How to call multiple requests at the same time in Retrofit 2

Question

I have 2 different api, and I want to call them at the same time. How can I do this ?

Thanks!

Take a look at `RxJava`'s `zip` operator (you can for example define your Retrofit api methods to return `Observable`s) — John O'Reilly, Oct 13 '17 at 15:16

score 1 · Answer 1 · answered Oct 13 '17 at 15:42

1

You could use enqueue method of retrofit2 for asynchronously calling multiple request at the same time.

Here is the documentation for the enqueue:

/**
* Asynchronously send the request and notify {@code callback} of its response or if an error
* occurred talking to the server, creating the request, or processing the response.
*/
void enqueue(Callback callback);

Here is the pseudo code how you could do that:

Call<MyResponse> call = retroService.getSomeData();
call.enqueue(new Callback<MyResponse>() {
  @Override
  public void onResponse(
  public void onFailure(
});

answered Oct 13 '17 at 15:42

Haresh Chaudhary

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This doesn't solve the problem. This is calling A REQUEST and waiting for the result. – Maher Nabil Feb 26 '18 at 12:20
No it doesnt wait for the Response, Purpose of enqueue is Asynchronous it doesnt wait for the result to come, next consecutive statements are executed. – parvez rafi Jan 01 '20 at 11:03

score -1 · Answer 2 · answered Oct 13 '17 at 15:23

Just create an observer that pass parameters of the two servers. Help the code below

OkHttpClient okHttpClient = new OkHttpClient().newBuilder().addInterceptor(new Interceptor() {
        @Override
        public okhttp3.Response intercept(Chain chain) throws IOException {
            Request originalRequest = chain.request();

            Request.Builder builder = originalRequest.newBuilder().header("Authorization",
                    Credentials.basic("aUsername", "aPassword"));

            Request newRequest = builder.build();
            return chain.proceed(newRequest);
        }
    }).build();

Retrofit retrofit = new Retrofit.Builder()
.baseUrl("https://api.example.com")
.client(okHttpClient)
.build();

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How to call multiple requests at the same time in Retrofit 2

2 Answers2