如何在Delphi-XE5 Firemonkey应用程序中关闭Android应用程序？

procedure TFormMain.FormCloseQuery(Sender: TObject; var CanClose: Boolean);
var
  msg: String;
begin
  msg := 'Do you really want to exit?';

  if messageDlg(msg,tmsgDlgType.mtConfirmation,[tmsgDlgBtn.mbYes,tmsgDlgBtn.mbNo],0) = mrNo then
    CanClose := false
  else
    CanClose := True; { FIXME: don't want to work on Android }
end;

它在Windows上运行完美.如果我选择“是”,申请将关闭.但是,应用程序不会在Android上关闭.我做错了什么？