如何在Android Oreo及以上版本的通知托盘中显示带有图片的Android通知？

我想在Android 7.0 API24上显示如下通知：

但我得到的结果只是托盘图标而不是全部内容。Android 8.1.0 API27：

代码：

我不知道为什么它在较低的api下工作，但在较高的api下它不工作

NotificationChannel似乎有问题，但无法找到原因

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如何在over OREO api上显示如上图所示的通知的完整内容？

我在您的代码中没有发现任何可疑之处，但有可能，Android删除了重要通知的偷窥功能——对此一无所知——或者定制OEM生产商重新设计了它的UI，认为这种偷窥是不可取的

Uri defaultSoundUri= RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);

        String channelID="channelID";
        String channelName = "channelName";

        NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
        NotificationCompat.Builder notificationBuilder;

        Intent notifyIntent = new Intent(this, MainActivity.class);

        notifyIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP |
                Intent.FLAG_ACTIVITY_SINGLE_TOP);

        PendingIntent notifyPendingIntent = PendingIntent.getActivity(this, 0, notifyIntent, PendingIntent.FLAG_UPDATE_CURRENT);
        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
// Android 8.1.0 API27
            NotificationChannel notificationChannel = new NotificationChannel(channelID, channelName, notificationManager.IMPORTANCE_HIGH);
notificationManager.createNotificationChannel(notificationChannel);

            notificationBuilder = new NotificationCompat.Builder(getApplicationContext(), channelID);

            notificationBuilder
                    .setSmallIcon(R.drawable.ic_add_post)
                    .setContentTitle("some title")
                    .setContentText("some message")
                    .setAutoCancel(true)
                    .setSound(defaultSoundUri)
                    .setVibrate(new long[]{1000, 1000})
                    .setLights(Color.BLUE, 1,1)
                    .setShowWhen(true)
                    .setContentIntent(notifyPendingIntent);
            notificationManager.notify("do_not1",0 /* ID of notification */, notificationBuilder.build());
        } else {

            notificationBuilder = new NotificationCompat.Builder(getApplicationContext());

            notificationBuilder
                    .setSmallIcon(R.drawable.ic_add_post)
                    .setContentTitle("some title")
                    .setContentText("some message")
                    .setAutoCancel(true)
                    .setSound(defaultSoundUri)
                    .setVibrate(new long[]{1000, 1000})
                    .setLights(Color.BLUE, 1,1)
                    .setPriority(NotificationManager.IMPORTANCE_HIGH)
                    .setContentIntent(notifyPendingIntent);
            notificationManager.notify("do_not1",0 /* ID of notification */, notificationBuilder.build());
        }