ScoreKeeper - minimal soccer score counting app

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/colorPrimary"
    tools:context=".MainActivity">

    <TextView
        android:id="@+id/app_title"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:fontFamily="sans-serif-medium"
        android:padding="16dp"
        android:text="ScoreKeeper"
        android:textColor="@android:color/white"
        android:textSize="20sp" />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@id/app_title"
        android:baselineAligned="false"
        android:orientation="horizontal">

        <LinearLayout
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_margin="16dp"
            android:layout_weight="1"
            android:orientation="vertical">

            <TextView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:fontFamily="sans-serif-medium"
                android:gravity="center_horizontal"
                android:paddingBottom="16dp"
                android:text="Team A"
                android:textColor="@android:color/white"
                android:textSize="24sp" />

            <TextView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:fontFamily="sans-serif-condensed"
                android:gravity="center_horizontal"
                android:text="Goals"
                android:textAllCaps="true"
                android:textColor="@android:color/white"
                android:textStyle="bold" />

            <TextView
                android:id="@+id/goal_count_a"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:fontFamily="sans-serif-light"
                android:gravity="center_horizontal"
                android:includeFontPadding="false"
                android:text="0"
                android:textColor="@android:color/white"
                android:textSize="80sp" />

            <TextView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:fontFamily="sans-serif-condensed"
                android:gravity="center_horizontal"
                android:text="Fouls"
                android:textAllCaps="true"
                android:textColor="@android:color/white"
                android:textStyle="bold" />

            <TextView
                android:id="@+id/foul_count_a"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:fontFamily="sans-serif-light"
                android:gravity="center_horizontal"
                android:text="0"
                android:textColor="@android:color/white"
                android:textSize="56sp" />

            <Button
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:backgroundTint="@color/colorPrimaryDark"
                android:onClick="onGoalA"
                android:text="+ Goal" />

            <Button
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:backgroundTint="@color/colorPrimaryDark"
                android:onClick="onFoulA"
                android:text="+ Foul" />

        </LinearLayout>

        <LinearLayout
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_margin="16dp"
            android:layout_weight="1"
            android:orientation="vertical">

            <TextView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:fontFamily="sans-serif-medium"
                android:gravity="center_horizontal"
                android:paddingBottom="16dp"
                android:text="Team B"
                android:textColor="@android:color/white"
                android:textSize="24sp" />

            <TextView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:fontFamily="sans-serif-condensed"
                android:gravity="center_horizontal"
                android:text="Goals"
                android:textAllCaps="true"
                android:textColor="@android:color/white"
                android:textStyle="bold" />

            <TextView
                android:id="@+id/goal_count_b"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:fontFamily="sans-serif-light"
                android:gravity="center_horizontal"
                android:includeFontPadding="false"
                android:text="0"
                android:textColor="@android:color/white"
                android:textSize="80sp" />

            <TextView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:fontFamily="sans-serif-condensed"
                android:gravity="center_horizontal"
                android:text="Fouls"
                android:textAllCaps="true"
                android:textColor="@android:color/white"
                android:textStyle="bold" />

            <TextView
                android:id="@+id/foul_count_b"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:fontFamily="sans-serif-light"
                android:gravity="center_horizontal"
                android:text="0"
                android:textColor="@android:color/white"
                android:textSize="56sp" />

            <Button
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:backgroundTint="@color/colorPrimaryDark"
                android:onClick="onGoalB"
                android:text="+ Goal" />

            <Button
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:backgroundTint="@color/colorPrimaryDark"
                android:onClick="onFoulB"
                android:text="+ Foul" />

        </LinearLayout>

    </LinearLayout>

    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_margin="16dp"
        android:backgroundTint="@color/colorPrimaryDark"
        android:onClick="onReset"
        android:text="Reset" />

</RelativeLayout>

MainActivity.java

package com.example.android.scorekeeper;

import android.support.constraint.solver.Goal;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

    int goalCountA, foulCountA, goalCountB, foulCountB = 0;

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

    public void onGoalA(View view) {
        goalCountA++;
        displayGoalCountA(goalCountA);
    }

    public void onFoulA(View view) {
        foulCountA++;
        displayFoulCountA(foulCountA);
    }

    public void onGoalB(View view) {
        goalCountB++;
        displayGoalCountB(goalCountB);
    }

    public void onFoulB(View view) {
        foulCountB++;
        displayFoulCountB(foulCountB);
    }

    public void onReset(View view) {
        goalCountA = 0;
        foulCountA = 0;
        goalCountB = 0;
        foulCountB = 0;
        displayGoalCountA(goalCountA);
        displayFoulCountA(foulCountA);
        displayGoalCountB(goalCountB);
        displayFoulCountB(foulCountB);
    }

    public void displayGoalCountA(int count) {
        TextView countView = (TextView) findViewById(R.id.goal_count_a);
        countView.setText(String.valueOf(count));
    }

    public void displayFoulCountA(int count) {
        TextView countView = (TextView) findViewById(R.id.foul_count_a);
        countView.setText(String.valueOf(count));
    }

    public void displayGoalCountB(int count) {
        TextView countView = (TextView) findViewById(R.id.goal_count_b);
        countView.setText(String.valueOf(count));
    }

    public void displayFoulCountB(int count) {
        TextView countView = (TextView) findViewById(R.id.foul_count_b);
        countView.setText(String.valueOf(count));
    }
}

styles.xml

<resources>

    <!-- Base application theme. -->
    <style name="AppTheme" parent="Theme.AppCompat.NoActionBar">
        <!-- Customize your theme here. -->
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@android:color/holo_green_dark</item>
        <item name="android:navigationBarColor">@color/colorPrimaryDark</item>
    </style>

</resources>