Cross-Platform Data Binding Switch Demo

Embarcadero

vor 2 Jahren

If you’re looking for a quick and easy way to update an in-memory data table, the Update Switch Demo is the perfect solution. Built in Delphi, this cross-platform application is designed to work on Android, iOS, macOS, Windows, and Linux. With a single code base and single UI, it’s easy to keep your data updated across all your devices. Plus, the Live Bindings feature makes it super simple to update your data when a switch control changes. So if you need a fast and reliable way to keep your data up-to-date, the Update Switch Demo is the perfect tool for the job.

Download the full cross-platform data binding switch source code on Github.

This demo is part of over 100 cross-platform demos with everything from camera demos to emoji demos and painting demos.

Inhaltsverzeichnis

What is a switch button in software development?

switch button is a graphical control element that allows the user to switch between different options. It is typically used to switch between different views or modes in a software application. For example, a switch button could be used to switch between the “design” and “code” views in a web development IDE. Switch buttons are also commonly used to switch between different sets of options in a settings menu. For example, a switch button could be used totoggle between different display modes (e.g., landscape and portrait). In general, switch buttons provide a quick and convenient way for users to switch between different options in a software application.

Screenshot

What does the source code look like?

unit Unit1;

interface

uses
  System.SysUtils, System.Types, System.UITypes, System.Classes, System.Variants,
  FMX.Types, FMX.Controls, FMX.Forms, FMX.Graphics, FMX.Dialogs,
  FireDAC.Stan.Intf, FireDAC.Stan.Option, FireDAC.Stan.Param,
  FireDAC.Stan.Error, FireDAC.DatS, FireDAC.Phys.Intf, FireDAC.DApt.Intf,
  FireDAC.Stan.StorageBin, Data.Bind.EngExt, Fmx.Bind.DBEngExt, System.Rtti,
  System.Bindings.Outputs, Fmx.Bind.Editors, FMX.StdCtrls,
  Data.Bind.Components, Data.Bind.DBScope, Data.DB,
  FireDAC.Comp.DataSet, FireDAC.Comp.Client, FMX.Effects,
  FMX.Controls.Presentation;

type
  TForm1 = class(TForm)
    MaterialOxfordBlueSB: TStyleBook;
    ToolBar1: TToolBar;
    ShadowEffect4: TShadowEffect;
    Label1: TLabel;
    Label2: TLabel;
<strong>    FDMemTable1: TFDMemTable;
    BindSourceDB1: TBindSourceDB;
    BindingsList1: TBindingsList;
    LinkPropertyToFieldText: TLinkPropertyToField;
    Switch1: TSwitch;
    LinkControlToField2: TLinkControlToField;</strong>
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.fmx}

end.

unit Unit1;

interface

uses

System.SysUtils, System.Types, System.UITypes, System.Klassen, System.Variants,

FMX.Types, FMX.Controls, FMX.Forms, FMX.Graphics, FMX.Dialogs,

FireDAC.Stan.Intf, FireDAC.Stan.Option, FireDAC.Stan.Param,

FireDAC.Stan.Error, FireDAC.DatS, FireDAC.Phys.Intf, FireDAC.DApt.Intf,

FireDAC.Stan.StorageBin, Data.Bind.EngExt, Fmx.Bind.DBEngExt, System.Rtti,

System.Bindings.Outputs, Fmx.Bind.Editors, FMX.StdCtrls,

Data.Bind.Komponenten, Data.Bind.DBScope, Data.DB,

FireDAC.Comp.DataSet, FireDAC.Comp.Client, FMX.Effects,

FMX.Controls.Presentation;

type

TForm1 = Klasse(TForm)

MaterialOxfordBlueSB: TStyleBook;

ToolBar1: TToolBar;

ShadowEffect4: TShadowEffect;

Label1: TLabel;

Label2: TLabel;

<strong> FDMemTable1: TFDMemTable;

BindSourceDB1: TBindSourceDB;

BindingsList1: TBindingsList;

LinkPropertyToFieldText: TLinkPropertyToField;

Switch1: TSwitch;

LinkControlToField2: TLinkControlToField;</strong>

private

{ Private declarations }

public

{ Public declarations }

end;

var

Form1: TForm1;

implementation

{$R *.fmx}

end.

What does the data bindings look like?

What do the Form objects control code look like?

  object BindSourceDB1: TBindSourceDB
    DataSet = FDMemTable1
    ScopeMappings = &lt;&gt;
    Left = 144
    Top = 224
  end
  object BindingsList1: TBindingsList
    Methods = &lt;&gt;
    OutputConverters = &lt;&gt;
    Left = 20
    Top = 5
    object LinkPropertyToFieldText: TLinkPropertyToField
      Category = 'Quick Bindings'
      DataSource = BindSourceDB1
      FieldName = 'Value'
      Component = Label2
      ComponentProperty = 'Text'
    end
    object LinkControlToField2: TLinkControlToField
      Category = 'Quick Bindings'
      DataSource = BindSourceDB1
      FieldName = 'Value'
      Control = Switch1
      Track = True
    end
  end

object BindSourceDB1: TBindSourceDB

DataSet = FDMemTable1

ScopeMappings = <>

Left = 144

Top = 224

end

object BindingsList1: TBindingsList

Methods = <>

OutputConverters = <>

Left = 20

Top = 5

object LinkPropertyToFieldText: TLinkPropertyToField

Category = 'Quick Bindings'

DataSource = BindSourceDB1

FieldName = 'Value'

Component = Label2

ComponentProperty = 'Text'

end

object LinkControlToField2: TLinkControlToField

Category = 'Quick Bindings'

DataSource = BindSourceDB1

FieldName = 'Value'

Control = Switch1

Track = True

end

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