PROGRAM 12:
XML CODE:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
 android:layout_width="match_parent"
 android:layout_height="match_parent">
 <ImageView
 android:id="@+id/ball"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:src="@drawable/ball"/>
 <TextView
 android:id="@+id/scoreText"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:text="Score: 0"
 android:textSize="24sp"
 android:layout_alignParentTop="true"
 android:layout_centerHorizontal="true" />
</RelativeLayout>
JAVA CODE:
package com.example.program12;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.MotionEvent;
import android.view.View;
import android.widget.ImageView;
import android.widget.TextView;
import java.util.Random;
public class MainActivity extends AppCompatActivity {
 private ImageView ball;
 private Random random = new Random();
 private int score = 0;
 private TextView scoreText;
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);
 ball = findViewById(R.id.ball);
 scoreText = findViewById(R.id.scoreText);
 ball.setOnTouchListener(new View.OnTouchListener() {
 @Override
 public boolean onTouch(View v, MotionEvent event) {
 if (event.getAction() == MotionEvent.ACTION_DOWN) {
 score++;
 scoreText.setText(String.valueOf("Score:"+score));
 moveBall();
 return true;
 }
 return false;
 }
 });
 moveBall();
 }
 private void moveBall () {
 int screenWidth = getResources().getDisplayMetrics().widthPixels;
 int screenHeight =
getResources().getDisplayMetrics().heightPixels;
 int x = random.nextInt(screenWidth - ball.getWidth());
 int y = random.nextInt(screenHeight - ball.getHeight());
 ball.setX(x);
 ball.setY(y);
 }
 }
ball.xml
<?xml version="1.0" encoding="utf-8"?>
<shape
xmlns:android="http://schemas.android.com/apk/res/android">
 <solid android:color="#FF0000"/>
 <size
 android:width="50dp"
 android:height="50dp"/>
 <corners android:radius="25dp"/>
</shape>