Monday, February 29, 2016

How to set up a php script to run using cron in Ubuntu

For one of the customer, I wanted to execute a PHP script for every 30 minutes automatically in Ubuntu OS. This can be achieved through setting up the cron job in the ubuntu. Same thing can be achieved in Windows by using the scheduler. This was explained in previous blog "Cron Job Creation for windows server to run PHP Script".

Here we are discussing how to set up the script to run using cron job in Ubuntu. 

You can use crontab to add/remove/edit cronjobs.
Hit Alt+Ctrl+T to open terminal.
First make sure the script is executable by running:

chmod +x script.php
Then run the following command to add your cronjob:

crontab -e

Add your cronjob like this:

0,30 * * * *  pathTophp pathToScript

eg:

0,30 * * * * /usr/local/bin/php /home/username/public_html/export.php
That's it!
Your can check the current user's crontab entries by running:

crontab -l

For more information about crontab run:

crontab --help

OR

man crontab

That's it. Happy Coding!!!

Saturday, February 27, 2016

How to add a Music Player in the Blogspot

While composing the blog, you can write the content of the blog normally. Then place your cursor where you want to add the audio player. Then use any of the below methods :

1. Using Basic HTML5 Tags:

The <audio> tag is a new feature of HTML5 which we can use to natively embed audio playback in our sites.

It is supported in Internet Explorer 9, Firefox, Opera, Chrome, and Safari, and can be set to play the linked audio file automatically (autoplay) or loop if required.

Here's a basic example using the <audio> element:



<audio controls>
<source src="url-of-audio-file" />
If you cannot see the audio controls, your browser does not support the audio element
</audio>

In the above example, all code related to the audio player is wrapped in <audio> tags. By including controls in the audio element, a simple player is displayed, enabling the user to begin playback when (or if) they want, and to adjust the volume.

If you would like to make the audio to auto play, You can enable auto play as in the following Example:

<audio controls autoplay>
<source src="url-of-audio-file" />
If you cannot see the audio controls, your browser does not support the audio element
</audio>

By retaining the controls attribute, you give visitors the option to stop or resume audio playback if they choose.

To loop audio (specify that the audio will start over again, every time it is finished), include the loop element in the <audio> tag, like this:


<audio controls loop>
<source src="url-of-audio-file" />
If you cannot see the audio controls, your browser does not support the audio element
</audio>

2. Hosting files for the Audio Player:

Blogger does not allow to upload the files. So in order to add the audio player, first we need to host the mp3 or music files.  Few easy solutions to host the files are:

1. You can use dropbox to upload the music file and enable it for public access.  You can add that path to the source src.

2. You can use google sites to host the files as explained in my previous blog. You can upload the file without zipping or compressing it.

Once you have uploaded your audio files, make a note of the direct link to the file which you'll need to add in the code for your audio player.

3. Using the Code Generator Below:

Be sure to check the Interpret Typed HTML option on the post Options in the right side of the post editor, otherwise the raw code for your player will be displayed instead
 Or Switch to HTML and paste the code generated:

Generate code for audio player



Preview of audio player will appear here

That's it. Happy Coding.

Sunday, February 7, 2016

Copy from one workbook and paste into another

One of my friend was trying to copy the data from one work book to other workbook. We can automate this using the VB macro. Here is the solution for it:

I have a work book "test1.xls" which has some contents as shown:



You can download it from here: test1.xlsx

And I have another workbook test2.xlsx which has the contents below:



You can download it from here: test2.xlsx

Now I have to create a VB Micro which will take the contents of these two xlx and adds to Reports.xlsx. The contents of Reports.xlx should look as below:



I want to copy the contents test1.xlx and test2.xls without opening these files and copy them and paste to report.xlsx. Now open the reports.xls and copy the micro I have added:

Create a micro as test() and paste the below code:
Sub test()

Application.ScreenUpdating = False
Workbooks.Open Filename:="F:\Projects\freelancer\vba\test1.xlsx"
'For I = 1 To 50
 Workbooks("test1.xlsx").Sheets("Sheet1").Range("B2:B15").Copy
 Workbooks("Report.xlsm").Sheets("Sheet1").Range("B2").PasteSpecial
    'Workbooks("Report.xlsm").ActiveSheet.Range("B2:B15").Value = Workbooks("test1.xlsx").Sheets("Sheet1").Range("B2:B15")
'Next I
Windows("test1.xlsx").Close
 
 Workbooks.Open Filename:="F:\Projects\freelancer\vba\test2.xlsx"
 Workbooks("test2.xlsx").Sheets("Sheet1").Range("B2:B15").Copy
 Workbooks("Report.xlsm").Sheets("Sheet1").Range("C2").PasteSpecial
Windows("test2.xlsx").Close

Application.ScreenUpdating = True
 Workbooks("Report.xlsm").Save
End Sub
Run this micro and you get the expected result. You can download this report.xlsm which containg the micro from here report.xlsm
That's it. Happy coding.

Thursday, February 4, 2016

Adding SMS Verification Like WhatsApp to Android Application Part-II

In continuation with my previous blog Adding SMS Verification Like WhatsApp to Android Application Part-I ,

1.  Now we will create SMS receiver which will be triggered whenever device receives a SMS.  Create a class HttpService.java in service directory.
package marutsoft.com.smsverify.service;

import android.app.IntentService;
import android.content.Intent;
import android.util.Log;
import android.widget.Toast;

import com.android.volley.Request;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.StringRequest;

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

import java.util.HashMap;
import java.util.Map;

import marutsoft.com.smsverify.activity.MainActivity;
import marutsoft.com.smsverify.app.Config;
import marutsoft.com.smsverify.app.MyApplication;
import marutsoft.com.smsverify.helper.PrefManager;

/** * Created by Karjol G T on 01-02-2016. */public class HttpService extends IntentService {

    private static String TAG = HttpService.class.getSimpleName();

    public HttpService() {
        super(HttpService.class.getSimpleName());
    }

    @Override    protected void onHandleIntent(Intent intent) {
        if (intent != null) {
            String otp = intent.getStringExtra("otp");
            verifyOtp(otp);
        }
    }

    /**     * Posting the OTP to server and activating the user     *     * @param otp otp received in the SMS     */    private void verifyOtp(final String otp) {
        StringRequest strReq = new StringRequest(Request.Method.POST,

                Config.URL_VERIFY_OTP, new Response.Listener<String>() {

            @Override            public void onResponse(String response) {
                Log.d(TAG, response.toString());

                try {

                    JSONObject responseObj = new JSONObject(response);
                    Toast.makeText(getApplicationContext(), responseObj.toString(), Toast.LENGTH_LONG).show();
                    // Parsing json object response                    // response will be a json object                    boolean error = responseObj.getBoolean("error");
                    String message = responseObj.getString("message");

                    if (!error) {
                        // parsing the user profile information                        JSONObject profileObj = responseObj.getJSONObject("profile");

                        String name = profileObj.getString("name");
                        String email = profileObj.getString("email");
                        String mobile = profileObj.getString("mobile");

                        PrefManager pref = new PrefManager(getApplicationContext());
                        pref.createLogin(name, email, mobile);

                        Intent intent = new Intent(HttpService.this, MainActivity.class);
                        intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                        startActivity(intent);

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

                    } else {
                        Toast.makeText(getApplicationContext(), message, Toast.LENGTH_LONG).show();
                    }

                } catch (JSONException e) {
                    Toast.makeText(getApplicationContext(),
                            "Error: " + e.getMessage(),
                            Toast.LENGTH_LONG).show();
                }

            }
        }, new Response.ErrorListener() {

            @Override            public void onErrorResponse(VolleyError error) {
                Log.e(TAG, "Error: " + error.getMessage());
                Toast.makeText(getApplicationContext(),
                        error.getMessage(), Toast.LENGTH_SHORT).show();
            }
        }) {

            @Override            protected Map<String, String> getParams() {
                Map<String, String> params = new HashMap<String, String>();
                params.put("otp", otp);

                Log.e(TAG, "Posting params: " + params.toString());
                return params;
            }

        };

        // Adding request to request queue        MyApplication.getInstance().addToRequestQueue(strReq);
    }

}
2. Create SmsReceiver.java in receiver directory.  This class extends the BroadcastReceiver. 

