如何更新默认歌曲元数据？

Question

我想更新Trackmat，歌曲，专辑，流派，艺术家和歌曲封面图片等歌曲元数据字段。

我试图寻找更新meta的代码找不到任何解决方案。

Answer 1

你的问题不是问题，也不详细。但我可以从谷歌样本中找到一个很棒的媒体播放器，名为UAMP（通用Android媒体播放器），处理所有关于Android媒体播放器的内容。 Link

UAMP使用MediaMetadataCompat更新歌曲元数据，如下面的代码段。

fun MediaMetadataCompat.Builder.from(jsonMusic: JsonMusic): MediaMetadataCompat.Builder {
// The duration from the JSON is given in seconds, but the rest of the code works in
// milliseconds. Here's where we convert to the proper units.
val durationMs = TimeUnit.SECONDS.toMillis(jsonMusic.duration)

id = jsonMusic.id
title = jsonMusic.title
artist = jsonMusic.artist
album = jsonMusic.album
duration = durationMs
genre = jsonMusic.genre
mediaUri = jsonMusic.source
albumArtUri = jsonMusic.image
trackNumber = jsonMusic.trackNumber
trackCount = jsonMusic.totalTrackCount
flag = MediaItem.FLAG_PLAYABLE

// To make things easier for *displaying* these, set the display properties as well.
displayTitle = jsonMusic.title
displaySubtitle = jsonMusic.artist
displayDescription = jsonMusic.album
displayIconUri = jsonMusic.image

// Add downloadStatus to force the creation of an "extras" bundle in the resulting
// MediaMetadataCompat object. This is needed to send accurate metadata to the
// media session during updates.
downloadStatus = STATUS_NOT_DOWNLOADED

// Allow it to be used in the typical builder style.
return this

}

通过此组件，您可以更新通知，锁定屏幕和主屏幕中的歌曲数据。

Answer 2

要更新歌曲的元数据，我们可以使用ID3标签。我们可以使用Mp3Tag编辑器更新这些 - https://github.com/aminb/id3r，MyID3（）编辑器 - https://github.com/ericfarng/jid3lib和Jaudiotagger - https://github.com/Adonai/jaudiotagger。

Mp3Tag编辑器 - 只支持Mp3歌曲类型MyID3编辑器 - 可以轻松编辑歌曲但不是所有提供的字段都更新Jaudiotagger - 这支持Mp3，Flac，OggVorbis，Mp4，Aiff，Wav，Wma，Dsf音频格式它没有任何问题更新数据

try {
      val audioFile = AudioFileIO.read(file)
            val tag = audioFile?.tagOrCreateAndSetDefault
             tag?.setField(FieldKey.ARTIST, binding?.tiArtist?.text?.toString())
            tag?.setField(FieldKey.ALBUM, binding?.tiAlbum?.text?.toString())
            tag?.setField(FieldKey.GENRE, binding?.tiGenre?.text?.toString())
            tag?.setField(FieldKey.TITLE, binding?.tiTrack?.text?.toString())

            // Handle the image setting
            try {
                    val pfd = contentResolver.openFileDescriptor(imageUri, "r") ?: return

                    val fis = FileInputStream(pfd.fileDescriptor)
                    val imgBytes = JavaUtils.readFully(fis)
                    val cover = AndroidArtwork()
                    cover.binaryData = imgBytes
                    cover.mimeType = ImageFormats.getMimeTypeForBinarySignature(byteArray)
                    cover.description = ""
                    cover.pictureType = PictureTypes.DEFAULT_ID
                    tag?.deleteArtworkField()
                    tag?.setField(cover)
                    fis.close()

              // to do check the file write option for both internal and external card
             // Handle the Storage Access FrameWork API if song is from SD card
            if (audioFile?.file?.let { SafUtils.isSafNeeded(it, this) } == true) {
              // Handle writing into SD card
              // Check if SAF permission is provided then only we can update metadata 
             // If SAF Permission is not provided. EACCESS : Permission Denied error is displayed 
            // After the permission success then only we can update meta.
                 writeIntoSDCard()
            } else {
                // Handle writing into internal card
                writeInInternalStorage()
            }
         } catch (e: Exception) { }
        } catch (e: Exception) {
            // Show error on failure while writing
        } catch (e: Error) {
            // Show error on failure while writing
        }      

编写元数据

// After update refresh the file else the changes will not be reflected
AudioFileIO.write(audioFile)
MediaScannerConnection.scanFile(context, arrayOf(file?.absolutePath ?: ""), null, null)