How to Send Employee Information to the Local Server in Android

Amir Ali
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Introduction

This article explains how to send employee information to the local server in Android.

This application will show you how to send information to the server in Android. First you need a local server; I used WampServer. You can use Wamp or Xamp, whatever you like to use. I have posted an article on how to set up a WampServer on your Desktop.

Here I will show you how to create a database in WampServer.

Step 1

Open Wampserver on your browser by writing localhost or localhost:8080. In your browser a page will be displayed.

WampServerPage

Step 2

Click on "PhPmyadmin" on the left side.

Step 3

Click the Databases on the top of the page.

ClickDatabase

Step 4

Click on the SQL on the right side of Databases.

ClickSql

Step 5

Here you will create the database by writing a SQL query and click on the "Go" button. Your database will be created and you can see your database name on the left side of the page.

CreateDatabase

Step 6

Now click on your database name; another page will be shown. Now again click SQL and write a query to create a table in your database.

CreateTable

Now for the coding part.

Step 7

Create PHP files to connect with the server.

db_connect.php

<?php

/**

* A class file to connect to database

class DB_CONNECT {

// constructor

function __construct() {

// connecting to database

$this->connect();

}

// destructor

function __destruct() {

// closing db connection

$this->close();

}

/**

* Function to connect with database

function connect() {

// import database connection variables

require_once __DIR__ . '/db_config.php';

// Connecting to mysql database

$con = mysql_connect(DB_SERVER, DB_USER, DB_WORD) or die(mysql_error());

// Selecing database

$db = mysql_select_db(DB_DATABASE) or die(mysql_error()) or die(mysql_error());

// returing connection cursor

return $con;

}

/**

* Function to close db connection

function close() {

// closing db connection

mysql_close();

}

db_config

<?php

* All database connection variables

define('DB_USER', "root"); // db user

define('DB_WORD', ""); // db word (mention your db word here)

define('DB_DATABASE', "employee"); // database name

define('DB_SERVER', "localhost"); // db server

Create a PHP file to store information to the server.

<?php

* Following code will create a new product row

* All product details are read from HTTP Post Request

// array for JSON response

$response = array();

// check for required fields

if (isset($_POST['id']) && isset($_POST['name'])) {

$id = $_POST['id'];

$name = $_POST['name'];

// include db connect class

require_once __DIR__ . '/db_connect.php';

// connecting to db

$db = new DB_CONNECT();

// mysql inserting a new row

$result = mysql_query("INSERT INTO employe_data(id, name) VALUES('$id', '$name')");

// check if row inserted or not

if ($result) {

// successfully inserted into database

$response["success"] = 1;

$response["message"] = "Product successfully created.";

// echoing JSON response

echo json_encode($response);

} else {

// failed to insert row

$response["success"] = 0;

$response["message"] = "Oops! An error occurred.";

// echoing JSON response

echo json_encode($response);

}

} else {

// required field is missing

$response["success"] = 0;

$response["message"] = "Required field(s) is missing";

// echoing JSON response

echo json_encode($response);

}

Step 8

Create an XML file and write this. In this XML file you will use two text views, two edittexts and a button.

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="vertical" >

<TextView android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:text="Employee_Id"

android:paddingLeft="10dip"

android:paddingRight="10dip"

android:paddingTop="10dip"

android:textSize="17dip"/>

<EditText android:id="@+id/inputId"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:layout_margin="5dip"

android:layout_marginBottom="15dip"

android:singleLine="true"/>

<TextView android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:text="Employee_Name"

android:paddingLeft="10dip"

android:paddingRight="10dip"

android:paddingTop="10dip"

android:textSize="17dip"/>

<EditText android:id="@+id/inputName"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:layout_margin="5dip"

android:layout_marginBottom="15dip"

android:singleLine="true"

<Button android:id="@+id/btnCreateProduct"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:text="Create "/>

</LinearLayout>

Step 9

Create a Java class file MainActivity with the following:

package com.example.adddatatotheserver;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

import org.apache.http.NameValuePair;

import org.apache.http.message.BasicNameValuePair;

import org.json.JSONArray;

import org.json.JSONException;

import org.json.JSONObject;

import android.app.Activity;

import android.app.ListActivity;

import android.app.ProgressDialog;

import android.content.Intent;

import android.os.AsyncTask;

import android.os.Bundle;

import android.util.Log;

import android.view.View;

import android.view.View.OnClickListener;

import android.view.inputmethod.EditorInfo;

import android.widget.AdapterView;

import android.widget.AdapterView.OnItemClickListener;

import android.widget.Button;

import android.widget.EditText;

import android.widget.ListAdapter;

import android.widget.ListView;

import android.widget.SimpleAdapter;

import android.widget.TextView;

public class MainActivity extends Activity {

// Progress Dialog

private ProgressDialog pDialog;

// Create the object of JsonParser class

JSONParser jParser = new JSONParser();

EditText inputName;

EditText inputId;

// url to create send data. This contains the ip address of my machine on which the local server is running. You will write the IP address of your machine

private static String url = "http://192.168.1.135:8080/connect_php/create_product.php";

// JSON Node names

private static final String TAG_SUCCESS = "success";

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

// Edit Text

inputName = (EditText) findViewById(R.id.inputName);

inputId = (EditText) findViewById(R.id.inputId);