package marutsoft.com.smsverify.receiver;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.telephony.SmsMessage;
import android.util.Log;

import marutsoft.com.smsverify.app.Config;
import marutsoft.com.smsverify.service.HttpService;

/** * Created by Karjol G T on 01-02-2016. */public class SmsReceiver extends BroadcastReceiver {

    private static final String TAG = SmsReceiver.class.getSimpleName();

    @Override    public void onReceive(Context context, Intent intent) {

        final Bundle bundle = intent.getExtras();
        try {
            if (bundle != null) {
                Object[] pdusObj = (Object[]) bundle.get("pdus");
                for (Object aPdusObj : pdusObj) {
                    SmsMessage currentMessage = SmsMessage.createFromPdu((byte[]) aPdusObj);
                    String senderAddress = currentMessage.getDisplayOriginatingAddress();
                    String message = currentMessage.getDisplayMessageBody();

                    Log.e(TAG, "Received SMS: " + message + ", Sender: " + senderAddress);

                    // if the SMS is not from our gateway, ignore the message                    if (!senderAddress.toLowerCase().contains(Config.SMS_ORIGIN.toLowerCase())) {
                        return;
                    }

                    // verification code from sms                    String verificationCode = getVerificationCode(message);

                    Log.e(TAG, "OTP received: " + verificationCode);

                    Intent hhtpIntent = new Intent(context, HttpService.class);
                    hhtpIntent.putExtra("otp", verificationCode);
                    context.startService(hhtpIntent);
                }
            }
        } catch (Exception e) {
            Log.e(TAG, "Exception: " + e.getMessage());
        }
    }

    /**     * Getting the OTP from sms message body     * ':' is the separator of OTP from the message     *     * @param message     * @return     */    private String getVerificationCode(String message) {
        String code = null;
        int index = message.indexOf(Config.OTP_DELIMITER);

        if (index != -1) {
            int start = index + 2;
            int length = 6;
            code = message.substring(start, start + length);
            return code;
        }

        return code;
    }

}
3. You need to update the permissions to AndroidManifest.xml 
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.RECEIVE_SMS" />
<uses-permission android:name="android.permission.READ_SMS" />
<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="marutsoft.com.smsverify">

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

    <application        android:name=".app.MyApplication"        android:allowBackup="true"        android:icon="@mipmap/ic_launcher"        android:label="@string/app_name"        android:supportsRtl="true"        android:theme="@style/AppTheme">
        <activity            android:name=".activity.SmsActivity"            android:label="@string/title_activity_sms">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

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

        <activity            android:name=".activity.MainActivity"            android:label="@string/app_name"            android:windowSoftInputMode="adjustResize">

        </activity>
        <!-- SMS Receiver -->        <receiver android:name=".receiver.SmsReceiver">
            <intent-filter android:priority="99999">
                <action android:name="android.provider.Telephony.SMS_RECEIVED" />
            </intent-filter>
        </receiver>


        <!-- Intent service -->        <service            android:name=".service.HttpService"            android:exported="false" />
    </application>

</manifest>
3. Now we have all the core logic ready. We will create the Registration screen.
4.  Create activity_sms.xml in res-> layout directory. 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:id="@+id/viewContainer"    android:layout_width="match_parent"    android:layout_height="match_parent"    tools:context="marutsoft.com.smsverify.activity.SmsActivity">

    <marutsoft.com.smsverify.helper.MyViewPager        android:id="@+id/viewPagerVertical"        android:layout_width="fill_parent"        android:layout_height="fill_parent">

        <LinearLayout            android:id="@+id/layout_sms"            android:layout_width="fill_parent"            android:layout_height="wrap_content"            android:background="@color/colorPrimary"            android:gravity="center_horizontal"            android:orientation="vertical">

            <ImageView                android:layout_width="60dp"                android:layout_height="60dp"                android:layout_gravity="center_horizontal"                android:layout_marginBottom="25dp"                android:layout_marginTop="100dp"                android:src="@mipmap/ic_launcher" />

            <TextView                android:layout_width="fill_parent"                android:layout_height="wrap_content"                android:layout_marginBottom="25dp"                android:gravity="center_horizontal"                android:inputType="textCapWords"                android:paddingLeft="40dp"                android:paddingRight="40dp"                android:text="@string/msg_enter_mobile"                android:textColor="@android:color/white"                android:textSize="14dp" />

            <LinearLayout                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:orientation="vertical">

                <EditText                    android:id="@+id/inputName"                    android:layout_width="fill_parent"                    android:layout_height="wrap_content"                    android:layout_marginBottom="15dp"                    android:background="@android:color/white"                    android:fontFamily="sans-serif-light"                    android:hint="@string/lbl_name"                    android:padding="5dp"                    android:singleLine="true"                    android:textColor="@color/colorPrimary"                    android:textSize="18dp" />

                <EditText                    android:id="@+id/inputEmail"                    android:layout_width="fill_parent"                    android:layout_height="wrap_content"                    android:layout_marginBottom="15dp"                    android:background="@android:color/white"                    android:fontFamily="sans-serif-light"                    android:hint="@string/lbl_email"                    android:inputType="textEmailAddress"                    android:padding="5dp"                    android:textColor="@color/colorPrimary"                    android:textSize="18dp" />

                <EditText                    android:id="@+id/inputMobile"                    android:layout_width="240dp"                    android:layout_height="wrap_content"                    android:background="@android:color/white"                    android:fontFamily="sans-serif-light"                    android:hint="@string/lbl_mobile"                    android:inputType="phone"                    android:maxLength="10"                    android:padding="5dp"                    android:textColor="@color/colorPrimary"                    android:textCursorDrawable="@null"                    android:textSize="18dp" />

                <Button                    android:id="@+id/btn_request_sms"                    android:layout_width="fill_parent"                    android:layout_height="wrap_content"                    android:layout_gravity="center_horizontal"                    android:layout_marginTop="25dp"                    android:background="@color/colorPrimaryDark"                    android:text="@string/lbl_next"                    android:textColor="@android:color/white"                    android:textSize="14dp" />
            </LinearLayout>


        </LinearLayout>

        <LinearLayout            android:id="@+id/layout_otp"            android:layout_width="fill_parent"            android:layout_height="fill_parent"            android:background="@color/colorPrimary"            android:gravity="center_horizontal"            android:orientation="vertical">

            <ImageView                android:layout_width="60dp"                android:layout_height="60dp"                android:layout_gravity="center_horizontal"                android:layout_marginBottom="25dp"                android:layout_marginTop="100dp"                android:src="@mipmap/ic_launcher" />

            <TextView                android:layout_width="fill_parent"                android:layout_height="wrap_content"                android:layout_marginBottom="15dp"                android:gravity="center_horizontal"                android:paddingLeft="40dp"                android:paddingRight="40dp"                android:text="@string/msg_sit_back"                android:textColor="@android:color/white"                android:textSize="16dp" />

            <TextView                android:layout_width="fill_parent"                android:layout_height="wrap_content"                android:layout_marginBottom="25dp"                android:gravity="center_horizontal"                android:paddingLeft="40dp"                android:paddingRight="40dp"                android:text="@string/msg_manual_otp"                android:textColor="@android:color/white"                android:textSize="12dp" />

            <EditText                android:id="@+id/inputOtp"                android:layout_width="120dp"                android:layout_height="wrap_content"                android:background="@android:color/white"                android:fontFamily="sans-serif-light"                android:gravity="center_horizontal"                android:hint="@string/lbl_enter_otp"                android:inputType="number"                android:maxLength="6"                android:padding="10dp"                android:textCursorDrawable="@null"                android:textSize="18dp" />

            <Button                android:id="@+id/btn_verify_otp"                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:layout_gravity="center_horizontal"                android:layout_marginTop="25dp"                android:background="@color/colorPrimaryDark"                android:paddingLeft="20dp"                android:paddingRight="20dp"                android:text="@string/lbl_submit"                android:textColor="@android:color/white"                android:textSize="14dp" />

        </LinearLayout>

    </marutsoft.com.smsverify.helper.MyViewPager>


    <ProgressBar        android:id="@+id/progressBar"        android:layout_width="30dp"        android:layout_height="30dp"        android:layout_alignParentBottom="true"        android:layout_centerHorizontal="true"        android:layout_gravity="center"        android:layout_marginBottom="60dp"        android:indeterminateTint="@color/colorAccent"        android:indeterminateTintMode="src_atop"        android:visibility="gone" />

