android - NotificationCompat.BigTextStyle 内容在新通知中消失

Question

    String ns = Context.NOTIFICATION_SERVICE;
        NotificationManager mNotificationManager = (NotificationManager) this.getSystemService(ns);
        int icon = R.drawable.ic_launcher;
        CharSequence tickerText = title;
        long when = System.currentTimeMillis();             


        Uri alarmSound = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
        if(alarmSound == null){
              alarmSound = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_RINGTONE);
            if(alarmSound == null){
                alarmSound = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
            }
        }           

        Intent intent = new Intent();
        PendingIntent pendingIntent 
        = PendingIntent.getActivity(this, 0, intent, 0);    

        NotificationCompat.BigTextStyle bigxtstyle =
        new NotificationCompat.BigTextStyle();          
        bigxtstyle.bigText(text);               
        bigxtstyle.setBigContentTitle(title);


        NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(this)
            .setStyle(bigxtstyle)
            .setSmallIcon(icon)
            .setAutoCancel(true)

            .setSound(alarmSound)
            .setDeleteIntent(pendingIntent)                     
            .setContentIntent(PendingIntent.getActivity(this, 0, new Intent(), 0));     


        Notification noti = mBuilder.build();


        mNotificationManager.notify(notificationid++, noti);

此代码有效，并显示带有自动换行的广告文本。但是，当后续通知发生时，先前的通知会丢失其文本。任何人都可以帮助解决这个问题吗？这可能是我设置不正确，我是 android api 的新手。

Answer 1

Android 默认只显示一个展开的通知。您的通知不会丢失其内容，它只是被压缩并且只显示正常的单行内容。但似乎您没有指定它，因此压缩通知为空。

您可以使用 setContentTitle()和 setContentText()设置单行文本。