You need to complete it so that you keep score for both the Player and the computer, and also show how many tie games.

Main Activity:

package com.John.rockpaperscissors; import androidx.appcompat.app.AppCompatActivity; import android.graphics.Color; import android.os.Bundle; import android.util.Log; import android.widget.Button; import android.widget.TextView; import java.util.Random; public class MainActivity extends AppCompatActivity { Button btnRock, btnPaper, btnScissors; TextView txtPlayerChoice, txtComputerChoice, txtWinner, txtPlayerWins, txtComputerWins, txtTie; enum Choice {ROCK, PAPER, SCISSORS} enum Winner {PLAYER, COMPUTER, TIE} Random random = new Random(); @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); // This is where program execution starts... btnRock = findViewById(R.id.btnRock); btnPaper = findViewById(R.id.btnPaper); btnScissors = findViewById(R.id.btnScissors); txtPlayerChoice = findViewById(R.id.txtPlayerChoice); txtComputerChoice = findViewById(R.id.txtComputerChoice); txtWinner = findViewById(R.id.txtWinner); txtPlayerChoice.setText(""); txtComputerChoice.setText(""); txtWinner.setText(""); btnRock.setOnClickListener(view -> { Log.d("MyMsg", "Rock button pressed..."); PlayGame(Choice.ROCK); }); btnPaper.setOnClickListener(view -> { Log.d("MyMsg", "Paper button pressed..."); PlayGame(Choice.PAPER); }); btnScissors.setOnClickListener(view -> { Log.d("MyMsg", "Scissors button pressed..."); PlayGame(Choice.SCISSORS); }); } // This is where the game logic goes. void PlayGame(Choice playerChoice) { Log.d("MyMsg", "Play game. Player chose " + playerChoice); Log.d("MyMsg", "Player choice value = " + playerChoice.ordinal()); Choice computerChoice; Winner gameResult = Winner.TIE; // Has to be set to something String stringPlayerChoice = ""; String stringComputerChoice = ""; String stringWinner = ""; int number = random.nextInt(3); Log.d("MyMsg", "Computer chose " + number); computerChoice = Choice.values()[number]; Log.d("MyMsg", "Computer chose " + computerChoice); switch(playerChoice) { case ROCK: stringPlayerChoice = "Hard Rock"; break; case PAPER: stringPlayerChoice = "Paper"; break; case SCISSORS: stringPlayerChoice = "Scissors"; break; default: stringPlayerChoice = "Error in playerChoice switch"; } switch(computerChoice) { case ROCK: stringComputerChoice = "Hard Rock"; break; case PAPER: stringComputerChoice = "Paper"; break; case SCISSORS: stringComputerChoice = "Scissors"; break; default: stringComputerChoice = "Error in playerChoice switch"; } txtPlayerChoice.setText("You chose " + stringPlayerChoice); txtComputerChoice.setText("Computer chose " + stringComputerChoice); if (playerChoice == computerChoice) gameResult = Winner.TIE; if (playerChoice == Choice.ROCK && computerChoice == Choice.PAPER) gameResult = Winner.COMPUTER; if (playerChoice == Choice.ROCK && computerChoice == Choice.SCISSORS) gameResult = Winner.PLAYER; if (playerChoice == Choice.PAPER && computerChoice == Choice.ROCK) gameResult = Winner.PLAYER; if (playerChoice == Choice.PAPER && computerChoice == Choice.SCISSORS) gameResult = Winner.COMPUTER; if (playerChoice == Choice.SCISSORS && computerChoice == Choice.ROCK) gameResult = Winner.COMPUTER; if (playerChoice == Choice.SCISSORS && computerChoice == Choice.PAPER) gameResult = Winner.PLAYER; switch (gameResult) { case TIE: stringWinner = "Tie game."; txtWinner.setTextColor(Color.parseColor("#000000")); // Black break; case PLAYER: stringWinner = "You win!!!"; txtWinner.setTextColor(Color.parseColor("#008000")); // Dark green break; case COMPUTER: stringWinner = "Computer wins."; txtWinner.setTextColor(Color.parseColor("#FFA500")); // Orange break; default: stringWinner = "Error in gameResult switch"; } txtWinner.setText(stringWinner); } }

XML: