remoteViews.setImageViewBitmap（）

Question

我正在为音频播放器编写Notificator类。我的通知有自定义布局，所以我使用RemoteViews类来填充它。有4个ImageView（3个用于按钮，1个用于封面图像）和1个TextView（用于歌曲名称）。

为了显示我的通知我使用这种方法：

public void notify(final Context context) {
    mContext = context;
    mNotificationManager = (NotificationManager) mContext.getSystemService(Context.NOTIFICATION_SERVICE);
    remoteViews = new RemoteViews(context.getPackageName(),
            R.layout.notification);

    remoteViews.setImageViewResource(R.id.play,R.drawable.btn_pause_notification);

    Intent intent = new Intent(context, MainActivity.class);

    PendingIntent pIntent = PendingIntent.getActivity(context, 0, intent,
            PendingIntent.FLAG_UPDATE_CURRENT);

    Intent playPreviousIntent = new Intent(MusicService.ACTION_PREVIOUS);
    PendingIntent pendingPlayPreviousIntent = PendingIntent.getBroadcast(context, 0, playPreviousIntent, 0);
    remoteViews.setOnClickPendingIntent(R.id.previous,pendingPlayPreviousIntent);

    Intent playPauseIntent = new Intent(MusicService.ACTION_PLAYPAUSE);
    PendingIntent pendingPlayPauseIntent = PendingIntent.getBroadcast(context, 0, playPauseIntent, 0);
    remoteViews.setOnClickPendingIntent(R.id.play,pendingPlayPauseIntent);

    Intent playNextIntent = new Intent(MusicService.ACTION_NEXT);
    PendingIntent pendingPlayNextIntent = PendingIntent.getBroadcast(context, 0, playNextIntent, 0);
    remoteViews.setOnClickPendingIntent(R.id.next,pendingPlayNextIntent);

    Intent cancelIntent = new Intent(MusicService.CANCEL_NOTIFICATION);
    PendingIntent pendingCancelIntent = PendingIntent.getBroadcast(context, 0, cancelIntent, 0);


    builder = new NotificationCompat.Builder(context)
            .setSmallIcon(R.drawable.ic_play_arrow_black)
            .setAutoCancel(true)
            .setOngoing(true)
            .setOnlyAlertOnce(true)
            .setContentIntent(pIntent);

    builder.setContent(remoteViews);
    builder.setDeleteIntent(pendingCancelIntent);
    mNotificationManager.notify(NOTIFICATION_ID,builder.build());
}

当用户点击通知中的“下一个”或“上一个”按钮时，我的服务会使用以下方法更改跟踪和更新通知：

public void updateInfo(Context context, Bitmap cover, String title, String artist) {
    remoteViews.setImageViewBitmap(R.id.album_cover, Bitmap.createScaledBitmap(cover,64,64,false));
    String text;

    if(title == "")
        text = context.getString(R.string.unknown_song);
    else
        text = title;
    text += " - ";
    if(artist == "")
        text += context.getString(R.string.unknown_artist);
    else
        text += artist;
    remoteViews.setTextViewText(R.id.song,text);


    mNotificationManager.notify(NOTIFICATION_ID,builder.build());
}

问题描述： 在几次（30-40）快速（5-6 Hz）点击“下一个”或“上一个”按钮后，通知会冻结并停止更新。

问题的原因在于：

remoteViews.setImageViewBitmap(R.id.album_cover, Bitmap.createScaledBitmap(cover,64,64,false));

据我所知，此操作需要花费很多时间。如果我在25x25中设置封面尺寸，那么所有作品都是完美的。但25x25对于封面来说太小了。所以我不知道如何正确地做到这一点。请帮助。

UPD 我尝试使用Glide的异步加载，如there所述。结果好多了，但滞后仍然存在。