Question

我成功实现了我的 php应用服务器。我的Android设备可以接收带有数据有效负载的通知。现在，我想通过datheayload从设备向特定用户设备发送通知。

我的案例：访客来见员工接待只通知员工。

我是否需要实施xmpp服务器？或者我的php服务器也可以处理这种机制？我尝试引用xmpp服务器https://github.com/carlosCharz/fcmxmppserver。但是库被弃用了。任何帮助将不胜感激

Answer 1

基本网址：https://fcm.googleapis.com - 404在此服务器上找不到请求的网址/。

Answer 2

您需要向特定用户设备发送通知的只是设备令牌。

所以你可以用两种方式做到这一点：

向服务器询问具体令牌并通过firebase从设备发送请求
要求服务器向某些设备发送请求。

所以你必须在服务器上持有设备令牌。如果您通过与用户帐户的连接收集此信息，则可以将通知从一个用户发送到另一个用户

有一个code snippet通过OkHttp库从android应用程序发送通知设备：

MediaType JSON = MediaType.parse("application/json; charset=utf-8");

OkHttpClient client = new OkHttpClient();

//in JSON field "to" is target device token.
//you can get it so: FirebaseInstanceId.getInstance().getToken();
//but, ofcause, you must get it from i.e. server
String json = "{ 
   \"notification\": {
    \"title\": \"news\",
    \"text\": \"newsTExt\",
     \"click_action\": \"test\"
  },
    \"data\": {
    \"keyname\": \"any value\"
    },
  \"to\" : \"dAQilNw:APA91IFd666h7WVSlAOyS-WraSrGv_IRZM\"
}"

String keyFromConsole = ...;//here is key from firebase console (Settings-prohect settings-CLOUD MESSAGING-server key)

RequestBody body = RequestBody.create(JSON, json);
Request request = new Request.Builder()
      .url("https://fcm.googleapis.com/fcm/send")
      .addHeader("Authorization", "key=" + keyFromConsole)
      .addHeader("ContentType", "application/json")
      .post(body)
      .build();


Response response = client.newCall(request).enqueue(new Callback() {

  @Override public void onFailure(Call call, IOException e) {
       e.printStackTrace();
  }

  @Override public void onResponse(Call call, Response response) throws IOException {
    System.out.println(response.body().string());
  }
});

Answer 3

您不需要设备令牌。您不需要实现xmpp协议。订阅设备到主题。使用Retrofit从一台设备向其他设备发送通知。

public void onClick(View view) {

    HttpLoggingInterceptor logging = new HttpLoggingInterceptor();
    logging.setLevel(HttpLoggingInterceptor.Level.BODY);

    OkHttpClient.Builder httpClient = new OkHttpClient.Builder();
    httpClient.addInterceptor(new Interceptor() {
        @Override
        public okhttp3.Response intercept(Chain chain) throws IOException {
            Request original = chain.request();

            // Request customization: add request headers
            Request.Builder requestBuilder = original.newBuilder()
                    .header("Authorization", "key=legacy server key from FB console"); // <-- this is the important line
            Request request = requestBuilder.build();
            return chain.proceed(request);
        }
    });

    httpClient.addInterceptor(logging);
    OkHttpClient client = httpClient.build();

    Retrofit retrofit = new Retrofit.Builder()
            .baseUrl("https://fcm.googleapis.com")//url of FCM message server
            .client(client)
            .addConverterFactory(GsonConverterFactory.create())//use for convert JSON file into object
            .build();

    // prepare call in Retrofit 2.0
    FirebaseAPI firebaseAPI = retrofit.create(FirebaseAPI.class);

    //for messaging server
    NotifyData notifydata = new NotifyData("Notification title","Notification body");

Call<Message> call2 = firebaseAPI.sendMessage(new Message("/topics/news", notifydata));

    call2.enqueue(new Callback<Message>() {
        @Override
        public void onResponse(Call<Message> call, Response<Message> response) {

            Log.d("Response ", "onResponse");
            t1.setText("Notification sent");

        }

        @Override
        public void onFailure(Call<Message> call, Throwable t) {
            Log.d("Response ", "onFailure");
            t1.setText("Notification failure");
        }
    });
}

的POJO

public class Message {
String to;
NotifyData notification;

public Message(String to, NotifyData notification) {
    this.to = to;
    this.notification = notification;
}

}

和

public class NotifyData {
String title;
String body;

public NotifyData(String title, String body ) {

    this.title = title;
    this.body = body;
}

}

和FirebaseAPI

public interface FirebaseAPI {

@POST("/fcm/send")
Call<Message> sendMessage(@Body Message message);

}

从Android设备向特定用户发送Firebase通知

3 个答案: