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Diffstat (limited to 'MusicDemo/src/main/java/com/example/android/musicservicedemo/utils/MediaIDHelper.java')
| -rw-r--r-- | MusicDemo/src/main/java/com/example/android/musicservicedemo/utils/MediaIDHelper.java | 88 |
1 files changed, 0 insertions, 88 deletions
diff --git a/MusicDemo/src/main/java/com/example/android/musicservicedemo/utils/MediaIDHelper.java b/MusicDemo/src/main/java/com/example/android/musicservicedemo/utils/MediaIDHelper.java deleted file mode 100644 index 2406886..0000000 --- a/MusicDemo/src/main/java/com/example/android/musicservicedemo/utils/MediaIDHelper.java +++ /dev/null @@ -1,88 +0,0 @@ -/* - * Copyright (C) 2014 Google Inc. All Rights Reserved. - * - * 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.example.android.musicservicedemo.utils; - -import android.media.MediaMetadata; - -/** - * Utility class to help on queue related tasks. - */ -public class MediaIDHelper { - - private static final String TAG = "MediaIDHelper"; - - // Media IDs used on browseable items of MediaBrowser - public static final String MEDIA_ID_ROOT = "__ROOT__"; - public static final String MEDIA_ID_MUSICS_BY_GENRE = "__BY_GENRE__"; - - public static final String createTrackMediaID(String categoryType, String categoryValue, - MediaMetadata track) { - // MediaIDs are of the form <categoryType>/<categoryValue>|<musicUniqueId>, to make it easy to - // find the category (like genre) that a music was selected from, so we - // can correctly build the playing queue. This is specially useful when - // one music can appear in more than one list, like "by genre -> genre_1" - // and "by artist -> artist_1". - return categoryType + "/" + categoryValue + "|" + - track.getString(MediaMetadata.METADATA_KEY_MEDIA_ID); - } - - public static final String createBrowseCategoryMediaID(String categoryType, String categoryValue) { - return categoryType + "/" + categoryValue; - } - - /** - * Extracts unique musicID from the mediaID. mediaID is, by this sample's convention, a - * concatenation of category (eg "by_genre"), categoryValue (eg "Classical") and unique - * musicID. This is necessary so we know where the user selected the music from, when the music - * exists in more than one music list, and thus we are able to correctly build the playing queue. - * - * @param musicID - * @return - */ - public static final String extractMusicIDFromMediaID(String musicID) { - String[] segments = musicID.split("\\|", 2); - return segments.length == 2 ? segments[1] : null; - } - - /** - * Extracts category and categoryValue from the mediaID. mediaID is, by this sample's - * convention, a concatenation of category (eg "by_genre"), categoryValue (eg "Classical") and - * mediaID. This is necessary so we know where the user selected the music from, when the music - * exists in more than one music list, and thus we are able to correctly build the playing queue. - * - * @param mediaID - * @return - */ - public static final String[] extractBrowseCategoryFromMediaID(String mediaID) { - if (mediaID.indexOf('|') >= 0) { - mediaID = mediaID.split("\\|")[0]; - } - if (mediaID.indexOf('/') == 0) { - return new String[]{mediaID, null}; - } else { - return mediaID.split("/", 2); - } - } - - public static final String extractBrowseCategoryValueFromMediaID(String mediaID) { - String[] categoryAndValue = extractBrowseCategoryFromMediaID(mediaID); - if (categoryAndValue != null && categoryAndValue.length == 2) { - return categoryAndValue[1]; - } - return null; - } -}
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