TicTocTow Game Code

 java Part : 

package first.learn.tictoctowgame;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;


import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.AppCompatButton;

import android.annotation.SuppressLint;
import android.graphics.Color;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;

import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.AppCompatButton;
import androidx.core.content.ContextCompat;

import android.annotation.SuppressLint;
import android.graphics.Color;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    int flag = 0;
    int moveCount = 0;
    int gameStatus = 0;
    TextView result;
    AppCompatButton btn_1, btn_2, btn_3, btn_4, btn_5, btn_6, btn_7, btn_8, btn_9;
    String bv_1, bv_2, bv_3, bv_4, bv_5, bv_6, bv_7, bv_8, bv_9;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        init();
    }


    public void checkResult(View view){
        AppCompatButton clickedButton = (AppCompatButton) view;

        if (!clickedButton.getText().toString().equalsIgnoreCase("") || gameStatus==1){
            return;
        }

        moveCount++;

        if (flag == 0){
            clickedButton.setText("X");
            flag = 1;
        }else{
            clickedButton.setText("O");
            flag = 0;
        }

        if (moveCount > 4){
            assignButtonText();
            if (bv_1.equals(bv_2) && bv_2.equals(bv_3) && !bv_1.equals("")){
                gameResult(btn_1, btn_2, btn_3, bv_1);
            }else if(bv_4.equals(bv_5) && bv_5.equals(bv_6) && !bv_4.equals("")){
                gameResult(btn_4, btn_5, btn_6, bv_4);
            }else if(bv_7.equals(bv_8) && bv_8.equals(bv_9) && !bv_7.equals("")){
                gameResult(btn_7, btn_8, btn_9, bv_7);
            }else if(bv_1.equals(bv_4) && bv_4.equals(bv_7) && !bv_1.equals("")){
                gameResult(btn_1, btn_4, btn_7, bv_1);
            }else if(bv_2.equals(bv_5) && bv_5.equals(bv_8) && !bv_2.equals("")){
                gameResult(btn_2, btn_5, btn_8, bv_2);
            }else if(bv_3.equals(bv_6) && bv_6.equals(bv_9) && !bv_3.equals("")){
                gameResult(btn_3, btn_6, btn_9, bv_3);
            }else if(bv_1.equals(bv_5) && bv_5.equals(bv_9) && !bv_1.equals("")){
                gameResult(btn_1, btn_5, btn_9, bv_1);
            }else if(bv_3.equals(bv_5) && bv_5.equals(bv_7) && !bv_3.equals("")){
                gameResult(btn_3, btn_5, btn_7, bv_3);
            }else if(moveCount >= 9 ){
                result.setText("Match Draw");
                result.setBackgroundColor(getResources().getColor(R.color.red));
            }
        }

    }


    public void gameResult(AppCompatButton bt1, AppCompatButton bt2, AppCompatButton bt3, String winner){
        bt1.setBackgroundColor(getResources().getColor(R.color.green));
        bt2.setBackgroundColor(getResources().getColor(R.color.green));
        bt3.setBackgroundColor(getResources().getColor(R.color.green));
        result.setText(winner + " is Winner");
        gameStatus = 1;
    }

    public void restartGame(){
        btn_1.setText("");
        btn_2.setText("");
        btn_3.setText("");
        btn_4.setText("");
        btn_5.setText("");
        btn_6.setText("");
        btn_7.setText("");
        btn_8.setText("");
        btn_9.setText("");
        result.setText("WELCOME");
        flag = 0;
        moveCount = 0;
        gameStatus = 0;
        result.setBackgroundColor(Color.parseColor("#000000"));
        btn_1.setBackgroundColor(ContextCompat.getColor(MainActivity.this, R.color.orange));
        btn_2.setBackgroundColor(getResources().getColor(R.color.orange));
        btn_3.setBackgroundColor(getResources().getColor(R.color.orange));
        btn_4.setBackgroundColor(getResources().getColor(R.color.orange));
        btn_5.setBackgroundColor(getResources().getColor(R.color.orange));
        btn_6.setBackgroundColor(getResources().getColor(R.color.orange));
        btn_7.setBackgroundColor(getResources().getColor(R.color.orange));
        btn_8.setBackgroundColor(getResources().getColor(R.color.orange));
        btn_9.setBackgroundColor(getResources().getColor(R.color.orange));
    }

    public void assignButtonText(){
        bv_1 = btn_1.getText().toString();
        bv_2 = btn_2.getText().toString();
        bv_3 = btn_3.getText().toString();
        bv_4 = btn_4.getText().toString();
        bv_5 = btn_5.getText().toString();
        bv_6 = btn_6.getText().toString();
        bv_7 = btn_7.getText().toString();
        bv_8 = btn_8.getText().toString();
        bv_9 = btn_9.getText().toString();
    }
    public void init(){
        btn_1 = (AppCompatButton) findViewById(R.id.btn_1);
        btn_2 = (AppCompatButton) findViewById(R.id.btn_2);
        btn_3 = (AppCompatButton) findViewById(R.id.btn_3);
        btn_4 = (AppCompatButton) findViewById(R.id.btn_4);
        btn_5 = (AppCompatButton) findViewById(R.id.btn_5);
        btn_6 = (AppCompatButton) findViewById(R.id.btn_6);
        btn_7 = (AppCompatButton) findViewById(R.id.btn_7);
        btn_8 = (AppCompatButton) findViewById(R.id.btn_8);
        btn_9 = (AppCompatButton) findViewById(R.id.btn_9);
        result = (TextView) findViewById(R.id.result);
    }

    public void restartGame(View view) {
        restartGame();
    }
}

xml part : 

