如何在android中显示notifiction屏幕？

// 创建通知通道
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
    CharSequence name = "Channel Name";
    String description = "Channel Description";
    int importance = NotificationManager.IMPORTANCE_DEFAULT;
    NotificationChannel channel = new NotificationChannel("channel_id", name, importance);
    channel.setDescription(description);
    
    // 注册通知通道
    NotificationManager notificationManager = getSystemService(NotificationManager.class);
    notificationManager.createNotificationChannel(channel);
}

// 构建通知内容
NotificationCompat.Builder builder = new NotificationCompat.Builder(this, "channel_id")
        .setSmallIcon(R.drawable.notification_icon)
        .setContentTitle("Notification Title")
        .setContentText("Notification Content")
        .setPriority(NotificationCompat.PRIORITY_DEFAULT)
        .setAutoCancel(true);

// 发送通知
NotificationManagerCompat notificationManager = NotificationManagerCompat.from(this);
notificationManager.notify(notificationId, builder.build());