JAVA. ANDROID STUDIO.

I want to implement some features into this code. I just dont know how to go about it$.$

I would like a start button, image after "boom" $($after submarine was found$).$ I would also like to clean up the code.

Thank you so much!

$//$ If so$,$ keep YOUR line$-$ not this one

package com.gamecodeschool.c$7$subhunter;

$//$ These are all the classes of other people's

$//($Android$)$ code that we use in Sub Hunt

import android.app.Activity;

import android.os$.$Bundle;

import android.view.MotionEvent;

import android.util.Log;

import android.graphics.Bitmap;

import android.graphics.Canvas;

import android.graphics.Color;

import android.graphics.Paint;

import android.graphics.Point;

import android.view.Display;

import android.widget.ImageView;

import java.util.Random;

public class SubHunter extends Activity $\{$

$//$ These variables can be "seen"

$//$ throughout the SubHunter class

int numberHorizontalPixels;

int numberVerticalPixels;

int blockSize;

int gridWidth $=40$;

int gridHeight;

float horizontalTouched $=-100$;

float verticalTouched $=-100$;

int subHorizontalPosition;

int subVerticalPosition;

boolean hit $=$ false;

int shotsTaken;

int distanceFromSub;

boolean debugging $=$ false;

$//$ Here are all the objects$($instances$)$

$//$ of classes that we need to do some drawing

ImageView gameView;

Bitmap blankBitmap;

Canvas canvas;

Paint paint;

$/*$

Android runs this code just before

the app is seen by the player.

This makes it a good place to add

the code that is needed for

the one$-$time setup.

$*/$

@Override

protected void onCreate$($Bundle savedInstanceState$)\{$

super.onCreate$($savedInstanceState$)$;

$//$ Get the current device's screen resolution

Display display $=$ getWindowManager$().$getDefaultDisplay$()$;

Point size $=$ new Point$()$;

display.getSize$($size$)$;

$//$ Initialize our size based variables based on the screen resolution

numberHorizontalPixels $=$ size.x;

numberVerticalPixels $=$ size.y;

blockSize $=$ numberHorizontalPixels $/$ gridWidth;

gridHeight $=$ numberVerticalPixels $/$ blockSize;

$//$ Initialize all the objects ready for drawing

blankBitmap $=$ Bitmap.createBitmap$($numberHorizontalPixels$,$

numberVerticalPixels,

Bitmap.Config.ARGB$\_8888)$;

canvas $=$ new Canvas$($blankBitmap$)$;

gameView $=$ new ImageView$($this$)$;

paint $=$ new Paint$()$;

$//$ Tell Android to set our drawing

$//$ as the view for this app

setContentView$($gameView$)$;

Log.d$("$Debugging$","$In onCreate"$)$;

newGame$()$;

draw$()$;

$\}$

$/*$

This code will execute when a new

game needs to be started. It will

happen when the app is first started

and after the player wins a game.

$*/$

void newGame$()\{$

Random random $=$ new Random$()$;

subHorizontalPosition $=$ random.nextInt$($gridWidth$)$;

subVerticalPosition $=$ random.nextInt$($gridHeight$)$;

shotsTaken $=0$;

Log.d$("$Debugging$","$In newGame"$)$;

$\}$

$/*$

Here we will do all the drawing.

The grid lines, the HUD and

the touch indicator

$*/$

void draw$()\{$

gameView.setImageBitmap$($blankBitmap$)$;

$//$ Wipe the screen with a white color

canvas.drawColor$($Color$.$argb$(255,255,255,255))$;

$//$ Change the paint color to black

paint.setColor$($Color$.$argb$(255,0,0,0))$;

$//$ Draw the vertical lines of the grid

for$($int i $=0$; i $<$ gridWidth; i$++)\{$

canvas.drawLine$($blockSize $*$ i$,0,$

blockSize $*$ i$,$ numberVerticalPixels,

paint$)$;

$\}$

$//$ Draw the horizontal lines of the grid

for$($int i $=0$; i $<$ gridHeight; i$++)\{$

canvas.drawLine$(0,$ blockSize $*$ i$,$

numberHorizontalPixels, blockSize $*$ i$,$

paint$)$;

$\}$

$//$ Draw the player's shot

canvas.drawRect$($horizontalTouched $*$ blockSize,

verticalTouched $*$ blockSize,

$($horizontalTouched $*$ blockSize$)+$ blockSize,

$($verticalTouched $*$ blockSize$)+$ blockSize,

paint $)$;

$//$ Re$-$size the text appropriate for the

$//$ score and distance text

paint.setTextSize$($blockSize $*2)$;

paint.setColor$($Color$.$argb$(255,0,0,255))$;

canvas.drawText$($

"Shots Taken: $"+$ shotsTaken $+$

$"$ Distance: $"+$ distanceFromSub,

blockSize, blockSize $*1\mathrm{.}75$f$,$

paint$)$;

Log.d$("$Debugging$","$In draw"$)$;

if $($debugging$)\{$