public void onClick(View v) {
                inputSub = subIn.getText().toString();

            String url = "https://some_url";

            String inputJson = null;
            try {
                inputJson = "{  "asset": {"id":" ..........}

            }catch (JSONException e){
                e.printStackTrace();
            }
            new CreateIncident(url, inputJson).execute();
        }

private class CreateIncident extends AsyncTask<Void, Void, Void> {
            private final String TAG = "HttpClient";

            final String user ="some_user";
            final String password ="some_pwd";

            String serUrl;
            String inputJson ="";

public CreateIncident(String serUrl, String inputJson) {
            this.serUrl = serUrl;
            this.inputJson = inputJson;
        }

                @Override
                protected void onPreExecute() {
                    super.onPreExecute();

                    // Showing progress dialog
                    pDialog = new ProgressDialog(CreateIncidentActivity.this);
                    pDialog.setMessage("Please wait...");
                    pDialog.setCancelable(false);
                    pDialog.show();
                }

                @Override
                protected Void doInBackground(Void... params) {

              try {

                String authString = user + ":" + password;

                byte[] authBytes = authString.getBytes();
                String authStringEnc = Base64.encodeToString(authBytes, Base64.DEFAULT);

                DefaultHttpClient httpClient = new DefaultHttpClient();
                HttpPost postRequest = new HttpPost(serUrl);

                postRequest.setHeader("Authorization", "Basic " + authStringEnc);
                postRequest.setHeader("Accept", "application/json");
                postRequest.setHeader("Content-type", "application/json");

                StringEntity input = new StringEntity(inputJson);

                input.setContentType("application/json");
                postRequest.setEntity(input);

                HttpResponse response = httpClient.execute(postRequest);

                StringBuilder sb = new StringBuilder();
                try {
                    BufferedReader reader =
                            new BufferedReader(new InputStreamReader(response.getEntity().getContent()), 65728);
                    String line = null;

                    while ((line = reader.readLine()) != null) {
                        sb.append(line);
                    }
                }
                catch (IOException e) { e.printStackTrace(); }
                catch (Exception e) { e.printStackTrace(); }


                System.out.println("finalResult " + sb.toString());
                System.out.println(response.getStatusLine().getReasonPhrase());

                if (response.getStatusLine().getStatusCode() != 201) {
                    throw new RuntimeException("Failed : HTTP error code : "
                            + response.getStatusLine().getStatusCode());
                }

                BufferedReader br = new BufferedReader(
                        new InputStreamReader((response.getEntity().getContent())));


                httpClient.getConnectionManager().shutdown();

            } catch (MalformedURLException e) {

                e.printStackTrace();

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

            }

                @Override
                protected void onPostExecute(Void result) {
                    super.onPostExecute(result);
                    // Dismiss the progress dialog
                    if (pDialog.isShowing())
                        pDialog.dismiss();

                }
            }

useLibrary 'org.apache.http.legacy'

apply plugin: 'com.android.application'

    android {
        useLibrary 'org.apache.http.legacy'
        compileSdkVersion 26
        buildToolsVersion "26.0.0"
        defaultConfig {
            applicationId "com.example.mnaum.getgpscoordinates"
            minSdkVersion 15
            targetSdkVersion 26
            versionCode 1
            versionName "1.0"
            testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
        }