get Song List For Playlist - Android Media

Android examples for Media:Song

  1. HOME
  2. Android
  3. Media
  4. Song

Description

get Song List For Playlist

Demo Code

/*//  w w w  . j  a  va2 s .c  om
 * Copyright (C) 2008 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.java2s;

import android.content.ContentResolver;

import android.content.Context;

import android.database.Cursor;

import android.net.Uri;

import android.provider.MediaStore;

public class Main {
    private final static int[] sEmptyList = new int[0];

    public static int[] getSongListForPlaylist(Context context, long plid) {
        final String[] ccols = new String[] { MediaStore.Audio.Playlists.Members.AUDIO_ID };
        Cursor cursor = query(context,
                MediaStore.Audio.Playlists.Members.getContentUri(
                        "external", plid), ccols, null, null,
                MediaStore.Audio.Playlists.Members.DEFAULT_SORT_ORDER);

        if (cursor != null) {
            int[] list = getSongListForCursor(cursor);
            cursor.close();
            return list;
        }
        return sEmptyList;
    }

    public static Cursor query(Context context, Uri uri,
            String[] projection, String selection, String[] selectionArgs,
            String sortOrder) {
        try {
            ContentResolver resolver = context.getContentResolver();
            if (resolver == null) {
                return null;
            }
            return resolver.query(uri, projection, selection,
                    selectionArgs, sortOrder);
        } catch (UnsupportedOperationException ex) {
            return null;
        }

    }

    public static int[] getSongListForCursor(Cursor cursor) {
        if (cursor == null) {
            return sEmptyList;
        }
        int len = cursor.getCount();
        int[] list = new int[len];
        cursor.moveToFirst();
        int colidx = -1;
        try {
            colidx = cursor
                    .getColumnIndexOrThrow(MediaStore.Audio.Playlists.Members.AUDIO_ID);
        } catch (IllegalArgumentException ex) {
            colidx = cursor
                    .getColumnIndexOrThrow(MediaStore.Audio.Media._ID);
        }
        for (int i = 0; i < len; i++) {
            list[i] = cursor.getInt(colidx);
            cursor.moveToNext();
        }
        return list;
    }
}

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