KeyEventResult

Hi,

When using the example and then type in the search DropdownFormField this error message is produced. Each keystroke produces this error.

Using Chrome as the browser.

Paul Brassington

════════ Exception caught by services library ══════════════════════════════════
The following TypeErrorImpl was thrown while processing the key message handler:
Expected a value of type 'KeyEventResult', but got one of type 'bool'

[SaharatPr]

me too

[Adeel-Sultan]

@SaharatPr @HASHCAPDOTCOM @crawlinknetworks @namdegnah anyone found solution ?
please let us know

[siddiquisahil02]

@Adeel-Sultan @SaharatPr @HASHCAPDOTCOM Yea, I found a solution, but you'll have to change some lines in the package files as the focus widget, onKey is going to be deprecated soon, so use onKeyEvent and change some lines of a code in the package itself.

in the dropdown.dart (implementation file of DropdownFormField widget) file of the package, replace _onKeyPressed function with this code

_onKeyPressed(KeyEvent event) {
    //print('_onKeyPressed : ${event.character}');
    if (event.logicalKey==LogicalKeyboardKey.enter) {
      if (_searchFocusNode.hasFocus) {
        _toggleOverlay();
      } else {
        _toggleOverlay();
      }
      //return false;
      return KeyEventResult.ignored;
    } else if (event.logicalKey==LogicalKeyboardKey.escape) {
      _removeOverlay();
      return KeyEventResult.handled;
      //return true;
    } else if (event.logicalKey==LogicalKeyboardKey.arrowDown) {
      int v = _listItemFocusedPosition;
      v++;
      if (v >= _options!.length) v = 0;
      _listItemFocusedPosition = v;
      _listItemsValueNotifier.value = List<T>.from(_options ?? []);
      //return true;
      return KeyEventResult.handled;
    } else if (event.logicalKey==LogicalKeyboardKey.arrowUp) {
      int v = _listItemFocusedPosition;
      v--;
      if (v < 0) v = _options!.length - 1;
      _listItemFocusedPosition = v;
      _listItemsValueNotifier.value = List<T>.from(_options ?? []);
      //return true;
      return KeyEventResult.handled;
    }
    return KeyEventResult.ignored;
    //return false;
  }

And RawKeyEvent is now will be replaced by KeyEvent and don't forget to restart/reinstall the application after saving these changes, for these to take effect.

[Adeel-Sultan]

@Adeel-Sultan @SaharatPr @HASHCAPDOTCOM Yea, I found a solution, but you'll have to change some lines in the package files as the focus widget, onKey is going to be deprecated soon, so use onKeyEvent and change some lines of a code in the package itself.

in the dropdown.dart (implementation file of DropdownFormField widget) file of the package, replace _onKeyPressed function with this code

_onKeyPressed(KeyEvent event) {
    //print('_onKeyPressed : ${event.character}');
    if (event.logicalKey==LogicalKeyboardKey.enter) {
      if (_searchFocusNode.hasFocus) {
        _toggleOverlay();
      } else {
        _toggleOverlay();
      }
      //return false;
      return KeyEventResult.ignored;
    } else if (event.logicalKey==LogicalKeyboardKey.escape) {
      _removeOverlay();
      return KeyEventResult.handled;
      //return true;
    } else if (event.logicalKey==LogicalKeyboardKey.arrowDown) {
      int v = _listItemFocusedPosition;
      v++;
      if (v >= _options!.length) v = 0;
      _listItemFocusedPosition = v;
      _listItemsValueNotifier.value = List<T>.from(_options ?? []);
      //return true;
      return KeyEventResult.handled;
    } else if (event.logicalKey==LogicalKeyboardKey.arrowUp) {
      int v = _listItemFocusedPosition;
      v--;
      if (v < 0) v = _options!.length - 1;
      _listItemFocusedPosition = v;
      _listItemsValueNotifier.value = List<T>.from(_options ?? []);
      //return true;
      return KeyEventResult.handled;
    }
    return KeyEventResult.ignored;
    //return false;
  }

And RawKeyEvent is now will be replaced by KeyEvent and don't forget to restart/reinstall the application after saving these changes, for these to take effect.

@HASHCAPDOTCOM could you please change this in file and check if work, updates all files and update library too?

[siddiquisahil02]

@HASHCAPDOTCOM could you please change this in file and check if work, updates all files and update library too?

Yes, I have verified, it is working now and I have also created a pull request with all the changes.

[siddiquisahil02]

@Adeel-Sultan @SaharatPr @namdegnah I just created my own package for Dropdown Text Search with keyboard support, feel free to check it out.
Thank you

dropdown_text_search: ^0.0.1

[Bes79]

same issue