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iOS. При вызове TfgVerticalScrollBox.DeleteControls приложение падает

https://forum.fgx-native.com/tickets/closed/11_bugs/ios-%D0%BF%D1%80%D0%B8-%D0%B2%D1%8B%D0%B7%D0%BE%D0%B2%D0%B5-tfgverticalscrollboxdeletecontrols-%D0%BF%D1%80%D0%B8%D0%BB%D0%BE%D0%B6%D0%B5%D0%BD%D0%B8%D0%B5-%D0%BF%D0%B0%D0%B4%D0%B0%D0%B5%D1%82-r402/

By Roman

  • Status: Closed
  • Priority: Critical
  • Resolution: Test case error
  • Platform: iOS
  • Affects version 1.18.5.0

Добрый день!

При вызове TfgVerticalScrollBox.DeleteControls компонентом, который расположен на TfgVerticalScrollBox, приложение падает.

Ранее ошибка не возникала.

На Android работает без ошибок.

Демо, воспроизводящее проблему, представлено во вложении.

VerticalScrollboxDeleteControlsDemo.zip

    •
    https://forum.fgx-native.com/tickets/closed/11_bugs/ios-%D0%BF%D1%80%D0%B8-%D0%B2%D1%8B%D0%B7%D0%BE%D0%B2%D0%B5-tfgverticalscrollboxdeletecontrols-%D0%BF%D1%80%D0%B8%D0%BB%D0%BE%D0%B6%D0%B5%D0%BD%D0%B8%D0%B5-%D0%BF%D0%B0%D0%B4%D0%B0%D0%B5%D1%82-r402/

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    Proficient

    Viktor Akselrod

    Administrators
    • Administrators

    Здравствуйте.

    В самом демо есть логическая ошибка - вы удаляете кнопку внутри ее обработчика, что и приводит к исключению. 

    Чтобы избежать проблемы, вызывайте код обновления контента (и соответственно удаление самой кнопки) асинхронно. 

    procedure TFormMain.OnButtonTap(Sender: TObject);
begin
  TThread.ForceQueue(TThread.Current,
    procedure
    begin
      VerticalScrollBox1.ScrollTop(false);

      if VerticalScrollBox1.ControlsCount>0 then
      VerticalScrollBox1.DeleteControls;

      DisplayContent;
    end);
end;

     

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