如何向多个安卓设备发送推送通知

Question

我在link 中关注了如何使用 GCM 发送推送通知，我设法从应用程序发送和接收通知，但是，我无法接收来自不同 Android 设备的通知，该设备仅发送和接受自己。我需要将它发送到使用相同项目 ID 的所有设备吗？ 这是我用过的代码

unit Unit1;

interface

uses
    System.SysUtils, System.Classes, GCMNotification, IndyPeerImpl,
   IdBaseComponent, IdComponent, IdTCPConnection,
  IdTCPClient, IdHTTP, IdIOHandler, IdIOHandlerSocket, IdIOHandlerStack, IdSSL, IdSSLOpenSSL
  ;

type
  TDataModule1 = class(TDataModule)
  procedure DataModuleCreate(Sender: TObject);
  procedure DataModuleDestroy(Sender: TObject);
  private
    { Private declarations }
    {$IFDEF ANDROID}
    gcmn: TGCMNotification;
    {$ENDIF}
  public
    { Public declarations }
    function GetDeviceRegistrationId: string;
    function PushMessage(Pushmessage: string): string;
  end;

var
  DataModule1: TDataModule1;

  const
  YOUR_GCM_SENDERID = '1232010xxxxxx';
  YOUR_API_ID = 'AIzaSyBzvpTa-xxxxxxxxxxxxxxxxx';

implementation

{%CLASSGROUP 'FMX.Controls.TControl'}

{$R *.dfm}

procedure TDataModule1.DataModuleCreate(Sender: TObject);
var
  isRegistered : boolean;
begin

  isRegistered := true;
  {$IFDEF ANDROID}
  try
    gcmn := TGCMNotification.Create(self);
    gcmn.SenderID := YOUR_GCM_SENDERID;
    isRegistered := gcmn.DoRegister;
  except
  end;
  {$ENDIF}

end;

procedure TDataModule1.DataModuleDestroy(Sender: TObject);
begin
{$IFDEF ANDROID}
  gcmn.Free();
  {$ENDIF}
end;

function TDataModule1.GetDeviceRegistrationId: string;
begin
  {$IFDEF ANDROID}
  result := gcmn.RegistrationID;
  {$ELSE}
  result := 'Mobile Test';
  {$ENDIF}
end;

function TDataModule1.PushMessage(Pushmessage : string):string;
const
  sendUrl = 'https://android.googleapis.com/gcm/send';
var
  Params: TStringList;
  AuthHeader: STring;
  idHTTP: TIDHTTP;
  SSLIOHandler: TIdSSLIOHandlerSocketOpenSSL;
begin
  idHTTP := TIDHTTP.Create(nil);
  try
    SslIOHandler := TIdSSLIOHandlerSocketOpenSSL.Create(nil);
    idHTTP.IOHandler := SSLIOHandler;
    idHTTP.HTTPOptions := [];
    Params := TStringList.Create;
    try
      Params.Add('registration_id='+ GetDeviceRegistrationId());
      Params.Values['data.message'] := Pushmessage;
      idHTTP.Request.Host := sendUrl;
      AuthHeader := 'Authorization: key=' + YOUR_API_ID;
      idHTTP.Request.CustomHeaders.Add(AuthHeader);
      IdHTTP.Request.ContentType := 'application/x-www-form-urlencoded;charset=UTF-8';
      result := idHTTP.Post(sendUrl, Params);
    finally
      Params.Free;
    end;
  finally
    FreeAndNil(idHTTP);
  end;

end;
end.

这是按钮中的代码

DataModule1.PushMessage(Edit1.Text);

Answer 1

我不习惯 Delphi，但看起来你需要修改 PushMessage 方法。

在 Params.Add(...) 中将 registration_id 更改为 registration_ids 并确保 GetDeviceRegistrationId() 返回预期注册 ID 收件人的数组。