Handling inline keyboard callbacks in a Telegram bot

Other Questions Telegram bot
1

I’m trying to create a Telegram bot using the pengrad/telegram-bot-api library. I’ve set up an inline keyboard with a button, but I’m not sure how to handle the callback when the button is pressed. Here’s what I’ve done so far:

void requestAdminApproval(UserInfo user) {
    AdminUser admin = adminService.getMainAdmin();
    String message = String.format("Approve %s %s as admin?", user.getFirstName(), user.getLastName());
    
    InlineKeyboardButton approveButton = new InlineKeyboardButton("Approve").callbackData(user.getId());
    InlineKeyboardMarkup keyboard = new InlineKeyboardMarkup(new InlineKeyboardButton[]{approveButton});
    
    SendMessage approvalRequest = new SendMessage(admin.getChatId(), message).replyMarkup(keyboard);
    botInstance.execute(approvalRequest);
}

This sends a message with an inline button, but I don’t know how to process the callback when the button is clicked. Can someone explain how to capture and handle the callback data? Thanks!

2

To handle the callback when the button is pressed, you’ll need to override the onUpdateReceived method in your bot class. Here’s how you can do it:

@Override
public void onUpdateReceived(Update update) {
    if (update.callbackQuery() != null) {
        String userId = update.callbackQuery().data();
        // Process the user approval here
        adminService.approveUser(userId);
        
        // Acknowledge the callback query
        AnswerCallbackQuery answer = new AnswerCallbackQuery(update.callbackQuery().id());
        botInstance.execute(answer);
        
        // Optionally, send a confirmation message
        SendMessage confirmationMsg = new SendMessage(update.callbackQuery().message().chat().id(), "User approved successfully.");
        botInstance.execute(confirmationMsg);
    }
}

This code checks for callback queries, processes the approval, and sends a confirmation. Make sure to implement proper error handling and logging in a production environment.

3

hey sophiac, i’ve dealt with this before. you need to implement the onUpdateReceived method in your bot class. check for CallbackQuery there:

if (update.callbackQuery() != null) {
String data = update.callbackQuery().data();
// handle the callback data here
}

don’t forget to call answerCallbackQuery to stop the loading animation. Good luck!

4

I’ve worked with the pengrad/telegram-bot-api library before, and handling callback queries can be a bit tricky at first. Here’s how I approached it:

In your main bot class, you’ll need to override the onUpdateReceived method. This method gets called whenever your bot receives any type of update, including callback queries.

Inside onUpdateReceived, check if the update is a CallbackQuery:

if (update.callbackQuery() != null) {
String callbackData = update.callbackQuery().data();
// Process the callback data here
}

The callbackData will contain the user.getId() you set earlier. You can then use this to approve the user or perform any other action.

Remember to acknowledge the callback query by calling answerCallbackQuery. This prevents the button from showing a loading state indefinitely.

Hope this helps! Let me know if you need any clarification on implementing this.