java - Android-多行通知不起作用

Question

首先，我阅读了this并将这个简单的代码用于多个通知:

    public static void notifyMessage()
    {
        NotificationManager notificationManager = (NotificationManager) context
            .getSystemService(Context.NOTIFICATION_SERVICE);
     int notifyID = 1;
     NotificationCompat.Builder builder = new NotificationCompat.Builder(
            context);
    int numMessages = 0;
    builder.setSmallIcon(R.drawable.icon)
            .setContentTitle("Event tracker")
            .setContentText("Events received")
            .setNumber(++numMessages)
            .setWhen(System.currentTimeMillis()).setAutoCancel(true)
            .setDefaults(Notification.DEFAULT_ALL)
            .setStyle(new NotificationCompat.BigTextStyle()
            .bigText("bigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbigbig"));
    Notification notification = builder.build();
    notificationManager.notify(1, notification);

它正在工作。如果消息的长度大于通常的限制，它将显示“bigbig...”。
下一步，我想使用用户的消息显示在通知中。所以我将功能更改为:

      public static void notifyMessage(String message , boolean flashLed)
    {
        NotificationManager notificationManager = (NotificationManager) context
            .getSystemService(Context.NOTIFICATION_SERVICE);
     int notifyID = 1;
     NotificationCompat.Builder builder = new NotificationCompat.Builder(
            context);
    int numMessages = 0;
    builder.setSmallIcon(R.drawable.icon)
            .setContentTitle("Event tracker")
            .setContentText(message)
            .setNumber(++numMessages)
            .setWhen(System.currentTimeMillis()).setAutoCancel(true)
            .setDefaults(Notification.DEFAULT_ALL)
            .setStyle(new NotificationCompat.BigTextStyle()
            .bigText(message));
    if (flashLed)
    {
        builder.setLights(0xFFFF0000, 500, 500);
    }
    Notification notification = builder.build();
    notificationManager.notify(1, notification);
}

我试图显示消息 而不是“bigbigbig....”，但它总是显示简短的通知类型。我也试过这个:

  public static void notifyMessage(String message)
    {
        NotificationManager notificationManager = (NotificationManager) context
            .getSystemService(Context.NOTIFICATION_SERVICE);

     NotificationCompat.Builder builder = new NotificationCompat.Builder(
            context);
     NotificationCompat.InboxStyle inboxStyle =
                    new NotificationCompat.InboxStyle();
     String[] events = new String[4];
            // Sets a title for the Inbox in expanded layout
     events[0] = message.substring(0, 15);
     events[1] = message.substring(15, 35);
     events[2] = message.substring(35, 55);
     events[3] = message.substring(55, 75);
     inboxStyle.setBigContentTitle("Event tracker details:");

      // Moves events into the expanded layout
    for (int i=0; i < events.length; i++) {

       inboxStyle.addLine(events[i]);
    }
    builder.setSmallIcon(R.drawable.icon)
            .setContentTitle("Event tracker"")
            .setContentText("Events received")
            .setWhen(System.currentTimeMillis()).setAutoCancel(true)
            .setDefaults(Notification.DEFAULT_ALL)
            .setPriority(Notification.PRIORITY_MAX)
            .setStyle(inboxStyle);

    Notification notification = builder.build();
    notificationManager.notify(1, notification);
}

但是当新消息到达时应用程序崩溃。如何更改第二或第三个功能？

Answer 1

从 .setContentText("") 中删除内容

改为添加:

.setStyle(new NotificationCompat.BigTextStyle()
                                .bigText(message));

例子:

 NotificationCompat.Builder mBuilder =
                new NotificationCompat.Builder(this)
                        .setSmallIcon(GetNotificationIcon())
                        .setContentTitle(Constants.APP_NAME)
                        .setContentText("")
                        .setSound(uri)
                        .setVibrate(vibrate)
                        .setStyle(new NotificationCompat.BigTextStyle()
                                .bigText(message));