Question

我想为音乐播放器应用创建通知。我想在上一个动作，播放/暂停，下一个动作的通知上添加三个“动作”按钮。对于操作，我想从drawable（R.drawable.ic_pervious，R.drawable.ic_pause和R.drawable.ic_next）添加图标。经过研究，我使用了以下代码，但图标对我不可见。

NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this, channelId);
        Notification notification = notificationBuilder.setOngoing(true)
                .setSmallIcon(R.drawable.ic_launcher_background)
                .setContentTitle(getString(R.string.app_name))
                .setContentText("Apna time ayega")
                .setPriority(NotificationManager.IMPORTANCE_MIN)
                .setCategory(Notification.CATEGORY_SERVICE)
                .setContentIntent(resultPendingIntent) //intent
                .addAction(R.drawable.ic_pervious, "", pendingPrevIntent)
                .addAction(R.drawable.ic_pause, "", pendingPlayIntent)
                .addAction(R.drawable.ic_next, "", pendingNextIntent)
                .build();
        NotificationManagerCompat notificationManager = NotificationManagerCompat.from(this);
        notificationManager.notify(1, notificationBuilder.build());
        startForeground(1, notification);

Answer 1

从android牛轧糖开始，通知中没有通知操作图标。但是，通知操作图标是必需的，并且它们显示在较早的android和Android wear中。

来源-https://android-developers.googleblog.com/2016/06/notifications-in-android-n.html

Answer 2

NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this, channelId);
        notificationBuilder.setOngoing(true)
                .setSmallIcon(R.drawable.ic_launcher_background)
                .setContentTitle(getString(R.string.app_name))
                .setContentText("Apna time ayega")
                .setPriority(NotificationManager.IMPORTANCE_MIN)
                .setCategory(Notification.CATEGORY_SERVICE)
                .setContentIntent(resultPendingIntent) //intent
                .addAction(R.drawable.ic_pervious, "", pendingPrevIntent)
                .addAction(R.drawable.ic_pause, "", pendingPlayIntent)
                .addAction(R.drawable.ic_next, "", pendingNextIntent);

NotificationManagerCompat notificationManager = NotificationManagerCompat.from(this);
notificationManager.notify(1, notificationBuilder.build());

也许这会对您有所帮助

通知的“操作”按钮中的图标不可见

2 个答案: