1 /* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.music; 18 19 import android.app.Activity; 20 import android.app.ListActivity; 21 import android.content.ComponentName; 22 import android.content.Context; 23 import android.content.Intent; 24 import android.graphics.Color; 25 import android.graphics.drawable.Drawable; 26 import android.media.AudioManager; 27 import android.media.MediaDescription; 28 import android.media.MediaMetadata; 29 import android.media.browse.MediaBrowser; 30 import android.media.session.MediaController; 31 import android.media.session.MediaSession; 32 import android.os.Bundle; 33 import android.util.Log; 34 import android.view.LayoutInflater; 35 import android.view.View; 36 import android.view.ViewGroup; 37 import android.view.Window; 38 import android.widget.*; 39 import com.android.music.utils.LogHelper; 40 import com.android.music.utils.MediaIDHelper; 41 42 import java.util.ArrayList; 43 import java.util.List; 44 45 /* 46 This activity shows when there is a need for 47 1. Songs tab [withtab = true] 48 2. Browse songs within an album [withtab = false] 49 3. Browse songs within a playlist [withtab = false] 50 4. Browse songs within now playing queue [withtab = false] 51 */ 52 public class TrackBrowserActivity extends ListActivity { 53 private static final String TAG = LogHelper.makeLogTag(TrackBrowserActivity.class); 54 private static final MediaBrowser.MediaItem DEFAULT_PARENT_ITEM = 55 new MediaBrowser.MediaItem(new MediaDescription.Builder() 56 .setMediaId(MediaIDHelper.MEDIA_ID_MUSICS_BY_SONG) 57 .setTitle("Songs") 58 .build(), 59 MediaBrowser.MediaItem.FLAG_BROWSABLE); 60 61 // Underlining ListView of this Activity 62 private ListView mTrackList; 63 // The mediaId to be used for subscribing for children using the MediaBrowser. 64 private MediaBrowser.MediaItem mParentItem; 65 private MediaBrowser mMediaBrowser; 66 private TrackBrowseAdapter mBrowseListAdapter; 67 private boolean mWithTabs; 68 69 /** 70 * Called when the activity is first created. 71 */ 72 @Override onCreate(Bundle icicle)73 public void onCreate(Bundle icicle) { 74 Log.d(TAG, "onCreate()"); 75 super.onCreate(icicle); 76 // Process past states 77 Intent intent = getIntent(); 78 if (icicle != null) { 79 LogHelper.d(TAG, "Launch by saved instance state"); 80 mParentItem = icicle.getParcelable(MusicUtils.TAG_PARENT_ITEM); 81 mWithTabs = icicle.getBoolean(MusicUtils.TAG_WITH_TABS); 82 MusicUtils.updateNowPlaying(this); 83 } else if (intent != null) { 84 LogHelper.d(TAG, "Launch by intent"); 85 mParentItem = intent.getParcelableExtra(MusicUtils.TAG_PARENT_ITEM); 86 mWithTabs = intent.getBooleanExtra(MusicUtils.TAG_WITH_TABS, false); 87 } 88 if (mParentItem == null) { 89 LogHelper.d(TAG, "Launch by default parameters"); 90 mParentItem = DEFAULT_PARENT_ITEM; 91 mWithTabs = true; 92 } 93 if (mWithTabs) { 94 requestWindowFeature(Window.FEATURE_NO_TITLE); 95 } 96 setTitle(mParentItem.getDescription().getTitle()); 97 setVolumeControlStream(AudioManager.STREAM_MUSIC); 98 99 // Init layout 100 LogHelper.d(TAG, "init layout"); 101 setContentView(R.layout.media_picker_activity); 102 MusicUtils.updateButtonBar(this, R.id.songtab); 103 104 // Init the ListView 105 Log.d(TAG, "Creating ListView"); 106 mTrackList = getListView(); 107 mTrackList.setCacheColorHint(0); 108 mTrackList.setTextFilterEnabled(true); 109 mBrowseListAdapter = (TrackBrowseAdapter) getLastNonConfigurationInstance(); 110 if (mBrowseListAdapter == null) { 111 mBrowseListAdapter = new TrackBrowseAdapter(this, R.layout.track_list_item); 112 } 113 setListAdapter(mBrowseListAdapter); 114 // don't set the album art until after the view has been layed out 115 mTrackList.post(new Runnable() { 116 public void run() { 117 mTrackList.setBackgroundColor(Color.WHITE); 118 mTrackList.setCacheColorHint(0); 119 } 120 }); 121 122 // Create media browser 123 Log.d(TAG, "Creating MediaBrowser"); 124 mMediaBrowser = new MediaBrowser(this, new ComponentName(this, MediaPlaybackService.class), 125 mConnectionCallback, null); 126 } 127 128 @Override onStart()129 public void onStart() { 130 Log.d(TAG, "onStart()"); 131 super.onStart(); 132 mMediaBrowser.connect(); 133 } 134 135 @Override onStop()136 public void onStop() { 137 Log.d(TAG, "onStop()"); 138 super.onStop(); 139 mMediaBrowser.disconnect(); 140 } 141 142 @Override onDestroy()143 public void onDestroy() { 144 Log.d(TAG, "onDestroy()"); 145 ListView lv = getListView(); 146 // Because we pass the adapter to the next activity, we need to make 147 // sure it doesn't keep a reference to this activity. We can do this 148 // by clearing its DatasetObservers, which setListAdapter(null) does. 149 setListAdapter(null); 150 mBrowseListAdapter = null; 151 super.onDestroy(); 152 } 153 154 @Override onResume()155 public void onResume() { 156 Log.d(TAG, "onResume()"); 157 super.onResume(); 158 } 159 160 @Override onPause()161 public void onPause() { 162 Log.d(TAG, "onPause()"); 163 super.onPause(); 164 } 165 166 @Override onSaveInstanceState(Bundle outcicle)167 public void onSaveInstanceState(Bundle outcicle) { 168 outcicle.putParcelable(MusicUtils.TAG_PARENT_ITEM, mParentItem); 169 outcicle.putBoolean(MusicUtils.TAG_WITH_TABS, mWithTabs); 170 super.onSaveInstanceState(outcicle); 171 } 172 173 private MediaBrowser.SubscriptionCallback mSubscriptionCallback = 174 new MediaBrowser.SubscriptionCallback() { 175 176 @Override 177 public void onChildrenLoaded( 178 String parentId, List<MediaBrowser.MediaItem> children) { 179 mBrowseListAdapter.clear(); 180 mBrowseListAdapter.notifyDataSetInvalidated(); 181 for (MediaBrowser.MediaItem item : children) { 182 mBrowseListAdapter.add(item); 183 } 184 mBrowseListAdapter.notifyDataSetChanged(); 185 } 186 187 @Override 188 public void onError(String id) { 189 Toast.makeText(getApplicationContext(), R.string.error_loading_media, 190 Toast.LENGTH_LONG) 191 .show(); 192 } 193 }; 194 195 private MediaBrowser.ConnectionCallback mConnectionCallback = 196 new MediaBrowser.ConnectionCallback() { 197 @Override 198 public void onConnected() { 199 Log.d(TAG, "onConnected: session token " + mMediaBrowser.getSessionToken()); 200 mMediaBrowser.subscribe(mParentItem.getMediaId(), mSubscriptionCallback); 201 if (mMediaBrowser.getSessionToken() == null) { 202 throw new IllegalArgumentException("No Session token"); 203 } 204 MediaController mediaController = new MediaController( 205 TrackBrowserActivity.this, mMediaBrowser.getSessionToken()); 206 mediaController.registerCallback(mMediaControllerCallback); 207 TrackBrowserActivity.this.setMediaController(mediaController); 208 if (mediaController.getMetadata() != null && mWithTabs) { 209 MusicUtils.updateNowPlaying(TrackBrowserActivity.this); 210 } 211 } 212 213 @Override 214 public void onConnectionFailed() { 215 Log.d(TAG, "onConnectionFailed"); 216 } 217 218 @Override 219 public void onConnectionSuspended() { 220 Log.d(TAG, "onConnectionSuspended"); 221 TrackBrowserActivity.this.setMediaController(null); 222 } 223 }; 224 225 private MediaController.Callback mMediaControllerCallback = new MediaController.Callback() { 226 @Override 227 public void onMetadataChanged(MediaMetadata metadata) { 228 super.onMetadataChanged(metadata); 229 if (mWithTabs) { 230 MusicUtils.updateNowPlaying(TrackBrowserActivity.this); 231 } 232 if (mBrowseListAdapter != null) { 233 mBrowseListAdapter.notifyDataSetChanged(); 234 } 235 } 236 }; 237 238 // An adapter for showing the list of browsed MediaItem's 239 private static class TrackBrowseAdapter extends ArrayAdapter<MediaBrowser.MediaItem> { 240 private int mLayoutId; 241 private final Drawable mNowPlayingOverlay; 242 private Activity mActivity; 243 244 static class ViewHolder { 245 TextView line1; 246 TextView line2; 247 TextView duration; 248 ImageView play_indicator; 249 } 250 TrackBrowseAdapter(Activity activity, int layout)251 TrackBrowseAdapter(Activity activity, int layout) { 252 super(activity, layout, new ArrayList<>()); 253 mLayoutId = layout; 254 mNowPlayingOverlay = activity.getResources().getDrawable( 255 R.drawable.indicator_ic_mp_playing_list, activity.getTheme()); 256 mActivity = activity; 257 } 258 259 @Override getView(int position, View convertView, ViewGroup parent)260 public View getView(int position, View convertView, ViewGroup parent) { 261 Log.d(TAG, "getView()"); 262 if (convertView == null) { 263 convertView = LayoutInflater.from(getContext()).inflate(mLayoutId, parent, false); 264 ImageView iv = (ImageView) convertView.findViewById(R.id.icon); 265 iv.setVisibility(View.GONE); 266 ViewHolder vh = new ViewHolder(); 267 vh.line1 = (TextView) convertView.findViewById(R.id.line1); 268 vh.line2 = (TextView) convertView.findViewById(R.id.line2); 269 vh.duration = (TextView) convertView.findViewById(R.id.duration); 270 vh.play_indicator = (ImageView) convertView.findViewById(R.id.play_indicator); 271 convertView.setTag(vh); 272 } 273 ViewHolder holder = (ViewHolder) convertView.getTag(); 274 MediaBrowser.MediaItem item = getItem(position); 275 Log.d(TAG, "title: " + item.getDescription().getTitle()); 276 holder.line1.setText(item.getDescription().getTitle()); 277 Log.d(TAG, "artist: " + item.getDescription().getSubtitle()); 278 holder.line2.setText(item.getDescription().getSubtitle()); 279 long duration = 280 item.getDescription().getExtras().getLong(MediaMetadata.METADATA_KEY_DURATION); 281 LogHelper.d(TAG, "duration: ", duration); 282 holder.duration.setText(MusicUtils.makeTimeString(getContext(), duration / 1000)); 283 MediaController mediaController = mActivity.getMediaController(); 284 if (mediaController == null) { 285 holder.play_indicator.setImageDrawable(null); 286 return convertView; 287 } 288 MediaMetadata metadata = mediaController.getMetadata(); 289 if (metadata == null) { 290 holder.play_indicator.setImageDrawable(null); 291 return convertView; 292 } 293 if (item.getDescription().getMediaId().endsWith( 294 metadata.getString(MediaMetadata.METADATA_KEY_MEDIA_ID))) { 295 holder.play_indicator.setImageDrawable(mNowPlayingOverlay); 296 } else { 297 holder.play_indicator.setImageDrawable(null); 298 } 299 return convertView; 300 } 301 } 302 303 @Override onRetainNonConfigurationInstance()304 public Object onRetainNonConfigurationInstance() { 305 TrackBrowseAdapter a = mBrowseListAdapter; 306 return a; 307 } 308 309 @Override onListItemClick(ListView l, View v, int position, long id)310 protected void onListItemClick(ListView l, View v, int position, long id) { 311 Log.d(TAG, "onListItemClick at position " + position + ", id " + id); 312 MediaBrowser.MediaItem item = mBrowseListAdapter.getItem(position); 313 if (item.isPlayable()) { 314 getMediaController().getTransportControls().playFromMediaId(item.getMediaId(), null); 315 } 316 } 317 } 318