ProgressDialog is not showing when calling OKHttp request in Android

Question

While calling okhttp request, progressDialog not showing.I am showing the progress dialog before calling the request and dismiss the progress dialog after getting the repsonse. Here is the code.

progressDialog.show();
GetLogin logResp = new GetLogin();
      try {
           String response = logResp.run(Constants.LOGIN_URL +"username="+username+"&password="+password);
            if (response != null) {
               
                } catch(JSONException e){
                    e.printStackTrace();
                    progressDialog.dismiss();
                }
            }else{
                progressDialog.dismiss();
            }
        } catch (IOException e) {
            e.printStackTrace();
            progressDialog.dismiss();
        }
    
    public class GetLogin {
        OkHttpClient client = new OkHttpClient();
        String run(String url) throws IOException {
            Request request = new Request.Builder()
                    .url(url)
                    .build();
    
            try (Response response = client.newCall(request).execute()) {
                return response.body().string();
            }
        }
    }