Quizz App for students

quizapp_CustomSwipeAdapter.java

package com.example.popescu.quizapp;

import android.content.Context;
import android.support.v4.view.PagerAdapter;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.TextView;

/**
 * Created by POPESCU on 3/25/2017.
 */

public class CustomSwipeAdapter extends PagerAdapter {
    private int[] image_resources = {R.drawable.cambridge, R.drawable.gmat, R.drawable.pearson, R.drawable.freetest};
    private Context ctx;
    private LayoutInflater layoutInflater;

    public CustomSwipeAdapter(Context ctx) {
        this.ctx = ctx;
    }


    @Override
    public int getCount() {
        return image_resources.length;
    }

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

    @Override
    public Object instantiateItem(ViewGroup container, int position) {
        layoutInflater = (LayoutInflater) ctx.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        View item_view = layoutInflater.inflate(R.layout.swipe_layout, container, false);
        ImageView imageView = (ImageView) item_view.findViewById(R.id.image_view);
        TextView textView = (TextView) item_view.findViewById(R.id.image_count);
        imageView.setImageResource(image_resources[position]);
        textView.setText("Choose your exam:" );
        container.addView(item_view);
        return item_view;
    }

    @Override
    public void destroyItem(ViewGroup container, int position, Object object) {
        container.removeView((LinearLayout)object);
    }
}

quizapp_DBHelper.java

package com.example.popescu.quizapp;

import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;

/**
 * Created by POPESCU on 3/26/2017.
 */

public class DBHelper  extends SQLiteOpenHelper {
    //version number to upgrade database version
    //each time if you Add, Edit table, you need to change the
    //version number.
    private static final int DATABASE_VERSION = 200;

    // Database Name
    private static final String DATABASE_NAME = "crud.db";

    public DBHelper(Context context ) {
        super(context, DATABASE_NAME, null, DATABASE_VERSION);
    }

    @Override
    public void onCreate(SQLiteDatabase db) {
        //All necessary tables you like to create will create here

        String CREATE_TABLE_STUDENT = "CREATE TABLE " + Student.TABLE  + "("
                + Student.KEY_ID  + " INTEGER PRIMARY KEY AUTOINCREMENT ,"
                + Student.KEY_name + " TEXT, "
                + Student.KEY_age + " INTEGER, "
                + Student.KEY_cnp + " LONG, "
                + Student.KEY_email + " TEXT )";

        db.execSQL(CREATE_TABLE_STUDENT);

    }

    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
        // Drop older table if existed, all data will be gone!!!
        db.execSQL("DROP TABLE IF EXISTS " + Student.TABLE);

        // Create tables again
        onCreate(db);

    }

}

quizapp_ExitDialog.java

package com.example.popescu.quizapp;

import android.content.DialogInterface;
import android.content.Intent;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class ExitDialog extends AppCompatActivity {
 Button btnExit;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_exit_dialog);

        }
    @Override
    public void onBackPressed() {
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setMessage("Are you sure you want to exit?")
                .setCancelable(false)
                .setPositiveButton("Yes", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int id) {
                        ExitDialog.this.finish();
                    }
                })
                .setNegativeButton("No", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int id) {
                        dialog.cancel();
                    }
                });
        AlertDialog alert = builder.create();
        alert.show();
    }
}

quizapp_Main22Activity.java

package com.example.popescu.quizapp;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

public class Main22Activity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main22);
    }
}

quizapp_Main2Activity.java

package com.example.popescu.quizapp;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class Main2Activity extends AppCompatActivity implements View.OnClickListener {
    Button next;
    Button previous;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);
      next = (Button)findViewById(R.id.next);
        next.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(v.getContext(), Main3Activity.class);
                startActivity(intent);
            }

        });

        previous = (Button)findViewById(R.id.previous);
        previous.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(v.getContext(), MainActivity.class);
                startActivity(intent);
            }

        });
    }



    @Override
    public void onClick (View v){

    }
}

quizapp_Main3Activity.java

package com.example.popescu.quizapp;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class Main3Activity extends AppCompatActivity implements View.OnClickListener {
    Button next;
    Button previous;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main3);
        next = (Button)findViewById(R.id.next);
        next.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(v.getContext(), Main4Activity.class);
                startActivity(intent);
            }

        });

        previous = (Button)findViewById(R.id.previous);
        previous.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(v.getContext(), Main2Activity.class);
                startActivity(intent);
            }

        });
    }



    @Override
    public void onClick (View v){

    }
}

quizapp_Main4Activity.java

package com.example.popescu.quizapp;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class Main4Activity extends AppCompatActivity implements View.OnClickListener {
    Button next;
    Button previous;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main4);
        next = (Button)findViewById(R.id.next);
        next.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(v.getContext(), Main5Activity.class);
                startActivity(intent);
            }

        });
        previous = (Button)findViewById(R.id.previous);
        previous.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(v.getContext(), Main3Activity.class);
                startActivity(intent);
            }

        });

    }



    @Override
    public void onClick (View v){

    }
}

quizapp_Main5Activity.java

package com.example.popescu.quizapp;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class Main5Activity extends AppCompatActivity implements View.OnClickListener {
    Button next;
    Button previous;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main5);
        next = (Button)findViewById(R.id.next);
        next.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(v.getContext(), MainActivityDate.class);
                startActivity(intent);
            }

        });
        previous = (Button)findViewById(R.id.previous);
        previous.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(v.getContext(), Main4Activity.class);
                startActivity(intent);
            }

        });

    }



    @Override
    public void onClick (View v){

    }
}

quizapp_MainActivity.java

package com.example.popescu.quizapp;
import android.content.Context;
import android.content.Intent;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.Gallery;
import android.widget.ImageView;

import java.util.List;
import java.util.Timer;
import java.util.TimerTask;


public class MainActivity extends AppCompatActivity implements View.OnClickListener {
    Button next;
    Button bpg;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        next = (Button) findViewById(R.id.next);
        next.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(v.getContext(), Main2Activity.class);
                startActivity(intent);

            }

        });
        bpg = (Button) findViewById(R.id.bpg);
        bpg.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(v.getContext(), MainActivityPhoto.class);
                startActivity(intent);

            }

        });

        }


    @Override
    public void onClick(View v) {

    }

}

quizapp_MainActivityDate.java

package com.example.popescu.quizapp;

import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import android.support.v7.app.AppCompatActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.Toast;

public class MainActivityDate extends AppCompatActivity {
    DatePicker simpleDatePicker;
    Button submit;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main_date);
        final DatePicker simpleDatePicker = (DatePicker) findViewById(R.id.simpleDatePicker);
        submit = (Button) findViewById(R.id.submitButton);
        submit.setOnClickListener(new View.OnClickListener(){


            @Override
            public void onClick(View v) {
                String confirmation = "You have successfully set the next exam on:" +"\r"+ simpleDatePicker.getDayOfMonth()+ "/"+ (simpleDatePicker.getMonth()+ 1)+"/"+  simpleDatePicker.getYear();

                Toast.makeText(getApplicationContext(),confirmation, Toast.LENGTH_LONG).show();
                Intent intent = new Intent(v.getContext(), MainActivityForm.class);
                startActivity(intent);
            }
        });
        int day = simpleDatePicker.getDayOfMonth();
        int month = simpleDatePicker.getMonth();
        int year = simpleDatePicker.getYear();
        int firstDay = simpleDatePicker.getFirstDayOfWeek();

    }
}

quizapp_MainActivityDB.java

package com.example.popescu.quizapp;

import android.app.ListActivity;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.SearchView;
import android.view.Menu;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.TextView;
import android.widget.Toast;

import java.util.ArrayList;
import java.util.HashMap;

public class MainActivityDB extends ListActivity implements android.view.View.OnClickListener{
    Button btnExit;
    Button btnAdd,btnGetAll;
    TextView student_Id;


    @Override
    public void onClick(View view) {
        if (view== findViewById(R.id.btnAdd)){

            Intent intent = new Intent(this,StudentDetail.class);
            intent.putExtra("student_Id",0);
            startActivity(intent);

        }else {

            StudentRepo repo = new StudentRepo(this);

            ArrayList<HashMap<String, String>> studentList =  repo.getStudentList();
            if(studentList.size()!=0) {
                ListView lv = getListView();
                lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
                    @Override
                    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                        student_Id = (TextView) view.findViewById(R.id.student_Id);
                        String studentId = student_Id.getText().toString();
                        Intent objIndent = new Intent(getApplicationContext(),StudentDetail.class);
                        objIndent.putExtra("student_Id", Integer.parseInt( studentId));
                        startActivity(objIndent);
                    }
                });
                ListAdapter adapter = new SimpleAdapter( MainActivityDB.this,studentList, R.layout.view_student_entry, new String[] { "id","name"}, new int[] {R.id.student_Id, R.id.student_name});
                setListAdapter(adapter);
            }else{
                Toast.makeText(this,"No student!",Toast.LENGTH_SHORT).show();
            }

        }
        btnExit = (Button)findViewById(R.id.btnExit);
        btnExit.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(v.getContext(), ExitDialog.class);
                startActivity(intent);
            }

        });

    }


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


        btnAdd = (Button) findViewById(R.id.btnAdd);
        btnAdd.setOnClickListener(this);

        btnGetAll = (Button) findViewById(R.id.btnGetAll);
        btnGetAll.setOnClickListener(this);

    }


}

quizapp_MainActivityForm.java

package com.example.popescu.quizapp;

import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.LinearLayout;

import com.example.popescu.quizapp.R;

public class MainActivityForm extends AppCompatActivity {
    Button dtb;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main_form);
        dtb = (Button)findViewById(R.id.dtb);
        dtb.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(v.getContext(), MainActivityDB.class);
                startActivity(intent);
            }

        });
    }
}

quizapp_MainActivityPhoto.java

package com.example.popescu.quizapp;

import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;

import java.util.Timer;
import java.util.TimerTask;

public class MainActivityPhoto extends AppCompatActivity {
    ViewPager viewPager;
    CustomSwipeAdapter adapter;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main_photo);

        viewPager = (ViewPager) findViewById(R.id.view_pager);
        adapter = new CustomSwipeAdapter(this);
        viewPager.setAdapter(adapter);
        Timer tm = new Timer();
        tm.scheduleAtFixedRate(new MyTimer(),2000,2000);
    }
public class MyTimer extends TimerTask {
    @Override
    public void run(){
        MainActivityPhoto.this.runOnUiThread(new Runnable() {
            @Override
            public void run() {
                if(viewPager.getCurrentItem()==0){
                    viewPager.setCurrentItem(1);
                }
                else if(viewPager.getCurrentItem()==1) {
                    viewPager.setCurrentItem(2);
                }
                else if(viewPager.getCurrentItem()==2) {
                    viewPager.setCurrentItem(3);
                }
                else if(viewPager.getCurrentItem()==3){
                        viewPager.setCurrentItem(4);
                }else
                {
                    viewPager.setCurrentItem(0);
                }
            }

        });
    }
}
}

quizapp_Student.java

package com.example.popescu.quizapp;

/**
 * Created by POPESCU on 3/26/2017.
 */

public class Student {
    // Labels table name
    public static final String TABLE = "Student";

    // Labels Table Columns names
    public static final String KEY_ID = "id";
    public static final String KEY_name = "name";
    public static final String KEY_email = "email";
    public static final String KEY_age = "age";
    public static final String KEY_cnp= "cnp";


    // property help us to keep data
    public int student_ID;
    public String name;
    public String email;
    public int age;
    public long cnp;

}

quizapp_StudentDetail.java

package com.example.popescu.quizapp;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class StudentDetail extends AppCompatActivity implements android.view.View.OnClickListener{

    Button btnSave ,  btnDelete;
    Button btnClose;
    EditText editTextName;
    EditText editTextEmail;
    EditText editTextAge;
    EditText editTextCnp;
    private int _Student_Id=0;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_student_detail2);


        btnSave = (Button) findViewById(R.id.btnSave);
        btnDelete = (Button) findViewById(R.id.btnDelete);
        btnClose = (Button) findViewById(R.id.btnClose);

        editTextName = (EditText) findViewById(R.id.editTextName);
        editTextEmail = (EditText) findViewById(R.id.editTextEmail);
        editTextAge = (EditText) findViewById(R.id.editTextAge);
        editTextCnp = (EditText) findViewById(R.id.editTextCnp);


        btnSave.setOnClickListener(this);
        btnDelete.setOnClickListener(this);
        btnClose.setOnClickListener(this);


        _Student_Id =0;
        Intent intent = getIntent();
        _Student_Id =intent.getIntExtra("student_Id", 0);
        StudentRepo repo = new StudentRepo(this);
        Student student = new Student();
        student = repo.getStudentById(_Student_Id);

        editTextAge.setText(String.valueOf(student.age));
        editTextName.setText(student.name);
        editTextEmail.setText(student.email);
        editTextCnp.setText(String.valueOf(student.cnp));
    }



    public void onClick(View view) {
        if (view == findViewById(R.id.btnSave)){
            StudentRepo repo = new StudentRepo(this);
            Student student = new Student();
            student.age= Integer.parseInt(editTextAge.getText().toString());
            student.cnp= Long.parseLong(editTextCnp.getText().toString());
            student.email=editTextEmail.getText().toString();
            student.name=editTextName.getText().toString();
            student.student_ID=_Student_Id;

            if (_Student_Id==0){
                _Student_Id = repo.insert(student);

                Toast.makeText(this,"New Student Insert",Toast.LENGTH_SHORT).show();
            }else{

                repo.update(student);
                Toast.makeText(this,"Student Record updated",Toast.LENGTH_SHORT).show();
            }
        }else if (view== findViewById(R.id.btnDelete)){
            StudentRepo repo = new StudentRepo(this);
            repo.delete(_Student_Id);
            Toast.makeText(this, "Student Record Deleted", Toast.LENGTH_SHORT);
            finish();
        }else if (view== findViewById(R.id.btnClose)){
            finish();
        }


    }

}

quizapp_StudentRepo.java

package com.example.popescu.quizapp;

import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;

import java.util.ArrayList;
import java.util.HashMap;

/**
 * Created by POPESCU on 3/26/2017.
 */

public class StudentRepo {
    private DBHelper dbHelper;

    public StudentRepo(Context context) {
        dbHelper = new DBHelper(context);
    }

    public int insert(Student student) {

        //Open connection to write data
        SQLiteDatabase db = dbHelper.getWritableDatabase();
        ContentValues values = new ContentValues();
        values.put(Student.KEY_age, student.age);
        values.put(Student.KEY_cnp, student.cnp);
        values.put(Student.KEY_email,student.email);
        values.put(Student.KEY_name, student.name);

        // Inserting Row
        long student_Id = db.insert(Student.TABLE, null, values);
        db.close(); // Closing database connection
        return (int) student_Id;
    }

    public void delete(int student_Id) {

        SQLiteDatabase db = dbHelper.getWritableDatabase();
        // It's a good practice to use parameter ?, instead of concatenate string
        db.delete(Student.TABLE, Student.KEY_ID + "= ?", new String[] { String.valueOf(student_Id) });
        db.close(); // Closing database connection
    }

    public void update(Student student) {

        SQLiteDatabase db = dbHelper.getWritableDatabase();
        ContentValues values = new ContentValues();

        values.put(Student.KEY_age, student.age);
        values.put(Student.KEY_email,student.email);
        values.put(Student.KEY_name, student.name);
        values.put(Student.KEY_cnp, student.cnp);

        // It's a good practice to use parameter ?, instead of concatenate string
        db.update(Student.TABLE, values, Student.KEY_ID + "= ?", new String[] { String.valueOf(student.student_ID) });
        db.close(); // Closing database connection
    }

    public ArrayList<HashMap<String, String>> getStudentList() {
        //Open connection to read only
        SQLiteDatabase db = dbHelper.getReadableDatabase();
        String selectQuery =  "SELECT  " +
                Student.KEY_ID + "," +
                Student.KEY_name + "," +
                Student.KEY_cnp + "," +
                Student.KEY_email + "," +
                Student.KEY_age +
                " FROM " + Student.TABLE;

        //Student student = new Student();
        ArrayList<HashMap<String, String>> studentList = new ArrayList<HashMap<String, String>>();

        Cursor cursor = db.rawQuery(selectQuery, null);
        // looping through all rows and adding to list

        if (cursor.moveToFirst()) {
            do {
                HashMap<String, String> student = new HashMap<String, String>();
                student.put("id", cursor.getString(cursor.getColumnIndex(Student.KEY_ID)));
                student.put("name", cursor.getString(cursor.getColumnIndex(Student.KEY_name)));
                studentList.add(student);

            } while (cursor.moveToNext());
        }

        cursor.close();
        db.close();
        return studentList;

    }

    public Student getStudentById(int Id){
        SQLiteDatabase db = dbHelper.getReadableDatabase();
        String selectQuery =  "SELECT  " +
                Student.KEY_ID + "," +
                Student.KEY_name + "," +
                Student.KEY_email + "," +
                Student.KEY_age + "," +
                Student.KEY_cnp +
                " FROM " + Student.TABLE
                + " WHERE " +
                Student.KEY_ID + "=?";// It's a good practice to use parameter ?, instead of concatenate string

        int iCount =0;
        Student student = new Student();

        Cursor cursor = db.rawQuery(selectQuery, new String[] { String.valueOf(Id) } );

        if (cursor.moveToFirst()) {
            do {
                student.student_ID =cursor.getInt(cursor.getColumnIndex(Student.KEY_ID));
                student.name =cursor.getString(cursor.getColumnIndex(Student.KEY_name));
                student.email  =cursor.getString(cursor.getColumnIndex(Student.KEY_email));
                student.age =cursor.getInt(cursor.getColumnIndex(Student.KEY_age));
                student.cnp =cursor.getInt(cursor.getColumnIndex(Student.KEY_cnp));

            } while (cursor.moveToNext());
        }

        cursor.close();
        db.close();
        return student;
    }

}