Create Android Quiz App with MySQL JSON Parsing and PHP

I have been testing my programming skills recently. So I was trying to study android by creating some simple applications by using Android studio. So, In this post i will share the code for creating an android quiz app. with this app, the user can select one answer from the four options available. The score of the quiz is also displayed at the end of the quiz.

Requirements for Creating Android Quiz app

• Computer with Android studio Installed
• Basic Knowledge about Android studio
• MySQL database (if you dont have a MySQL database, click here to learn more about free MySQL database)

About the Application

First of all. I will tell you what we are trying to achieve to give a basic idea about what we are about to create. In the Home screen you can see a button called start quiz. Now you will be redirected to a screen with a question and four options. user can select one option from the group and click submit. Now it will show the right answer in Green color text. Then, user can click next to go to next question. After completing the quiz, The score is displayed.

Setting up MySQL server for  Android app

First, we have to setup MySQL database for storing questions and answers. Open phpmyadmin and create a database. Inside the database, create a table called quiz_questions with 4 fields. The details of the fields inside the table are given below.

Enter some data to the table by using phpmyadmin. ID will be auto incremented. In the possible_answers field, Enter the options seperated by comma. In the correct answer field, enter which is the correct answer. if the third option is the correct answer, Enter the correct_answer field as 3.
Now copy the below code and paste in a notepad file. change the host, user,password and database name and save it as quiz.php .

	<?php
	$host="Your host name here";
	$username="Your user name here";
	$password="Your password here";
	$db_name="Your database name here";
	$con=mysql_connect("$host", "$username", "$password")or die("cannot connect");
	mysql_select_db("$db_name")or die("cannot select DB");
	$sql = "select * from quiz_questions ORDER BY RAND() LIMIT 10";
	$result = mysql_query($sql);
	$json = array();
	if(mysql_num_rows($result)){
	while($row=mysql_fetch_assoc($result)){
	$json['quiz_questions'][]=$row;
	}
	}
	mysql_close($con);
	echo json_encode($json);
	?>

view raw quiz.php hosted with ❤ by GitHub

Now upload this file to the root of your MySQL server by using file manager in your cpanel or by using FTP. Now try accessing the file by using,
http://yoursiteurl.com/quiz.php. If it is showing the data of your table successfully. Save the Url as we need it in future. Proceed with the below steps.

How to create Android quiz app

update (15/09/2017) : The apache http library is depreciated. So you have to add this compile statement in your App level build.gradle file(under dependencies)

compile 'org.jbundle.util.osgi.wrapped:org.jbundle.util.osgi.wrapped.org.apache.http.client:4.1.2'

view raw build.gradle (Module:App) hosted with ❤ by GitHub

• First of all. create a new project in Android Studio. Enter all the details. Select Blank activity, On next screen click finish
• In the activity_main.xml, paste the below code.

	<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">
	<Button
	android:layout_width="wrap_content"
	android:layout_height="wrap_content"
	android:id="@+id/button"
	android:text="Start Quiz"
	android:layout_alignParentTop="true"
	android:layout_marginTop="92dp"
	/>
	</RelativeLayout>

view raw activity_main.xml hosted with ❤ by GitHub

In the MainActivity.java, Paste the below code

	import android.app.AlertDialog;
	import android.content.Context;
	import android.content.DialogInterface;
	import android.content.Intent;
	import android.net.ConnectivityManager;
	import android.net.NetworkInfo;
	import android.net.Uri;
	import android.os.Bundle;
	import android.support.v7.app.ActionBarActivity;
	import android.view.Menu;
	import android.view.MenuItem;
	import android.view.View;
	import android.widget.Button;
	import android.widget.Toast;
	public class MainActivity extends ActionBarActivity {
	@Override
	protected void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	setContentView(R.layout.activity_main);
	Button startButton = (Button)findViewById(R.id.button);
	startButton.setOnClickListener(new View.OnClickListener() {
	@Override
	public void onClick(View v) {
	Intent intent = new Intent(MainActivity.this, QuizActivity.class);
	if(isNetworkStatusAvialable (getApplicationContext())) {
	startActivity(intent);
	}
	else {
	Toast.makeText(getApplicationContext(), "Internet not available", Toast.LENGTH_SHORT).show();
	}
	}
	});
	}
	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
	// Inflate the menu; this adds items to the action bar if it is present.
	getMenuInflater().inflate(R.menu.menu_main, menu);
	return true;
	}
	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
	// Handle action bar item clicks here. The action bar will
	// automatically handle clicks on the Home/Up button, so long
	// as you specify a parent activity in AndroidManifest.xml.
	int id = item.getItemId();
	//noinspection SimplifiableIfStatement
	if (id == R.id.action_settings) {
	return true;
	}
	return super.onOptionsItemSelected(item);
	}
	public void onBackPressed() {
	AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(
	MainActivity.this);
	// set title
	alertDialogBuilder.setTitle("Exit");
	/// set dialog message
	alertDialogBuilder
	.setMessage("Do you really want to exit?")
	.setCancelable(false)
	.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
	public void onClick(DialogInterface dialog,int id) {
	// if this button is clicked, close
	// current activity
	MainActivity.this.finish();
	Intent homeIntent = new Intent(Intent.ACTION_MAIN);
	homeIntent.addCategory( Intent.CATEGORY_HOME );
	homeIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
	startActivity(homeIntent);
	}
	})
	.setNegativeButton("No",new DialogInterface.OnClickListener() {
	public void onClick(DialogInterface dialog,int id) {
	// if this button is clicked, just close
	// the dialog box and do nothing
	dialog.cancel();
	}
	});
	// create alert dialog
	AlertDialog alertDialog = alertDialogBuilder.create();
	// show it
	alertDialog.show();
	}
	public static boolean isNetworkStatusAvialable (Context context) {
	ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
	if (connectivityManager != null)
	{
	NetworkInfo netInfos = connectivityManager.getActiveNetworkInfo();
	if(netInfos != null)
	if(netInfos.isConnected())
	return true;
	}
	return false;
	}
	}

view raw MainActivity.java hosted with ❤ by GitHub

Now create a new activity by right clicking on App and select New>>Activity>>Blank Activity
Name it as QuizActivity. In the activity_quiz.xml, paste below code

	<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="androidquizapplication.QuizActivity">
	<TextView
	android:layout_width="wrap_content"
	android:layout_height="wrap_content"
	android:text="@string/question"
	android:id="@+id/quiz_question"
	android:layout_alignParentTop="true"
	android:layout_marginLeft="10dp"
	android:layout_marginStart="10dp"
	android:layout_marginTop="20dp"
	android:textSize="20sp"
	android:textColor="#000000"
	android:layout_alignParentLeft="true"
	android:layout_alignParentStart="true"
	android:layout_alignParentRight="true"
	android:layout_alignParentEnd="true"
	android:layout_above="@+id/radioGroup" />
	<RadioGroup
	android:layout_width="wrap_content"
	android:layout_height="wrap_content"
	android:id="@+id/radioGroup"
	android:layout_centerVertical="true"
	android:layout_alignLeft="@+id/quiz_question"
	android:layout_alignStart="@+id/quiz_question">
	<RadioButton
	android:layout_height="wrap_content"
	android:layout_width="wrap_content"
	android:id="@+id/radio0"
	android:textSize="15sp"
	android:text="@string/app_name"
	android:layout_marginBottom="10dp"
	android:paddingLeft="20dp"/>
	<RadioButton
	android:layout_height="wrap_content"
	android:layout_width="wrap_content"
	android:id="@+id/radio1"
	android:textSize="15sp"
	android:text="@string/app_name"
	android:layout_marginBottom="10dp"
	android:paddingLeft="20dp"/>
	<RadioButton
	android:layout_height="wrap_content"
	android:layout_width="wrap_content"
	android:id="@+id/radio2"
	android:textSize="15sp"
	android:text="@string/app_name"
	android:layout_marginBottom="10dp"
	android:paddingLeft="20dp"/>
	<RadioButton
	android:layout_height="wrap_content"
	android:layout_width="wrap_content"
	android:id="@+id/radio3"
	android:textSize="15sp"
	android:text="@string/app_name"
	android:paddingLeft="20dp"/>
	</RadioGroup>
	<TextView
	android:layout_width="wrap_content"
	android:layout_height="wrap_content"
	android:id="@+id/resultView"
	android:layout_below="@+id/radioGroup"
	android:layout_alignLeft="@+id/radioGroup"
	android:layout_alignStart="@+id/radioGroup" />
	<Button
	android:layout_height="wrap_content"
	android:layout_width="160dp"
	android:gravity="center"
	android:id="@+id/nextquiz"
	android:text="Submit"
	android:padding="5dp"
	android:layout_alignTop="@+id/previousquiz"
	android:layout_alignRight="@+id/quiz_question"
	android:layout_alignEnd="@+id/quiz_question"/>
	<Button
	android:layout_height="wrap_content"
	android:layout_width="160dp"
	android:gravity="center"
	android:textColor="#ffffff"
	android:id="@+id/previousquiz"
	android:background="@drawable/quizbutton"
	android:text="@string/previous_questions"
	android:padding="5dp"
	android:layout_below="@+id/resultView"
	android:layout_alignParentLeft="true"
	android:layout_alignParentStart="true" />
	</RelativeLayout>

view raw activity_quiz.xml hosted with ❤ by GitHub

In the QuizActivity.java, Paste below code

	import android.app.ProgressDialog;
	import android.content.Intent;
	import android.content.pm.ActivityInfo;
	import android.graphics.Color;
	import android.os.AsyncTask;
	import android.os.Bundle;
	import android.support.v7.app.ActionBarActivity;
	import android.view.Menu;
	import android.view.MenuItem;
	import android.view.View;
	import android.widget.Button;
	import android.widget.RadioButton;
	import android.widget.RadioGroup;
	import android.widget.TextView;
	import android.widget.Toast;
	import org.apache.http.HttpResponse;
	import org.apache.http.client.ClientProtocolException;
	import org.apache.http.client.HttpClient;
	import org.apache.http.client.methods.HttpPost;
	import org.apache.http.impl.client.DefaultHttpClient;
	import org.apache.http.params.BasicHttpParams;
	import org.json.JSONArray;
	import org.json.JSONException;
	import org.json.JSONObject;
	import java.io.BufferedReader;
	import java.io.IOException;
	import java.io.InputStream;
	import java.io.InputStreamReader;
	import java.util.ArrayList;
	import java.util.List;
	public class QuizActivity extends ActionBarActivity {
	private TextView quizQuestion;
	private TextView result;
	private RadioGroup radioGroup;
	private RadioButton optionOne;
	private RadioButton optionTwo;
	private RadioButton optionThree;
	private RadioButton optionFour;
	private int currentQuizQuestion;
	private int quizCount;
	private QuizWrapper firstQuestion;
	private List<QuizWrapper> parsedObject;
	public int correctAnswerForQuestion;
	public int score;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	setContentView(R.layout.activity_quiz);
	setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
	quizQuestion = (TextView) findViewById(R.id.quiz_question);
	radioGroup = (RadioGroup) findViewById(R.id.radioGroup);
	optionOne = (RadioButton) findViewById(R.id.radio0);
	optionTwo = (RadioButton) findViewById(R.id.radio1);
	optionThree = (RadioButton) findViewById(R.id.radio2);
	optionFour = (RadioButton) findViewById(R.id.radio3);
	final Button previousButton = (Button) findViewById(R.id.previousquiz);
	Button nextButton = (Button) findViewById(R.id.nextquiz);
	result = (TextView) findViewById(R.id.resultView);
	AsyncJsonObject asyncObject = new AsyncJsonObject();
	asyncObject.execute("");
	nextButton.setOnClickListener(new View.OnClickListener() {
	@Override
	public void onClick(View v) {
	result.setText(" ");
	if (currentQuizQuestion >= quizCount) {
	final Intent intent = new Intent(QuizActivity.this, complete.class);
	startActivity(intent);
	return;
	} else {
	previousButton.setVisibility(Button.VISIBLE);
	optionOne.setTextColor(Color.BLACK);
	optionTwo.setTextColor(Color.BLACK);
	optionThree.setTextColor(Color.BLACK);
	optionFour.setTextColor(Color.BLACK);
	firstQuestion = parsedObject.get(currentQuizQuestion);
	quizQuestion.setText(firstQuestion.getQuestion());
	String[] possibleAnswers = firstQuestion.getAnswers().split(",");
	uncheckedRadioButton();
	optionOne.setText(possibleAnswers[0]);
	optionTwo.setText(possibleAnswers[1]);
	optionThree.setText(possibleAnswers[2]);
	optionFour.setText(possibleAnswers[3]);
	}
	}
	});
	previousButton.setOnClickListener(new View.OnClickListener() {
	@Override
	public void onClick(View v) {
	previousButton.setVisibility(Button.INVISIBLE);
	int radioSelected = radioGroup.getCheckedRadioButtonId();
	int userSelection = getSelectedAnswer(radioSelected);
	correctAnswerForQuestion = firstQuestion.getCorrectAnswer();
	if (userSelection == correctAnswerForQuestion) {
	// correct answer
	if (correctAnswerForQuestion==1)
	{
	optionOne.setTextColor(getResources().getColor(R.color.green));
	}
	else if (correctAnswerForQuestion==2)
	{
	optionTwo.setTextColor(getResources().getColor(R.color.green));
	}
	else if (correctAnswerForQuestion==3)
	{
	optionThree.setTextColor(getResources().getColor(R.color.green));
	}
	else if (correctAnswerForQuestion==4)
	{
	optionFour.setTextColor(getResources().getColor(R.color.green));
	}
	score=score+1;
	currentQuizQuestion++;
	} else {
	// failed question
	result.setTextColor(Color.parseColor("#FF0000"));
	if (correctAnswerForQuestion==1)
	{
	optionOne.setTextColor(getResources().getColor(R.color.green));
	}
	else if (correctAnswerForQuestion==2)
	{
	optionTwo.setTextColor(getResources().getColor(R.color.green));
	}
	else if (correctAnswerForQuestion==3)
	{
	optionThree.setTextColor(getResources().getColor(R.color.green));
	}
	else if (correctAnswerForQuestion==4)
	{
	optionFour.setTextColor(getResources().getColor(R.color.green));
	}
	currentQuizQuestion++;
	return;
	}
	}
	});
	}
	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
	// Inflate the menu; this adds items to the action bar if it is present.
	getMenuInflater().inflate(R.menu.menu_quiz, menu);
	return true;
	}
	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
	// Handle action bar item clicks here. The action bar will
	// automatically handle clicks on the Home/Up button, so long
	// as you specify a parent activity in AndroidManifest.xml.
	int id = item.getItemId();
	//noinspection SimplifiableIfStatement
	if (id == R.id.action_settings) {
	return true;
	}
	return super.onOptionsItemSelected(item);
	}
	private class AsyncJsonObject extends AsyncTask<String, Void, String> {
	private ProgressDialog progressDialog;
	@Override
	protected String doInBackground(String... params) {
	HttpClient httpClient = new DefaultHttpClient(new BasicHttpParams());
	HttpPost httpPost = new HttpPost("http://yoursite.com/quiz.php");
	String jsonResult = "";
	try {
	HttpResponse response = httpClient.execute(httpPost);
	jsonResult = inputStreamToString(response.getEntity().getContent()).toString();
	System.out.println("Returned Json object " + jsonResult.toString());
	} catch (ClientProtocolException e) {
	// TODO Auto-generated catch block
	e.printStackTrace();
	} catch (IOException e) {
	// TODO Auto-generated catch block
	e.printStackTrace();
	}
	return jsonResult;
	}
	@Override
	protected void onPreExecute() {
	// TODO Auto-generated method stub
	super.onPreExecute();
	progressDialog = ProgressDialog.show(QuizActivity.this, "Loading Quiz", "Please Wait....", true);
	}
	@Override
	protected void onPostExecute(String result) {
	super.onPostExecute(result);
	progressDialog.dismiss();
	System.out.println("Resulted Value: " + result);
	parsedObject = returnParsedJsonObject(result);
	if (parsedObject == null) {
	return;
	}
	quizCount = parsedObject.size();
	firstQuestion = parsedObject.get(0);
	quizQuestion.setText(firstQuestion.getQuestion());
	String[] possibleAnswers = firstQuestion.getAnswers().split(",");
	optionOne.setText(possibleAnswers[0]);
	optionTwo.setText(possibleAnswers[1]);
	optionThree.setText(possibleAnswers[2]);
	optionFour.setText(possibleAnswers[3]);
	}
	private StringBuilder inputStreamToString(InputStream is) {
	String rLine = "";
	StringBuilder answer = new StringBuilder();
	BufferedReader br = new BufferedReader(new InputStreamReader(is));
	try {
	while ((rLine = br.readLine()) != null) {
	answer.append(rLine);
	}
	} catch (IOException e) {
	// TODO Auto-generated catch block
	e.printStackTrace();
	}
	return answer;
	}
	}
	private List<QuizWrapper> returnParsedJsonObject(String result) {
	List<QuizWrapper> jsonObject = new ArrayList<QuizWrapper>();
	JSONObject resultObject = null;
	JSONArray jsonArray = null;
	QuizWrapper newItemObject = null;
	try {
	resultObject = new JSONObject(result);
	System.out.println("Testing the water " + resultObject.toString());
	jsonArray = resultObject.optJSONArray("quiz_questions");
	} catch (JSONException e) {
	e.printStackTrace();
	}
	for (int i = 0; i < jsonArray.length(); i++) {
	JSONObject jsonChildNode = null;
	try {
	jsonChildNode = jsonArray.getJSONObject(i);
	int id = jsonChildNode.getInt("id");
	String question = jsonChildNode.getString("question");
	String answerOptions = jsonChildNode.getString("possible_answers");
	int correctAnswer = jsonChildNode.getInt("correct_answer");
	newItemObject = new QuizWrapper(id, question, answerOptions, correctAnswer);
	jsonObject.add(newItemObject);
	} catch (JSONException e) {
	e.printStackTrace();
	}
	}
	return jsonObject;
	}
	private int getSelectedAnswer(int radioSelected) {
	int answerSelected = 0;
	if (radioSelected == R.id.radio0) {
	answerSelected = 1;
	}
	if (radioSelected == R.id.radio1) {
	answerSelected = 2;
	}
	if (radioSelected == R.id.radio2) {
	answerSelected = 3;
	}
	if (radioSelected == R.id.radio3) {
	answerSelected = 4;
	}
	return answerSelected;
	}
	private void uncheckedRadioButton() {
	optionOne.setChecked(false);
	optionTwo.setChecked(false);
	optionThree.setChecked(false);
	optionFour.setChecked(false);
	radioGroup.clearCheck();
	}
	public class QuizWrapper {
	private int id;
	private String question;
	private String answers;
	private int correctAnswer;
	public QuizWrapper(int id, String question, String answers, int correctAnswer) {
	this.id = id;
	this.question = question;
	this.answers = answers;
	this.correctAnswer = correctAnswer;
	}
	public int getId() {
	return id;
	}
	public void setId(int id) {
	this.id = id;
	}
	public String getQuestion() {
	return question;
	}
	public void setQuestion(String question) {
	this.question = question;
	}
	public String getAnswers() {
	return answers;
	}
	public void setAnswers(String answers) {
	this.answers = answers;
	}
	public int getCorrectAnswer() {
	return correctAnswer;
	}
	public void setCorrectAnswer(int correctAnswer) {
	this.correctAnswer = correctAnswer;
	}
	}
	}

view raw QuizActivity.java hosted with ❤ by GitHub

In line number 185, you can see a space for a url. Paste the url for the MySQL server you created earlier. it will be like http://yoursite.com/quiz.php
Now Create another activitylike above and name it as complete
Paste the below code in activity_complete.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" 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="app.quiz.com.quiz2016.complete">
	<TextView android:text="Quiz Complete" android:layout_width="wrap_content"
	android:layout_height="wrap_content"
	android:layout_above="@+id/restart"
	android:layout_alignLeft="@+id/restart"
	android:layout_alignStart="@+id/restart"
	android:layout_marginBottom="85dp" />
	<Button
	android:layout_width="wrap_content"
	android:layout_height="wrap_content"
	android:id="@+id/restart"
	android:text="PLAY AGAIN"
	android:onClick="restartQuiz"
	android:layout_above="@+id/mainmenu"
	android:layout_alignLeft="@+id/mainmenu"
	android:layout_alignStart="@+id/mainmenu" />
	<Button
	android:layout_width="wrap_content"
	android:layout_height="wrap_content"
	android:id="@+id/mainmenu"
	android:text="Main Menu"
	android:onClick="mainMenu"
	android:layout_centerVertical="true"
	android:layout_centerHorizontal="true" />
	</RelativeLayout>

view raw activity_complete.xml hosted with ❤ by GitHub

Now in the complete.java, Paste the below code

	import android.app.AlertDialog;
	import android.content.DialogInterface;
	import android.content.Intent;
	import android.support.v7.app.ActionBarActivity;
	import android.os.Bundle;
	import android.view.Menu;
	import android.view.MenuItem;
	import android.view.View;
	public class complete extends ActionBarActivity {
	@Override
	protected void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	setContentView(R.layout.activity_complete);
	int score = getIntent().getExtras().getInt("score");
	AlertDialog.Builder builder = new AlertDialog.Builder(complete.this);
	builder.setTitle("Quiz Complete");
	builder.setMessage("Your Score is: " +score+ " out of 10");
	builder.setPositiveButton("Play Again", new DialogInterface.OnClickListener() {
	public void onClick(DialogInterface dialog, int id) {
	//do things
	Intent intent = new Intent(complete.this, QuizActivity.class);
	startActivity(intent);
	}
	});
	builder.setNegativeButton("Done", new DialogInterface.OnClickListener() {
	public void onClick(DialogInterface dialog, int id) {
	//do things
	}
	});
	AlertDialog alert = builder.create();
	alert.show();
	}
	public void restartQuiz(View view)
	{
	Intent intent = new Intent(complete.this, QuizActivity.class);
	startActivity(intent);
	}
	public void mainMenu(View view)
	{
	Intent intent = new Intent(complete.this, MainActivity.class);
	startActivity(intent);
	}
	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
	// Inflate the menu; this adds items to the action bar if it is present.
	getMenuInflater().inflate(R.menu.menu_complete, menu);
	return true;
	}
	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
	// Handle action bar item clicks here. The action bar will
	// automatically handle clicks on the Home/Up button, so long
	// as you specify a parent activity in AndroidManifest.xml.
	int id = item.getItemId();
	//noinspection SimplifiableIfStatement
	if (id == R.id.action_settings) {
	return true;
	}
	return super.onOptionsItemSelected(item);
	}
	}

view raw complete.java hosted with ❤ by GitHub

Now, Open strings.xml from res>>values>>strings.xml
Inside resources tag, paste the below code

	<string name="question">Please wait....</string>
	<string name="answer_one"></string>
	<string name="answer_two"></string>
	<string name="answer_three"></string>
	<string name="answer_four"></string>
	<string name="next_questions">Next</string>
	<string name="previous_questions">Submit</string>

view raw strings.xml hosted with ❤ by GitHub

Thats all. Now try to run the application. Hoorah..  Thats it.
if you face any errors feel free to comment below. I will try to reply as soon as possible.

Author : admin

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