;
 import android.content.AsyncQueryHandler;
 import android.content.ContentResolver;
 import android.content.Context;
 import android.content.Intent;
 import com.android.internal.database.ArrayListCursor;
 import com.android.music.TrackBrowserActivity.MyQueryHandler;

 import android.database.Cursor;
 import android.database.DatabaseUtils;
 import android.media.AudioManager;
 import android.media.MediaFile;
 import android.net.Uri;
 import android.os.Bundle;
 import android.provider.MediaStore;
 import android.util.Log;
 import android.view.KeyEvent;
 import android.view.MenuItem;
 import android.view.View;
 import android.view.ViewGroup;
 import android.view.Window;
 import android.view.ViewGroup.OnHierarchyChangeListener;
 import android.widget.ImageView;
 import android.widget.ListView;
 import android.widget.SimpleCursorAdapter;
 import android.widget.TextView;

 import java.util.ArrayList;

 public class QueryBrowserActivity extends ListActivity implements MusicUtils.Defs
 {
     private final static int PLAY_NOW = 0;
     private final static int ADD_TO_QUEUE = 1;
     private final static int PLAY_NEXT = 2;
     private final static int PLAY_ARTIST = 3;
     private final static int EXPLORE_ARTIST = 4;
     private final static int PLAY_ALBUM = 5;
     private final static int EXPLORE_ALBUM = 6;
     private final static int REQUERY = 3;
     private MyQueryHandler mQueryHandler;
     private String mFilterString = "";

     public QueryBrowserActivity()
     {
     }

     /** Called when the activity is first created. */
     @Override
     public void onCreate(Bundle icicle)
     {
         super.onCreate(icicle);
         setVolumeControlStream(AudioManager.STREAM_MUSIC);
         MusicUtils.bindToService(this);

         if (icicle == null) {
             Intent intent = getIntent();
             mFilterString = intent.getStringExtra(SearchManager.QUERY);
         }
         if (mFilterString == null) {
             mFilterString = "";
         }

         setContentView(R.layout.query_activity);
         mTrackList = (ListView) findViewById(android.R.id.list);

         mQueryHandler = new MyQueryHandler(getContentResolver());
         mQueryCursor = (Cursor) getLastNonConfigurationInstance();
         if (mQueryCursor == null) {
             //Log.i("@@@", "starting query");
             setTitle(R.string.working_songs);
             getQueryCursor(mQueryHandler);
         } else {
             init(mQueryCursor);
         }
     }

     @Override
     public Object onRetainNonConfigurationInstance() {
         Cursor c = mQueryCursor;
         mQueryCursor = null;
         return c;
     }

     class MyQueryHandler extends AsyncQueryHandler {
         MyQueryHandler(ContentResolver res) {
             super(res);
         }

         @Override
         protected void onQueryComplete(int token, Object cookie, Cursor cursor) {
             Log.i("@@@", "query complete");
             init(cursor);
         }
     }

     @Override
     public void onDestroy() {
         MusicUtils.unbindFromService(this);
         super.onDestroy();
         if (mQueryCursor != null) {
             mQueryCursor.close();
         }
     }

     public void init(Cursor c) {

         mQueryCursor = c;

         ListView lv = getListView();
         lv.setTextFilterEnabled(true);

         if (mQueryCursor == null) {
             MusicUtils.displayDatabaseError(this);
             setListAdapter(null);
             lv.setFocusable(false);
             return;
         }

         // Map Cursor columns to views defined in media_list_item.xml
         QueryListAdapter adapter = new QueryListAdapter(
                 this,
                 R.layout.track_list_item,
                 mQueryCursor,
                 new String[] {},
                 new int[] {});

         setListAdapter(adapter);

         if (mFilterString.length() != 0) {
             // Hack. Can be removed once ListView supports starting filtering with a given string
             lv.setOnHierarchyChangeListener(mHierarchyListener);
         }
     }

