在用 Delphi 开发 Android ,iOS 等 平台的App 时消息发送与处理

unit Unit1;


interface

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




type
  TForm1 = class(TForm)
    Memo1: TMemo;
    Button1: TButton;
    procedure FormCreate(Sender: TObject);
    procedure FormDestroy(Sender: TObject);
    procedure Button1Click(Sender: TObject);
  private

    FMessageSender: TMessageSender;
  public
    procedure DefaultHandler(var Message); override;

  end;

var
  Form1: TForm1;

implementation

{$R *.fmx}


procedure TForm1.Button1Click(Sender: TObject);
begin
  FMessageSender.SendMessage(100, '我是通过消息发送过来的信息'); // 命令ID & 发送数据值
end;

procedure TForm1.DefaultHandler(var Message);
begin
  inherited;
  ShowMessage(TDispatchMessage(Message).MsgID.ToString());         // 收到的命令ID
  ShowMessage(TDispatchMessageWithValue<String>(Message).Value);   // 收到的数据值
end;



procedure TForm1.FormCreate(Sender: TObject);
begin
  FMessageSender := TMessageSender.Create();
  FMessageSender.Receiver := Self;
end;


procedure TForm1.FormDestroy(Sender: TObject);
begin
  FMessageSender.DisposeOf();
end;

end.