Course handler function completed with Video Controller

app/build.gradle

@@ -78,6 +78,7 @@ dependencies {
     implementation files('libs\\activation.jar')
     implementation files('libs\\mail.jar')
     implementation files('libs\\additional.jar')
+    implementation files('libs\\YouTubeAndroidPlayerApi.jar')
     testImplementation 'junit:junit:4.+'
     androidTestImplementation 'androidx.test.ext:junit:1.1.1'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'

app/src/main/AndroidManifest.xml

 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="com.elearning.probabilityandstatisticsanalyserandeducator" >
+    package="com.elearning.probabilityandstatisticsanalyserandeducator">
 
     <uses-feature
         android:name="android.hardware.camera2"
@@ -22,17 +22,14 @@
         android:requestLegacyExternalStorage="true"
         android:roundIcon="@mipmap/app_logo"
         android:supportsRtl="true"
-        android:theme="@style/Theme.ProbabilityAndStatisticsAnalyserAndEducator" >
-
+        android:theme="@style/Theme.ProbabilityAndStatisticsAnalyserAndEducator">
+        <activity android:name=".adaptiveLearning.VideoController"></activity>
+        <activity android:name=".adaptiveLearning.CourseHandler" />
         <activity android:name=".inputMethod.StandardDeviationInputMethod" />
-
-        <activity android:name=".calculationfunction.StandaradDeviationCalculation"/>
+        <activity android:name=".calculationfunction.StandaradDeviationCalculation" />
         <activity android:name=".calculationfunction.EssayTypeStdQuestionActivity" />
         <activity android:name=".calculationfunction.ProbabilityDistributionCalculation" />
         <activity android:name=".calculationfunction.EssayTypeProDistributionActivity" />
-
-
-
         <activity android:name=".inputMethod.ProbabilityDistributionsIM" />
         <activity android:name=".adaptiveLearning.QuizActivity" />
         <activity android:name=".adaptiveLearning.StartingScreen" />
@@ -43,7 +40,6 @@
         <activity android:name=".calculationfunction.DescriptiveStatisticsCalcuation" />
         <activity android:name=".calculationfunction.EssayTypeDescriptiveStaticQuestion" />
         <activity android:name=".inputMethod.ProbabilityCalculationIM" />
-
         <activity
             android:name="com.theartofdev.edmodo.cropper.CropImageActivity"
             android:theme="@style/Theme.AppCompat.DayNight.DarkActionBar" />
@@ -52,11 +48,9 @@
         <activity android:name=".Welcome" />
         <activity android:name=".SignUp" />
         <activity android:name=".verification_screen" />
-
-
         <activity
             android:name=".MainActivity"
-            android:theme="@style/AppTheme.NoActionBar" >
+            android:theme="@style/AppTheme.NoActionBar">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 
@@ -68,12 +62,11 @@
             android:name="androidx.core.content.FileProvider"
             android:authorities="${applicationId}.provider"
             android:exported="false"
-            android:grantUriPermissions="true" >
+            android:grantUriPermissions="true">
             <meta-data
                 android:name="android.support.FILE_PROVIDER_PATHS"
                 android:resource="@xml/provider_paths" />
         </provider>
     </application>
 
-
 </manifest>
\ No newline at end of file

app/src/main/java/com/elearning/probabilityandstatisticsanalyserandeducator/UserDashBoard.java

@@ -2,11 +2,13 @@ package com.elearning.probabilityandstatisticsanalyserandeducator;
 
 import androidx.annotation.NonNull;
 import androidx.appcompat.app.ActionBarDrawerToggle;
+import androidx.appcompat.app.AlertDialog;
 import androidx.appcompat.app.AppCompatActivity;
 import androidx.appcompat.widget.Toolbar;
 import androidx.core.view.GravityCompat;
 import androidx.drawerlayout.widget.DrawerLayout;
 
+import android.content.DialogInterface;
 import android.content.Intent;
 import android.os.Bundle;
 import android.view.MenuItem;
@@ -53,6 +55,8 @@ public class UserDashBoard extends AppCompatActivity implements NavigationView.O
 
         if (isInitialExamFinished == 0){
             Intent intent = new Intent(UserDashBoard.this,StartingScreen.class);
+           // intent.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
+            intent.putExtra("isInitialExamFinished",isInitialExamFinished);
             startActivity(intent);
         }
 
@@ -98,6 +102,27 @@ public class UserDashBoard extends AppCompatActivity implements NavigationView.O
         if (drawer.isDrawerOpen(GravityCompat.START)){
             drawer.closeDrawer(GravityCompat.START);
         }
-        super.onBackPressed();
+       // super.onBackPressed();
+        AlertDialog.Builder builder = new AlertDialog.Builder(UserDashBoard.this);
+        builder.setTitle(R.string.app_name);
+        //builder.setIcon(R.mipmap.ic_launcher);
+        builder.setMessage("Do you want to exit?")
+                .setCancelable(false)
+                .setPositiveButton("Yes", new DialogInterface.OnClickListener() {
+                    public void onClick(DialogInterface dialog, int id) {
+
+                        Intent intent = new Intent(UserDashBoard.this, Welcome.class);
+                        intent.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
+                        startActivity(intent);
+                        finish();
+                    }
+                })
+                .setNegativeButton("No", new DialogInterface.OnClickListener() {
+                    public void onClick(DialogInterface dialog, int id) {
+                        dialog.cancel();
+                    }
+                });
+        AlertDialog alert = builder.create();
+        alert.show();
     }
 }
\ No newline at end of file

app/src/main/java/com/elearning/probabilityandstatisticsanalyserandeducator/Welcome.java

