Login and Registration API Implementation on Android, How to create login and registration using web service

 Login and Registration API on Web Services:-

In this tutorial, I am discussing web services implementation for login and registration forms in very simple steps.

I have created restful Web services using PHP and MYSQL databases and hosted them into our live server ShivaConceptSolution.com/webservices.

 

Step by Step implementation:-

Step1st:-

Create an Android Project using Android Studio

Step 2nd:-  Create Normal java class and name it HttpHandler under src package of android.

Code for Handler

package com.example.testapp;

import android.util.Log;

import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.ProtocolException;
import java.net.URL;

public class HttpHandler {
    private static final String TAG = HttpHandler.class.getSimpleName();

    public String makeServiceCall(String reqUrl,String method) {
        String response = null;
        try {
            URL url = new URL(reqUrl);
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            conn.setRequestMethod(method);
            // read the response
            InputStream in = new BufferedInputStream(conn.getInputStream());
            response = convertStreamToString(in);
        } catch (MalformedURLException e) {
            Log.e(TAG, "MalformedURLException: " + e.getMessage());
        } catch (ProtocolException e) {
            Log.e(TAG, "ProtocolException: " + e.getMessage());
        } catch (IOException e) {
            Log.e(TAG, "IOException: " + e.getMessage());
        } catch (Exception e) {
            Log.e(TAG, "Exception: " + e.getMessage());
        }
        return response;
    }
    private String convertStreamToString(InputStream is) {
        BufferedReader reader = new BufferedReader(new InputStreamReader(is));
        StringBuilder sb = new StringBuilder();

        String line;
        try {
            while ((line = reader.readLine()) != null) {
                sb.append(line).append('\n');
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                is.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return sb.toString();
    }
}

Step 3rd:-

Create Activity for registration form and write following code.

Code for Reg:-

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".RegActivity">
    <EditText
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:hint="Enter emailid"
        android:id="@+id/txtemail"
        ></EditText>

    <EditText
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/txtpass"
        android:hint="Enter password">

    </EditText>

    <EditText
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:hint="Enter name"
        android:id="@+id/txtname"
        >

    </EditText>

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/btnReg"
        android:text="Register"

        ></Button>


</LinearLayout>

Code for Reg Code:-

package com.example.testapp;

import androidx.appcompat.app.AppCompatActivity;

import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import org.json.JSONException;
import org.json.JSONObject;

public class RegActivity extends AppCompatActivity {
    String url= "https://shivaconceptdigital.com/api/reg.php";
    EditText txtemail,txtpass,txtname;
    String name,email,pass;
    Button btn;
    int status;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_reg);
        txtemail = findViewById(R.id.txtemail);
        txtname = findViewById(R.id.txtname);
        txtpass = findViewById(R.id.txtpass);
        btn = findViewById(R.id.btnReg);
        btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                name= txtname.getText().toString();
                email = txtemail.getText().toString();
                pass = txtpass.getText().toString();
                url += "?fullname="+name+"&pwd="+pass+"&email="+email;
                new GetReg().execute();
            }
        });
    }

    private class GetReg extends AsyncTask<Void ,Void, Void> {
        @Override
        protected void onPreExecute() {
            super.onPreExecute();
            // Showing progress dialog


        }

        @Override
        protected Void doInBackground(Void... arg0) {
            HttpHandler sh = new HttpHandler();
            String jsonStr = sh.makeServiceCall(url,"POST");
            if (jsonStr != null) {

                try {
                    JSONObject jsonObj = new JSONObject(jsonStr);
                    Log.e(null,jsonObj.toString());
                    status = jsonObj.getInt("status");

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


            }
            return  null;
        }

        @Override
        protected void onPostExecute(Void result){

            super.onPostExecute(result);
            if(status==1)
            {
                Toast.makeText(getApplicationContext(),"Registered"+status+ url, Toast.LENGTH_LONG).show();
            }

        }
    }
}

Step:-
Create Activity For Login Form
Code for Login:-

package com.example.testapp;

import androidx.appcompat.app.AppCompatActivity;

import android.os.AsyncTask;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import org.json.JSONException;
import org.json.JSONObject;

import java.nio.channels.AsynchronousChannelGroup;

public class LoginActivity13 extends AppCompatActivity {

    EditText txtuname,txtupass;
    Button btnlogin;
    int status;
    String url = "https://shivaconceptdigital.com/api/login.php";
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login13);
        txtuname = findViewById(R.id.txtuname1);
        txtupass = findViewById(R.id.txtupass1);
        btnlogin = findViewById(R.id.btnlogin);
        btnlogin.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                String email = txtuname.getText().toString();
                String pass = txtupass.getText().toString();
                url+="?pwd="+pass+"&email="+email;
                new GetLogin().execute();
            }
        });

    }
    class GetLogin extends AsyncTask<Void ,Void, Void>
    {
        @Override
        protected void onPreExecute() {
            super.onPreExecute();
            // Showing progress dialog


        }
        @Override
        protected Void doInBackground(Void... voids) {
            HttpHandler sh = new HttpHandler();
            String jsonStr = sh.makeServiceCall(url,"POST");
            if (jsonStr != null) {

                try {
                    JSONObject jsonObj = new JSONObject(jsonStr);
                    status = jsonObj.getInt("status");

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


            }
            return null;
        }

        @Override
        protected void onPostExecute(Void result){

            super.onPostExecute(result);
            if(status==1)
            {
                Toast.makeText(getApplicationContext(),"Login Success and Activated"+status+ url,Toast.LENGTH_LONG).show();
            }
            else if(status==0)
            {
                Toast.makeText(getApplicationContext(),"Login Success and Not Activated"+status+ url,Toast.LENGTH_LONG).show();
            }
            else
            {
                Toast.makeText(getApplicationContext(),"Login Failed"+status+ url,Toast.LENGTH_LONG).show();

            }
        }
    }
}

Code for Design File:-

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".LoginActivity13">

    <EditText
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/txtuname1"
        android:hint="Enter Username">

    </EditText>
    <EditText
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/txtupass1"
        android:hint="Enter Password">

    </EditText>

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/btnlogin"
        android:text="Login">

    </Button>
</LinearLayout>

I hope you have created registration and Login form using Webservices and implement into project.
If any doubt then you can ask in comment section.