My contribution to Mifos Android Client

Mifos(mifos.org) is  the open source financial software and it's mission is to provide banking solution to poor. It has complete range of financial services needed for an effective financial inclusion solution.

 Core engine which is java based have all the banking functionalities such as 

• creating loan product,saving product, Multiple Lending Methodologies such as Individual lending
• Grameen Joint Liability group lending
• Multi-tranche loans
• Standing instructions for automated payments
• co-op lending

Full Range of Deposit Products

• Passbook savings
• Fixed (term) deposits
• Recurring deposits
• Current accounts

Client facing android & web softwares have developed to interact with the core engine.

I have worked on both android & web application during my internship period.

My task was to add Surveys and Social Performance Management Scorecards in Mifos X Android Client. This Survey will be used to determine the financial condition of a person/family, based on the score in Survey it will determined whether they need financial help.

Backend server exposes the survey API. I have access the API endpoints to get active surveys from Server. Parsed the json to get survey questions & options. Capture the user response and post it back to server as scorecard.

Android recent material design used in the application. As Material design introduced in Android 5.0, to make it compatible with previous version app compat lib used in the app along with android design library.

What problem it solves?

This mobile survey tool will enable businesses to better understand the needs and interests of low-income consumers, while providing additional revenue for some of the world's poorest people.

What are the technical  challenges faced? 

•  Some of the Survey question have two selection option and some have eight options. So it was challenging for me to generate radiobutton dynamically.
• To transfer ArrayList of values from android fragment to activity. 
• To update the Scorecard( user response) while user decide to change the response. 

The survey API is available at https://demo.openmf.org/api-docs/apiLive.htm#surveys_create

Survey JSON has following structure 

So I fetched active surveys from Server and displayed in android listview.

When you select a particular survey it will take you to the question & options of that particular survey.

As few question have 2 options & few has 7 options, so it was challenging for me to display radiobutton dynamically based on the no of options. I have used viewpager widget to scroll to go to next question. 

I need to store QuestionId, ResponseId & ResponseValue of each question  and submit the scorecard value to Server.

Android provides a lot of options for storing data but the preference related settings can be easily stored and maintained using SharedPreferences class.

In this case I have used Android SharedPreferences to store and retrieve user selected responses . Create a separate SharedPreference utility class with methods to save, add, remove and get Scorecards from SharedPreferences.
Android SharedPreferences class does not provide a way to store a List or ArrayList or any collection. In order to store a list (even array, set or any collection) under a key, we convert the list (or collection) to JSON format using Gson and store it as string. While retrieving we convert the JSON string back to list and return it.

Layout Files.

fragment_survey_question.xml

	<?xml version="1.0" encoding="utf-8"?>
	<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
	android:layout_width="match_parent"
	android:layout_height="wrap_content"
	android:orientation="vertical"
	>
	<LinearLayout
	android:layout_width="match_parent"
	android:layout_height="wrap_content"
	android:padding="20dp"
	android:background="@color/primary"
	android:orientation="vertical" >
	<TextView
	android:id="@+id/survey_question_textView"
	android:layout_width="wrap_content"
	android:layout_height="wrap_content"
	android:layout_gravity="center"
	android:textSize="25sp"
	android:textColor="@android:color/white"
	android:text="Question"/>
	<TextView
	android:id="@+id/survey_question_no"
	android:layout_width="wrap_content"
	android:layout_height="wrap_content"
	android:layout_gravity="right"
	android:textSize="15sp"
	android:textColor="@android:color/white"
	/>
	</LinearLayout>
	<RadioGroup
	android:id="@+id/radio1"
	android:layout_width="wrap_content"
	android:layout_height="wrap_content"
	android:layout_marginLeft="5dip"
	android:layout_marginTop="5dip"
	android:background="#fff"
	>
	</RadioGroup>
	<View android:layout_width="wrap_content"
	android:layout_height="0dp"
	android:layout_weight="1" ></View>
	</LinearLayout>

view raw fragment_survey_question.xml hosted with ❤ by GitHub

row_survey_list_item.xml

	<?xml version="1.0" encoding="utf-8"?>
	<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
	android:layout_width="fill_parent" android:layout_height="match_parent"
	android:background="@drawable/card_blueborder"
	android:padding="8dp">
	<TextView
	android:layout_width="wrap_content"
	android:layout_height="wrap_content"
	android:textAppearance="?android:attr/textAppearanceMedium"
	android:text="survey_name"
	android:id="@+id/tv_survey_name"
	android:layout_alignParentTop="true"
	android:layout_alignParentLeft="true"
	android:layout_alignParentStart="true" />
	<TextView
	android:layout_width="wrap_content"
	android:layout_height="wrap_content"
	android:textAppearance="?android:attr/textAppearanceMedium"
	android:text="Description"
	android:id="@+id/tv_description"
	android:layout_below="@+id/tv_survey_name"
	android:layout_alignParentLeft="true"
	android:layout_alignParentStart="true" />
	</RelativeLayout>

view raw row_surveys_list_item.xml hosted with ❤ by GitHub

Scorecard.xml
In src folder, create a new class Scorecard in the package . 

	package com.mifos.objects.survey;
	import java.util.ArrayList;
	import java.util.Date;
	import java.util.List;
	/**
	* Created by Nasim Banu on 28,January,2016.
	*/
	public class Scorecard {
	private Long userId;
	private Long clientId;
	private Date createdOn;
	private List<ScorecardValues> scorecardValues;
	// private Integer value;
	public Scorecard() {
	super();
	}
	public Scorecard( final Long userId, final Long clientId,
	final Date createdOn, final List<ScorecardValues> scorecardValues) {
	super();
	this.userId = userId;
	this.clientId = clientId;
	this.createdOn = createdOn;
	this.scorecardValues= scorecardValues;
	}
	public Long getUserId() {
	return userId;
	}
	public void setUserId(Long userId) {
	this.userId = userId;
	}
	public Long getClientId() {
	return clientId;
	}
	public void setClientId(Long clientId) {
	this.clientId = clientId;
	}
	public Date getCreatedOn() {
	return createdOn;
	}
	public void setCreatedOn(Date createdOn) {
	this.createdOn = createdOn;
	}
	public List<ScorecardValues> getScorecardValues() {
	return scorecardValues;
	}
	public void setScorecardValues(List<ScorecardValues> scorecardValues ) {
	this.scorecardValues = scorecardValues;
	}
	}

view raw Scorecard.java hosted with ❤ by GitHub

SharedPreference class

Create a new class SharedPreference in the package . This class defines methods to save, add, remove and get Scorecards from SharedPreferences.Here we use Gson to convert List to JSON string in saveScorecards method and back again to List in getScorecards method.

	package com.mifos.utils;
	import android.content.Context;
	import android.content.SharedPreferences;
	import com.google.gson.Gson;
	import com.mifos.objects.survey.ScorecardValues;
	import java.util.ArrayList;
	import java.util.Arrays;
	import java.util.List;
	/**
	* Created by Nasim Banu on 28,January,2016.
	*/
	public class MyPreference {
	public static final String PREFS_NAME = "MY_PREFS";
	public static final String SCOREVALUES = "Score_Values";
	public static final String question_id = "question_id";
	public static final String response_id = "response_id";
	public static final String response_value = "response_value";
	public MyPreference (){
	super();
	}
	// This four methods are used for maintaining favorites.
	public void saveScorecards(Context context, List<ScorecardValues> scorecardValues) {
	SharedPreferences settings;
	SharedPreferences.Editor editor;
	settings = context.getSharedPreferences(PREFS_NAME,
	Context.MODE_PRIVATE);
	editor = settings.edit();
	//mcontext=context;
	Gson gson = new Gson();
	String jsonScores = gson.toJson(scorecardValues);
	editor.putString(SCOREVALUES, jsonScores);
	editor.commit();
	}
	public void addScorecard(Context context, ScorecardValues product) {
	List<ScorecardValues> scorecardValues = getScorecards(context);
	//mcontext=context;
	if (scorecardValues == null)
	scorecardValues = new ArrayList<ScorecardValues>();
	scorecardValues.add(product);
	saveScorecards(context, scorecardValues);
	}
	public boolean checkScoreQid(Context context,ScorecardValues checkProduct) {
	boolean check = false;
	List<ScorecardValues> scorecardValues = getScorecards(context);
	if (scorecardValues != null) {
	for (ScorecardValues product : scorecardValues) {
	if (product.getQuestionId() == checkProduct.getQuestionId()) {
	product.setResponseId(checkProduct.getResponseId()) ;
	product.setValue(checkProduct.getValue());
	// removeFavorite(context,product);
	check = true;
	break;
	}
	}
	saveScorecards(context, scorecardValues);
	}
	return check;
	}
	public void resetScorecard(Context context) {
	SharedPreferences settings;
	SharedPreferences.Editor editor;
	settings = context.getSharedPreferences(PREFS_NAME,
	Context.MODE_PRIVATE);
	editor = settings.edit();
	editor.clear();
	editor.commit();
	}
	public ArrayList<ScorecardValues> getScorecards(Context context) {
	SharedPreferences settings;
	List<ScorecardValues> scorecardValues;
	// mcontext=context;
	settings = context.getSharedPreferences(PREFS_NAME,
	Context.MODE_PRIVATE);
	if (settings.contains(SCOREVALUES)) {
	String jsonScores = settings.getString(SCOREVALUES, null);
	Gson gson = new Gson();
	ScorecardValues[] scoreItems = gson.fromJson(jsonScores,
	ScorecardValues[].class);
	scorecardValues = Arrays.asList(scoreItems);
	scorecardValues = new ArrayList<ScorecardValues>(scorecardValues);
	} else
	return null;
	return (ArrayList<ScorecardValues>) scorecardValues;
	}
	}

view raw MyPreference.java hosted with ❤ by GitHub

This file defines custom layout for ListView item which is used by SurveyListAdapter.
In src folder, create a new class SurveyListAdapter in the package . This is the custom list adapter class which displays survey name, description.
SurveyListAdapter

	package com.mifos.mifosxdroid.adapters;
	import android.content.Context;
	import android.content.res.Resources;
	import android.view.LayoutInflater;
	import android.view.View;
	import android.view.ViewGroup;
	import android.widget.TextView;
	import com.mifos.mifosxdroid.R;
	import com.mifos.objects.survey.Survey;
	import java.util.List;
	import butterknife.ButterKnife;
	import butterknife.InjectView;
	import android.widget.BaseAdapter;
	/**
	* Created by Nasim Banu on 27,January,2016.
	*/
	public class SurveyListAdapter extends BaseAdapter{
	private LayoutInflater layoutInflater;
	private List<Survey> listSurvey;
	private Resources resources;
	public SurveyListAdapter(Context context, List<Survey> listSurvey){
	layoutInflater = LayoutInflater.from(context);
	this.listSurvey = listSurvey;
	resources = context.getResources();
	}
	@Override
	public int getCount() {
	return this.listSurvey.size();
	}
	@Override
	public Survey getItem(int i) {
	return this.listSurvey.get(i);
	}
	@Override
	public long getItemId(int i) {
	return 0;
	}
	@Override
	public View getView(int i, View view, ViewGroup viewGroup) {
	ViewHolder viewHolder;
	if(view==null){
	view = layoutInflater.inflate(R.layout.row_surveys_list_item,viewGroup,false);
	viewHolder = new ViewHolder(view);
	view.setTag(viewHolder);
	}else{
	viewHolder = (ViewHolder) view.getTag();
	}
	final Survey survey = listSurvey.get(i);
	viewHolder.tv_survey_name.setText(survey.getName());
	viewHolder.tv_description.setText(survey.getDescription());
	return view;
	}
	public static class ViewHolder{
	@InjectView(R.id.tv_survey_name)
	TextView tv_survey_name;
	@InjectView(R.id.tv_description)
	TextView tv_description;
	public ViewHolder(View view) {
	ButterKnife.inject(this, view);
	}
	}
	}

view raw SurveyListAdapter.java hosted with ❤ by GitHub

SurveyQuestionFragment

In src folder, create a new class SurveyQuestionFragment in the package 

• This class displays list of questions and options.
• On radio button selection changed it adds that response in Scorecards by saving it in SharedPreferences. 

	package com.mifos.mifosxdroid.online;
	import android.app.Activity;
	import android.content.Context;
	import android.content.SharedPreferences;
	import android.os.Bundle;
	import android.support.v4.app.Fragment;
	import com.mifos.objects.survey.Survey;
	import com.mifos.objects.survey.ScorecardValues;
	import android.view.LayoutInflater;
	import android.view.View;
	import android.view.ViewGroup;
	import android.widget.Button;
	import android.widget.RadioButton;
	import android.widget.RadioGroup;
	import android.widget.TextView;
	import android.widget.Toast;
	import java.util.HashSet;
	import java.util.List;
	import com.mifos.mifosxdroid.R;
	import com.mifos.App;
	import com.mifos.utils.MyPreference;
	import retrofit.Callback;
	import retrofit.RetrofitError;
	import retrofit.client.Response;
	/**
	* Created by Nasim Banu on 28,January,2016.
	*/
	public class SurveyQuestionFragment extends Fragment {
	public interface OnAnswerSelectedListener {
	public void answer(int id, int qid,int rid,int rvalue,int chk);
	}
	// static Strings to retrieve the question and its answers and show them.
	public static final String QUESTION = "question";
	public static final String PREFS_NAME = "MY_PREFS";
	public static final String SCOREVALUES = "Score_Values";
	public static final String ANSWERS = "answers";
	public static final String ID = "id";
	public static final String SID = "sid";
	public static final String QSIZE = "qsize";
	//public static final int chk = 1;
	SharedPreferences sharedPreferences;
	private OnAnswerSelectedListener mCallback;
	List<ScorecardValues> scorecardValues ;
	ScorecardValues scorevalue;
	private TextView tvQuestion;
	private TextView tvQuestionNo;
	private RadioGroup radioGroup1;
	RadioButton button1;
	RadioButton btn;
	private Button btnNext;
	Context thiscontext;
	private Activity activity;
	private String text1;
	private boolean selected;
	private int Id;
	private int surveyId;
	private String[] answerarray;
	private int qId;
	private int qSize;
	private int qNo;
	private int rId;
	private int rValue;
	MyPreference myPreference;
	public static final SurveyQuestionFragment newInstance(int id, String question,int sid, String[] answers,int qsize) {
	SurveyQuestionFragment fragment = new SurveyQuestionFragment();
	Bundle bundle = new Bundle();
	bundle.putInt(ID, id);
	bundle.putInt(SID, sid);
	bundle.putInt(QSIZE, qsize);
	bundle.putString(QUESTION, question);
	bundle.putStringArray(ANSWERS, answers);
	fragment.setArguments(bundle);
	return fragment;
	}
	public void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	activity = getActivity();
	myPreference = new MyPreference();
	}
	@Override
	public View onCreateView(LayoutInflater inflater, ViewGroup container,
	Bundle savedInstanceState) {
	final View view = inflater.inflate(R.layout.fragment_survey_question, container, false);
	tvQuestion = (TextView) view.findViewById(R.id.survey_question_textView);
	tvQuestionNo = (TextView) view.findViewById(R.id.survey_question_no);
	thiscontext = container.getContext();
	radioGroup1 = (RadioGroup) view.findViewById(R.id.radio1);
	Id = getArguments().getInt(ID);
	qNo = Id+1;
	surveyId = getArguments().getInt(SID);
	qSize = getArguments().getInt(QSIZE);
	answerarray =getArguments().getStringArray(ANSWERS);
	setQuestion(getArguments().getString(QUESTION));
	// setAnswers(getArguments().getStringArray(ANSWERS));
	ViewGroup hourButtonLayout = (ViewGroup) view.findViewById(R.id.radio1);
	for (int i = 0; i < answerarray.length; i++) {
	button1 = new RadioButton(thiscontext);
	button1.setId(i);
	button1.setText(answerarray[i]);
	hourButtonLayout.addView(button1);
	radioGroup1.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
	public void onCheckedChanged(RadioGroup mRadioGroup2,
	int checkedId2) {
	for (int i = 0; i < mRadioGroup2.getChildCount(); i++) {
	btn = (RadioButton) mRadioGroup2.getChildAt(i);
	int t = mRadioGroup2.getId();
	System.out.println(t);
	if (btn.getId() == checkedId2) {
	text1 = btn.getText().toString();
	App.apiManager.getSurvey(surveyId, new Callback<Survey>() {
	@Override
	public void success(final Survey survey, Response response) {
	if (survey != null) {
	String qa = tvQuestion.getText().toString();
	int ival = 0;
	int k = 0;
	if (survey.getQuestionDatas() != null && survey.getQuestionDatas().size() > 0) {
	for (int i = 0; i < survey.getQuestionDatas().size(); i++) {
	if (survey.getQuestionDatas().get(i).getText().equals(qa)) {
	qId = survey.getQuestionDatas().get(i).getQuestionId();
	ival = i;
	qSize = survey.getQuestionDatas().size();
	}
	}
	for (int j = 0; j < survey.getQuestionDatas().get(ival).getResponseDatas().size(); j++) {
	if (survey.getQuestionDatas().get(ival).getResponseDatas().get(j).getText().equals(text1)) {
	rId = survey.getQuestionDatas().get(ival).getResponseDatas().get(j).getResponseId();
	rValue = survey.getQuestionDatas().get(ival).getResponseDatas().get(j).getValue();
	}
	}
	int chk = 1;
	mCallback.answer(Id, qId, rId, rValue, chk);
	}
	}
	}
	@Override
	public void failure(RetrofitError retrofitError) {
	Toast.makeText(getActivity(), "survey not found", Toast.LENGTH_SHORT).show();
	}
	});
	return;
	}
	}
	}
	});
	}
	tvQuestionNo.setText("question " + qNo + " of " +qSize);
	return view;
	}
	@Override
	public void onAttach(Activity activity) {
	super.onAttach(activity);
	// Activity = activity;
	try {
	mCallback = (OnAnswerSelectedListener) activity;
	} catch (ClassCastException e) {
	throw new ClassCastException(activity.toString()
	+ " must implement OnAnswerSelectedListener");
	}
	}
	public void setQuestion(String question){
	tvQuestion.setText(question);
	}
	@Override
	public void onActivityCreated(Bundle savedInstanceState) {
	super.onActivityCreated(savedInstanceState);
	}
	@Override
	public void onPause() {
	super.onPause();
	}

view raw SurveyQuestonFragment.java hosted with ❤ by GitHub

SurveyQuestion Activity

	package com.mifos.mifosxdroid.online;
	import android.content.Context;
	import android.content.Intent;
	import android.content.SharedPreferences;
	import android.os.Bundle;
	import android.preference.PreferenceManager;
	import android.support.v4.app.Fragment;
	import android.support.v4.app.FragmentActivity;
	import android.support.v4.view.PagerAdapter;
	import android.support.v4.view.ViewPager;
	import android.support.v7.app.ActionBarActivity;
	import com.mifos.mifosxdroid.adapters.SurveyPagerAdapter;
	import com.mifos.objects.survey.Scorecard;
	import com.mifos.objects.survey.ScorecardValues;
	import android.util.Log;
	import android.view.View;
	import android.widget.Button;
	import android.widget.Toast;
	import com.mifos.App;
	import com.mifos.mifosxdroid.R;
	import com.mifos.objects.survey.Survey;
	import com.mifos.api.model.ScorecardPayload;
	import com.mifos.utils.MyPreference;
	import java.util.ArrayList;
	import java.util.Date;
	import java.util.List;
	import java.util.Vector;
	import retrofit.Callback;
	import retrofit.RetrofitError;
	import retrofit.client.Response;
	import com.mifos.mifosxdroid.core.MifosBaseActivity;
	import android.support.v7.app.AppCompatActivity;
	/**
	* Created by Nasim Banu on 28,January,2016.
	*/
	public class SurveyQuestion extends MifosBaseActivity implements SurveyQuestionFragment.OnAnswerSelectedListener {
	private static final int CONTENT_VIEW_ID = 10101010;
	public Communicator fragmentCommunicator;
	private ViewPager pager = null;
	public static final String PREFS_NAME = "MY_PREFS";
	private Button btnNext;
	private Button btnSubmit;
	private Button btnPrevious;
	AppCompatActivity activity;
	private PagerAdapter mPagerAdapter = null;
	public static final String ID = "id";
	public static int surveyId;
	public static int qid;
	public static int pchk;
	public static int pfqid;
	public static int pfrid;
	public static int pfrvalue;
	public static boolean pfselect;
	private List<Fragment> fragments = null;
	SharedPreferences sharedPreferences;
	private String qs;
	ViewPager.OnPageChangeListener mPageChangeListener;
	MyPreference myPreference;
	Context context;
	List<ScorecardValues> scorecardValues;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	super.setContentView(R.layout.activity_survey_question);
	context = SurveyQuestion.this;
	myPreference = new MyPreference();
	myPreference.resetScorecard(this);
	btnNext = (Button) findViewById(R.id.btnNext);
	btnSubmit = (Button) findViewById(R.id.btnSubmit);
	btnPrevious = (Button) findViewById(R.id.btnPrevious);
	fragments = new Vector<Fragment>();
	showBackButton();
	Intent mIntent = getIntent();
	surveyId = mIntent.getIntExtra("SurveyId", 0);
	sharedPreferences = PreferenceManager.getDefaultSharedPreferences(context);
	SharedPreferences.Editor edt = sharedPreferences.edit();
	edt.putInt("SURVEY_ID", surveyId);
	edt.commit();
	App.apiManager.getSurvey(surveyId, new Callback<Survey>() {
	@Override
	public void success(final Survey survey, Response response) {
	if (survey != null) {
	String answer[] = new String[10];
	ArrayList<String> answerList = new ArrayList<String>();
	if (survey.getQuestionDatas() != null && survey.getQuestionDatas().size() > 0) {
	for (int i = 0; i < survey.getQuestionDatas().size(); i++) {
	qs = survey.getQuestionDatas().get(i).getText();
	qid = survey.getQuestionDatas().get(i).getQuestionId();
	if (survey.getQuestionDatas().get(i).getResponseDatas().size() > 0) {
	for (int j = 0; j < survey.getQuestionDatas().get(i).getResponseDatas().size(); j++) {
	answer[j] = survey.getQuestionDatas().get(i).getResponseDatas().get(j).getText();
	answerList.add(answer[j]);
	}
	}
	int qSize = survey.getQuestionDatas().size();
	String[] answerArr = new String[answerList.size()];
	answerArr = answerList.toArray(answerArr);
	fragments.add(SurveyQuestionFragment.newInstance(i, qs, surveyId, answerArr, qSize));
	answerList.clear();
	}
	fragments.add(SurveyLastFragment.newInstance(1, "You have reached the end of Survey"));
	mPagerAdapter.notifyDataSetChanged();
	}
	}
	}
	@Override
	public void failure(RetrofitError retrofitError) {
	Toast.makeText(SurveyQuestion.this, "Survey not found.", Toast.LENGTH_SHORT).show();
	}
	});
	this.mPagerAdapter = new SurveyPagerAdapter(super.getSupportFragmentManager(), fragments);
	pager = (ViewPager) super.findViewById(R.id.surveyPager);
	pager.setAdapter(this.mPagerAdapter);
	pager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
	@Override
	public void onPageSelected(int position) {
	ScorecardValues scorevalue = new ScorecardValues();
	scorevalue.setQuestionId(pfqid);
	scorevalue.setResponseId(pfrid);
	scorevalue.setValue(pfrvalue);
	if (myPreference.checkScoreQid(context, scorevalue)) {
	Log.i("previous removed: ", String.valueOf(pfrid));
	} else {
	myPreference.addScorecard(context, scorevalue);
	}
	if (pager.getCurrentItem() == mPagerAdapter.getCount() - 1) {
	btnNext.setVisibility(View.GONE);
	btnSubmit.setVisibility(View.VISIBLE);
	} else {
	btnNext.setVisibility(View.VISIBLE);
	btnSubmit.setVisibility(View.GONE);
	}
	if (pager.getCurrentItem() == 0) {
	btnPrevious.setVisibility(View.GONE);
	} else {
	btnPrevious.setVisibility(View.VISIBLE);
	}
	}
	@Override
	public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
	}
	@Override
	public void onPageScrollStateChanged(int state) {
	}
	});
	Button btnNext = (Button) findViewById(R.id.btnNext);
	btnNext.setOnClickListener(new View.OnClickListener() {
	public void onClick(View v) {
	ScorecardValues scorevalue = new ScorecardValues();
	scorevalue.setQuestionId(pfqid);
	scorevalue.setResponseId(pfrid);
	scorevalue.setValue(pfrvalue);
	if (myPreference.checkScoreQid(context, scorevalue)) {
	Log.i("previous removed: ", String.valueOf(pfrid));
	} else {
	myPreference.addScorecard(context, scorevalue);
	}
	int current = pager.getCurrentItem();
	final Toast toast = Toast.makeText(context, "You have not selected any option.", Toast.LENGTH_SHORT);
	if (pchk == 1 & current < fragments.size()) {
	pager.setCurrentItem(current + 1, true);
	toast.cancel();
	}
	{
	toast.show();
	pchk = 0;
	}
	}
	});
	Button btnPrevious = (Button) findViewById(R.id.btnPrevious);
	btnPrevious.setOnClickListener(new View.OnClickListener() {
	public void onClick(View v) {
	int current = pager.getCurrentItem();
	if (current < fragments.size())
	pager.setCurrentItem(current - 1, true);
	}
	});
	Button btnSubmit = (Button) findViewById(R.id.btnSubmit);
	btnSubmit.setOnClickListener(new View.OnClickListener() {
	public void onClick(View v) {
	scorecardValues = myPreference.getScorecards(context);
	int listSize = scorecardValues.size();
	for (int i = 0; i < listSize; i++) {
	Log.i("Response Value: ", scorecardValues.get(i).getValue().toString());
	Log.i("Question Id: ", scorecardValues.get(i).getQuestionId().toString());
	Log.i("Response Id: ", scorecardValues.get(i).getResponseId().toString());
	}
	sharedPreferences = PreferenceManager.getDefaultSharedPreferences(context);
	int clientId = sharedPreferences.getInt("CLIENT_ID", 0);
	int userId = sharedPreferences.getInt("USER_ID", 0);
	int surveyId = sharedPreferences.getInt("SURVEY_ID", 0);
	Date date = new Date();
	ScorecardPayload scorecardPayload = new ScorecardPayload();
	scorecardPayload.setUserId(userId);
	scorecardPayload.setClientId(clientId);
	scorecardPayload.setCreatedOn(date);
	scorecardPayload.setScorecardValues(scorecardValues);
	App.apiManager.submitScore(surveyId, scorecardPayload, new Callback<Scorecard>() {
	@Override
	public void success(Scorecard scorecard, Response response) {
	Toast.makeText(context, "Scorecard created successfully", Toast.LENGTH_LONG).show();
	}
	@Override
	public void failure(RetrofitError error) {
	Toast.makeText(context, "Try again", Toast.LENGTH_LONG).show();
	}
	});
	}
	});
	}
	@Override
	public void answer(int id, int fqid, int frid, int frValue, int chk) {
	pfqid = fqid;
	pfrid = frid;
	pfrvalue = frValue;
	pchk = chk;
	}
	}

view raw SurveyQuestion.java hosted with ❤ by GitHub

This is the main activity class.

• When the app starts, it begins a new FragmentTransaction and starts SurveyQuestionFragment.
• SurveyQuestionFragment is placed in Viewpager widget. When you scroll the widget it loads the next question in the series dynamically.
• When you go back and update selection,it updates Scorecard and saves in SharedPreference.

Output Screens