In debug mode, when I tap the alert, debug stopping here.

VoidCallBackListenerTab getTabListener() {
    return _tabListener!;
 }

With this exception in debug console

 ════════ Exception caught by gesture ════════
Null check operator used on a null value

I initialize the DropdownAlert without any parameter btw.

Thanks.

Sometimes we need to show a short message to the user, such as showing "Item deleted successfully" or "No more items", these messages is very short that can be shown in one line, in this case we can pass this message in the 'title' only, there is no need to the 'message' parameter.

I tried passing [null] and [empty string] to the 'message' parameter, but the title then would be shown in the upper part of the alert, if the 'message' parameter been optional, title must be centered vertically in the alert.

Hi @vantuan88291 thank for your package.

please review unit test here and fix some issue can't render because timer not init

@override
  void dispose() {
    super.dispose();
    _controller?.dispose();
    _controller = null;
    _timer!.cancel();
    _timerRelay!.cancel();
  }

I just imported package. Trying to use like this:

..other imports import 'package:flutter_dropdown_alert/alert_controller.dart'; ... onPressed: () { if (myoption['id'] == currentquestion.answer) { AlertController.show( "Title", "message here!", TypeAlert.success); } else { AlertController.show( "Title", "message here!", TypeAlert.error, ); }

But I see an error like TypeAlert is not defined.

error: Undefined name 'TypeAlert'. (undefined_identifier at [test1] lib/quiz_brain.dart:406)