Activity

package com.techredefined.thedicegame;

import android.graphics.drawable.Drawable;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

import java.util.Random;
import java.util.Timer;

public class MainActivity extends AppCompatActivity {

    ImageView dice;
    Button rollButton,resetButton,holdButton;
    TextView playerTotalScore,computerTotalScore,playerTurnScore,computerTurnScore;
    int diceValue=0,cTurn=0,pTurn=0,cTotal=0,pTotal=0;
    char currentTurn='P';


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        setListenerOnRoll();
        setListenerOnReset();
        setListenerOnHold();
    }
    private void setListenerOnRoll() {
        rollButton = (Button) findViewById(R.id.roll);
        rollButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                rollDice();
            }
        });
    }
    private void setListenerOnHold() {
        holdButton = (Button) findViewById(R.id.hold);
        holdButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                hold();
            }
        });
    }
    private void setListenerOnReset() {
        resetButton = (Button) findViewById(R.id.reset);
        resetButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                resetScore();
            }
        });
    }
    private void rollDice() {
        Random r = new Random();
        diceValue = r.nextInt(6 - 1 + 1) + 1;
        if(pTotal<=100 && cTotal<=100) {
            if(diceValue==1) {
                if(currentTurn=='P') {
                    pTurn=0;
                    hold();
                }
                else {
                    cTurn=0;
                    hold();
                }
            }
            else {
                if(currentTurn=='P') {
                    pTurn = pTurn + diceValue;
                    updateScore();
                }
                else {
                    cTurn = cTurn + diceValue;
                    updateScore();
                }
            }
            dice = (ImageView) findViewById(R.id.dice_image_view);
            String name = "dice"+diceValue;
            int id = getResources().getIdentifier(name, "drawable", getPackageName());
            Drawable diceImgPath = getResources().getDrawable(id);
            dice.setImageDrawable(diceImgPath);
        }
        else {
            if(cTotal>=100)
                Toast.makeText(getApplicationContext(),"Computer Won!",Toast.LENGTH_SHORT).show();
            else
                Toast.makeText(getApplicationContext(),"Player Won!",Toast.LENGTH_SHORT).show();
            rollButton.setEnabled(false);
            holdButton.setEnabled(false);
        }
    }
    private void hold(){
        if(currentTurn=='P') {
            pTotal = pTotal + pTurn;
            currentTurn='C';
            computersTurn();
        }
        else {
            cTotal = cTotal + cTurn;
            currentTurn='P';
        }
        cTurn=0;
        pTurn=0;
        updateScore();

    }
    private void resetScore() {
        rollButton.setEnabled(true);
        holdButton.setEnabled(true);
        pTotal=pTurn=cTotal=cTurn=0;
        diceValue = 0;
        updateScore();
    }
    private void updateScore() {
        playerTotalScore = (TextView) findViewById(R.id.player_tot_score);
        computerTotalScore = (TextView) findViewById(R.id.computer_tot_score);
        playerTurnScore = (TextView) findViewById(R.id.player_turn_score);
        computerTurnScore = (TextView) findViewById(R.id.computer_turn_score);

        playerTotalScore.setText("Player Total Score: "+pTotal);
        computerTotalScore.setText("Computer Total Score: "+cTotal);
        playerTurnScore.setText("Player Turn Score: "+pTurn);
        computerTurnScore.setText("Computer Turn Score: " + cTurn);
    }
    private void computersTurn() {
        rollButton.setEnabled(false);
        holdButton.setEnabled(false);
        while (currentTurn=='C' && cTurn<=20 && cTotal<=100) {
            rollDice();
        }
        hold();
        rollButton.setEnabled(true);
        holdButton.setEnabled(true);
    }
}