how to connect mysql database in android studio using php

In this Article today learn how to connect mysql database in android studio using php.follow the full source code how to connect mysql database in android studio using php.

1.Create Database on your hosting :

2.create table name:'tbl_login'

CREATE TABLE tbl_login (

'email' varchar(255) NOT NULL,

'password' varchar(255) NOT NULL

);

3.login.inc.php:

<?php

include 'config.inc.php';

// Check whether username or password is set from android

if(isset($_POST['username']) && isset($_POST['password']))

{

// Innitialize Variable

$result='';

$username = $_POST['username'];

$password = $_POST['password'];

// Query database for row exist or not

$sql = 'SELECT * FROM tbl_login WHERE email = :username AND password = :password';

$stmt = $conn->prepare($sql);

$stmt->bindParam(':username', $username, PDO::PARAM_STR);

$stmt->bindParam(':password', $password, PDO::PARAM_STR);

$stmt->execute();

if($stmt->rowCount())

{

$result="true";

}

elseif(!$stmt->rowCount())

{

$result="false";

}

// send result back to android

echo $result;

}

4.config.inc.php:

<?php

$servername = "localhost";

$username = "root";

$password = "root";

$dbname = "9tutorials";

try {

$conn = new PDO("mysql:host=$servername;dbname=$dbname", $username, $password);

$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

}

catch(PDOException $e)

{

die("OOPs something went wrong");

}

5.MainActivity.java:

import android.app.ProgressDialog;

import android.content.Intent;

import android.content.SharedPreferences;

import android.net.Uri;

import android.os.AsyncTask;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.EditText;

import android.widget.Toast;

import java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.io.OutputStream;

import java.io.OutputStreamWriter;

import java.net.HttpURLConnection;

import java.net.MalformedURLException;

import java.net.URL;

public class MainActivity extends AppCompatActivity {

// CONNECTION_TIMEOUT and READ_TIMEOUT are in milliseconds

public static final int CONNECTION_TIMEOUT=10000;

public static final int READ_TIMEOUT=15000;

private EditText etEmail;

private EditText etPassword;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

// Get Reference to variables

etEmail = (EditText) findViewById(R.id.email);

etPassword = (EditText) findViewById(R.id.password);

}

// Triggers when LOGIN Button clicked

public void checkLogin(View arg0) {

// Get text from email and passord field

final String email = etEmail.getText().toString();

final String password = etPassword.getText().toString();

// Initialize AsyncLogin() class with email and password

new AsyncLogin().execute(email,password);

}

private class AsyncLogin extends AsyncTask<String, String, String>

{

ProgressDialog pdLoading = new ProgressDialog(MainActivity.this);

HttpURLConnection conn;

URL url = null;

@Override

protected void onPreExecute() {

super.onPreExecute();

//this method will be running on UI thread

pdLoading.setMessage("\tLoading...");

pdLoading.setCancelable(false);

pdLoading.show();

}

@Override

protected String doInBackground(String... params) {

try {

// Enter URL address where your php file resides

url = new URL("http://localhost/test/login.inc.php");

} catch (MalformedURLException e) {

// TODO Auto-generated catch block

e.printStackTrace();

return "exception";

}

try {

// Setup HttpURLConnection class to send and receive data from php and mysql

conn = (HttpURLConnection)url.openConnection();

conn.setReadTimeout(READ_TIMEOUT);

conn.setConnectTimeout(CONNECTION_TIMEOUT);

conn.setRequestMethod("POST");

// setDoInput and setDoOutput method depict handling of both send and receive

conn.setDoInput(true);

conn.setDoOutput(true);

// Append parameters to URL

Uri.Builder builder = new Uri.Builder()

.appendQueryParameter("username", params[0])

.appendQueryParameter("password", params[1]);

String query = builder.build().getEncodedQuery();

// Open connection for sending data

OutputStream os = conn.getOutputStream();

BufferedWriter writer = new BufferedWriter(

new OutputStreamWriter(os, "UTF-8"));

writer.write(query);

writer.flush();

writer.close();

os.close();

conn.connect();

} catch (IOException e1) {

// TODO Auto-generated catch block

e1.printStackTrace();

return "exception";

}

try {

int response_code = conn.getResponseCode();

// Check if successful connection made

if (response_code == HttpURLConnection.HTTP_OK) {

// Read data sent from server

InputStream input = conn.getInputStream();

BufferedReader reader = new BufferedReader(new InputStreamReader(input));

StringBuilder result = new StringBuilder();

String line;

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

result.append(line);

}

// Pass data to onPostExecute method

return(result.toString());

}else{

return("unsuccessful");

}

} catch (IOException e) {

e.printStackTrace();

return "exception";

} finally {

conn.disconnect();

}

@Override

protected void onPostExecute(String result) {

//this method will be running on UI thread

pdLoading.dismiss();

if(result.equalsIgnoreCase("true"))

{

/* Here launching another activity when login successful. If you persist login state

use sharedPreferences of Android. and logout button to clear sharedPreferences.

Intent intent = new Intent(MainActivity.this,SuccessActivity.class);

startActivity(intent);

MainActivity.this.finish();

}else if (result.equalsIgnoreCase("false")){

// If username and password does not match display a error message

Toast.makeText(MainActivity.this, "Invalid email or password", Toast.LENGTH_LONG).show();

} else if (result.equalsIgnoreCase("exception") || result.equalsIgnoreCase("unsuccessful")) {

Toast.makeText(MainActivity.this, "OOPs! Something went wrong. Connection Problem.", Toast.LENGTH_LONG).show();

}

6.activity_main.xml:

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

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

xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"

android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"

android:paddingRight="@dimen/activity_horizontal_margin"

android:paddingTop="@dimen/activity_vertical_margin"

android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">

<EditText

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:inputType="textEmailAddress"

android:ems="10"

android:id="@+id/email"

android:layout_alignParentTop="true"

android:layout_alignParentLeft="true"

android:layout_alignParentStart="true"

android:hint="Email"

android:layout_marginTop="10dp"/>

<EditText

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:inputType="textPassword"

android:ems="10"

android:id="@+id/password"

android:layout_below="@+id/email"

android:hint="Password"

android:layout_marginTop="10dp"/>

<Button

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:text="LOGIN"

android:id="@+id/button"

android:layout_below="@+id/password"

android:layout_marginTop="10dp"

android:onClick="checkLogin"/>

</RelativeLayout>

7.SuccessActivity.java:

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

public class SuccessActivity extends AppCompatActivity {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_success);

}

8.activity_success.xml:

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

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

xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"

android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"

android:paddingRight="@dimen/activity_horizontal_margin"

android:paddingTop="@dimen/activity_vertical_margin"

android:paddingBottom="@dimen/activity_vertical_margin">

<TextView

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:textAppearance="?android:attr/textAppearanceLarge"

android:text="WELCOME"

android:id="@+id/textView"

android:layout_alignParentTop="true"

android:layout_centerHorizontal="true"

android:layout_marginTop="62dp" />

<TextView

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:textAppearance="?android:attr/textAppearanceMedium"

android:text="Successfully LoggedIn"

android:id="@+id/textView2"

android:layout_marginTop="46dp"

android:layout_below="@+id/textView"

android:layout_centerHorizontal="true" />

</RelativeLayout>

9.Android manifest.xml

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

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

package="com.akash.login" >

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

<uses-permission android:name="android.permission.INTERNET" />

<application

android:allowBackup="true"

android:icon="@mipmap/ic_launcher"

android:label="@string/app_name"

android:supportsRtl="true"

android:theme="@style/AppTheme" >

<intent-filter>

</intent-filter>

</activity>

</activity>

</application>

</manifest>

Android Tutorial

Sunday 7 February 2021

how to connect mysql database in android studio using php