/**
* 向数据库中添加多首歌曲
*
* @param context
* @param musics
*/
public static void addAllMusicsToDatabase(Context context, List<MusicInfo> musics) {
Iterator<MusicInfo> iterator = musics.iterator();
while (iterator.hasNext()) {
MusicInfo musicInfo = (MusicInfo) iterator.next();
MusicListDatabase.insertMusic(context, musicInfo);
}
}
/**
* 将从contentProvider中获得的音乐空的成员填充
*
* @param context
* @return
*/
private static List<MusicInfo> getMusicsFromeProvider(Context context) {
List<MusicInfo> musics = MusicListDatabase.getMusics(context);
Iterator<MusicInfo> iterator = musics.iterator();
while (iterator.hasNext()) {
MusicInfo musicInfo = (MusicInfo) iterator.next();
String title = musicInfo.getTitle();
// 将provider中的本地音乐的各项成员匹配到musicinfo
if (Constans.TYPE_LOCAL == musicInfo.getType()) {
Cursor cursor =
context
.getContentResolver()
.query(
MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
null,
MusicProvider.MusicColumns.TITLE + "=?",
new String[] {title + ""},
MediaStore.Audio.Media.DEFAULT_SORT_ORDER);
if (cursor != null && cursor.moveToFirst()) {
// 需要重新设置路径，因为如果路径变了，歌曲就会找不到
String url = cursor.getString(cursor.getColumnIndex(MediaStore.Audio.Media.DATA));
long id = cursor.getLong(cursor.getColumnIndex(MediaStore.Audio.Media._ID)); // 音乐id
long album_id =
cursor.getLong(cursor.getColumnIndex(MediaStore.Audio.Media.ALBUM_ID)); // 专辑ID
String artist =
cursor.getString(cursor.getColumnIndex(MediaStore.Audio.Media.ARTIST)); // 艺术家
long duration =
cursor.getLong(cursor.getColumnIndex(MediaStore.Audio.Media.DURATION)); // 时长
long size = cursor.getLong(cursor.getColumnIndex(MediaStore.Audio.Media.SIZE)); // 文件大小
int isMusic =
cursor.getInt(cursor.getColumnIndex(MediaStore.Audio.Media.IS_MUSIC)); // 是否为音乐
if (isMusic != 0) { // 只把音乐添加到集合当中
musicInfo.setUrl(url);
musicInfo.setId(id);
musicInfo.setAlbum_id(album_id);
musicInfo.setArtist(artist);
musicInfo.setDuration(duration);
musicInfo.setSize(size);
}
} else {
Log.e(TAG, "query failure!");
}
cursor.close();
}
}
return musics;
}