// Create button

Button btnCreateProduct = (Button) findViewById(R.id.btnSend);

// button click event

btnCreateProduct.setOnClickListener(new View.OnClickListener() {

/*on button click you will call the execute() method with the object of CreateNewId class and onPreExecute() will be called where we start the progress dialogue. After the execution of

onPreExecute(), doInBackGround method will be called automatically which sends the data to the JsonParser class. In JsonParser class I have created the Http Client to send the data to the server. */

@Override

public void onClick(View view) {

// creating new product in background thread

new CreateNewId().execute();

}

});

}

/**

* Background Async Task to Create new product

* */

class CreateNewId extends AsyncTask<String, String, String> {

/**

* Before starting background thread Show Progress Dialog

* */

@SuppressWarnings("unused")

@Override

protected void onPreExecute() {

super.onPreExecute();

pDialog = new ProgressDialog(MainActivity.this);

pDialog.setMessage("Creating Data..");

pDialog.setIndeterminate(false);

pDialog.setCancelable(true);

pDialog.show();

}

/**

* Creating product

* */

protected String doInBackground(String... args) {

String name = inputName.getText().toString();

String id = inputId.getText().toString();

// Building Parameters

List<NameValuePair> params = new ArrayList<NameValuePair>();

params.add(new BasicNameValuePair("name", name));

params.add(new BasicNameValuePair("id", id));

// getting JSON Object

// Note that create product url accepts POST method

JSONObject json = jParser.makeHttpRequest(url,

"POST", params);

// check log cat fro response

Log.d("Create Response", json.toString());

// check for success tag

try {

int success = json.getInt(TAG_SUCCESS);

if (success == 1) {

// successfully created product

// Intent i = new Intent(getApplicationContext(), AllProductsActivity.class);

//startActivity(i);

finish();

// closing this screen

} else {

// failed to create product

}

} catch (JSONException e) {

e.printStackTrace();

}

return null;

}

/**

* After completing background task Dismiss the progress dialog

* **/

protected void onPostExecute(String file_url) {

// dismiss the dialog once done

pDialog.dismiss();

}

Step 10

Create another Java class file JsonParser with the following:

package com.example.adddatatotheserver;

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.io.UnsupportedEncodingException;

import java.util.List;

import org.apache.http.HttpEntity;

import org.apache.http.HttpResponse;

import org.apache.http.NameValuePair;

import org.apache.http.client.ClientProtocolException;

import org.apache.http.client.entity.UrlEncodedFormEntity;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.client.methods.HttpPost;

import org.apache.http.client.utils.URLEncodedUtils;

import org.apache.http.impl.client.DefaultHttpClient;

import org.json.JSONException;

import org.json.JSONObject;

import android.util.Log;

public class JSONParser {

static InputStream inputStream = null;

static JSONObject jObject = null;

static String jsonString = "";

// constructor

public JSONParser() {

}

// function get json from url

// by making HTTP POST or GET mehtod

public JSONObject makeHttpRequest(String url, String method,

List<NameValuePair> params) {

// Making HTTP request

try {

// check for request method

if(method == "POST"){

// request method is POST

// defaultHttpClient

DefaultHttpClient client = new DefaultHttpClient();

HttpPost post = new HttpPost(url);

post.setEntity(new UrlEncodedFormEntity(params));

HttpResponse httpResponse = client.execute(post);

HttpEntity entity = httpResponse.getEntity();

inputStream = entity.getContent();

}else if(method == "GET"){

// request method is GET

DefaultHttpClient httpClient = new DefaultHttpClient();

String paramString = URLEncodedUtils.format(params, "utf-8");

url += "?" + paramString;

HttpGet httpGet = new HttpGet(url);

HttpResponse httpResponse = httpClient.execute(httpGet);

HttpEntity httpEntity = httpResponse.getEntity();

inputStream = httpEntity.getContent();

}

} catch (UnsupportedEncodingException e) {

e.printStackTrace();

} catch (ClientProtocolException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

}

try {

BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(

inputStream, "iso-8859-1"), 8);

StringBuilder stringBuilder = new StringBuilder();

String line = null;

while ((line = bufferedReader.readLine()) != null) {

stringBuilder.append(line + "\n");

}

inputStream.close();

jsonString = stringBuilder.toString();

} catch (Exception e) {

Log.e("Buffer Error", "Error converting result " + e.toString());

}

Log.d("debug", "string: "+jsonString);

// try parse the string to a JSON object

try {

jObject = new JSONObject(jsonString);

} catch (JSONException e) {

Log.e("JSON Parser", "Error parsing data " + e.toString());

}

// return JSON String

return jObject;

}

Step 11

Android Manifest.Xml file

In the Android Manifest.xml file give the internet permission as in the following:

<?xml version="1.0" encoding="utf-8"?>

<activity

  android:name="com.example.adddatatotheserver.MainActivity"
  android:label="@string/app_name" >
  <intent-filter>
  <action android:name="android.intent.action.MAIN" />
  <category android:name="android.intent.category.LAUNCHER" />
  </intent-filter>
  </activity>
  </application>
  <uses-permission android:name="android.permission.INTERNET"></uses-permission>
  <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
</manifest>

Step 12

Enter data to send

Progress

Data on the Server

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