Main.java Source code

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Here is the source code for Main.java

Source

//package com.java2s;
/*
 * FFmpegMediaPlayer: A unified interface for playing audio files and streams.
 *
 * Copyright 2014 William Seemann
 * 
 * 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.
 */

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 long[] sEmptyList = new long[0];

    public static long[] getSongListForArtist(Context context, long id) {
        final String[] ccols = new String[] { MediaStore.Audio.Media._ID };
        String where = MediaStore.Audio.Media.ARTIST_ID + "=" + id + " AND " + MediaStore.Audio.Media.IS_MUSIC
                + "=1";
        Cursor cursor = query(context, MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, ccols, where, null,
                MediaStore.Audio.Media.ALBUM_KEY + "," + MediaStore.Audio.Media.TRACK);

        if (cursor != null) {
            long[] 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, int limit) {
        try {
            ContentResolver resolver = context.getContentResolver();
            if (resolver == null) {
                return null;
            }
            if (limit > 0) {
                uri = uri.buildUpon().appendQueryParameter("limit", "" + limit).build();
            }
            return resolver.query(uri, projection, selection, selectionArgs, sortOrder);
        } catch (UnsupportedOperationException ex) {
            return null;
        }

    }

    public static Cursor query(Context context, Uri uri, String[] projection, String selection,
            String[] selectionArgs, String sortOrder) {
        return query(context, uri, projection, selection, selectionArgs, sortOrder, 0);
    }

    public static long[] getSongListForCursor(Cursor cursor) {
        if (cursor == null) {
            return sEmptyList;
        }
        int len = cursor.getCount();
        long[] list = new long[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.getLong(colidx);
            cursor.moveToNext();
        }
        return list;
    }
}