    <LinearLayout        android:id="@+id/layout_edit_mobile"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:layout_alignParentBottom="true"        android:layout_marginBottom="50dp"        android:gravity="center"        android:orientation="horizontal">

        <TextView            android:id="@+id/txt_edit_mobile"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:textColor="@android:color/white"            android:textSize="16dp" />

        <ImageButton            android:id="@+id/btn_edit_mobile"            android:layout_width="40dp"            android:layout_height="40dp"            android:layout_marginLeft="10dp"            android:background="@null"            android:src="@drawable/ic_edit_mobile" />
    </LinearLayout>

</RelativeLayout>
5. Create a class "SmsActivity.java" in activity directory. In this class, requestForSMS() will send the the data like name, email, and mobile number to the server and requests  the SMS. verifyOtp() passses the OTP received in the SMS to the server.
package marutsoft.com.smsverify.activity;

import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.content.Intent;
import android.os.Bundle;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.LinearLayout;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.widget.Toast;

import com.android.volley.Request;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.StringRequest;

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

import java.util.HashMap;
import java.util.Map;

import marutsoft.com.smsverify.R;
import marutsoft.com.smsverify.app.Config;
import marutsoft.com.smsverify.app.MyApplication;
import marutsoft.com.smsverify.helper.PrefManager;
import marutsoft.com.smsverify.service.HttpService;


/** * Created by Karjol G T on 02-02-2016. */public class SmsActivity extends AppCompatActivity implements View.OnClickListener {

    private static String TAG = SmsActivity.class.getSimpleName();

    private ViewPager viewPager;
    private ViewPagerAdapter adapter;
    private Button btnRequestSms, btnVerifyOtp;
    private EditText inputName, inputEmail, inputMobile, inputOtp;
    private ProgressBar progressBar;
    private PrefManager pref;
    private ImageButton btnEditMobile;
    private TextView txtEditMobile;
    private LinearLayout layoutEditMobile;


    @Override    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_sms);

        viewPager = (ViewPager) findViewById(R.id.viewPagerVertical);
        inputName = (EditText) findViewById(R.id.inputName);
        inputEmail = (EditText) findViewById(R.id.inputEmail);
        inputMobile = (EditText) findViewById(R.id.inputMobile);
        inputOtp = (EditText) findViewById(R.id.inputOtp);
        btnRequestSms = (Button) findViewById(R.id.btn_request_sms);
        btnVerifyOtp = (Button) findViewById(R.id.btn_verify_otp);
        progressBar = (ProgressBar) findViewById(R.id.progressBar);
        btnEditMobile = (ImageButton) findViewById(R.id.btn_edit_mobile);
        txtEditMobile = (TextView) findViewById(R.id.txt_edit_mobile);
        layoutEditMobile = (LinearLayout) findViewById(R.id.layout_edit_mobile);

        // view click listeners        btnEditMobile.setOnClickListener(this);
        btnRequestSms.setOnClickListener(this);
        btnVerifyOtp.setOnClickListener(this);

        // hiding the edit mobile number        layoutEditMobile.setVisibility(View.GONE);

        pref = new PrefManager(this);

        // Checking for user session        // if user is already logged in, take him to main activity        if (pref.isLoggedIn()) {
            Intent intent = new Intent(SmsActivity.this, MainActivity.class);
            intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TOP);
            startActivity(intent);

            finish();
        }

        adapter = new ViewPagerAdapter();
        viewPager.setAdapter(adapter);
        //viewPager.setOnP        viewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
            @Override            public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
            }

            @Override            public void onPageSelected(int position) {
            }

            @Override            public void onPageScrollStateChanged(int state) {

            }
        });


        /**         * Checking if the device is waiting for sms         * showing the user OTP screen         */        if (pref.isWaitingForSms()) {
            viewPager.setCurrentItem(1);
            layoutEditMobile.setVisibility(View.VISIBLE);
        }
    }

