PostActivity.java

package com.example.jim_m.myapplication;

import cz.msebera.android.httpclient.Header;
import org.json.*;
import com.loopj.android.http.*;

import android.widget.Button;
import android.widget.Toast;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import java.io.UnsupportedEncodingException;
public class PostActivity extends AppCompatActivity {

    EditText First_Name;

    Button Post;
    EditText Last_Name;
    EditText Salary;
    EditText Address;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_post);
        First_Name= (EditText)findViewById(R.id.edtTxtFirstName);
        Last_Name= (EditText)findViewById(R.id.edtLastName);
        Salary=(EditText)findViewById(R.id.editSalary);
        Address=(EditText)findViewById(R.id.editText3);
        Post= (Button)findViewById(R.id.btnPost);

    }

    public void Post(View view){
        String first_name = First_Name.getText().toString();
        String last_name = Last_Name.getText().toString();
        String salary = Salary.getText().toString();
        String address = Address.getText().toString();
        RequestParams params = new RequestParams();
        params.put("first_name", first_name);
        params.put("last_name", last_name);
        params.put("address", address);
        params.put("salary1", salary);

        invokeWS(params);

    }

    public void invokeWS(RequestParams params){

        AsyncHttpClient client = new AsyncHttpClient();
        client.post("http://employeesservice.azurewebsites.net/api/employees",params, new AsyncHttpResponseHandler() {

            @Override
            public void onStart() {
                // called before request is started
            }

            @Override
            public void onSuccess(int statusCode, Header[] headers, byte[] response) {


                try {
                    String str = new String(response, "UTF-8");
                    // JSON Object
                    JSONObject obj = new JSONObject(str);
                    // When the JSON response has status boolean value assigned with true
                    if(obj.getBoolean("status")){
                        // Set Default Values for Edit View controls

                        // Display successfully registered message using Toast
                        Toast.makeText(getApplicationContext(), "You are successfully registered!", Toast.LENGTH_LONG).show();
                    }
                    // Else display error message
                    else{

                        Toast.makeText(getApplicationContext(), obj.getString("error_msg"), Toast.LENGTH_LONG).show();
                    }
                } catch (JSONException e) {
                    // TODO Auto-generated catch block
                    Toast.makeText(getApplicationContext(), "Error Occured [Server's JSON response might be invalid]!", Toast.LENGTH_LONG).show();
                    e.printStackTrace();

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

            }

            @Override
            public void onFailure(int statusCode, Header[] headers, byte[] errorResponse, Throwable e) {
                // called when response HTTP status is "4XX" (eg. 401, 403, 404)
            }

            @Override
            public void onRetry(int retryNo) {
                // called when request is retried
            }
        });

    }
}