Android 通知多行

如何使长通知多行。我正在使用以下代码段，但它不起作用：

NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(context)
  .setContentTitle(title)
  .setSmallIcon(R.drawable.icon)
  .setStyle(new NotificationCompat.BigTextStyle().bigText(message))
  .setContentText(message)
  .setContentIntent(pIntent);

return mBuilder.build();

添加以下内容：

NotificationCompat.Builder builder = new NotificationCompat.Builder(
            context);
    Notification notification = builder.setContentIntent(contentIntent)
            .setSmallIcon(icon).setTicker(appname).setWhen(0)
            .setAutoCancel(true).setContentTitle(appname)
            .setStyle(new NotificationCompat.BigTextStyle().bigText(message))
            .setContentText(message).build();

    notificationManager.notify(0, notification);

---

另请检查：

尝试使用android Oreo通知频道id执行此代码

public static int id = 0;
private void sendNotification(String messageBody) {

    Log.d("FCMID","id : " + id);
    Intent intent = new Intent(this, Main2Activity.class);
    intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
    PendingIntent pendingIntent = PendingIntent.getActivity(this, 0 , intent,PendingIntent.FLAG_ONE_SHOT);

    String channelId = "1";
    Uri defaultSoundUri= RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
    NotificationCompat.Builder notificationBuilder =
            new NotificationCompat.Builder(this, channelId)
            .setSmallIcon(R.drawable.ic_notification)
            .setStyle(new NotificationCompat.BigTextStyle().bigText(messageBody))
            .setContentTitle("Piml Sid")
            .setContentText(messageBody)
            .setAutoCancel(true)
            .setSound(defaultSoundUri)
            .setContentIntent(pendingIntent);

    NotificationManager notificationManager =
            (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

    // Since android Oreo notification channel is needed.
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
        NotificationChannel channel = new NotificationChannel(channelId,
                "Spike Bot",
                NotificationManager.IMPORTANCE_DEFAULT);
        notificationManager.createNotificationChannel(channel);
    }
    id ++;
   notificationManager.notify(id /* ID of notification */, notificationBuilder.build());
}

---

在

通知compat.Builder

中添加

.setStyle(NotificationCompat.BigTextStyle().bigText(body))
.setContentText(body) 

---

alnog with

.setContentText（body）

您针对的是哪个sdk版本？4.1+操作系统支持多行通知。查看我提供的答案部分中的链接。工作，这里的详细信息：似乎链接已关闭。事情是这样的：你能解释一下你添加了哪些行吗？首先，行的顺序与问题中的顺序不同，其次，您可以使用英语解释您的解决方案，而不仅仅是编写未格式化的无序代码。

setStyle（new Notification.BigTextStyle（）

的代码必须是

setStyle（new NotificationCompat.BigTextStyle（））

。否则它会抛出一个错误，因为

BigTextStyle无法转换为Style

。setStyle被调用了两次。这是错误的吗？如果不是，这是如何工作的？不能使用

BigTextStyle

两次，第二次将覆盖第一次。标题、上下文、BigText这些可以是不同的值。如果不确定，则显示大文本n被展开或用户自己展开

public static int id = 0;
private void sendNotification(String messageBody) {

    Log.d("FCMID","id : " + id);
    Intent intent = new Intent(this, Main2Activity.class);
    intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
    PendingIntent pendingIntent = PendingIntent.getActivity(this, 0 , intent,PendingIntent.FLAG_ONE_SHOT);

    String channelId = "1";
    Uri defaultSoundUri= RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
    NotificationCompat.Builder notificationBuilder =
            new NotificationCompat.Builder(this, channelId)
            .setSmallIcon(R.drawable.ic_notification)
            .setStyle(new NotificationCompat.BigTextStyle().bigText(messageBody))
            .setContentTitle("Piml Sid")
            .setContentText(messageBody)
            .setAutoCancel(true)
            .setSound(defaultSoundUri)
            .setContentIntent(pendingIntent);

    NotificationManager notificationManager =
            (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

    // Since android Oreo notification channel is needed.
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
        NotificationChannel channel = new NotificationChannel(channelId,
                "Spike Bot",
                NotificationManager.IMPORTANCE_DEFAULT);
        notificationManager.createNotificationChannel(channel);
    }
    id ++;
   notificationManager.notify(id /* ID of notification */, notificationBuilder.build());
}

.setStyle(NotificationCompat.BigTextStyle().bigText(body))
.setContentText(body)