unit Form.Main;

interface

uses
  System.SysUtils, System.Types, System.UITypes, System.Classes, System.Variants,
  FMX.Types, FMX.Controls, FMX.Forms, FMX.Graphics, FMX.Dialogs, FMX.StdCtrls,
  FMX.Controls.Presentation;

type
  TForm1 = class(TForm)
    ToolBar1: TToolBar;
    toggleStatusBarButton: TSpeedButton;
    procedure toggleStatusBarButtonClick(Sender: TObject);
  private
    { Private-Deklarationen }
  public
    { Public-Deklarationen }
  end;

var
  Form1: TForm1;

implementation

{$R *.fmx}

procedure TForm1.toggleStatusBarButtonClick(Sender: TObject);
begin
  if Self.BorderStyle = TFmxFormBorderStyle.None then
    Self.BorderStyle := TFmxFormBorderStyle.Sizeable
  else
    Self.BorderStyle := TFmxFormBorderStyle.None;
end;

end.

uses
  FMX.Helpers.Android;

procedure TForm1.toggleStatusBarButtonClick( Sender: TObject );
begin
  CallInUIThread(
    procedure
    begin
      if Self.BorderStyle = TFmxFormBorderStyle.None then
        Self.BorderStyle := TFmxFormBorderStyle.Sizeable
      else
        Self.BorderStyle := TFmxFormBorderStyle.None;
    end );
end;