     OnHierarchyChangeListener mHierarchyListener = new OnHierarchyChangeListener() {
         public void onChildViewAdded(View parent, View child) {
             ((ListView)parent).setOnHierarchyChangeListener(null);
             // need to do this here to be sure all the views have been initialized
             startFilteringWithString(mFilterString);
         }

         public void onChildViewRemoved(View parent, View child) {
         }
     };

     private KeyEvent eventForChar(char c) {
         int code = -1;
         if (c >= 'a' && c <= 'z') {
             code = KeyEvent.KEYCODE_A + (c - 'a');
         } else if (c >= 'A' && c <= 'Z') {
             code = KeyEvent.KEYCODE_A + (c - 'A');
         } else if (c >= '0' && c <= '9') {
             code = KeyEvent.KEYCODE_0 + (c - '0');
         }
         if (code != -1) {
             return new KeyEvent(KeyEvent.ACTION_DOWN, code);
         }
         return null;
     }
     private void startFilteringWithString(String filterstring) {
         ListView lv = getListView();
         for (int i = 0; i < filterstring.length(); i++) {
             KeyEvent event = eventForChar(filterstring.charAt(i));
             if (event != null) {
                 lv.onKeyDown(event.getKeyCode(), event);
             }
         }
     }

     @Override
     protected void onListItemClick(ListView l, View v, int position, long id)
     {
         // Dialog doesn't allow us to wait for a result, so we need to store
         // the info we need for when the dialog posts its result
         mQueryCursor.moveToPosition(position);
         if (mQueryCursor.isBeforeFirst() || mQueryCursor.isAfterLast()) {
             return;
         }
         String selectedType = mQueryCursor.getString(mQueryCursor.getColumnIndexOrThrow(
                 MediaStore.Audio.Media.MIME_TYPE));

         if ("artist".equals(selectedType)) {
             Intent intent = new Intent(Intent.ACTION_PICK);
             intent.setDataAndType(Uri.EMPTY, "vnd.android.cursor.dir/album");
             intent.putExtra("artist", Long.valueOf(id).toString());
             startActivity(intent);
         } else if ("album".equals(selectedType)) {
             Intent intent = new Intent(Intent.ACTION_PICK);
             intent.setDataAndType(Uri.EMPTY, "vnd.android.cursor.dir/track");
             intent.putExtra("album", Long.valueOf(id).toString());
             startActivity(intent);
         } else if (position >= 0 && id >= 0){
             int [] list = new int[] { (int) id };
             MusicUtils.playAll(this, list, 0);
         } else {
             Log.e("QueryBrowser", "invalid position/id: " + position + "/" + id);
         }
     }

     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
         switch (item.getItemId()) {
             case USE_AS_RINGTONE: {
                 // Set the system setting to make this the current ringtone
                 MusicUtils.setRingtone(this, mTrackList.getSelectedItemId());
                 return true;
             }

         }
         return super.onOptionsItemSelected(item);
     }

     private Cursor getQueryCursor(AsyncQueryHandler async) {
         String[] ccols = new String[] {
                 "_id",   // this will be the artist, album or track ID
                 MediaStore.Audio.Media.MIME_TYPE, // mimetype of audio file, or "artist" or "album"
                 SearchManager.SUGGEST_COLUMN_TEXT_1,
                 "data1",
                 "data2"
         };

         Uri search = Uri.parse("content://media/external/audio/" +
                 SearchManager.SUGGEST_URI_PATH_QUERY + "/" + Uri.encode(mFilterString));

         Cursor ret = null;
         if (async != null) {
             async.startQuery(0, null, search, ccols, null, null, null);
         } else {
             ret = MusicUtils.query(this, search, ccols, null, null, null);
         }
         return ret;
     }

     class QueryListAdapter extends SimpleCursorAdapter {
         QueryListAdapter(Context context, int layout, Cursor cursor, String[] from, int[] to) {
             super(context, layout, cursor, from, to);
         }

         @Override
         public void bindView(View view, Context context, Cursor cursor) {

             TextView tv1 = (TextView) view.findViewById(R.id.line1);
             TextView tv2 = (TextView) view.findViewById(R.id.line2);
             ImageView iv = (ImageView) view.findViewById(R.id.icon);
             ViewGroup.LayoutParams p = iv.getLayoutParams();
             if (p == null) {
                 // seen this happen, not sure why
                 DatabaseUtils.dumpCursor(cursor);
                 return;
             }
             p.width = ViewGroup.LayoutParams.WRAP_CONTENT;
             p.height = ViewGroup.LayoutParams.WRAP_CONTENT;

             String mimetype = cursor.getString(cursor.getColumnIndexOrThrow(
                     MediaStore.Audio.Media.MIME_TYPE));

             if (mimetype == null) {
                 mimetype = "audio/";
             }
             if (mimetype.equals("artist")) {
                 iv.setImageResource(R.drawable.ic_search_category_music_artist);
                 String name = cursor.getString(cursor.getColumnIndexOrThrow(
                         SearchManager.SUGGEST_COLUMN_TEXT_1));
                 String displayname = name;
                 if (name.equals(MediaFile.UNKNOWN_STRING)) {
                     displayname = context.getString(R.string.unknown_artist_name);
                 }
                 tv1.setText(displayname);

                 int numalbums = cursor.getInt(cursor.getColumnIndexOrThrow("data1"));
                 int numsongs = cursor.getInt(cursor.getColumnIndexOrThrow("data2"));

                 String songs_albums = MusicUtils.makeAlbumsSongsLabel(context,
                         numalbums, numsongs, name.equals(MediaFile.UNKNOWN_STRING));

                 tv2.setText(songs_albums);

             } else if (mimetype.equals("album")) {
                 iv.setImageResource(R.drawable.ic_search_category_music_album);
                 String name = cursor.getString(cursor.getColumnIndexOrThrow(
                         SearchManager.SUGGEST_COLUMN_TEXT_1));
                 String displayname = name;
                 if (name.equals(MediaFile.UNKNOWN_STRING)) {
                     displayname = context.getString(R.string.unknown_album_name);
                 }
                 tv1.setText(displayname);

                 name = cursor.getString(cursor.getColumnIndexOrThrow("data1"));
                 displayname = name;
                 if (name.equals(MediaFile.UNKNOWN_STRING)) {
                     displayname = context.getString(R.string.unknown_artist_name);
                 }
                 tv2.setText(displayname);

             } else if(mimetype.startsWith("audio/") ||
                     mimetype.equals("application/ogg") ||
                     mimetype.equals("application/x-ogg")) {
                 iv.setImageResource(R.drawable.ic_search_category_music_song);
                 String name = cursor.getString(cursor.getColumnIndexOrThrow(
                         SearchManager.SUGGEST_COLUMN_TEXT_1));
                 tv1.setText(name);

                 String displayname = cursor.getString(cursor.getColumnIndexOrThrow("data1"));
                 if (name.equals(MediaFile.UNKNOWN_STRING)) {
                     displayname = context.getString(R.string.unknown_artist_name);
                 }
                 name = cursor.getString(cursor.getColumnIndexOrThrow("data2"));
                 if (name.equals(MediaFile.UNKNOWN_STRING)) {
                     name = context.getString(R.string.unknown_artist_name);
                 }
                 tv2.setText(displayname + " - " + name);
             }
         }
         @Override
         public void changeCursor(Cursor cursor) {
             super.changeCursor(cursor);
             mQueryCursor = cursor;
         }
         @Override
         public Cursor runQueryOnBackgroundThread(CharSequence constraint) {
             mFilterString = constraint.toString();
             return getQueryCursor(null);
         }
     }

     private ListView mTrackList;
     private Cursor mQueryCursor;
 }
	/*
	* Copyright (C) 2007 The Android Open Source Project
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	package com.android.music;

	import android.app.ListActivity;
	import android.app.SearchManager;
	import android.content.AsyncQueryHandler;
	import android.content.ContentResolver;
	import android.content.Context;
	import android.content.Intent;
	import com.android.internal.database.ArrayListCursor;
	import com.android.music.TrackBrowserActivity.MyQueryHandler;

	import android.database.Cursor;
	import android.database.DatabaseUtils;
	import android.media.AudioManager;
	import android.media.MediaFile;
	import android.net.Uri;
	import android.os.Bundle;
	import android.provider.MediaStore;
	import android.util.Log;
	import android.view.KeyEvent;
	import android.view.MenuItem;
	import android.view.View;
	import android.view.ViewGroup;
	import android.view.Window;
	import android.view.ViewGroup.OnHierarchyChangeListener;
	import android.widget.ImageView;
	import android.widget.ListView;
	import android.widget.SimpleCursorAdapter;
	import android.widget.TextView;

	import java.util.ArrayList;

	public class QueryBrowserActivity extends ListActivity implements MusicUtils.Defs
	{
	private final static int PLAY_NOW = 0;
	private final static int ADD_TO_QUEUE = 1;
	private final static int PLAY_NEXT = 2;
	private final static int PLAY_ARTIST = 3;
	private final static int EXPLORE_ARTIST = 4;
	private final static int PLAY_ALBUM = 5;
	private final static int EXPLORE_ALBUM = 6;
	private final static int REQUERY = 3;
	private MyQueryHandler mQueryHandler;
	private String mFilterString = "";

	public QueryBrowserActivity()
	{
	}

	/** Called when the activity is first created. */
	@Override
	public void onCreate(Bundle icicle)
	{
	super.onCreate(icicle);
	setVolumeControlStream(AudioManager.STREAM_MUSIC);
	MusicUtils.bindToService(this);

	if (icicle == null) {
	Intent intent = getIntent();
	mFilterString = intent.getStringExtra(SearchManager.QUERY);
	}
	if (mFilterString == null) {
	mFilterString = "";
	}

	setContentView(R.layout.query_activity);
	mTrackList = (ListView) findViewById(android.R.id.list);

	mQueryHandler = new MyQueryHandler(getContentResolver());
	mQueryCursor = (Cursor) getLastNonConfigurationInstance();
	if (mQueryCursor == null) {
	//Log.i("@@@", "starting query");
	setTitle(R.string.working_songs);
	getQueryCursor(mQueryHandler);
	} else {
	init(mQueryCursor);
	}
	}

	@Override
	public Object onRetainNonConfigurationInstance() {
	Cursor c = mQueryCursor;
	mQueryCursor = null;
	return c;
	}

	class MyQueryHandler extends AsyncQueryHandler {
	MyQueryHandler(ContentResolver res) {
	super(res);
	}

	@Override
	protected void onQueryComplete(int token, Object cookie, Cursor cursor) {
	Log.i("@@@", "query complete");
	init(cursor);
	}
	}

	@Override
	public void onDestroy() {
	MusicUtils.unbindFromService(this);
	super.onDestroy();
	if (mQueryCursor != null) {
	mQueryCursor.close();
	}
	}

	public void init(Cursor c) {

	mQueryCursor = c;

	ListView lv = getListView();
	lv.setTextFilterEnabled(true);

	if (mQueryCursor == null) {
	MusicUtils.displayDatabaseError(this);
	setListAdapter(null);
	lv.setFocusable(false);
	return;
	}

	// Map Cursor columns to views defined in media_list_item.xml
	QueryListAdapter adapter = new QueryListAdapter(
	this,
	R.layout.track_list_item,
	mQueryCursor,
	new String[] {},
	new int[] {});

	setListAdapter(adapter);

	if (mFilterString.length() != 0) {
	// Hack. Can be removed once ListView supports starting filtering with a given string
	lv.setOnHierarchyChangeListener(mHierarchyListener);
	}
	}

	OnHierarchyChangeListener mHierarchyListener = new OnHierarchyChangeListener() {
	public void onChildViewAdded(View parent, View child) {
	((ListView)parent).setOnHierarchyChangeListener(null);
	// need to do this here to be sure all the views have been initialized
	startFilteringWithString(mFilterString);
	}

	public void onChildViewRemoved(View parent, View child) {
	}
	};

	private KeyEvent eventForChar(char c) {
	int code = -1;
	if (c >= 'a' && c <= 'z') {
	code = KeyEvent.KEYCODE_A + (c - 'a');
	} else if (c >= 'A' && c <= 'Z') {
	code = KeyEvent.KEYCODE_A + (c - 'A');
	} else if (c >= '0' && c <= '9') {
	code = KeyEvent.KEYCODE_0 + (c - '0');
	}
	if (code != -1) {
	return new KeyEvent(KeyEvent.ACTION_DOWN, code);
	}
	return null;
	}
	private void startFilteringWithString(String filterstring) {
	ListView lv = getListView();
	for (int i = 0; i < filterstring.length(); i++) {
	KeyEvent event = eventForChar(filterstring.charAt(i));
	if (event != null) {
	lv.onKeyDown(event.getKeyCode(), event);
	}
	}
	}

	@Override
	protected void onListItemClick(ListView l, View v, int position, long id)
	{
	// Dialog doesn't allow us to wait for a result, so we need to store
	// the info we need for when the dialog posts its result
	mQueryCursor.moveToPosition(position);
	if (mQueryCursor.isBeforeFirst() \|\| mQueryCursor.isAfterLast()) {
	return;
	}
	String selectedType = mQueryCursor.getString(mQueryCursor.getColumnIndexOrThrow(
	MediaStore.Audio.Media.MIME_TYPE));

	if ("artist".equals(selectedType)) {
	Intent intent = new Intent(Intent.ACTION_PICK);
	intent.setDataAndType(Uri.EMPTY, "vnd.android.cursor.dir/album");
	intent.putExtra("artist", Long.valueOf(id).toString());
	startActivity(intent);
	} else if ("album".equals(selectedType)) {
	Intent intent = new Intent(Intent.ACTION_PICK);
	intent.setDataAndType(Uri.EMPTY, "vnd.android.cursor.dir/track");
	intent.putExtra("album", Long.valueOf(id).toString());
	startActivity(intent);
	} else if (position >= 0 && id >= 0){
	int [] list = new int[] { (int) id };
	MusicUtils.playAll(this, list, 0);
	} else {
	Log.e("QueryBrowser", "invalid position/id: " + position + "/" + id);
	}
	}

	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
	switch (item.getItemId()) {
	case USE_AS_RINGTONE: {
	// Set the system setting to make this the current ringtone
	MusicUtils.setRingtone(this, mTrackList.getSelectedItemId());
	return true;
	}

	}
	return super.onOptionsItemSelected(item);
	}

	private Cursor getQueryCursor(AsyncQueryHandler async) {
	String[] ccols = new String[] {
	"_id", // this will be the artist, album or track ID
	MediaStore.Audio.Media.MIME_TYPE, // mimetype of audio file, or "artist" or "album"
	SearchManager.SUGGEST_COLUMN_TEXT_1,
	"data1",
	"data2"
	};

	Uri search = Uri.parse("content://media/external/audio/" +
	SearchManager.SUGGEST_URI_PATH_QUERY + "/" + Uri.encode(mFilterString));

	Cursor ret = null;
	if (async != null) {
	async.startQuery(0, null, search, ccols, null, null, null);
	} else {
	ret = MusicUtils.query(this, search, ccols, null, null, null);
	}
	return ret;
	}

	class QueryListAdapter extends SimpleCursorAdapter {
	QueryListAdapter(Context context, int layout, Cursor cursor, String[] from, int[] to) {
	super(context, layout, cursor, from, to);
	}

	@Override
	public void bindView(View view, Context context, Cursor cursor) {

	TextView tv1 = (TextView) view.findViewById(R.id.line1);
	TextView tv2 = (TextView) view.findViewById(R.id.line2);
	ImageView iv = (ImageView) view.findViewById(R.id.icon);
	ViewGroup.LayoutParams p = iv.getLayoutParams();
	if (p == null) {
	// seen this happen, not sure why
	DatabaseUtils.dumpCursor(cursor);
	return;
	}
	p.width = ViewGroup.LayoutParams.WRAP_CONTENT;
	p.height = ViewGroup.LayoutParams.WRAP_CONTENT;

	String mimetype = cursor.getString(cursor.getColumnIndexOrThrow(
	MediaStore.Audio.Media.MIME_TYPE));

	if (mimetype == null) {
	mimetype = "audio/";
	}
	if (mimetype.equals("artist")) {
	iv.setImageResource(R.drawable.ic_search_category_music_artist);
	String name = cursor.getString(cursor.getColumnIndexOrThrow(
	SearchManager.SUGGEST_COLUMN_TEXT_1));
	String displayname = name;
	if (name.equals(MediaFile.UNKNOWN_STRING)) {
	displayname = context.getString(R.string.unknown_artist_name);
	}
	tv1.setText(displayname);

	int numalbums = cursor.getInt(cursor.getColumnIndexOrThrow("data1"));
	int numsongs = cursor.getInt(cursor.getColumnIndexOrThrow("data2"));

	String songs_albums = MusicUtils.makeAlbumsSongsLabel(context,
	numalbums, numsongs, name.equals(MediaFile.UNKNOWN_STRING));

	tv2.setText(songs_albums);

	} else if (mimetype.equals("album")) {
	iv.setImageResource(R.drawable.ic_search_category_music_album);
	String name = cursor.getString(cursor.getColumnIndexOrThrow(
	SearchManager.SUGGEST_COLUMN_TEXT_1));
	String displayname = name;
	if (name.equals(MediaFile.UNKNOWN_STRING)) {
	displayname = context.getString(R.string.unknown_album_name);
	}
	tv1.setText(displayname);

	name = cursor.getString(cursor.getColumnIndexOrThrow("data1"));
	displayname = name;
	if (name.equals(MediaFile.UNKNOWN_STRING)) {
	displayname = context.getString(R.string.unknown_artist_name);
	}
	tv2.setText(displayname);

	} else if(mimetype.startsWith("audio/") \|\|
	mimetype.equals("application/ogg") \|\|
	mimetype.equals("application/x-ogg")) {
	iv.setImageResource(R.drawable.ic_search_category_music_song);
	String name = cursor.getString(cursor.getColumnIndexOrThrow(
	SearchManager.SUGGEST_COLUMN_TEXT_1));
	tv1.setText(name);

	String displayname = cursor.getString(cursor.getColumnIndexOrThrow("data1"));
	if (name.equals(MediaFile.UNKNOWN_STRING)) {
	displayname = context.getString(R.string.unknown_artist_name);
	}
	name = cursor.getString(cursor.getColumnIndexOrThrow("data2"));
	if (name.equals(MediaFile.UNKNOWN_STRING)) {
	name = context.getString(R.string.unknown_artist_name);
	}
	tv2.setText(displayname + " - " + name);
	}
	}
	@Override
	public void changeCursor(Cursor cursor) {
	super.changeCursor(cursor);
	mQueryCursor = cursor;
	}
	@Override
	public Cursor runQueryOnBackgroundThread(CharSequence constraint) {
	mFilterString = constraint.toString();
	return getQueryCursor(null);
	}
	}

	private ListView mTrackList;
	private Cursor mQueryCursor;
	}