    @Override    public void onClick(View view) {
        switch (view.getId()) {
            case R.id.btn_request_sms:
                validateForm();
                break;

            case R.id.btn_verify_otp:
                verifyOtp();
                break;

            case R.id.btn_edit_mobile:
                viewPager.setCurrentItem(0);
                layoutEditMobile.setVisibility(View.GONE);
                pref.setIsWaitingForSms(false);
                break;
        }
    }

    /**     * Validating user details form     */    private void validateForm() {
        String name = inputName.getText().toString().trim();
        String email = inputEmail.getText().toString().trim();
        String mobile = inputMobile.getText().toString().trim();

        // validating empty name and email        if (name.length() == 0 || email.length() == 0) {
            Toast.makeText(getApplicationContext(), "Please enter your details", Toast.LENGTH_SHORT).show();
            return;
        }

        // validating mobile number        // it should be of 10 digits length        if (isValidPhoneNumber(mobile)) {

            // request for sms            progressBar.setVisibility(View.VISIBLE);

            // saving the mobile number in shared preferences            pref.setMobileNumber(mobile);

            // requesting for sms            requestForSMS(name, email, mobile);

        } else {
            Toast.makeText(getApplicationContext(), "Please enter valid mobile number", Toast.LENGTH_SHORT).show();
        }
    }

    /**     * Method initiates the SMS request on the server     *     * @param name   user name     * @param email  user email address     * @param mobile user valid mobile number     */    private void requestForSMS(final String name, final String email, final String mobile) {
        StringRequest strReq = new StringRequest(Request.Method.POST,
                Config.URL_REQUEST_SMS, new Response.Listener<String>() {

            @Override            public void onResponse(String response) {
                Log.d(TAG, response.toString());

                try {
                    JSONObject responseObj = new JSONObject(response);

                    // Parsing json object response                    // response will be a json object                    boolean error = responseObj.getBoolean("error");
                    String message = responseObj.getString("message");

                    // checking for error, if not error SMS is initiated                    // device should receive it shortly                    if (!error) {
                        // boolean flag saying device is waiting for sms                        pref.setIsWaitingForSms(true);

                        // moving the screen to next pager item i.e otp screen                        viewPager.setCurrentItem(1);
                        txtEditMobile.setText(pref.getMobileNumber());
                        layoutEditMobile.setVisibility(View.VISIBLE);

                        Toast.makeText(getApplicationContext(), message, Toast.LENGTH_SHORT).show();

                    } else {
                        Toast.makeText(getApplicationContext(),
                                "Error: " + message,
                                Toast.LENGTH_LONG).show();
                    }

                    // hiding the progress bar                    progressBar.setVisibility(View.GONE);

                } catch (JSONException e) {
                    Toast.makeText(getApplicationContext(),
                            "Error: " + e.getMessage(),
                            Toast.LENGTH_LONG).show();

                    progressBar.setVisibility(View.GONE);
                }

            }
        }, new Response.ErrorListener() {

            @Override            public void onErrorResponse(VolleyError error) {
                Log.e(TAG, "Error: " + error.getMessage());
                Toast.makeText(getApplicationContext(),
                        error.getMessage(), Toast.LENGTH_SHORT).show();
                progressBar.setVisibility(View.GONE);
            }
        }) {

            /**             * Passing user parameters to our server             * @return             */            @Override            protected Map<String, String> getParams() {
                Map<String, String> params = new HashMap<String, String>();
                params.put("name", name);
                params.put("email", email);
                params.put("mobile", mobile);

                Log.e(TAG, "Posting params: " + params.toString());

                return params;
            }

        };

        // Adding request to request queue        MyApplication.getInstance().addToRequestQueue(strReq);
    }

    /**     * sending the OTP to server and activating the user     */    private void verifyOtp() {
        String otp = inputOtp.getText().toString().trim();

        if (!otp.isEmpty()) {
            Intent grapprIntent = new Intent(getApplicationContext(), HttpService.class);
            grapprIntent.putExtra("otp", otp);
            startService(grapprIntent);
        } else {
            Toast.makeText(getApplicationContext(), "Please enter the OTP", Toast.LENGTH_SHORT).show();
        }
    }

