Retrofit: How to wait for response

Question

I have AsyncTask and the doInBackground method inside which, I sending POST request using Retrofit. My code looks like:

    //method of AsyncTask
    protected Boolean doInBackground(Void... params) {
        Retrofit restAdapter = new Retrofit.Builder()
                .baseUrl(Constants.ROOT_API_URL)
                .addConverterFactory(GsonConverterFactory.create())
                .build();
        IConstructSecureAPI service = restAdapter.create(IConstructSecureAPI.class);
        //request
        Call<JsonElement> result = service.getToken("TestUser", "pass", "password");
        result.enqueue(new Callback<JsonElement>() {
            @Override
            public void onResponse(Call<JsonElement> call, Response<JsonElement> response) {

            }

            @Override
            public void onFailure(Call<JsonElement> call, Throwable t) {

            }
        });

        return true;
    }

The problem is: Retrofit sending request asynchronously and while it, the doInBackground method returning the value. So I need to send a request in the same thread with all executions in the sequence. One by one. And returning from doInBackground occurs after the request finished. How can I send a request in the same thread using Retrofit?

Answer 1

The Call class has an execute() method that will make your call synchronously.

enqueue() is explicitly for making an asychronous call.

Answer 2

"Retrofit sending request asynchronously" which as @Tanis.7x mentioned, enqueue() is doing the asynchronous, so what could be a reason to put in AsyncTask ? (async in async ?)

You can simply put all retrofit code out from AsyncTask and onResponse is the callback that is waiting for your request call to be back, so you can do any UI update inside of this callback.

Answer 3

Use retrofit execute method instead of the enqueue method.

Because in asynctask doInbackground method is already creating a thread to execute the code in background. No need to create it again using retrofit enqueue .