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QuizActivity.java
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QuizActivity.java
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/*
* Copyright 2017 Kaushik N. Sanji
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.example.kaushiknsanji.birdquiz;
import android.app.FragmentManager;
import android.content.Intent;
import android.content.res.Configuration;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Color;
import android.graphics.Rect;
import android.graphics.Typeface;
import android.graphics.drawable.LevelListDrawable;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.Build;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.annotation.StringRes;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.text.Html;
import android.text.InputType;
import android.util.Log;
import android.util.TypedValue;
import android.view.Gravity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.RelativeLayout;
import android.widget.ScrollView;
import android.widget.TableLayout;
import android.widget.TableRow;
import android.widget.TextView;
import android.widget.Toast;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Random;
import java.util.concurrent.TimeUnit;
/**
* The Main and the second Activity class of the Quiz app that shows the layout "R.layout.activity_quiz"
* where the user is presented with the Quiz screen having the questions and options to answer and score
*
* @author Kaushik N Sanji
*/
public class QuizActivity extends AppCompatActivity
implements CompoundButton.OnCheckedChangeListener,
View.OnClickListener,
ImageDownloaderTaskFragment.ImageDownloaderListener,
CountDownLatchFragment.CountDownLatchListener,
FinalScoreDialogFragment.FinalScoreDialogListener {
private static final String TAG = QuizActivity.class.getSimpleName();
//Bundle Key Constants for saving/restoring
private static final String QUESTION_STR_ARRAY_KEY = "QuestionArray";
private static final String OPTION_STR_ARRAY_KEY = "OptionArray";
private static final String HINT_STR_ARRAY_KEY = "HintArray";
private static final String QUESTION_INDEX_ORDER_STR_ARRAY_KEY = "QuestionIndexOrderArray";
private static final String OPTION_INDEX_ORDER_STR_KEY = "OptionIndexOrder";
private static final String SELECTED_ANSWER_STR_LIST_KEY = "SelectedAnswerList";
private static final String SELECTED_INDEX_ORDER_STR_KEY = "SelectedIndexOrder";
private static final String CORRECT_ANSWER_STR_LIST_KEY = "CorrectAnswerList";
private static final String TOTAL_QUESTIONS_INT_KEY = "TotalNumberOfQuestions";
private static final String QUESTIONS_TO_LOAD_INT_KEY = "NoOfQuestionsToLoad";
private static final String FIRST_TIME_LAUNCH_BOOL_KEY = "FirstTimeLaunch";
private static final String CURRENT_QUESTION_NO_INT_KEY = "CurrentQuestionNo";
private static final String CURRENT_USER_SCORE_INT_KEY = "CurrentUserScore";
private static final String CURRENT_QUESTION_INDEX_INT_KEY = "CurrentQuestionIndex";
private static final String FUTURE_QUESTION_INDEX_INT_KEY = "FutureQuestionIndex";
private static final String HINT_BUTTON_STATE_BOOL_KEY = "HintButtonState";
private static final String HINT_BUTTON_PRESSED_BOOL_KEY = "HintButtonPressed";
private static final String TEXTUAL_QUESTION_BOOL_KEY = "IsTextualQuestion";
private static final String TEXTUAL_USER_INPUT_STR_KEY = "TextualUserInput";
private static final String ACTIVITY_STATE_STR_KEY = "ActivityState";
private static final String SUBMIT_BUTTON_STATE_STR_KEY = "SubmitButtonState";
//Bundle Key Constants for Option Container view "R.id.option_container_area_id"
private static final String EXISTING_CHILD_COUNT_INT_KEY = "ExistingChildCount";
private static final String EXISTING_CHILD_TYPE_STR_KEY = "ExistingChildType";
//Stores the complete list of questions
private String[] mQuestionArray;
//Stores the list of Options for the current question
private String[] mOptionArray;
//Stores the list of Hints for the current question
private String[] mHintArray;
//Stores the current index list of questions to be loaded in String array
private String[] mQuestionIndexOrderArray;
//Stores the index list of options to be loaded for the current question in some order
private String mOptionIndexOrderStr;
//Stores the Answers selected by the user
private ArrayList<String> mSelectedAnswerList;
//Stores the index of the Answers selected by the user. (Used only for restoring)
private String mSelectedIndexOrderStr;
//Stores the list of correct Answers for the current question
private ArrayList<String> mCorrectAnswerList;
//Stores the Views that would be accessed frequently
private TextView mQuestionNumberTextView;
private TextView mTotalScoreTextView;
private TextView mQuestionTextView;
private TextView mHintTextView;
private Button mSubmitButtonView;
private Button mShowHintButtonView;
private ImageButton mImageRedirectButtonView;
private RelativeLayout mOptionContainerView;
private LinearLayout mHintContentView;
private ScrollView mScrollableContentView;
private ImageView mHintImageView;
private TextView mCountDownTextView;
//Stores total number of questions in the resources
private int mTotalNumberOfQuestions;
//Stores the number of questions to load
private int mNoOfQuestionsToLoad;
//Stores the state of whether the app was launched for the first time
//Defaulting to FALSE
private boolean mFirstTimeLaunch = false;
//Stores whether the onCreate was invoked when the app resumes
//Defaulting to FALSE
private boolean onCreateInvoked = false;
//Stores the current question number being displayed. Defaulting to 0
private int mCurrentQuestionNo = 0;
//Stores the current question index from the list
private int mCurrentQuestionIndex;
//Stores the Next question index from the list. Defaulting to 0;
private int mFutureQuestionIndex = 0;
//Stores whether the Hint button is enabled(True)/disabled(False)
private boolean mHintButtonState = false;
//Stores whether the Hint button was pressed
private boolean mHintButtonPressed = false;
//Stores whether the question is text based or not (False when not)
private boolean mIsTextualQuestion = false;
//Stores the EditText view for the textual question
private EditText mTextOptionView;
//Stores the EditText view content for the textual question
private String mTextualUserInputStr;
//Stores the Image downloaded from a URL (Used as a Hint image)
private Bitmap mDownloadedBitmap;
//Stores the Image downloaded from a URL for the next question in advance
private Bitmap mPrefetchedBitmap;
//Fragment Tasks for downloading the hint images
private ImageDownloaderTaskFragment mCurrentBitmapTaskFragment;
private ImageDownloaderTaskFragment mFutureBitmapTaskFragment;
//CountDownLatchFragment Fragment that manages the CountDownTimer
private CountDownLatchFragment mCountDownLatchFragment;
//Stores the activity state
private String mActivityStateStr;
//Monitors the RadioButtons added in the layout "R.id.option_container_area_id"
private ArrayList<RadioButton> mVirtualRadioGrpList;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_quiz);
Log.i(TAG, "onCreate: Started");
//Setting the onCreate flag to TRUE
onCreateInvoked = true;
if (savedInstanceState == null) {
//If loading for the first time
Log.i(TAG, "onCreate: Started, launching for the first time");
//Retrieving the list of questions from Array resource "question_array"
mQuestionArray = getResources().getStringArray(R.array.question_array);
mTotalNumberOfQuestions = mQuestionArray.length;
//Retrieving the number of questions to load
Intent welcomeIntent = getIntent();
mNoOfQuestionsToLoad = welcomeIntent.getIntExtra(getString(R.string.total_question_opt_value), 1);
//Setting the state of launch to True
mFirstTimeLaunch = true;
}
FragmentManager fragmentManager = getFragmentManager();
//Initializing the Fragment for Current Download Task: START
mCurrentBitmapTaskFragment = (ImageDownloaderTaskFragment) fragmentManager.findFragmentByTag(ImageDownloaderTaskFragment.TAG_CURRENT_TASK);
if (mCurrentBitmapTaskFragment == null) {
//When the Fragment for the Current question download task is added for the first time
//Initializing the {@link ImageDownloaderTaskFragment}
mCurrentBitmapTaskFragment = new ImageDownloaderTaskFragment();
//Adding the Fragment to this Activity
fragmentManager.beginTransaction().add(mCurrentBitmapTaskFragment, ImageDownloaderTaskFragment.TAG_CURRENT_TASK).commit();
}
//Initializing the Fragment for Current Download Task: END
//Initializing the Fragment for Future Download Task: START
mFutureBitmapTaskFragment = (ImageDownloaderTaskFragment) fragmentManager.findFragmentByTag(ImageDownloaderTaskFragment.TAG_FUTURE_TASK);
if (mFutureBitmapTaskFragment == null) {
//When the Fragment for the Future question download task is added for the first time
//Initializing the {@link ImageDownloaderTaskFragment}
mFutureBitmapTaskFragment = new ImageDownloaderTaskFragment();
//Adding the Fragment to this Activity
fragmentManager.beginTransaction().add(mFutureBitmapTaskFragment, ImageDownloaderTaskFragment.TAG_FUTURE_TASK).commit();
}
//Initializing the Fragment for Future Download Task: END
//Initializing the Fragment for CountDownTimer: START
mCountDownLatchFragment = (CountDownLatchFragment) fragmentManager.findFragmentByTag(CountDownLatchFragment.TAG);
if (mCountDownLatchFragment == null) {
//When the Fragment is being added for the first time
//Initializing the {@link CountDownLatchFragment}
mCountDownLatchFragment = new CountDownLatchFragment();
//Adding the Fragment to this Activity
fragmentManager.beginTransaction().add(mCountDownLatchFragment, CountDownLatchFragment.TAG).commit();
//Calculating the timer value to be set (45 Seconds for each question)
long millisUntilFinished = TimeUnit.SECONDS.toMillis(mNoOfQuestionsToLoad * 45);
//Setting the CountDownTimer timer start value
mCountDownLatchFragment.setStartTimeInMillis(millisUntilFinished);
}
//Initializing the Fragment for CountDownTimer: END
//Retrieving the Views that will be accessed frequently: START
mQuestionNumberTextView = findViewById(R.id.question_no_id);
mTotalScoreTextView = findViewById(R.id.total_score_id);
mQuestionTextView = findViewById(R.id.question_text_id);
mHintTextView = findViewById(R.id.hint_text_box_id);
mSubmitButtonView = findViewById(R.id.submit_button_id);
mShowHintButtonView = findViewById(R.id.show_hint_button_id);
mImageRedirectButtonView = findViewById(R.id.image_redirect_button_id);
mOptionContainerView = findViewById(R.id.option_container_area_id);
mScrollableContentView = findViewById(R.id.vscroll_content_area_id);
mHintContentView = findViewById(R.id.hint_content_box_id);
mHintImageView = findViewById(R.id.hint_image_id);
mCountDownTextView = findViewById(R.id.count_down_text_id);
//Retrieving the Views that will be accessed frequently: END
//Initializing the RadioButton Monitor ArrayList
mVirtualRadioGrpList = new ArrayList<>();
//Adding Click Listeners on Buttons
setClickListenersOnButtons();
}
//Called when the Activity is beginning to start
@Override
protected void onStart() {
super.onStart();
Log.i(TAG, "onStart: Started");
//Initializing components only when it was launched for the first time
if (mFirstTimeLaunch) {
init();
}
}
//Called by the Activity after Start when the activity is being reinitialized
@Override
protected void onRestoreInstanceState(Bundle savedInstanceState) {
super.onRestoreInstanceState(savedInstanceState);
Log.i(TAG, "onRestoreInstanceState");
mFirstTimeLaunch = savedInstanceState.getBoolean(FIRST_TIME_LAUNCH_BOOL_KEY);
mCurrentQuestionNo = savedInstanceState.getInt(CURRENT_QUESTION_NO_INT_KEY);
mCurrentQuestionIndex = savedInstanceState.getInt(CURRENT_QUESTION_INDEX_INT_KEY);
mQuestionArray = savedInstanceState.getStringArray(QUESTION_STR_ARRAY_KEY);
mQuestionIndexOrderArray = savedInstanceState.getStringArray(QUESTION_INDEX_ORDER_STR_ARRAY_KEY);
mOptionArray = savedInstanceState.getStringArray(OPTION_STR_ARRAY_KEY);
mHintArray = savedInstanceState.getStringArray(HINT_STR_ARRAY_KEY);
mOptionIndexOrderStr = savedInstanceState.getString(OPTION_INDEX_ORDER_STR_KEY);
mSelectedAnswerList = savedInstanceState.getStringArrayList(SELECTED_ANSWER_STR_LIST_KEY);
mSelectedIndexOrderStr = savedInstanceState.getString(SELECTED_INDEX_ORDER_STR_KEY);
mCorrectAnswerList = savedInstanceState.getStringArrayList(CORRECT_ANSWER_STR_LIST_KEY);
mTotalNumberOfQuestions = savedInstanceState.getInt(TOTAL_QUESTIONS_INT_KEY);
mNoOfQuestionsToLoad = savedInstanceState.getInt(QUESTIONS_TO_LOAD_INT_KEY);
mFutureQuestionIndex = savedInstanceState.getInt(FUTURE_QUESTION_INDEX_INT_KEY);
mHintButtonState = savedInstanceState.getBoolean(HINT_BUTTON_STATE_BOOL_KEY);
mHintButtonPressed = savedInstanceState.getBoolean(HINT_BUTTON_PRESSED_BOOL_KEY);
mIsTextualQuestion = savedInstanceState.getBoolean(TEXTUAL_QUESTION_BOOL_KEY);
mTextualUserInputStr = savedInstanceState.getString(TEXTUAL_USER_INPUT_STR_KEY);
mActivityStateStr = savedInstanceState.getString(ACTIVITY_STATE_STR_KEY);
//Retrieving the score
int currentUserScore = savedInstanceState.getInt(CURRENT_USER_SCORE_INT_KEY);
//Retrieving the submit button state
String submitButtonStateStr = savedInstanceState.getString(SUBMIT_BUTTON_STATE_STR_KEY);
//reinitializing the screen components for current question
reloadCurrentQuestion(currentUserScore, submitButtonStateStr);
}
//Called by the Activity when it is prepared to be shown
@Override
protected void onResume() {
super.onResume();
Log.i(TAG, "onResume: Started");
//Setting the activity state to Active
mActivityStateStr = QuizActivityState.ACTIVE.toString();
//Retrieving the ProgressBar Dialog Fragment
ProgressDialogFragment progressDialogFragment = (ProgressDialogFragment) getFragmentManager().findFragmentByTag(ProgressDialogFragment.TAG_PROGRESS_DIALOG);
//Updating the CountDownTimer: START
FragmentManager fragmentManager = getFragmentManager();
mCountDownLatchFragment = (CountDownLatchFragment) fragmentManager.findFragmentByTag(CountDownLatchFragment.TAG);
//Retrieving the remaining time in millis
long millisUntilFinished = mCountDownLatchFragment.getRemainingTimeInMillis();
//Updating the Timer Text field "R.id.count_down_text_id"
updateTimerText(millisUntilFinished);
if (mDownloadedBitmap != null) {
//When the Current Image is already downloaded
if (progressDialogFragment != null) {
//When the ProgressBar Dialog is active, dismiss the Dialog and resume the timer
dismissProgressDialog();
} else if (mCountDownLatchFragment.getTimerState().equals(CountDownLatchFragment.TimerState.INACTIVE.toString())
&& !mSubmitButtonView.getText().equals(getString(R.string.finish_button_text))) {
//If the ProgressBar Dialog is Inactive and the state of the CountDownTimer is Inactive
//with the Submit button Text not in FINISH
//then resume the CountDownTimer
mCountDownLatchFragment.resumeTimer();
}
}
//Ending the Quiz if time has already elapsed
if (millisUntilFinished == 0) {
showScoreSummary(true);
} else {
//When the quiz time has not yet elapsed
if (progressDialogFragment == null
&& mCountDownLatchFragment.getTimerState().equals(CountDownLatchFragment.TimerState.ACTIVE.toString())) {
//Updating the timer image to timer_start when there is no active progress dialog
//and when the state of the timer is ACTIVE
mCountDownTextView.setCompoundDrawablesWithIntrinsicBounds(R.drawable.ic_timer, 0, 0, 0);
}
}
//Updating the CountDownTimer: END
if (progressDialogFragment == null
&& !onCreateInvoked
&& !mSubmitButtonView.getText().equals(getString(R.string.finish_button_text))) {
//When the Progress Dialog is not active and the activity resumed from onStart (not onCreate)
//with the Submit button Text not in FINISH
//then display the below funny toast message
Toast.makeText(this, R.string.app_resumed_toast_text, Toast.LENGTH_SHORT).show();
}
}
//Called by the Activity when the activity loses focus
@Override
protected void onPause() {
super.onPause();
Log.i(TAG, "onPause");
//Setting the activity state to Inactive
mActivityStateStr = QuizActivityState.INACTIVE.toString();
if (isFinishing()) {
Log.i(TAG, "onPause: isFinishing");
//Clearing the Bitmap Cache when the activity is finishing
BitmapImageCache.clearCache();
}
}
//Called by the Activity before Stop, to save the activity's state in the Bundle
@Override
protected void onSaveInstanceState(Bundle outState) {
Log.i(TAG, "onSaveInstanceState");
outState.putStringArray(QUESTION_STR_ARRAY_KEY, mQuestionArray);
outState.putStringArray(OPTION_STR_ARRAY_KEY, mOptionArray);
outState.putStringArray(HINT_STR_ARRAY_KEY, mHintArray);
outState.putStringArray(QUESTION_INDEX_ORDER_STR_ARRAY_KEY, mQuestionIndexOrderArray);
outState.putString(OPTION_INDEX_ORDER_STR_KEY, mOptionIndexOrderStr);
outState.putStringArrayList(SELECTED_ANSWER_STR_LIST_KEY, mSelectedAnswerList);
outState.putString(SELECTED_INDEX_ORDER_STR_KEY, mSelectedIndexOrderStr);
outState.putStringArrayList(CORRECT_ANSWER_STR_LIST_KEY, mCorrectAnswerList);
outState.putInt(TOTAL_QUESTIONS_INT_KEY, mTotalNumberOfQuestions);
outState.putInt(QUESTIONS_TO_LOAD_INT_KEY, mNoOfQuestionsToLoad);
outState.putBoolean(FIRST_TIME_LAUNCH_BOOL_KEY, mFirstTimeLaunch);
outState.putInt(CURRENT_QUESTION_NO_INT_KEY, mCurrentQuestionNo);
outState.putInt(CURRENT_USER_SCORE_INT_KEY, getUserScore());
outState.putInt(CURRENT_QUESTION_INDEX_INT_KEY, mCurrentQuestionIndex);
outState.putInt(FUTURE_QUESTION_INDEX_INT_KEY, mFutureQuestionIndex);
outState.putBoolean(HINT_BUTTON_STATE_BOOL_KEY, mHintButtonState);
outState.putBoolean(HINT_BUTTON_PRESSED_BOOL_KEY, mHintButtonPressed);
outState.putBoolean(TEXTUAL_QUESTION_BOOL_KEY, mIsTextualQuestion);
outState.putString(TEXTUAL_USER_INPUT_STR_KEY,
(mTextOptionView == null) ? "" : mTextOptionView.getText().toString());
outState.putString(ACTIVITY_STATE_STR_KEY, mActivityStateStr);
outState.putString(SUBMIT_BUTTON_STATE_STR_KEY, mSubmitButtonView.getText().toString());
super.onSaveInstanceState(outState);
}
//Called by the Activity when the activity is about to close
@Override
protected void onStop() {
super.onStop();
Log.i(TAG, "onStop");
//Resetting the flag to false
onCreateInvoked = false;
}
/**
* Method to initialize the view components for the first question
*/
private void init() {
Log.i(TAG, "init: Started");
//Retrieving the questions order
String questionOrderStr = randomize(mTotalNumberOfQuestions, mNoOfQuestionsToLoad);
Log.i(TAG, "init: QuestionOrder: " + questionOrderStr);
//Initializing the header text score
mTotalScoreTextView.setText("0/" + mNoOfQuestionsToLoad);
//Initializing the integer array of question order
mQuestionIndexOrderArray = questionOrderStr.split(";");
//Preparing the screen components for the first question
loadNextQuestion();
//Resetting the state of launch to False
mFirstTimeLaunch = false;
}
/**
* Method to randomize the order of questions/options
*
* @param length is the max number of the questions/(or) options in a question
* @param sublength is the number of the questions/(or) options in a question
* @return String containing the index order of questions/options
* where each index is separated by ';' and each index is unique
*/
private String randomize(int length, int sublength) {
//StringBuilder to build the random order of questions/options
StringBuilder randomOrderBuilder = new StringBuilder();
//Initializing Random number generator
Random randomNumber = new Random();
for (int i = 0; i < sublength; i++) {
int number = randomNumber.nextInt(length);
//Verifying whether the number was previously generated
if (Arrays.asList(randomOrderBuilder.toString().split(";")).contains(String.valueOf(number))) {
i--; //decrementing to repeat
continue; //repeating the loop
}
randomOrderBuilder.append(number);
if ((i + 1) < sublength) {
//appending ';' till the last number is generated
randomOrderBuilder.append(";");
}
}
//returning the random numbers generated
return randomOrderBuilder.toString();
}
/**
* Method that reloads the screen components for the current question after configuration change
*
* @param currentUserScore is the current Score of the User
* @param submitButtonStateStr contains the text shown on Submit Button "R.id.submit_button_id"
*/
private void reloadCurrentQuestion(int currentUserScore, String submitButtonStateStr) {
//updating the question number being displayed
mQuestionNumberTextView.setText(mCurrentQuestionNo + "/" + mNoOfQuestionsToLoad);
//updating the score
mTotalScoreTextView.setText(currentUserScore + "/" + mNoOfQuestionsToLoad);
//reinitializing the Question
initializeQuestion();
//reinitializing the Current Question image if already downloaded
if (mHintArray[0].startsWith("res")) {
//When the path starts as "res", then the image is located under res directory
int startIndex = mHintArray[0].lastIndexOf("/");
int endIndex = mHintArray[0].lastIndexOf(".");
int imageResourceId = getResources().getIdentifier(mHintArray[0].substring(startIndex + 1, endIndex), "drawable", getPackageName());
mDownloadedBitmap = BitmapFactory.decodeResource(getResources(), imageResourceId);
} else if (mCurrentBitmapTaskFragment.getDownloadTaskState(mCurrentQuestionIndex)
.equals(ImageDownloaderTaskFragment.TaskState.TASK_STATE_COMPLETED.toString())) {
//When the path starts as "http", then the image will be downloaded by the fragment
mDownloadedBitmap = mCurrentBitmapTaskFragment.getDownloadedBitmap(mCurrentQuestionIndex);
}
//reinitializing the Future Question image if already downloaded
if (mFutureBitmapTaskFragment.getDownloadTaskState(mFutureQuestionIndex)
.equals(ImageDownloaderTaskFragment.TaskState.TASK_STATE_COMPLETED.toString())) {
mPrefetchedBitmap = mFutureBitmapTaskFragment.getDownloadedBitmap(mFutureQuestionIndex);
}
//reinitializing the Options: START
if (mIsTextualQuestion) {
//Adding the EditText view, when it is Textual Based Question
if (mTextualUserInputStr != null && mTextualUserInputStr.length() > 0) {
//When the User had already entered the text
addNewEditTextOption(mOptionArray[0], mTextualUserInputStr);
} else {
//When the User had not entered any text
addNewEditTextOption(mOptionArray[0], null);
}
} else {
//When it is not a Textual Based Question
//Retrieving the count of Answer Keys
int noOfKeys = mCorrectAnswerList.size();
//Retrieving options
String[] optionIndexOrderArray = mOptionIndexOrderStr.split(";");
//Retrieving the current screen orientation
int screenOrientation = getResources().getConfiguration().orientation;
Log.i(TAG, "reloadCurrentQuestion: screenOrientation: " + screenOrientation);
if (noOfKeys > 1) {
//When the Number of Answers is more than 1, then the question is CheckBox Option based
addNewCheckBoxOptions(optionIndexOrderArray, screenOrientation);
} else if (noOfKeys == 1) {
//When the Number of Answers is equal to 1, then the question is RadioButton Option based
addNewRadioButtonOptions(optionIndexOrderArray, screenOrientation);
}
//Highlighting the Selected Answers if any: START
if (mSelectedAnswerList.size() > 0) {
//Retrieving the Selected options
String[] selectedOptionOrderArray = mSelectedIndexOrderStr.split(";");
//Declaring the CompoundButton
CompoundButton buttonView = null;
//Clearing the value as it will be regenerated through listeners
mSelectedIndexOrderStr = "";
//Iterating and marking the selected options as checked
for (String selectedOptionOrderStr : selectedOptionOrderArray) {
int optionIndex = Integer.parseInt(selectedOptionOrderStr);
switch (optionIndex) {
case 1:
buttonView = findViewById(R.id.first_option);
break;
case 2:
buttonView = findViewById(R.id.second_option);
break;
case 3:
buttonView = findViewById(R.id.third_option);
break;
case 4:
buttonView = findViewById(R.id.fourth_option);
break;
}
buttonView.setChecked(true);
}
}
//Highlighting the Selected Answers if any: END
}
//reinitializing the Options: END
//Enabling the Hint button components if Hint button was enabled
if (mHintButtonState) {
enableHintButtonComponents();
} else {
disableHintButtonComponents();
}
//Reveal the Hint if Hint button was pressed
if (mHintButtonPressed) {
//Setting the Hint text in the view "R.id.hint_text_box_id"
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
mHintTextView.setText(Html.fromHtml(mHintArray[1], Html.FROM_HTML_MODE_LEGACY));
} else {
mHintTextView.setText(Html.fromHtml(mHintArray[1]));
}
//Revealing the Hint image if downloaded successfully
if (mDownloadedBitmap != null) {
//When the image was downloaded successfully
mHintImageView.setImageBitmap(mDownloadedBitmap);
}
}
//Updating the Submit Button Text
mSubmitButtonView.setText(submitButtonStateStr);
//Revealing the answers when the Submit button is not in Submit state
if (!submitButtonStateStr.equalsIgnoreCase(getString(R.string.submit_button_text))) {
revealAnswers();
//When in Next/Finish state, show the Image as the question is already answered
if (mDownloadedBitmap != null) {
//When the image was downloaded successfully
mHintImageView.setImageBitmap(mDownloadedBitmap);
}
//Disabling the Options when in Next/Finish state
disableOptions();
}
}
/**
* Method that prepares the screen components for the next question
*/
private void loadNextQuestion() {
//initializing the current question index
mCurrentQuestionIndex = Integer.parseInt(mQuestionIndexOrderArray[mCurrentQuestionNo]);
//Displaying Progress Dialog for first question
if (mCurrentQuestionNo == 0) {
showProgressDialog(R.string.progress_dialog_initial_loading_text);
}
//incrementing question number
mCurrentQuestionNo++;
//updating the question number being displayed
mQuestionNumberTextView.setText(mCurrentQuestionNo + "/" + mNoOfQuestionsToLoad);
//initializing the Question
initializeQuestion();
//initializing the Hints
initializeHints();
//initializing the Keys
initializeKeys();
//Clearing the RadioButton Monitor ArrayList
mVirtualRadioGrpList.clear();
//initializing the Options
initializeOptions();
//initializing the Selected Answers
if (mSelectedAnswerList == null) {
mSelectedAnswerList = new ArrayList<>();
} else if (mSelectedAnswerList.size() > 0) {
mSelectedAnswerList.clear();
}
mSelectedIndexOrderStr = "";
//disabling the components related to hint button
disableHintButtonComponents();
//resetting the state of hint button pressed to False
mHintButtonPressed = false;
//reloading the default hint image
mHintImageView.setImageResource(R.drawable.hidden_image);
if (mCurrentQuestionNo < mNoOfQuestionsToLoad) {
//Prefetching hint image of Next question
prefetchNextHintImage();
} else {
//Setting to 0 when there is no Next question
mFutureQuestionIndex = 0;
}
}
/**
* Method that initializes the question component "question_text_id"
*/
private void initializeQuestion() {
//Retrieving and updating the question
String currentQuestionStr = mQuestionArray[mCurrentQuestionIndex];
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
mQuestionTextView.setText(Html.fromHtml(currentQuestionStr, Html.FROM_HTML_MODE_LEGACY));
} else {
mQuestionTextView.setText(Html.fromHtml(currentQuestionStr));
}
Log.i(TAG, "initializeQuestion: mQuestionTextView: " + mQuestionTextView.getText());
}
/**
* Method that initializes the Key Answers for the current Question
*/
private void initializeKeys() {
//Retrieving the Answer Keys Array
String[] keysArray = getStringArrayResourceByName("key", mCurrentQuestionIndex);
//Initializing the ArrayList
if (mCorrectAnswerList == null) {
mCorrectAnswerList = new ArrayList<>();
} else if (mCorrectAnswerList.size() > 0) {
mCorrectAnswerList.clear();
}
//loading the Answer Keys to the list
mCorrectAnswerList.addAll(Arrays.asList(keysArray));
}
/**
* Method that initializes the Options available for the current Question.
* This dynamically generates components (Checkboxes, RadioButtons, EditText)
* in the LinearLayout "option_container_area_id" based on the number of Options
* and Keys available for the Question.
*/
private void initializeOptions() {
//Retrieving the Options Array
mOptionArray = getStringArrayResourceByName("option", mCurrentQuestionIndex);
int noOfOptions = mOptionArray.length; //Number of Options
int noOfKeys = mCorrectAnswerList.size(); //Number of Answer Keys
//Retrieving the properties of the Options Layout Container "R.id.option_container_area_id"
Bundle bundleOptionsData = getOptionContainerProperties();
//Retrieving the count of child views present
int existingChildCount = bundleOptionsData.getInt(EXISTING_CHILD_COUNT_INT_KEY);
//Retrieving the child component is CheckBox/RadioButton/EditText
String existingTypeStr = bundleOptionsData.getString(EXISTING_CHILD_TYPE_STR_KEY);
if (noOfOptions > 1) {
//When the Number of Options are more than 1 (else it is a text based question)
//Setting the textual question boolean to False, and its component to null
if (mIsTextualQuestion) {
mIsTextualQuestion = false;
mTextOptionView = null;
}
//Retrieving options in random order
mOptionIndexOrderStr = randomize(noOfOptions, noOfOptions);
String[] optionIndexOrderArray = mOptionIndexOrderStr.split(";");
//Retrieving the current screen orientation
int screenOrientation = getResources().getConfiguration().orientation;
if (noOfKeys > 1) {
//When Answer Keys are more than 1 then it is Checkbox based
if (existingTypeStr.equals(CheckBox.class.getSimpleName())) {
//When the child views are CheckBox views, the views will be reused
//Modifying existing CheckBox views and adding new ones when required
reuseAddCheckBoxOptions(optionIndexOrderArray, screenOrientation, existingChildCount);
} else {
//When the child views are Not CheckBox views /(or) no view present,
//then the views will be created
addNewCheckBoxOptions(optionIndexOrderArray, screenOrientation);
}
} else if (noOfKeys == 1) {
//When Answer Keys are equal to 1 then it is RadioButton based
if (existingTypeStr.equals(RadioButton.class.getSimpleName())) {
//When the child views are RadioButton views, the views will be reused
//Modifying existing RadioButton views and adding new ones when required
reuseAddRadioButtonOptions(optionIndexOrderArray, screenOrientation, existingChildCount);
} else {
//When the child views are Not RadioButton views /(or) no view present,
//then the views will be created
addNewRadioButtonOptions(optionIndexOrderArray, screenOrientation);
}
}
} else {
//When the Number of Options are equal to 1, it is a text based question
//Setting the textual question boolean to True
mIsTextualQuestion = true;
//Clearing the Previous User Input value (if any)
mTextualUserInputStr = "";
//Retrieving the hint text from the option
String hintTextStr = mOptionArray[0];
if (existingChildCount == 1
&& existingTypeStr.equals(EditText.class.getSimpleName())) {
//When the child count is 1 and is EditText
View childView = mOptionContainerView.getChildAt(0);
mTextOptionView = (EditText) childView;
//Clearing the Text
mTextOptionView.setText("");
//Setting the hint text
mTextOptionView.setHint(hintTextStr);
//Ensuring the EditText is enabled
mTextOptionView.setEnabled(true);
} else {
//When the Child View is not an EditText view,
//Then the view will be created
//Creating and adding the EditText Option field
addNewEditTextOption(hintTextStr, null);
}
}
}
/**
* Method that creates a EditText option, adds properties and attaches the layout "R.id.option_container_area_id"
*
* @param hintTextStr is the Hint Text to be shown on the EditText
* @param textContentStr is the Text Content to be shown on the EditText, if any. Can be Null
*/
private void addNewEditTextOption(String hintTextStr, @Nullable String textContentStr) {
//Removing all the child views present
mOptionContainerView.removeAllViews();
//Initializing EditText View
mTextOptionView = new EditText(this);
//Setting the Id
mTextOptionView.setId(R.id.text_option);
//Setting the hint text
mTextOptionView.setHint(hintTextStr);
//Setting the hint text tint
mTextOptionView.setHintTextColor(ContextCompat.getColor(this, R.color.textOptionHintTextLightGreen500));
//Setting the InputType
mTextOptionView.setInputType(InputType.TYPE_TEXT_VARIATION_PERSON_NAME | InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS | InputType.TYPE_TEXT_FLAG_CAP_WORDS | InputType.TYPE_TEXT_FLAG_MULTI_LINE);
//Setting the background
mTextOptionView.setBackground(ContextCompat.getDrawable(this, R.drawable.textual_input_box_shape));
//Setting the TextColor
mTextOptionView.setTextColor(Color.BLACK);
//Setting the TextSize
mTextOptionView.setTextSize(TypedValue.COMPLEX_UNIT_PX, getResources().getDimensionPixelSize(R.dimen.question_option_text_size));
//Setting the Content Text if passed
if (textContentStr != null) {
mTextOptionView.setText(textContentStr);
}
//Setting the LayoutParams for the EditText
RelativeLayout.LayoutParams editTextLayoutParams = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
editTextLayoutParams.topMargin = getResources().getDimensionPixelSize(R.dimen.text_option_top_margin);
editTextLayoutParams.bottomMargin = getResources().getDimensionPixelSize(R.dimen.text_option_bottom_margin);
editTextLayoutParams.leftMargin = getResources().getDimensionPixelSize(R.dimen.text_option_left_margin);
editTextLayoutParams.rightMargin = getResources().getDimensionPixelSize(R.dimen.text_option_right_margin);
//Setting the Gravity
mTextOptionView.setGravity(Gravity.CENTER);
//adding to the layout
mOptionContainerView.addView(mTextOptionView, editTextLayoutParams);
}
/**
* Method that re-uses the existing RadioButton Option Views and adds extra RadioButtons if required,
* to the layout "R.id.option_container_area_id" based on the current screen orientation
*
* @param optionIndexOrderArray is the randomized order of option index generated
* @param screenOrientation is the Integer value of the current screen orientation
* @param existingChildCount is the Existing Count of Child Option Views before modifying the layout
*/
private void reuseAddRadioButtonOptions(String[] optionIndexOrderArray, int screenOrientation, int existingChildCount) {
int noOfOptions = optionIndexOrderArray.length;
//Modifying existing RadioButtons and adding new ones when required: START
if (screenOrientation == Configuration.ORIENTATION_PORTRAIT) {
//When the device was in portrait mode
RadioGroup radioGroupView = (RadioGroup) mOptionContainerView.getChildAt(0);
for (int i = 0; i < noOfOptions; i++) {
//Declaring a RadioButton view
RadioButton radioButton = null;
//Retrieving the current index option value
int optionIndex = Integer.parseInt(optionIndexOrderArray[i]);
String optionTextStr = mOptionArray[optionIndex];
if (i < existingChildCount) {
//Modifying any existing ones
//Retrieving the existing RadioButton view
switch (i) {
case 0:
radioButton = radioGroupView.findViewById(R.id.first_option);
break;
case 1:
radioButton = radioGroupView.findViewById(R.id.second_option);
break;
case 2:
radioButton = radioGroupView.findViewById(R.id.third_option);
break;
case 3:
radioButton = radioGroupView.findViewById(R.id.fourth_option);
break;
}
//Clearing previous selection if any
if (radioButton.isChecked()) {
radioButton.setChecked(false);
}
//Ensuring the RadioButton is enabled
radioButton.setEnabled(true);
//Setting Option Text and other Button properties
setOptionButtonProperties(radioButton, optionTextStr);
} else {
//Adding new RadioButton views when required
//Creating the RadioButton Option
radioButton = createRadioButtonOption(optionTextStr);
//Setting RadioButton LayoutParams
RadioGroup.LayoutParams radBtnLayoutParams = new RadioGroup.LayoutParams(RadioGroup.LayoutParams.MATCH_PARENT, RadioGroup.LayoutParams.MATCH_PARENT);
//Setting the RadioButton id and Margins: START
switch (i) {
case 0:
radioButton.setId(R.id.first_option);
break;
case 1:
radioButton.setId(R.id.second_option);
radBtnLayoutParams.topMargin = getResources().getDimensionPixelSize(R.dimen.rad_btn_top_margin);
break;
case 2:
radioButton.setId(R.id.third_option);
radBtnLayoutParams.topMargin = getResources().getDimensionPixelSize(R.dimen.rad_btn_top_margin);
break;
case 3:
radioButton.setId(R.id.fourth_option);