How to random quiz in an Android Application without Database

I like to make a random quiz with 5 questions. So here's my code in the first question, it is the same with the other questions.

public class alphaquiz1 extends Activity implements OnClickListener{

MediaPlayer yourStereo, mp;
AssetFileDescriptor afd;



@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.quizal1);




        View button1 = this.findViewById(R.id.button1);
        button1.setOnClickListener(this);

        View button2 = this.findViewById(R.id.button2);
        button2.setOnClickListener(this);


        View back= this.findViewById(R.id.buttonback);
        back.setOnClickListener(this);

         ImageView image = (ImageView) findViewById(R.id.imageView1);
            image.setImageResource(R.drawable.alphaquiz1);



         MediaPlayer   mediaPlayer = MediaPlayer.create(this, R.raw.tiktok);
            mediaPlayer.setVolume(8f, 8f);
            mediaPlayer.setLooping(true);
            mediaPlayer.start();
}   




public void onClick(View v) {

        switch(v.getId()){


        case R.id.button1:
             mp = MediaPlayer.create(this, R.raw.correct);
            mp.start();

             View popupView = new View(alphaquiz1.this);
             final PopupWindow popupWindow = new PopupWindow(popupView,
             ViewGroup.LayoutParams.MATCH_PARENT,            ViewGroup.LayoutParams.MATCH_PARENT);
             Drawable drawable =    getResources().getDrawable(R.drawable.correct);

             popupWindow.setBackgroundDrawable(drawable);

             popupWindow.setTouchable(true);
             popupWindow.setFocusable(true);
             popupWindow.setTouchInterceptor(new View.OnTouchListener() {



                    @Override
                    public boolean onTouch(View v, MotionEvent event) {
                        // TODO Auto-generated method stub

                        popupWindow.dismiss();
                        return false;

                    }
             });

             popupWindow.showAtLocation(findViewById(R.id.button1), Gravity.CENTER, 0, 0);

             Intent button1 = new Intent(this, alphaquiz2.class);
            startActivity(button1);




            break;

        case R.id.button2:
             mp = MediaPlayer.create(this, R.raw.wrong);
            mp.start();
            break;

        case R.id.buttonback:
            Intent buttonback = new Intent(this, Alphabets.class);
            startActivity(buttonback);
            break;
        }

    }

@Override
public void onBackPressed(){

  new AlertDialog.Builder(this).setIcon(android.R.drawable.ic_dialog_alert).setTitle("Exit")
  .setMessage("Are you sure you want to exit?")
   .setPositiveButton("Yes", new DialogInterface.OnClickListener() {
                           @Override
                           public void onClick(DialogInterface dialog, int which) {
                              Intent intent = new Intent(Intent.ACTION_MAIN);
                              intent.addCategory(Intent.CATEGORY_HOME);
                              intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                              startActivity(intent);
                              System.exit(0);
                           }
 }).setNegativeButton("No", null).show();
}  

    }

And here it's xml lay out.

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://ift.tt/nIICcg"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/back"
android:orientation="vertical" >

<ImageView
    android:id="@+id/imageView1"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
     android:layout_gravity="center_vertical|center_horizontal"
    android:layout_weight="1.01"
    android:src="@drawable/abc_ab_bottom_transparent_dark_holo" />

<Button
    android:id="@+id/button1"
    android:layout_width="250dp"
    android:layout_height="60dp"
    android:layout_gravity="center_vertical|center_horizontal"
    android:layout_marginTop="20dp"
    android:background="@drawable/buttonyellow"
    android:text="O"
    android:textColor="#000000"
    android:textSize="30sp" />

<Button
    android:id="@+id/button2"
    android:layout_width="246dp"
    android:layout_height="60dp"
    android:layout_gravity="center_vertical|center_horizontal"
    android:layout_marginTop="23dp"
    android:background="@drawable/buttongreen"
    android:text="Z"
    android:textColor="#000000"
    android:textSize="30sp" />

<Button
    android:id="@+id/buttonback"
    android:layout_width="80dp"
    android:layout_height="40dp"
    android:layout_gravity="center_vertical|center_horizontal"
    android:layout_marginBottom="20dp"
    android:layout_marginTop="23dp"
    android:background="@drawable/backbutton"
    android:text="Back"
    android:textColor="#000000"
    android:textSize="25sp" />

    </LinearLayout>

Please help me to random questions, even it don't random answers or option. Thankyou