RingtonePreference无法在安卓8.1上添加新铃声

File sourceFile = new File(selectedFilePath);
File destinationFile = new File(Environment.getExternalStorageDirectory(), "Ringtones/" + selectedFileName);
try {
    FileChannel sourceChannel = new FileInputStream(sourceFile).getChannel();
    FileChannel destinationChannel = new FileOutputStream(destinationFile).getChannel();
    destinationChannel.transferFrom(sourceChannel, 0, sourceChannel.size());
    sourceChannel.close();
    destinationChannel.close();
} catch (IOException e) {
    e.printStackTrace();
}

String ringtonePath = Environment.getExternalStorageDirectory().getAbsolutePath() + "/Ringtones/" + selectedFileName;
File ringtoneFile = new File(ringtonePath);
ContentResolver contentResolver = getContentResolver();
ContentValues values = new ContentValues();
values.put(MediaStore.MediaColumns.DATA, ringtoneFile.getAbsolutePath());
values.put(MediaStore.MediaColumns.TITLE, selectedFileName);
values.put(MediaStore.MediaColumns.SIZE, ringtoneFile.length());
values.put(MediaStore.MediaColumns.MIME_TYPE, "audio/mp3");
values.put(MediaStore.Audio.Media.ARTIST, "Your Artist Name");
values.put(MediaStore.Audio.Media.IS_RINGTONE, true);
values.put(MediaStore.Audio.Media.IS_NOTIFICATION, false);
values.put(MediaStore.Audio.Media.IS_ALARM, false);
values.put(MediaStore.Audio.Media.IS_MUSIC, false);
Uri uri = MediaStore.Audio.Media.getContentUriForPath(ringtoneFile.getAbsolutePath());
Uri newUri = contentResolver.insert(uri, values);
RingtoneManager.setActualDefaultRingtoneUri(getApplicationContext(), RingtoneManager.TYPE_RINGTONE, newUri);