Android Login using Session Manager

Android Login using Session Manager

In this tutorial you can see how to make login registration using session manager in android. You can use this session throughout your app and provide shared preference in your app.

If you are following my previous login registration tutorial, then you have to change it to session manager very easily.

Add this in your gradle build file.

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")

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.loginwithsession">

    <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">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name=".Registration" />
        <activity android:name=".Welcome"></activity>
    </application>

</manifest>

MainActivity.java

package com.loginwithsession;



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 MainActivity extends ActionBarActivity {



    private EditText editTextUserName;

    private EditText editTextPassword;

    Button Register;

    public static final String USER_NAME = "USERNAME";

    String username;

    String password;



    UserSessionManager session;



    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);



        session = new UserSessionManager(getApplicationContext());

        Toast.makeText(getApplicationContext(), "User Login Status: " + session.isUserLoggedIn(), Toast.LENGTH_LONG).show();

        if(session.isUserLoggedIn() == true){

            Intent intent = new Intent(getApplicationContext(),Welcome.class);

            startActivity(intent);

        }

        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(MainActivity.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, final String password) {

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

            private Dialog loadingDialog;

            @Override

            protected void onPreExecute() {

                super.onPreExecute();

                loadingDialog = ProgressDialog.show(MainActivity.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")){



                    session.createUserLoginSession(username, password);
                    Intent i = new Intent(getApplicationContext(), Welcome.class);

                    i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

                    // Add new Flag to start new Activity

                    i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

                    startActivity(i);



                    finish();

                    Toast.makeText(getApplicationContext(), "success", Toast.LENGTH_LONG).show();

                }else {

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

                }

            }

        }

        LoginAsync la = new LoginAsync();

        la.execute(username, password);

    }

}

activity_main.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>

Regitration.java

package com.loginwithsession;



import android.app.ProgressDialog;

import android.content.Intent;

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";

    UserSessionManager session;


    @Override



    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_registration);



        session = new UserSessionManager(getApplicationContext());

        Toast.makeText(getApplicationContext(), "User Login Status: " + session.isUserLoggedIn(), Toast.LENGTH_LONG).show();

        if(session.isUserLoggedIn() == true){

            Intent intent = new Intent(getApplicationContext(),Welcome.class);

            startActivity(intent);

        }



        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();

                finish();

                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);

    }

}

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=".Registration">



    <TextView

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="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="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="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="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="button_register"

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



</LinearLayout>

UserSessionManager.java

package com.loginwithsession;



import android.content.Context;

import android.content.Intent;

import android.content.SharedPreferences;

import android.content.SharedPreferences.Editor;

import java.util.HashMap;



public class UserSessionManager {



    // Shared Preferences reference

    SharedPreferences pref;



    // Editor reference for Shared preferences

    Editor editor;



    // Context

    Context _context;



    // Shared pref mode

    int PRIVATE_MODE = 0;



    // Sharedpref file name

    private static final String PREFER_NAME = "AndroidExamplePref";



    // All Shared Preferences Keys

    private static final String IS_USER_LOGIN = "IsUserLoggedIn";



    // User name (make variable public to access from outside)

    public static final String KEY_NAME = "username";



    // Email address (make variable public to access from outside)

    public static final String KEY_EMAIL = "password";



    // Constructor

    public UserSessionManager(Context context){

        this._context = context;

        pref = _context.getSharedPreferences(PREFER_NAME, PRIVATE_MODE);

        editor = pref.edit();

    }



    //Create login session

    public void createUserLoginSession(String name, String email){

        // Storing login value as TRUE

        editor.putBoolean(IS_USER_LOGIN, true);



        // Storing name in pref

        editor.putString(KEY_NAME, name);



        // Storing email in pref

        editor.putString(KEY_EMAIL, email);



        // commit changes

        editor.commit();

    }



    /**

     * Check login method will check user login status

     * If false it will redirect user to login page

     * Else do anything

     * */

    public boolean checkLogin(){

        // Check login status

        if(!this.isUserLoggedIn()){



            // user is not logged in redirect him to Login Activity

            Intent i = new Intent(_context, MainActivity.class);



            // Closing all the Activities from stack

            i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);



            // Add new Flag to start new Activity

            i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);



            // Staring Login Activity

            _context.startActivity(i);



            return true;

        }

        return false;

    }







    /**

     * Get stored session data

     * */

    public HashMap<String, String> getUserDetails(){



        //Use hashmap to store user credentials

        HashMap<String, String> user = new HashMap<String, String>();



        // user name

        user.put(KEY_NAME, pref.getString(KEY_NAME, null));



        // user email id

        user.put(KEY_EMAIL, pref.getString(KEY_EMAIL, null));



        // return user

        return user;

    }



    /**

     * Clear session details

     * */

    public void logoutUser(){



        // Clearing all user data from Shared Preferences

        editor.clear();

        editor.commit();



        // After logout redirect user to Login Activity

        Intent i = new Intent(_context, MainActivity.class);



        // Closing all the Activities

        i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);



        // Add new Flag to start new Activity

        i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);



        // Staring Login Activity

        _context.startActivity(i);

    }



    // Check for login

    public boolean isUserLoggedIn(){

        return pref.getBoolean(IS_USER_LOGIN, false);

    }

}

Welcome.java

package com.loginwithsession;



import java.util.HashMap;

import android.app.Activity;

import android.os.Bundle;

import android.text.Html;

import android.view.View;

import android.widget.Button;

import android.widget.TextView;

import android.widget.Toast;



public class Welcome extends Activity {





    // User Session Manager Class

    UserSessionManager session;



    // Button Logout

    Button btnLogout;



    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_welcome);



        // Session class instance

        session = new UserSessionManager(getApplicationContext());



        TextView Name = (TextView) findViewById(R.id.lblName);





        // Button logout

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



        Toast.makeText(getApplicationContext(),

                "User Login Status: " + session.isUserLoggedIn(),

                Toast.LENGTH_LONG).show();







        // Check user login (this is the important point)

        // If User is not logged in , This will redirect user to LoginActivity

        // and finish current activity from activity stack.

        if(session.checkLogin())

            finish();



        // get user data from session

        HashMap<String, String> user = session.getUserDetails();



        // get name

        String name = user.get(UserSessionManager.KEY_NAME);



        // Show user data on activity

        Name.setText(Html.fromHtml("Name: <b>" + name + "</b>"));



        btnLogout.setOnClickListener(new View.OnClickListener() {



            @Override

            public void onClick(View arg0) {



                // Clear the User session data

                // and redirect user to LoginActivity

                session.logoutUser();

            }

        });

    }



}

activity_welcome.xml

<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:orientation="vertical"

    android:padding="10dip">



    <TextView

        android:id="@+id/lblName"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:singleLine="true"

        android:layout_marginTop="40dip"

        android:layout_marginBottom="10dip"/>



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

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:text="Logout"/>



</LinearLayout>