How to add header to loopj POST
<p>I am trying to POST a data from android to restful webservices using loopj.Web services is working fine with POSTMAN testing. When i try to post its failing and i get following message in logcat.</p>

<blockquote>
  <p>cz.msebera.android.httpclient.client.HttpResponseException: Unsupported Media Type</p>
</blockquote>

<p>From the error i think i am not adding Content-Type - application/json to the header. I saw few examples on how to add. But its really confusing.can someone help me.</p>

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

        etemployeeId = (EditText)findViewById(R.id.employeeId);
        etfirstName = (EditText)findViewById(R.id.firstName);

        buttonRegister = (Button) findViewById(R.id.btnRegister);
        buttonRegister.setOnClickListener(new View.OnClickListener() { 

            @Override
            public void onClick(View view) {   
                registerUser(view);
            }
        }); 
       getEmployees();
    } 
    public void registerUser(View view) {
        RequestParams params = new RequestParams();

        String employeeId = etemployeeId.getText().toString();
        String firstName = etfirstName.getText().toString();
        params.put("employeeId", employeeId);
        params.put("firstName", firstName);

    EmployeeRestClient.post("RestExample/employee", params, new JsonHttpResponseHandler(){
            @Override
            public void onSuccess(int statusCode, Header[] headers, JSONObject response) {
                super.onSuccess(statusCode, headers, response);
 Log.d("Callback", "onSuccess response");
                Toast.makeText(MainActivity.this,
                        "You are successfully registered!", Toast.LENGTH_LONG).show();
                    }
       @Override
    public void onFailure(int statusCode, Header[] headers, String responseString, Throwable throwable) {
                    super.onFailure(statusCode, headers, responseString, throwable);
                    Log.d("Callback", "onFailure responseString");
                    Toast.makeText(MainActivity.this,
                            "failed", Toast.LENGTH_LONG).show();
                }                   
            });
        }
    }
</code></pre>