获取android歌曲流派的最有效方法

String[] projection = {MediaStore.Audio.Media.GENRE};
String selection = MediaStore.Audio.Media.IS_MUSIC + "!= 0";
Cursor cursor = getContentResolver().query(
    MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
    projection,
    selection,
    null,
    null
);

if (cursor != null) {
    while (cursor.moveToNext()) {
        String genre = cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Audio.Media.GENRE));
        // 处理流派信息
    }
    cursor.close();
}

MediaMetadataRetriever retriever = new MediaMetadataRetriever();
retriever.setDataSource(filePath);
String genre = retriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_GENRE);
// 处理流派信息
retriever.release();

ExtractorMediaSource.Factory factory = new ExtractorMediaSource.Factory(dataSourceFactory);
MediaSource mediaSource = factory.createMediaSource(Uri.parse(filePath));
Metadata metadata = mediaSource.getMetadata();
if (metadata != null) {
    for (int i = 0; i < metadata.length(); i++) {
        Metadata.Entry entry = metadata.get(i);
        if (entry instanceof Metadata.Genre) {
            String genre = ((Metadata.Genre) entry).genre;
            // 处理流派信息
        }
    }
}