无法在通知中设置图像

Question

我正在为我的音频播放器创建一个带有播放按钮的简单通知。但是我无法为 .setLargeIcon() 设置位图图像。我正在尝试使用滑行来设置它。关键是这张图片会随着用户跳到下一首歌曲而改变，所以这几乎是一个动态视图。当我更改歌曲或暂停时，图像有时会出现（一瞬间）。如果你们能帮助我，我会很高兴！

代码：

构建通知：

    private void buildNotifications(PlaybackStatus playbackStatus){

    if(Build.VERSION.SDK_INT>=Build.VERSION_CODES.O){

        createChannel();
    }



    int notificationAction = android.R.drawable.ic_media_pause;//needs to be initialized
    PendingIntent play_pauseAction = null;

    //Build a new notification according to the current state of the MediaPlayer
    if (playbackStatus == PlaybackStatus.PLAYING) {
        notificationAction = android.R.drawable.ic_media_pause;
        //create the pause action
        play_pauseAction = playbackAction(1);
    } else if (playbackStatus == PlaybackStatus.PAUSED) {
        notificationAction = android.R.drawable.ic_media_play;
        //create the play action
        play_pauseAction = playbackAction(0);
    }



   final NotificationCompat.Builder notiB = new NotificationCompat.Builder(this,CHANNEL_ID);
    notiB.setShowWhen(false);
    notiB.setStyle(new MediaStyle()
            .setMediaSession(mediaSession.getSessionToken())
            .setShowActionsInCompactView(0,1,2));
    notiB.setSmallIcon(R.drawable.play_song);
    Glide.with(this).asBitmap().load(songInfoModelService.getAlbumIDArtwork()).into(new SimpleTarget<Bitmap>() {
        @Override
        public void onResourceReady(Bitmap resource, Transition<? super Bitmap> transition) {

            notiB.setLargeIcon(resource);
        }
    });
    notiB.setContentTitle(songInfoModelService.getSongName());
    notiB.setContentText(songInfoModelService.getArtistName());
    notiB.addAction(android.R.drawable.ic_media_previous, "previous", playbackAction(3));
    notiB.addAction(notificationAction, "pause", play_pauseAction);
    notiB.addAction(android.R.drawable.ic_media_next, "next", playbackAction(2));

    notification = notiB.build();
    notificationManager.notify(NOTIFICATION_ID,notification);


}

Answer 1

这不会同步工作。
Glide.with(this).asBitmap().load() 是一个异步请求，因此无论您当前的线程如何，它都会在单独的线程上执行。所以在这种情况下 notiB.setLargeIcon(resource) 永远不会被同步调用。

解决办法是在onResourceReady()里面显示通知。下载 Bitmap 后构建 Notification .

无法在通知中设置图像

Can't set image in notification

android

android-notifications

android-bitmap

android-glide