获取android音乐部分可用信息

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val cursor = appContext.contentResolver.query(
            MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, arrayOf(
                MediaStore.Audio.Media._ID,
                MediaStore.Audio.Media.TITLE,
                MediaStore.Audio.Media.DATA,
                MediaStore.Audio.Media.ALBUM_ID,
                MediaStore.Audio.Media.DURATION
            ), MediaStore.Audio.Media.DURATION+ ">'1000'", null, null
        )


        if (cursor != null) {
            try {
                while (cursor.moveToNext()) {
                    val song = Song(
                        cursor.getLong(0),
                        cursor.getString(1),
                        cursor.getString(2),
                        cursor.getLong(3),
                        cursor.getLong(4),
                    )
                    _musicList.add(song)
                }
            } finally {
                cursor.close()
            }
        }
    }

在已有Album的基础上获取音乐专辑图片信息

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override fun getAlbumArt(albumId: Long): Bitmap {
        val albumArtUri = ContentUris.withAppendedId(MEDIA_ALBUMART_URI,albumId)
        try {
            val inputstream = appContext.contentResolver.openInputStream(albumArtUri)
            return BitmapFactory.decodeStream(inputstream)
        }catch (e: Exception){
            e.printStackTrace()
        }

        return music_default_art
    }