How to Make an HTTP Request with Android?

import android.os.Bundle;
import android.util.Log;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;
import androidx.appcompat.app.AppCompatActivity;
import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.toolbox.JsonObjectRequest;
import com.android.volley.toolbox.Volley;
import com.bumptech.glide.Glide;
import org.json.JSONException;
import org.json.JSONObject;

public class MainActivity extends AppCompatActivity {

    // member variable for holding the ImageView 
    // in which images will be loaded
    ImageView mDogImageView;
    Button nextDogButton;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // initialize the ImageView and the Button
        mDogImageView = findViewById(R.id.dogImageView);
        nextDogButton = findViewById(R.id.nextDogButton);

        // attaching on click listener to the button so that `loadDogImage()`
        // function is called everytime after clicking it.
        nextDogButton.setOnClickListener(View -> loadDogImage());

        // image of a dog will be loaded once at the start of the app
        loadDogImage();
    }

    // function for making a HTTP request using Volley and
    // inserting the image in the ImageView using Glide library
    private void loadDogImage() {

        // getting a new volley request queue for making new requests
        RequestQueue volleyQueue = Volley.newRequestQueue(MainActivity.this);
        // url of the api through which we get random dog images
        String url = "https://dog.ceo/api/breeds/image/random";

        // since the response we get from the api is in JSON, we 
        // need to use `JsonObjectRequest` for parsing the
        // request response
        JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(
            // we are using GET HTTP request method
            Request.Method.GET,
            // url we want to send the HTTP request to
            url,
            // this parameter is used to send a JSON object to the
            // server, since this is not required in our case,
            // we are keeping it `null`
            null,

            // lambda function for handling the case 
            // when the HTTP request succeeds
            (Response.Listener<JSONObject>) response -> {
                // get the image url from the JSON object
                String dogImageUrl;
                try {
                    dogImageUrl = response.getString("message");
                    // load the image into the ImageView using Glide.
                    Glide.with(MainActivity.this).load(dogImageUrl).into(mDogImageView);
                } catch (JSONException e) {
                    e.printStackTrace();
                }
            },

            // lambda function for handling the case 
            // when the HTTP request fails
            (Response.ErrorListener) error -> {
                // make a Toast telling the user 
                // that something went wrong
                Toast.makeText(MainActivity.this, "Some error occurred! Cannot fetch dog image", Toast.LENGTH_LONG).show();
                // log the error message in the error stream
                Log.e("MainActivity", "loadDogImage error: ${error.localizedMessage}");
            }
        );

        // add the json request object created above
        // to the Volley request queue
        volleyQueue.add(jsonObjectRequest);
    }
}