Main Acitivity.java

package com.example.mypc.courtcounter;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.TextView;

import java.text.NumberFormat;

public class MainActivity extends AppCompatActivity {

    // Tracks the score for Team A
    int scoreTeamA = 0;

    // Tracks the score for Team B
    int scoreTeamB = 0;

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

    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimpSlifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }

    public void addSixForTeamA(View v) {
        scoreTeamA = scoreTeamA + 6;
        displayForTeamA(scoreTeamA);
    }
    /**
     * Increase the score for Team A by 1 point.
     */
    public void addOneForTeamA(View v) {
        scoreTeamA = scoreTeamA + 1;
        displayForTeamA(scoreTeamA);
    }

    /**
     * Increase the score for Team A by 2 points.
     */
    public void addTwoForTeamA(View v) {
        scoreTeamA = scoreTeamA + 2;
        displayForTeamA(scoreTeamA);
    }

    /**
     * Increase the score for Team A by 3 points.
     */
    public void addThreeForTeamA(View v) {
        scoreTeamA = scoreTeamA + 3;
        displayForTeamA(scoreTeamA);
    }


    /**
     * Increase the score for Team B by 6 points.
     */

    public void addSixForTeamB(View v) {
        scoreTeamB = scoreTeamB + 6;
        displayForTeamB(scoreTeamB);
    }

    /**
     * Increase the score for Team B by 1 point.
     */
    public void addOneForTeamB(View v) {
        scoreTeamB = scoreTeamB + 1;
        displayForTeamB(scoreTeamB);
    }

    /**
     * Increase the score for Team B by 2 points.
     */
    public void addTwoForTeamB(View v) {
        scoreTeamB = scoreTeamB + 2;
        displayForTeamB(scoreTeamB);
    }

    /**
     * Increase the score for Team B by 3 points.
     */
    public void addThreeForTeamB(View v) {
        scoreTeamB = scoreTeamB + 3;
        displayForTeamB(scoreTeamB);
    }


    /**
     * Resets the score for both teams back to 0.
     */
    public void resetScore(View v) {
        scoreTeamA = 0;
        scoreTeamB = 0;
        displayForTeamA(scoreTeamA);
        displayForTeamB(scoreTeamB);
    }

    public void totalscore(View view) {

        int allscore = calculatescore();

        String scoreMessage = createOrderSummary(scoreTeamA, scoreTeamB, allscore);

        displaytotal(scoreMessage);


        Intent shareIntent = new Intent(Intent.ACTION_SEND);
        shareIntent.setType("text/plain");
        shareIntent.putExtra(Intent.EXTRA_TEXT,"Teams scores "+ allscore );
        shareIntent.putExtra(Intent.EXTRA_SUBJECT,"App score!");

        startActivity(Intent.createChooser(shareIntent, "Share"));


    }


    private int calculatescore() {
        int allscore;
        allscore = scoreTeamA + scoreTeamB;
        return allscore;
    }


    /**
     * Displays the given score for Team A.
     */
    public void displayForTeamA(int score) {
        TextView scoreView = (TextView) findViewById(R.id.team_a_score);
        scoreView.setText(String.valueOf(score));
    }

    /**
     * Displays the given score for Team B.
     */
    public void displayForTeamB(int score) {
        TextView scoreView = (TextView) findViewById(R.id.team_b_score);
        scoreView.setText(String.valueOf(score));
    }


    private String createOrderSummary(int scoreTeamA, int scoreTeamB, int allscore
    ) {

        String scoreMessage = "Team A Score :    " + scoreTeamA;
        scoreMessage += "\n" + "Team B Score :    " + scoreTeamB;
        scoreMessage += "\n" + "Total Score :      " + allscore;

        return scoreMessage;

    }




    private void displaytotal(String message) {
        TextView orderSummaryTextView = (TextView) findViewById(R.id.score_summary);
        orderSummaryTextView.setText(message);

    }
}