Android Tutorials: Login and Registration Using Php MySQL in Android Example.

Login and Registration Using Php MySQL in Android Example.

1.Take user permission in AndroidManifest.xml as given below and also add dependencies in build.gradle .

AndroidManifest

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

build.gradle

compile 'com.loopj.android:android-async-http:1.4.5'

compile files("${android.getSdkDirectory().getAbsolutePath()}" + File.separator +

 "platforms" + File.separator + "android-23" + File.separator + "optional" +

 File.separator + "org.apache.http.legacy.jar")

2. activity_login.xml

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

<LinearLayout 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:orientation="vertical"

android:paddingRight="@dimen/activity_horizontal_margin"

android:paddingTop="@dimen/activity_vertical_margin"

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



    <TextView

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="User Name"

        android:id="@+id/textView" />



    <EditText

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:id="@+id/editTextUserName" />



    <TextView

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="Password"

        android:id="@+id/textView2" />



    <EditText

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:inputType="textPassword"

        android:ems="10"

        android:id="@+id/editTextPassword" />



    <Button

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:text="Login"

        android:onClick="invokeLogin"

        android:id="@+id/button" />



    <Button

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:text="Register"

        android:id="@+id/register"

        android:layout_gravity="center_horizontal" />

</LinearLayout>

3.Login.class

package com.example.mihir.myphpexample;



import android.app.Dialog;

import android.app.ProgressDialog;

import android.content.Intent;

import android.os.AsyncTask;

import android.support.v7.app.ActionBarActivity;

import android.os.Bundle;

import android.view.Menu;

import android.view.MenuItem;

import android.view.View;

import android.widget.Button;

import android.widget.EditText;

import android.widget.Toast;

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.HttpClient;

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

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

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

import org.apache.http.message.BasicNameValuePair;

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.io.UnsupportedEncodingException;

import java.util.ArrayList;

import java.util.List;





public class Login extends ActionBarActivity {



    private EditText editTextUserName;

    private EditText editTextPassword;

    Button Register;

    public static final String USER_NAME = "USERNAME";



    String username;

    String password;



    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_loing);



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

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

        Register =(Button)findViewById(R.id.register);

        Register.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View view) {

                Intent intent = new Intent(Login.this, Registration.class);

                startActivity(intent);

            }

        });

    }



    public void invokeLogin(View view){

        username = editTextUserName.getText().toString();

        password = editTextPassword.getText().toString();



        login(username,password);



    }



    private void login(final String username, String password) {



        class LoginAsync extends AsyncTask<String, Void, String>{



            private Dialog loadingDialog;



            @Override

            protected void onPreExecute() {

                super.onPreExecute();

                loadingDialog = ProgressDialog.show(Login.this, "Please wait", "Loading...");

            }



            @Override

            protected String doInBackground(String... params) {

                String uname = params[0];

                String pass = params[1];



                InputStream is = null;

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

                nameValuePairs.add(new BasicNameValuePair("username", uname));

                nameValuePairs.add(new BasicNameValuePair("password", pass));

                String result = null;



                try{

                    HttpClient httpClient = new DefaultHttpClient();

                    HttpPost httpPost = new HttpPost("http://compliments.esy.es/loginm.php");

                    httpPost.setEntity(new UrlEncodedFormEntity(nameValuePairs));



                    HttpResponse response = httpClient.execute(httpPost);



                    HttpEntity entity = response.getEntity();



                    is = entity.getContent();



                    BufferedReader reader = new BufferedReader(new InputStreamReader(is, "UTF-8"), 8);

                    StringBuilder sb = new StringBuilder();



                    String line = null;

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

                    {

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

                    }

                    result = sb.toString();

                } catch (ClientProtocolException e) {

                    e.printStackTrace();

                } catch (UnsupportedEncodingException e) {

                    e.printStackTrace();

                } catch (IOException e) {

                    e.printStackTrace();

                }

                return result;

            }



            @Override

            protected void onPostExecute(String result){

                String s = result.trim();

                loadingDialog.dismiss();

                if(s.equalsIgnoreCase("success")){

                    Intent intent = new Intent(Login.this, UserProfile.class);

                    intent.putExtra(USER_NAME, username);

                    finish();

                    startActivity(intent);

                }else {

                    Toast.makeText(getApplicationContext(), "Invalid User Name or Password", Toast.LENGTH_LONG).show();

                }

            }

        }

        LoginAsync la = new LoginAsync();

        la.execute(username, password);



    }

}

4.activity_registration.xml

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

<LinearLayout 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:orientation="vertical"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

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





    <TextView

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="@string/string_enter_name" />



    <EditText

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:id="@+id/editTextName" />



    <TextView

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="@string/string_choose_username" />



    <EditText

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:id="@+id/editTextUserName" />



