JDA attachment detection

so i ve recently started using JDA and i have no problem when detecting that a message was sent . But for some reason it doesn't work when it related to attachments .(yes ,i activated the intent in the discord bot settings ) and here is my code .

public void onMessageReceived(MessageReceivedEvent event) {
        if (event.getAuthor().isBot()) return; // Ignore messages from other bots
        suppressContentIntentWarning();
        List<Attachment> attachments = event.getMessage().getAttachments();
        TextChannel textChannel = event.getChannel().asTextChannel();

        for (Attachment attachment : attachments) {
            String fileName = attachment.getFileName();
            String fileExtension = attachment.getFileExtension();
            int size = attachment.getSize();

            if (attachment.isImage()) {
                textChannel.sendMessage("Image detected: " + fileName + ", size: " + size + " bytes").queue();
            } else if (attachment.isVideo()) {
                textChannel.sendMessage("Video detected: " + fileName + ", size: " + size + " bytes").queue();
            } else {
                textChannel.sendMessage("Other attachment detected: " + fileName + ", size: " + size + " bytes").queue();
            }
        }
    }

ps: i checked and attachments is always empty

Since you call suppressContentIntentWarning, I would assume you did not do what the warning said. You have to enable the intent in the dev portal and in JDA.

See the troubleshooting guide for details.