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center"
    android:orientation="vertical"
    tools:context=".MainActivity">

    <TextView
        android:layout_width="wrap_content"
        android:id="@+id/result"
        android:text="WELCOME"
        android:layout_marginBottom="30dp"
        android:textSize="20sp"
        android:textStyle="bold"
        android:textColor="@color/white"
        android:background="@color/black"
        android:paddingHorizontal="20dp"
        android:paddingVertical="7dp"
        android:layout_height="wrap_content"/>

    <GridLayout
        android:layout_height="wrap_content"
        android:columnCount="3"
        android:rowCount="3"
        android:layout_width="wrap_content">

        <androidx.appcompat.widget.AppCompatButton
            android:id="@+id/btn_1"
            android:onClick="checkResult"
            android:background="@color/orange"
            android:layout_marginBottom="10dp"
            android:layout_marginRight="10dp"
            android:textStyle="bold"
            android:textSize="20sp"
            android:textColor="@color/white"/>

        <androidx.appcompat.widget.AppCompatButton
            android:id="@+id/btn_2"
            android:onClick="checkResult"
            android:background="@color/orange"
            android:layout_marginBottom="10dp"
            android:layout_marginRight="10dp"
            android:textStyle="bold"
            android:textSize="20sp"
            android:textColor="@color/white"/>

        <androidx.appcompat.widget.AppCompatButton
            android:id="@+id/btn_3"
            android:onClick="checkResult"
            android:background="@color/orange"
            android:layout_marginBottom="10dp"
            android:textStyle="bold"
            android:textSize="20sp"
            android:textColor="@color/white"/>

        <androidx.appcompat.widget.AppCompatButton
            android:id="@+id/btn_4"
            android:onClick="checkResult"
            android:background="@color/orange"
            android:layout_marginBottom="10dp"
            android:layout_marginRight="10dp"
            android:textStyle="bold"
            android:textSize="20sp"
            android:textColor="@color/white"/>

        <androidx.appcompat.widget.AppCompatButton
            android:id="@+id/btn_5"
            android:onClick="checkResult"
            android:background="@color/orange"
            android:layout_marginBottom="10dp"
            android:layout_marginRight="10dp"
            android:textStyle="bold"
            android:textSize="20sp"
            android:textColor="@color/white"/>

        <androidx.appcompat.widget.AppCompatButton
            android:id="@+id/btn_6"
            android:onClick="checkResult"
            android:background="@color/orange"
            android:layout_marginBottom="10dp"
            android:textStyle="bold"
            android:textSize="20sp"
            android:textColor="@color/white"/>

        <androidx.appcompat.widget.AppCompatButton
            android:id="@+id/btn_7"
            android:onClick="checkResult"
            android:background="@color/orange"
            android:layout_marginBottom="10dp"
            android:layout_marginRight="10dp"
            android:textStyle="bold"
            android:textSize="20sp"
            android:textColor="@color/white"/>

        <androidx.appcompat.widget.AppCompatButton
            android:id="@+id/btn_8"
            android:onClick="checkResult"
            android:background="@color/orange"
            android:layout_marginBottom="10dp"
            android:layout_marginRight="10dp"
            android:textStyle="bold"
            android:textSize="20sp"
            android:textColor="@color/white"/>

        <androidx.appcompat.widget.AppCompatButton
            android:id="@+id/btn_9"
            android:onClick="checkResult"
            android:background="@color/orange"
            android:layout_marginBottom="10dp"
            android:textStyle="bold"
            android:textSize="20sp"
            android:textColor="@color/white"/>
    </GridLayout>

    <androidx.appcompat.widget.AppCompatButton
        android:layout_width="wrap_content"
        android:text="Restart Game"
        android:background="@color/black"
        android:textColor="@color/white"
        android:paddingHorizontal="20dp"
        android:layout_marginTop="30dp"
        android:onClick="restartGame"
        android:layout_height="wrap_content"/>

</LinearLayout>

Color.xml : 

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <color name="purple_200">#FFBB86FC</color>
    <color name="purple_500">#FF6200EE</color>
    <color name="purple_700">#FF3700B3</color>
    <color name="teal_200">#FF03DAC5</color>
    <color name="teal_700">#FF018786</color>
    <color name="black">#FF000000</color>
    <color name="white">#FFFFFFFF</color>

    <color name="orange">#DD2C00</color>
    <color name="red">#D50000</color>
    <color name="green">#F309653B</color>



</resources>