如何设置通知的标题和内容？

Question

我正在尝试在收到新消息时向用户发送通知。

我可以发送通知，但我在自定义通知时遇到了一些问题。

这是我创建 notificationChannel 的代码：

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

            NotificationChannel notificationChannel = new NotificationChannel(NOTIFICATION_CHANNEL_ID, "NotificationName",
                    NotificationManager.IMPORTANCE_HIGH);

            notificationChannel.setDescription("Test channel");

            notificationChannel.setVibrationPattern(new long[]{0, 1000, 500, 2000});
            notificationChannel.enableVibration(true);
            notificationChannel.setShowBadge(true);

            notificationManager.createNotificationChannel(notificationChannel);
        }
        NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this, NOTIFICATION_CHANNEL_ID);

这是创建通知的代码：

notificationBuilder.setAutoCancel(true)
                .setVibrate((new long[]{0, 1000, 500, 2000}))
                .setStyle((new NotificationCompat.InboxStyle() ) )
                .setWhen(System.currentTimeMillis())
                .setSmallIcon(R.mipmap.ic_notification)
                .setContentTitle("Unread message")
                .setContentText("You have an unread message")
                .setOnlyAlertOnce(true)
                .setContentInfo("Info");

        Intent intent = new Intent(this, bildirimDeneme.class);
        PendingIntent contentIntent = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
        notificationBuilder.setContentIntent(contentIntent);

        notificationManager.notify(new Random().nextInt(), notificationBuilder.build());

我将内容文本设置为 "You have an unread message"。但通知显示如下 [1]：https://hizliresim.com/EO6rVB

所以完全没有内容。

Answer 1

我猜你必须像这样将内容设置为 InboxStyle:

notificationBuilder.setStyle(new Notification.InboxStyle()
     .setContentTitle("Title")
     .addLine("Hello")
     .addLine("World")
     .setSummaryText("+3 more"))

Answer 2

您也可以 "play" 使用 setStyle 方法显示大文本并让通知 API 完成工作

NotificationCompat.Builder builder = new NotificationCompat.Builder(context, channelId)
            .setSmallIcon(R.drawable.ic_cloud_upload)
            .setContentTitle(context.getString(R.string.notif_title))
            .setContentText(context.getString(R.string.notif_subject))
            .setStyle(new NotificationCompat.BigTextStyle()
                    .bigText(*your_message*))
            .setPriority(NotificationCompat.PRIORITY_HIGH)
            .setVibrate(new long[0])
            .setAutoCancel(true);

如何设置通知的标题和内容？

How to set Title & Content of Notification?

java

android

android-notifications