@@ -147,6 +147,7 @@ public class Welcome extends AppCompatActivity {
                              con.close();
                              if (is_Active == 1){
                                  Intent intent = new Intent(Welcome.this, UserDashBoard.class);
+                                 intent.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
                                  startActivity(intent);
                                  finish();
                              }else{

app/src/main/java/com/elearning/probabilityandstatisticsanalyserandeducator/adaptiveLearning/AdaptiveQuestionGenarator.java

@@ -57,7 +57,7 @@ public class AdaptiveQuestionGenarator {
             questionList = dbHelper.NormalDistributionGetAllInitialQuestion();
             easyQuestionList = dbHelper.NormalDistributionGenarateEasyQuestions();
             moderateQuestionList = dbHelper.NormalDistributionGenarateModerateQuestions();
-            hardQuestionList = dbHelper.Z_ScoreGenarateHardQuestions();
+            hardQuestionList = dbHelper.NormalDistributionGenarateHardQuestions();
         }
 
 

app/src/main/java/com/elearning/probabilityandstatisticsanalyserandeducator/adaptiveLearning/CourseHandler.java

+package com.elearning.probabilityandstatisticsanalyserandeducator.adaptiveLearning;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.widget.Button;
+
+import com.elearning.probabilityandstatisticsanalyserandeducator.MainActivity;
+import com.elearning.probabilityandstatisticsanalyserandeducator.R;
+import com.elearning.probabilityandstatisticsanalyserandeducator.SessionManager;
+import com.elearning.probabilityandstatisticsanalyserandeducator.UserDashBoard;
+import com.elearning.probabilityandstatisticsanalyserandeducator.adaptiveLearning.courses.DescriptiveCourse;
+import com.elearning.probabilityandstatisticsanalyserandeducator.adaptiveLearning.courses.NormalDistributionCourse;
+import com.elearning.probabilityandstatisticsanalyserandeducator.adaptiveLearning.courses.ProbabilityCourse;
+import com.elearning.probabilityandstatisticsanalyserandeducator.adaptiveLearning.courses.ProbabilityDistrributionCourse;
+import com.elearning.probabilityandstatisticsanalyserandeducator.adaptiveLearning.courses.StandardDeviationCourse;
+import com.elearning.probabilityandstatisticsanalyserandeducator.adaptiveLearning.courses.Z_ScoreCourse;
+
+import java.util.HashMap;
+
+public class CourseHandler extends AppCompatActivity {
+
+    private int userID;
+    static int SELECT_QUESTION_TYPE = 0;
+
+
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_course_handler);
+
+
+        //By using session Manager we tacking user details
+        SessionManager sessionManager = new SessionManager(this);
+
+        //------------------------- Creating Hash Map---------------------------------
+        HashMap<String,String> userDetails = sessionManager.getUserDetailsFromSession();
+
+        //tacking userID from session manager and it come as a string
+        //we convert userID int by using parseInt and asssin it into userID
+        userID = Integer.parseInt(userDetails.get(SessionManager.KEY_UID));
+
+
+        Intent intent = getIntent();
+        SELECT_QUESTION_TYPE = intent.getIntExtra("Selected_Question_type",0);
+        if (SELECT_QUESTION_TYPE == 1){
+            // call the fragment manager
+            getSupportFragmentManager().beginTransaction().add(R.id.course_container,new DescriptiveCourse()).commit();
+
+        }else if (SELECT_QUESTION_TYPE == 2){
+            // call the fragment manager
+            getSupportFragmentManager().beginTransaction().add(R.id.course_container,new StandardDeviationCourse()).commit();
+
+        }else if (SELECT_QUESTION_TYPE == 3){
+            // call the fragment manager
+            getSupportFragmentManager().beginTransaction().add(R.id.course_container,new ProbabilityCourse()).commit();
+
+        }else if (SELECT_QUESTION_TYPE == 4){
+            // call the fragment manager
+            getSupportFragmentManager().beginTransaction().add(R.id.course_container,new ProbabilityDistrributionCourse()).commit();
+
+        }else if (SELECT_QUESTION_TYPE == 5){
+            // call the fragment manager
+            getSupportFragmentManager().beginTransaction().add(R.id.course_container,new Z_ScoreCourse()).commit();
+
+        }else if (SELECT_QUESTION_TYPE == 6){
+            // call the fragment manager
+            getSupportFragmentManager().beginTransaction().add(R.id.course_container,new NormalDistributionCourse()).commit();
+
+        }else {
+            Intent intent1 = new Intent(this, UserDashBoard.class);
+            intent1.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
+            startActivity(intent1);
+            finish();
+        }
+
+
+    }
+
+}
\ No newline at end of file

app/src/main/java/com/elearning/probabilityandstatisticsanalyserandeducator/adaptiveLearning/DashBoardHome.java

@@ -17,16 +17,24 @@ import android.widget.Button;
 import android.widget.LinearLayout;
 
 import com.elearning.probabilityandstatisticsanalyserandeducator.R;
+import com.elearning.probabilityandstatisticsanalyserandeducator.SessionManager;
 import com.elearning.probabilityandstatisticsanalyserandeducator.UserDashBoard;
 
+import java.util.HashMap;
+
 import static androidx.appcompat.content.res.AppCompatResources.getDrawable;
 
+
 public class DashBoardHome extends Fragment {
 
     LinearLayout descriptive_ststis, standard_dev, probability, probability_deistribu, z_score, normal_distribu;
     Button dashbord_continur, dashboard_cancel;
     Animation fade;
+
+    static int userID;
     static int  SELECTED_QUESTION_TYPE = 0;
+    static int PROGRESS_LEVEL = 0;
+    DbHelper dbHelper;
 
 
 
@@ -54,6 +62,21 @@ public class DashBoardHome extends Fragment {
         dashbord_continur.setAlpha(0);
         dashboard_cancel.setAlpha(0);
 
+
+        dbHelper = new DbHelper();
+
+        //By using session Manager we tacking user details
+        SessionManager sessionManager = new SessionManager(getContext());
+
+        //------------------------- Creating Hash Map---------------------------------
+        HashMap<String,String> userDetails = sessionManager.getUserDetailsFromSession();
+
+        //tacking userID from session manager and it come as a string
+        //we convert userID int by using parseInt and asssin it into userID
+        userID = Integer.parseInt(userDetails.get(SessionManager.KEY_UID));
+
+
+
         descriptive_ststis.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View view) {
@@ -145,11 +168,24 @@ public class DashBoardHome extends Fragment {
             @Override
             public void onClick(View view) {
 
-                Intent intent = new Intent(getContext(),StartingScreen.class);
-                intent.putExtra("Selected_Question_type",SELECTED_QUESTION_TYPE);
+                PROGRESS_LEVEL = dbHelper.UserProgressChecker(userID,SELECTED_QUESTION_TYPE);
+                if (PROGRESS_LEVEL == 0){
+                    Intent intent = new Intent(getContext(),StartingScreen.class);
+                    intent.putExtra("Selected_Question_type",SELECTED_QUESTION_TYPE);
+
+                    startActivity(intent);
 
-                startActivity(intent);
+                }else if (PROGRESS_LEVEL == 1){
+                    Intent intent = new Intent(getContext(),CourseHandler.class);
+                    intent.putExtra("Selected_Question_type",SELECTED_QUESTION_TYPE);
 
+                    startActivity(intent);
+                }else{
+                    Intent intent = new Intent(getContext(),UserDashBoard.class);
+                    intent.putExtra("Selected_Question_type",SELECTED_QUESTION_TYPE);
+                    intent.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
+                    startActivity(intent);
+                }
             }
         });
 

app/src/main/java/com/elearning/probabilityandstatisticsanalyserandeducator/adaptiveLearning/DbHelper.java

@@ -3,8 +3,10 @@ package com.elearning.probabilityandstatisticsanalyserandeducator.adaptiveLearni
 import com.elearning.probabilityandstatisticsanalyserandeducator.DBConnection;
 
 import java.sql.Connection;
+import java.sql.Date;
 import java.sql.ResultSet;
 import java.sql.Statement;
+import java.sql.Time;
 
 public class DbHelper {
 
@@ -12,6 +14,7 @@ public class DbHelper {
     Connection con;
 
     public int isInitialExamFinished = 0;
+    public int progressLevel = 0;
 
     public int isInitialExamFinished(int userID){
 
@@ -41,4 +44,57 @@ public class DbHelper {
     }
 
 
+    public int saveUserProgress( int userID, int courseID, int progressLevel){
+
+        int checkQuery= 0;
+
+        //calling get connection into our con variable and passing values to DB
+        try {
+            con = dbConnection.getConnection();
+            if (con==null){
+                System.out.println("Connection Error");
+            }else {
+
+                String query = "INSERT INTO User_progress_log(userID, courseID, progressLevel)"
+                        +"VALUES('"+userID+"','"+courseID+"','"+progressLevel+"')";
+
+                checkQuery = dbConnection.Save(query);
+
+            }
+
+        }catch (Exception e){
+            e.printStackTrace();
+        }
+
+        return checkQuery;
+
+    }
+
+
+    public int UserProgressChecker(int userID, int courseID){
+
+        try {
+            //Getting DB connection in to con variable
+            con = dbConnection.getConnection();
+            //if DB connection false show error message
+            if (con == null){
+                System.out.println("Connection Error");
+            }else {
+                //When DB connection works
+                //Execute SELECT query from DB
+                String query = "Select progressLevel from User_Progress_Log where userID = '"+userID+"' and courseID = '"+courseID+"'";
+                Statement st = con.createStatement();
+                ResultSet rst = st.executeQuery(query);
+
+                while(rst.next()){
+                    progressLevel = rst.getInt("progressLevel");
+
+                }
+            }
+
+        }catch (Exception e){
+            e.printStackTrace();
+        }
+        return progressLevel;
+    }
 }

app/src/main/java/com/elearning/probabilityandstatisticsanalyserandeducator/adaptiveLearning/QuizActivity.java

@@ -90,6 +90,7 @@ public class QuizActivity extends AppCompatActivity {
     private long aveAnsewerdTime = 0;
     private long totalExamTime = 0;
 
+    private DbHelper dbHelper;
 
 
     @Override
@@ -125,6 +126,10 @@ public class QuizActivity extends AppCompatActivity {
         textColourDefaultRb = rb_QuizQ1.getTextColors();
         textcolorDefaultCD = textViewCountDown.getTextColors();
 
+        //DBHelper object
+        dbHelper = new DbHelper();
+
+
         //creating adaptive question genarator
         adaptiveQuestionGenarator = new AdaptiveQuestionGenarator();
 
@@ -247,6 +252,7 @@ public class QuizActivity extends AppCompatActivity {
 
 
             questionCounter++;
+            // show next question to user
             textViewQuestionCount.setText("Question: "+ questionCounter+ "/" + questionCountTotal);
             answered = false;
             btn_confirm_next.setText("Confirm");
@@ -398,7 +404,9 @@ public class QuizActivity extends AppCompatActivity {
            checkValue =  quizDbHelper.createUser_ExamLog(KEY_EXAM_NAME,userID,examStartedTime,examFinishedTime,dateOfExam,score,numCorrectAns,numWrongAns,aveAnsTime,KEY_EXAM_CATEGORY);
 
            quizDbHelper.UpdateIsInitialExam(userID);
-
+           if(SELECT_QUESTION_TYPE != 0){
+               dbHelper.saveUserProgress(userID, SELECT_QUESTION_TYPE,1);
+           }
         }
 
 

app/src/main/java/com/elearning/probabilityandstatisticsanalyserandeducator/adaptiveLearning/QuizDbHelper.java

@@ -820,7 +820,7 @@ public class QuizDbHelper {
             if (con == null){
                 System.out.println("Connection Error");
             }else {
-                String query = "select * from ques_probability_distribution where dis_difficulty_index BETWEEN 0.3 AND 0.7;";
+                String query = "select * from ques_probability_distribution where dis_difficulty_index BETWEEN 0.3 AND 0.7";
                 Statement st = con.createStatement();
                 ResultSet rst = st.executeQuery(query);
 
@@ -1188,7 +1188,7 @@ public class QuizDbHelper {
             if (con == null){
                 System.out.println("Connection Error");
             }else {
-                String query = "select * from ques_initial_Exam where ini_difficulty_index < 0.3";
+                String query = "select * from ques_normal_distribution where nor_difficulty_index < 0.3";
                 Statement st = con.createStatement();
                 ResultSet rst = st.executeQuery(query);
 
@@ -1215,7 +1215,7 @@ public class QuizDbHelper {
             e.printStackTrace();
         }
 
-        //  System.out.println("dbhelper "+questionList);
+          System.out.println("NormalDistributionHarddbhelper "+questionList);
         return questionList;
     }
 }

app/src/main/java/com/elearning/probabilityandstatisticsanalyserandeducator/adaptiveLearning/StartingScreen.java

@@ -5,11 +5,19 @@ import androidx.appcompat.app.AppCompatActivity;
 import android.content.Intent;
 import android.content.SharedPreferences;
 import android.os.Bundle;
+import android.os.Handler;
 import android.view.View;
 import android.widget.Button;
 import android.widget.TextView;
 
+import com.elearning.probabilityandstatisticsanalyserandeducator.MainActivity;
 import com.elearning.probabilityandstatisticsanalyserandeducator.R;
+import com.elearning.probabilityandstatisticsanalyserandeducator.SessionManager;
+import com.elearning.probabilityandstatisticsanalyserandeducator.SignUp;
+import com.elearning.probabilityandstatisticsanalyserandeducator.UserDashBoard;
+import com.elearning.probabilityandstatisticsanalyserandeducator.Welcome;
+
+import java.util.HashMap;
 
 public class StartingScreen extends AppCompatActivity {
     private static final int REQUEST_CODE_QUIZ = 1;
@@ -19,18 +27,40 @@ public class StartingScreen extends AppCompatActivity {
 
     private TextView textViewHighscore;
 
+    Button button_back_quiz;
+    private int userID;
     private int highscore;
     static int SELECT_QUESTION_TYPE = 0;
+    static int isInitialExamFinished = 0;
+
+    DbHelper dbHelper;
+
+
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_starting_screen);
 
+        //By using session Manager we tacking user details
+        SessionManager sessionManager = new SessionManager(this);
+
+        //------------------------- Creating Hash Map---------------------------------
+        HashMap<String,String> userDetails = sessionManager.getUserDetailsFromSession();
+
+        //tacking userID from session manager and it come as a string
+        //we convert userID int by using parseInt and asssin it into userID
+        userID = Integer.parseInt(userDetails.get(SessionManager.KEY_UID));
+
 
         Intent intent = getIntent();
-         SELECT_QUESTION_TYPE = intent.getIntExtra("Selected_Question_type",0);
+        SELECT_QUESTION_TYPE = intent.getIntExtra("Selected_Question_type",0);
         System.out.println("Selected_Question_type "+SELECT_QUESTION_TYPE);
+
+         dbHelper = new DbHelper();
+
+        isInitialExamFinished = dbHelper.isInitialExamFinished(userID);
+
         //assign text view
         //we load the highscor from shared Prefrenc and set it value to textView
         textViewHighscore = findViewById(R.id.text_view_highscore);
@@ -43,11 +73,39 @@ public class StartingScreen extends AppCompatActivity {
                 Start();
             }
         });
+
+        button_back_quiz = findViewById(R.id.button_back_quiz);
+        button_back_quiz.setVisibility(View.INVISIBLE);
+
+
+
+        button_back_quiz.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+
+              if (SELECT_QUESTION_TYPE != 0) {
+                    Intent intent = new Intent(StartingScreen.this, CourseHandler.class);
+                    intent.putExtra("Selected_Question_type", SELECT_QUESTION_TYPE);
+                    intent.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
+                    startActivity(intent);
+                    //  finish();
+                } else {
+                    Intent intent = new Intent(StartingScreen.this, UserDashBoard.class);
+                    intent.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
+                    startActivity(intent);
+                    finish();
+               }
+            }
+        });
+
+
     }
             private void Start() {
                 Intent intent = new Intent(StartingScreen.this, QuizActivity.class);
                 intent.putExtra("Selected_Question_type",SELECT_QUESTION_TYPE);
+                intent.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
                 startActivityForResult(intent, REQUEST_CODE_QUIZ);
+
             }
 
 
@@ -59,9 +117,16 @@ public class StartingScreen extends AppCompatActivity {
                         int score = data.getIntExtra(QuizActivity.EXTRA_SCORE, 0);
                         if (score > highscore){
                             updateHighscore(score);
+                            //finish();
+                        }
+                        isInitialExamFinished = dbHelper.isInitialExamFinished(userID);
+                        if (isInitialExamFinished == 1){
+                            button_back_quiz.setVisibility(View.VISIBLE);
                         }
+
                     }
 
+
                 }
             }
 
@@ -83,6 +148,39 @@ public class StartingScreen extends AppCompatActivity {
             }
 
 
+    @Override
+    public void onBackPressed() {
+        super.onBackPressed();
+
+        isInitialExamFinished = dbHelper.isInitialExamFinished(userID);
+        if (isInitialExamFinished == 0){
+            Intent intent = new Intent(this, MainActivity.class);
+            intent.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
+            startActivity(intent);
+            finish();
+        }else {
+            Intent intent = new Intent(this, UserDashBoard.class);
+            intent.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
+            startActivity(intent);
+            finish();
+        }
+
+
+    }
 
-   
+    public void LoadNextScreen(){
+        new Handler().postDelayed(new Runnable() {
+            @Override
+            public void run() {
+
+                if (SELECT_QUESTION_TYPE != 0){
+                    Intent intent = new Intent(StartingScreen.this, CourseHandler.class);
+                    intent.putExtra("Selected_Question_type",SELECT_QUESTION_TYPE);
+                    intent.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
+                    startActivity(intent);
+                    //  finish();
+                }
+            }
+        },5000);
+    }
 }
\ No newline at end of file

app/src/main/java/com/elearning/probabilityandstatisticsanalyserandeducator/adaptiveLearning/VideoController.java

+package com.elearning.probabilityandstatisticsanalyserandeducator.adaptiveLearning;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+
+import com.elearning.probabilityandstatisticsanalyserandeducator.R;
+import com.google.android.youtube.player.YouTubeBaseActivity;
+import com.google.android.youtube.player.YouTubeInitializationResult;
+import com.google.android.youtube.player.YouTubePlayer;
+import com.google.android.youtube.player.YouTubePlayerView;
+
+import javax.mail.Message;
+
+public class VideoController extends YouTubeBaseActivity {
+    Button btn_play;
+    YouTubePlayerView youTubePlayerView;
+    YouTubePlayer.OnInitializedListener onInitializedListener;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_video_player);
+
+        btn_play = findViewById(R.id.btn_play);
+        youTubePlayerView = findViewById(R.id.YoutubePlayerView);
+
+        onInitializedListener = new YouTubePlayer.OnInitializedListener() {
+            @Override
+            public void onInitializationSuccess(YouTubePlayer.Provider provider, YouTubePlayer youTubePlayer, boolean b) {
+                youTubePlayer.loadVideo("A1mQ9kD-i9I");
+            }
+
+            @Override
+            public void onInitializationFailure(YouTubePlayer.Provider provider, YouTubeInitializationResult youTubeInitializationResult) {
+
+            }
+        };
+
+        btn_play.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                youTubePlayerView.initialize("AIzaSyD5G-0hTA2rb3hMSQX7oiiUK6gI3VSkKd8",onInitializedListener);
+            }
+        });
+
+    }
+}
\ No newline at end of file

app/src/main/java/com/elearning/probabilityandstatisticsanalyserandeducator/adaptiveLearning/courses/DescriptiveCourse.java

+package com.elearning.probabilityandstatisticsanalyserandeducator.adaptiveLearning.courses;
+
+import android.content.Intent;
+import android.os.Bundle;
+
+import androidx.fragment.app.Fragment;
+
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.Button;
+
+import com.elearning.probabilityandstatisticsanalyserandeducator.R;
+import com.elearning.probabilityandstatisticsanalyserandeducator.adaptiveLearning.CourseHandler;
+import com.elearning.probabilityandstatisticsanalyserandeducator.adaptiveLearning.StartingScreen;
+import com.elearning.probabilityandstatisticsanalyserandeducator.adaptiveLearning.VideoController;
+
+public class DescriptiveCourse extends Fragment {
+
+    Button btn_1, btn_2, btn_3;
+
+
+    public DescriptiveCourse() {
+        // Required empty public constructor
+    }
+
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        View view = inflater.inflate(R.layout.fragment_descriptive_course, container, false);
+
+        btn_1 = view.findViewById(R.id.DecriptiveCourse_btn_1);
+        btn_2 = view.findViewById(R.id.DecriptiveCourse_btn_2);
+        btn_3 = view.findViewById(R.id.DecriptiveCourse_btn_3);
+
+        btn_1.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                Intent intent = new Intent(getContext(), VideoController.class);
+            //    intent.putExtra("Selected_Question_type", SELECT_QUESTION_TYPE);
+                intent.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
+                startActivity(intent);
+            }
+        });
+
+        return view;
+    }
+}
\ No newline at end of file

app/src/main/java/com/elearning/probabilityandstatisticsanalyserandeducator/adaptiveLearning/courses/NormalDistributionCourse.java

+package com.elearning.probabilityandstatisticsanalyserandeducator.adaptiveLearning.courses;
+
+import android.os.Bundle;
+
+import androidx.fragment.app.Fragment;
+
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import com.elearning.probabilityandstatisticsanalyserandeducator.R;
+
+/**
+ * A simple {@link Fragment} subclass.
+ * Use the {@link NormalDistributionCourse#newInstance} factory method to
+ * create an instance of this fragment.
+ */
+public class NormalDistributionCourse extends Fragment {
+
+    // TODO: Rename parameter arguments, choose names that match
+    // the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
+    private static final String ARG_PARAM1 = "param1";
+    private static final String ARG_PARAM2 = "param2";
+
+    // TODO: Rename and change types of parameters
+    private String mParam1;
+    private String mParam2;
+
+    public NormalDistributionCourse() {
+        // Required empty public constructor
+    }
+
+    /**
+     * Use this factory method to create a new instance of
+     * this fragment using the provided parameters.
+     *
+     * @param param1 Parameter 1.
+     * @param param2 Parameter 2.
+     * @return A new instance of fragment NormalDistributionCourse.
+     */
+    // TODO: Rename and change types and number of parameters
+    public static NormalDistributionCourse newInstance(String param1, String param2) {
+        NormalDistributionCourse fragment = new NormalDistributionCourse();
+        Bundle args = new Bundle();
+        args.putString(ARG_PARAM1, param1);
+        args.putString(ARG_PARAM2, param2);
+        fragment.setArguments(args);
+        return fragment;
+    }
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        if (getArguments() != null) {
+            mParam1 = getArguments().getString(ARG_PARAM1);
+            mParam2 = getArguments().getString(ARG_PARAM2);
+        }
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        // Inflate the layout for this fragment
+        return inflater.inflate(R.layout.fragment_normal_distribution_course, container, false);
+    }
+}
\ No newline at end of file

app/src/main/java/com/elearning/probabilityandstatisticsanalyserandeducator/adaptiveLearning/courses/ProbabilityCourse.java

+package com.elearning.probabilityandstatisticsanalyserandeducator.adaptiveLearning.courses;
+
+import android.os.Bundle;
+
+import androidx.fragment.app.Fragment;
+
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import com.elearning.probabilityandstatisticsanalyserandeducator.R;
+
+/**
+ * A simple {@link Fragment} subclass.
+ * Use the {@link ProbabilityCourse#newInstance} factory method to
+ * create an instance of this fragment.
+ */
+public class ProbabilityCourse extends Fragment {
+
+    // TODO: Rename parameter arguments, choose names that match
+    // the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
+    private static final String ARG_PARAM1 = "param1";
+    private static final String ARG_PARAM2 = "param2";
+
+    // TODO: Rename and change types of parameters
+    private String mParam1;
+    private String mParam2;
+
+    public ProbabilityCourse() {
+        // Required empty public constructor
+    }
+
+    /**
+     * Use this factory method to create a new instance of
+     * this fragment using the provided parameters.
+     *
+     * @param param1 Parameter 1.
+     * @param param2 Parameter 2.
+     * @return A new instance of fragment ProbabilityCourse.
+     */
+    // TODO: Rename and change types and number of parameters
+    public static ProbabilityCourse newInstance(String param1, String param2) {
+        ProbabilityCourse fragment = new ProbabilityCourse();
+        Bundle args = new Bundle();
+        args.putString(ARG_PARAM1, param1);
+        args.putString(ARG_PARAM2, param2);
+        fragment.setArguments(args);
+        return fragment;
+    }
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        if (getArguments() != null) {
+            mParam1 = getArguments().getString(ARG_PARAM1);
+            mParam2 = getArguments().getString(ARG_PARAM2);
+        }
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        // Inflate the layout for this fragment
+        return inflater.inflate(R.layout.fragment_probability_course, container, false);
+    }
+}
\ No newline at end of file

app/src/main/java/com/elearning/probabilityandstatisticsanalyserandeducator/adaptiveLearning/courses/ProbabilityDistrributionCourse.java

+package com.elearning.probabilityandstatisticsanalyserandeducator.adaptiveLearning.courses;
+
+import android.os.Bundle;
+
+import androidx.fragment.app.Fragment;
+
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import com.elearning.probabilityandstatisticsanalyserandeducator.R;
+
+/**
+ * A simple {@link Fragment} subclass.
+ * Use the {@link ProbabilityDistrributionCourse#newInstance} factory method to
+ * create an instance of this fragment.
+ */
+public class ProbabilityDistrributionCourse extends Fragment {
+
+    // TODO: Rename parameter arguments, choose names that match
+    // the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
+    private static final String ARG_PARAM1 = "param1";
+    private static final String ARG_PARAM2 = "param2";
+
+    // TODO: Rename and change types of parameters
+    private String mParam1;
+    private String mParam2;
+
+    public ProbabilityDistrributionCourse() {
+        // Required empty public constructor
+    }
+
+    /**
+     * Use this factory method to create a new instance of
+     * this fragment using the provided parameters.
+     *
+     * @param param1 Parameter 1.
+     * @param param2 Parameter 2.
+     * @return A new instance of fragment ProbabilityDistrributionCourse.
+     */
+    // TODO: Rename and change types and number of parameters
+    public static ProbabilityDistrributionCourse newInstance(String param1, String param2) {
+        ProbabilityDistrributionCourse fragment = new ProbabilityDistrributionCourse();
+        Bundle args = new Bundle();
+        args.putString(ARG_PARAM1, param1);
+        args.putString(ARG_PARAM2, param2);
+        fragment.setArguments(args);
+        return fragment;
+    }
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        if (getArguments() != null) {
+            mParam1 = getArguments().getString(ARG_PARAM1);
+            mParam2 = getArguments().getString(ARG_PARAM2);
+        }
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        // Inflate the layout for this fragment
+        return inflater.inflate(R.layout.fragment_probability_distrribution_course, container, false);
+    }
+}
\ No newline at end of file

app/src/main/java/com/elearning/probabilityandstatisticsanalyserandeducator/adaptiveLearning/courses/StandardDeviationCourse.java

+package com.elearning.probabilityandstatisticsanalyserandeducator.adaptiveLearning.courses;
+
+import android.os.Bundle;
+
+import androidx.fragment.app.Fragment;
+
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import com.elearning.probabilityandstatisticsanalyserandeducator.R;
+
+/**
+ * A simple {@link Fragment} subclass.
+ * Use the {@link StandardDeviationCourse#newInstance} factory method to
+ * create an instance of this fragment.
+ */
+public class StandardDeviationCourse extends Fragment {
+
+    // TODO: Rename parameter arguments, choose names that match
+    // the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
+    private static final String ARG_PARAM1 = "param1";
+    private static final String ARG_PARAM2 = "param2";
+
+    // TODO: Rename and change types of parameters
+    private String mParam1;
+    private String mParam2;
+
+    public StandardDeviationCourse() {
+        // Required empty public constructor
+    }
+
+    /**
+     * Use this factory method to create a new instance of
+     * this fragment using the provided parameters.
+     *
+     * @param param1 Parameter 1.
+     * @param param2 Parameter 2.
+     * @return A new instance of fragment StandardDeviation.
+     */
+    // TODO: Rename and change types and number of parameters
+    public static StandardDeviationCourse newInstance(String param1, String param2) {
+        StandardDeviationCourse fragment = new StandardDeviationCourse();
+        Bundle args = new Bundle();
+        args.putString(ARG_PARAM1, param1);
+        args.putString(ARG_PARAM2, param2);
+        fragment.setArguments(args);
+        return fragment;
+    }
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        if (getArguments() != null) {
+            mParam1 = getArguments().getString(ARG_PARAM1);
+            mParam2 = getArguments().getString(ARG_PARAM2);
+        }
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        // Inflate the layout for this fragment
+        return inflater.inflate(R.layout.fragment_standard_deviation, container, false);
+    }
+}
\ No newline at end of file

app/src/main/java/com/elearning/probabilityandstatisticsanalyserandeducator/adaptiveLearning/courses/Z_ScoreCourse.java

+package com.elearning.probabilityandstatisticsanalyserandeducator.adaptiveLearning.courses;
+
+import android.os.Bundle;
+
+import androidx.fragment.app.Fragment;
+
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import com.elearning.probabilityandstatisticsanalyserandeducator.R;
+
+/**
+ * A simple {@link Fragment} subclass.
+ * Use the {@link Z_ScoreCourse#newInstance} factory method to
+ * create an instance of this fragment.
+ */
+public class Z_ScoreCourse extends Fragment {
+
+    // TODO: Rename parameter arguments, choose names that match
+    // the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
+    private static final String ARG_PARAM1 = "param1";
+    private static final String ARG_PARAM2 = "param2";
+
+    // TODO: Rename and change types of parameters
+    private String mParam1;
+    private String mParam2;
+
+    public Z_ScoreCourse() {
+        // Required empty public constructor
+    }
+
+    /**
+     * Use this factory method to create a new instance of
+     * this fragment using the provided parameters.
+     *
+     * @param param1 Parameter 1.
+     * @param param2 Parameter 2.
+     * @return A new instance of fragment Z_ScoreCourse.
+     */
+    // TODO: Rename and change types and number of parameters
+    public static Z_ScoreCourse newInstance(String param1, String param2) {
+        Z_ScoreCourse fragment = new Z_ScoreCourse();
+        Bundle args = new Bundle();
+        args.putString(ARG_PARAM1, param1);
+        args.putString(ARG_PARAM2, param2);
+        fragment.setArguments(args);
+        return fragment;
+    }
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        if (getArguments() != null) {
+            mParam1 = getArguments().getString(ARG_PARAM1);
+            mParam2 = getArguments().getString(ARG_PARAM2);
+        }
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        // Inflate the layout for this fragment
+        return inflater.inflate(R.layout.fragment_z__score_course, container, false);
+    }
+}
\ No newline at end of file

app/src/main/java/com/elearning/probabilityandstatisticsanalyserandeducator/verification_screen.java

@@ -60,7 +60,7 @@ public class verification_screen extends AppCompatActivity {
         final Random myRandom = new Random();
 
         OTP = myRandom.nextInt(10000);
-        System.out.println("OTP"+OTP);
+       System.out.println("OTP"+OTP);
 
         //Add OTP number into Session manger
         SessionManager sessionManager = new SessionManager(this);

app/src/main/res/layout/activity_course_handler.xml

+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout 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"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".adaptiveLearning.CourseHandler">
+
+
+    <FrameLayout
+        android:id="@+id/course_container"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent">
+    </FrameLayout>
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file

app/src/main/res/layout/activity_starting_screen.xml

@@ -38,5 +38,20 @@
         android:background="@color/app_logo_background"
         android:text="Start" />
 
+    <Button
+        android:id="@+id/button_back_quiz"
+        android:layout_width="wrap_content"
+        android:layout_height="51dp"
+        android:layout_alignParentStart="true"
+        android:layout_alignParentTop="true"
+        android:layout_alignParentEnd="true"
+        android:layout_alignParentBottom="true"
+        android:layout_marginStart="149dp"
+        android:layout_marginTop="398dp"
+        android:layout_marginEnd="144dp"
+        android:layout_marginBottom="194dp"
+        android:background="@color/app_logo_background"
+        android:text="Back" />
+
 
 </RelativeLayout>
\ No newline at end of file

app/src/main/res/layout/activity_video_player.xml

+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout 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"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    tools:context=".adaptiveLearning.VideoController">
+
+    <com.google.android.youtube.player.YouTubePlayerView
+        android:id="@+id/YoutubePlayerView"
+        android:layout_width="match_parent"
+        android:layout_height="250dp"/>
+    <Button
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="Play"
+        android:id="@+id/btn_play"
+        android:layout_marginTop="20dp"
+        />
+
+</LinearLayout>
\ No newline at end of file

app/src/main/res/layout/fragment_descriptive_course.xml

+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout 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"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".adaptiveLearning.courses.DescriptiveCourse">
+
+    <!-- TODO: Update blank fragment layout -->
+
+
+    <TextView
+        android:id="@+id/textView1"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Wellcome to Descriptive Statics Course"
+        android:textSize="18sp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintHorizontal_bias="0.581"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintVertical_bias="0.168" />
+
+    <TextView
+        android:id="@+id/textView2"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text=" Mean, Median, Mode and Range"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintHorizontal_bias="0.23"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintVertical_bias="0.3" />
+
+    <Button
+        android:id="@+id/DecriptiveCourse_btn_1"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Button 1"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintHorizontal_bias="0.226"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintVertical_bias="0.378" />
+
+    <TextView
+        android:id="@+id/textView3"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text=" Minimum and Maximum "
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintHorizontal_bias="0.189"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintVertical_bias="0.515" />
+
+    <Button
+        android:id="@+id/DecriptiveCourse_btn_2"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Button 2"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintHorizontal_bias="0.226"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintVertical_bias="0.605" />
+
+    <TextView
+        android:id="@+id/textView4"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text=" First Quartile, Third Quartile and IQR "
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintHorizontal_bias="0.265"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintVertical_bias="0.721" />
+
+    <Button
+        android:id="@+id/DecriptiveCourse_btn_3"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Button 3"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintHorizontal_bias="0.226"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintVertical_bias="0.801" />
+
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file

app/src/main/res/layout/fragment_normal_distribution_course.xml

+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout 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=".adaptiveLearning.courses.NormalDistributionCourse">
+
+    <!-- TODO: Update blank fragment layout -->
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:text="Normal Distribution" />
+
+</FrameLayout>
\ No newline at end of file

app/src/main/res/layout/fragment_probability_course.xml

+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout 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=".adaptiveLearning.courses.ProbabilityCourse">
+
+    <!-- TODO: Update blank fragment layout -->
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:text="Probability" />
+
+</FrameLayout>
\ No newline at end of file

app/src/main/res/layout/fragment_probability_distrribution_course.xml

+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout 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=".adaptiveLearning.courses.ProbabilityDistrributionCourse">
+
+    <!-- TODO: Update blank fragment layout -->
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:text="Probability Distribution" />
+
+</FrameLayout>
\ No newline at end of file

app/src/main/res/layout/fragment_standard_deviation.xml

+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout 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=".adaptiveLearning.courses.StandardDeviationCourse">
+
+    <!-- TODO: Update blank fragment layout -->
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:text="Standerd Deviation" />
+
+</FrameLayout>
\ No newline at end of file

app/src/main/res/layout/fragment_z__score_course.xml

+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout 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=".adaptiveLearning.courses.Z_ScoreCourse">
+
+    <!-- TODO: Update blank fragment layout -->
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:text="Z Score" />
+
+</FrameLayout>
\ No newline at end of file