Android 8.x通知:当我的应用程序打开时，如何避免应用程序上的通知淡入/淡出？

// 创建通知渠道
private void createNotificationChannel() {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
        CharSequence name = "My Channel";
        String description = "My Channel Description";
        int importance = NotificationManager.IMPORTANCE_DEFAULT;
        NotificationChannel channel = new NotificationChannel("channel_id", name, importance);
        channel.setDescription(description);
        
        // 设置通知渠道的其他属性，如声音、震动等
        // channel.setSound(soundUri, audioAttributes);
        // channel.enableVibration(true);
        
        NotificationManager notificationManager = getSystemService(NotificationManager.class);
        notificationManager.createNotificationChannel(channel);
    }
}

// 发送通知
private void sendNotification() {
    NotificationCompat.Builder builder = new NotificationCompat.Builder(this, "channel_id")
            .setSmallIcon(R.drawable.notification_icon)
            .setContentTitle("My Notification")
            .setContentText("This is a notification from my app")
            .setPriority(NotificationCompat.PRIORITY_DEFAULT);
    
    NotificationManagerCompat notificationManager = NotificationManagerCompat.from(this);
    notificationManager.notify(notificationId, builder.build());
}