Fetch data from Api in android using Volley library

 what we learn

 recyclerview in android: we can fetch data from android and show the data in recyclerview.

add this two library in build gradle

implementation 'com.android.volley:volley:1.2.1'
implementation 'org.jsoup:jsoup:1.13.1'

// Instantiate the RequestQueue.
      RequestQueue queue = Volley.newRequestQueue(this);

      JsonArrayRequest jsonArrayRequest = new JsonArrayRequest(Request.Method.GET, URL, null, new Response.Listener<JSONArray>() {
          @Override
          public void onResponse(JSONArray response) {
              for (int i = 0; i < response.length(); i++) {
                  // creating a new json object and
                  // getting each object from our json array.
                  try {
                      // we are getting each json object.
                      JSONObject responseObj = response.getJSONObject(i);

                      // now we get our response from API in json object format.
                      // in below line we are extracting a string with
                      // its key value from our json object.
                      // similarly we are extracting all the strings from our json object.
                      String courseName = responseObj.getString("courseName");
                      String courseTracks = responseObj.getString("courseTracks");
                      String courseMode = responseObj.getString("courseMode");
                      String courseImageURL = responseObj.getString("courseimg");

                      list.add(new dataModels(courseName,courseImageURL,courseMode,courseTracks));

//                      binding.text.setText(courseName);

                    } catch (JSONException e) {
                      e.printStackTrace();
                  }
              }

              dataAdapters adapters = new dataAdapters(list,getApplicationContext());
              binding.recyclerview.setAdapter(adapters);

              LinearLayoutManager linearLayoutManager = new LinearLayoutManager(getApplicationContext());
              binding.recyclerview.setLayoutManager(linearLayoutManager);
          }
      }, new Response.ErrorListener() {
          @Override
          public void onErrorResponse(VolleyError error) {
              Toast.makeText(MainActivity.this, "Fail to get the data..", Toast.LENGTH_SHORT).show();
          }
      });
      queue.add(jsonArrayRequest);
  

project demo

// Instantiate the RequestQueue.
	queue = Volley.newRequestQueue(this);
	String url = Constants.GET_CATEGORIES_URL;
	// Request a string response from the provided URL.
	StringRequest stringRequest = new StringRequest(Request.Method.GET, url,
	new Response.Listener<String>() {
	@Override
	public void onResponse(String response) {
	try {
	JSONObject jsonObject = new JSONObject(response);
	if(jsonObject.get("status").equals("success")){
	JSONArray data = jsonObject.getJSONArray("categories");
	for(int i=0; i<data.length(); i++){
	JSONObject d1 = data.getJSONObject(i);
	CategoriesModels category = new CategoriesModels(
	d1.getInt("id"),
	d1.getString("name"),
	d1.getString("brief"),
	Constants.CATEGORIES_IMAGE_URL+d1.getString("icon")
	);
	clist.add(category);
	cadapters.notifyDataSetChanged();
	}
	}
	} catch (JSONException e) {
	e.printStackTrace();
	}
	}
	}, new Response.ErrorListener() {
	@Override
	public void onErrorResponse(VolleyError error) {
	Toast.makeText(MainActivity.this, "That didn't work!", Toast.LENGTH_SHORT).show();
	}
	});