    /**     * Regex to validate the mobile number     * mobile number should be of 10 digits length     *     * @param mobile     * @return     */    private static boolean isValidPhoneNumber(String mobile) {
        String regEx = "^[0-9]{10}$";
        return mobile.matches(regEx);
    }


    class ViewPagerAdapter extends PagerAdapter {

        @Override        public int getCount() {
            return 2;
        }

        @Override        public boolean isViewFromObject(View view, Object object) {
            return view == ((View) object);
        }

        public Object instantiateItem(View collection, int position) {

            int resId = 0;
            switch (position) {
                case 0:
                    resId = R.id.layout_sms;
                    break;
                case 1:
                    resId = R.id.layout_otp;
                    break;
            }
            return findViewById(resId);
        }
    }


}
6. Once the verification is done we need to display the Logged in screen. In this activity we need to fetch the data from shared preference and show it. Create a xml: toolbar.xml in res->layout
<?xml version="1.0" encoding="utf-8"?><android.support.v7.widget.Toolbar xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:local="http://schemas.android.com/apk/res-auto"    android:id="@+id/toolbar"    android:layout_width="match_parent"    android:layout_height="wrap_content"    android:minHeight="?attr/actionBarSize"    android:background="?attr/colorPrimary"    local:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"    local:popupTheme="@style/ThemeOverlay.AppCompat.Light" />
7. Now open this layout in main_activity i.e activity_main.xml
<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"    tools:context=".MainActivity">

    <LinearLayout        android:id="@+id/layout_toolbar"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:layout_alignParentTop="true"        android:orientation="vertical">

        <include            android:id="@+id/toolbar"            layout="@layout/toolbar" />
    </LinearLayout>

    <LinearLayout        android:id="@+id/layout_mobile"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_centerInParent="true"        android:orientation="vertical">

        <TextView            android:id="@+id/name"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:padding="10dp"            android:textSize="18dp" />

        <TextView            android:id="@+id/email"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:padding="10dp"            android:textSize="18dp" />

        <TextView            android:id="@+id/mobile"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:padding="10dp"            android:textSize="18dp" />

    </LinearLayout>
</RelativeLayout>
8. Now open menu_main.xml in menu and the below code
<menu 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"    tools:context=".MainActivity">
    <item        android:id="@+id/action_logout"        android:orderInCategory="100"        android:title="@string/action_logout"        app:showAsAction="always" />
</menu>
9. Now open MainActivity.java and add the below changes:
package marutsoft.com.smsverify.activity;

import android.content.Intent;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.TextView;

import java.util.HashMap;

import marutsoft.com.smsverify.R;
import marutsoft.com.smsverify.helper.PrefManager;

public class MainActivity extends AppCompatActivity {
private Toolbar toolbar;
    private PrefManager pref;
    private TextView name, email, mobile;

    @Override    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        toolbar = (Toolbar) findViewById(R.id.toolbar);
        name = (TextView) findViewById(R.id.name);
        email = (TextView) findViewById(R.id.email);
        mobile = (TextView) findViewById(R.id.mobile);

        // enabling toolbar        setSupportActionBar(toolbar);
        getSupportActionBar().setDisplayShowHomeEnabled(true);



        pref = new PrefManager(getApplicationContext());


        // Checking if user session        // if not logged in, take user to sms screen        if (!pref.isLoggedIn()) {
            logout();
        }

        // Displaying user information from shared preferences        HashMap<String, String> profile = pref.getUserDetails();
        name.setText("Name: " + profile.get("name"));
        email.setText("Email: " + profile.get("email"));
        mobile.setText("Mobile: " + profile.get("mobile"));
    }

    /**     * Logging out user     * will clear all user shared preferences and navigate to     * sms activation screen     */    private void logout() {
        pref.clearSession();

        Intent intent = new Intent(MainActivity.this, SmsActivity.class);
        intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TOP);

        startActivity(intent);

        finish();
    }


    @Override    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override    public boolean onOptionsItemSelected(MenuItem item) {
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement       if (id == R.id.action_logout) {
            logout();
            return true;
        }

        return super.onOptionsItemSelected(item);
    }
}
10. Now with the proper configurations in the config.java, You run this application and see if the values are stored to the database.
That's it. Happy Coding