    <TextView

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="@string/string_choose_password" />



    <EditText

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:inputType="textPassword"

        android:id="@+id/editTextPassword" />



    <TextView

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="@string/string_enter_email" />



    <EditText

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:inputType="textEmailAddress"

        android:id="@+id/editTextEmail" />



    <Button

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:text="@string/button_register"

        android:id="@+id/buttonRegister" />



</LinearLayout>

5.Registration.class

package com.example.mihir.myphpexample;



import android.app.ProgressDialog;

import android.os.AsyncTask;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.Menu;

import android.view.MenuItem;

import android.view.View;

import android.widget.Button;

import android.widget.EditText;

import android.widget.Toast;

import java.io.BufferedReader;

import java.io.InputStreamReader;

import java.net.HttpURLConnection;

import java.net.URL;



public class Registration extends AppCompatActivity implements View.OnClickListener{



    private EditText editTextName;

    private EditText editTextUsername;

    private EditText editTextPassword;

    private EditText editTextEmail;

    private Button buttonRegister;

    private static final String REGISTER_URL = "http://compliments.esy.es/register.php";



    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_registration);



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

        editTextUsername = (EditText) findViewById(R.id.editTextUserName);

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

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

        buttonRegister = (Button) findViewById(R.id.buttonRegister);

          buttonRegister.setOnClickListener(this);

    }



    @Override

    public void onClick(View v) {

        if(v == buttonRegister){

            registerUser();

        }

    }



    private void registerUser() {

        String name = editTextName.getText().toString().trim().toLowerCase();

        String username = editTextUsername.getText().toString().trim().toLowerCase();

        String password = editTextPassword.getText().toString().trim().toLowerCase();

        String email = editTextEmail.getText().toString().trim().toLowerCase();

        register(name,username,password,email);

    }



    private void register(String name, String username, String password, String email) {

        String urlSuffix = "?name="+name+"&username="+username+"&password="+password+"&email="+email;

        class RegisterUser extends AsyncTask<String, Void, String>{



            ProgressDialog loading;





            @Override

            protected void onPreExecute() {

                super.onPreExecute();

                loading = ProgressDialog.show(Registration.this, "Please Wait",null, true, true);

            }



            @Override

            protected void onPostExecute(String s) {

                super.onPostExecute(s);

                loading.dismiss();

                Toast.makeText(getApplicationContext(),s,Toast.LENGTH_LONG).show();

            }



            @Override

            protected String doInBackground(String... params) {

                String s = params[0];

                BufferedReader bufferedReader = null;

                try {

                    URL url = new URL(REGISTER_URL+s);

                    HttpURLConnection con = (HttpURLConnection) url.openConnection();

                    bufferedReader = new BufferedReader(new InputStreamReader(con.getInputStream()));



                    String result;



                    result = bufferedReader.readLine();



                    return result;

                }catch(Exception e){

                    return null;

                }

            }

        }



        RegisterUser ru = new RegisterUser();

        ru.execute(urlSuffix);

    }

}

6.MySQLtble

Now you have to create data base table name “users”.

7. register.php

Create register.php for registration.

<?php

$name = $_GET['name'];

$username = $_GET['username'];

$password = $_GET['password'];

$email = $_GET['email'];

if($name == '' || $username == '' || $password == '' || $email == ''){

echo 'please fill all values';

}else{

require_once('db_connect.php');

$sql = "SELECT * FROM users WHERE username='$username' OR email='$email'";

$check = mysqli_fetch_array(mysqli_query($con,$sql));

if(isset($check)){

echo 'username or email already exist';

}else{

$sql = "INSERT INTO users (name,username,password,email) VALUES('$name','$username','$password','$email')";

if(mysqli_query($con,$sql)){

echo 'successfully registered';

}else{

echo 'oops! Please try again!';

}

mysqli_close($con);

}

8.loginm.php

Create loginm.php for login.

<?php

if($_SERVER['REQUEST_METHOD']=='POST'){

$username = $_POST['username'];

$password = $_POST['password'];

require_once('db_connect.php');

$sql = "select * from users where username='$username' and password='$password'";

$check = mysqli_fetch_array(mysqli_query($con,$sql));

if(isset($check)){

echo "success";

}else{

echo "Invalid Username or Password";

}

}else{

echo "error try again";

}

9.db_connect.php

For Connection for php file we required db_connect file in which host, user, password and databse name are used.

<?php

define('HOST','mysql.hostinger.in');

define('USER','u532517283_user');

define('PASS','********** ');

define('DB','u532517283_bdm');

$con = mysqli_connect(HOST,USER,PASS,DB) or die('Unable to Connect');

So finally we are done with user login and registration in android using php MySQL.

THANK YOU..

Android Tutorials

Thursday 20 October 2016

Login and Registration Using Php MySQL in Android Example.

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