Question

Create a Scorekeeper app in android studio by using java language

- Layouts | Widgets

• Create the layout for your score keeping app. The app should have:
  • Two team names (TextViews)
  • Two scores (TextViews)
  • Buttons to increase/ decrease the scores
  • An amount to change the score by (RadioButtons)
    • You must have at least two score options
    • The scores can be changed by anything you want
      • American football: 1, 2, 3, 6
      • Basketball: 1, 2, 3
      • Freestyle wrestling: 1, 2, 3, 4, 5
      • Your own game that you make up your own scores: 1, 50, 99
  • Anything else you think is important to include
  • All 4 buttons change the score (2)
  • RadioButtons allow for different types of scoring (3)

Answer 1

CODE:

MainActivity.java

package com.akshansh.score;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.RadioGroup;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity implements RadioGroup.OnCheckedChangeListener, View.OnClickListener {
    private TextView teamScoreRedTextView;
    private TextView teamScoreBlueTextView;

    private int incrementBy;
    private int teamRedScore;
    private int teamBlueScore;

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

        teamRedScore = 0;
        teamBlueScore = 0;

        //finding all the views by ids, refer to the xml page for the ids,
        //the names are self explanatory
        RadioGroup radioGroup = findViewById(R.id.radio_group);

        teamScoreRedTextView = findViewById(R.id.team_score_red);
        teamScoreBlueTextView = findViewById(R.id.team_score_blue);

        teamScoreBlueTextView.setText(Integer.toString(teamBlueScore));
        teamScoreRedTextView.setText(Integer.toString(teamRedScore));

        Button upButtonRed = findViewById(R.id.buttonUp_red);
        Button downButtonRed = findViewById(R.id.buttonDown_red);
        Button upButtonBlue = findViewById(R.id.buttonUp_blue);
        Button downButtonBlue = findViewById(R.id.buttonDown_blue);

        //setting onClickListeners for these vie
        radioGroup.setOnCheckedChangeListener(this);
        upButtonRed.setOnClickListener(this);
        downButtonRed.setOnClickListener(this);
        upButtonBlue.setOnClickListener(this);
        downButtonBlue.setOnClickListener(this);
    }

    @Override
    public void onCheckedChanged(RadioGroup radioGroup, int i) {
        //selecting the increment value using the radio button
        switch (i){
            case 1:
                incrementBy = 1;
                break;
            case 2:
                incrementBy = 2;
                break;
            case 3:
                incrementBy = 3;
                break;
        }
    }

    @Override
    public void onClick(View view) {
        int id = view.getId();
        //according to the buttons clicked the respective functions are performed
        switch (id){
            case R.id.buttonUp_blue:
                teamBlueScore += incrementBy;
                teamScoreBlueTextView.setText(Integer.toString(teamBlueScore));
                break;
            case R.id.buttonDown_blue:
                teamBlueScore -= incrementBy;
                teamScoreBlueTextView.setText(Integer.toString(teamBlueScore));
                break;
            case R.id.buttonUp_red:
                teamRedScore += incrementBy;
                teamScoreRedTextView.setText(Integer.toString(teamRedScore));
                break;
            case R.id.buttonDown_red:
                teamRedScore -= incrementBy;
                teamScoreRedTextView.setText(Integer.toString(teamRedScore));
                break;
        }
    }
}

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activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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"
    tools:context=".MainActivity">
    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Team Red"
        android:textSize="20sp"
        android:textColor="#EC0519"
        android:textStyle="bold"
        android:layout_marginStart="16dp"
        android:layout_marginTop="16dp"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />
    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Team Blue"
        android:textStyle="bold"
        android:textSize="20sp"
        android:textColor="#065FF4"
        android:layout_marginTop="16dp"
        android:layout_marginEnd="16dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <TextView
        android:id="@+id/team_score_red"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginTop="16dp"
        android:text="0"
        android:textColor="#000000"
        android:textSize="20sp"
        android:textStyle="bold"
        app:layout_constraintEnd_toEndOf="@+id/textView2"
        app:layout_constraintStart_toStartOf="@+id/textView2"
        app:layout_constraintTop_toBottomOf="@+id/textView2" />
    <TextView
        android:id="@+id/team_score_blue"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="16dp"
        android:layout_marginEnd="16dp"
        android:text="0"
        android:textColor="#000000"
        android:textSize="20sp"
        android:textStyle="bold"
        app:layout_constraintEnd_toEndOf="@+id/textView"
        app:layout_constraintStart_toStartOf="@+id/textView"
        app:layout_constraintTop_toBottomOf="@+id/textView" />

    <Button
        android:id="@+id/buttonUp_red"
        android:layout_width="120dp"
        android:layout_height="wrap_content"
        android:layout_marginTop="64dp"
        android:layout_marginStart="16dp"
        android:background="#EC0519"
        android:text="Up"
        android:textColor="#fff"
        android:textSize="20sp"
        android:textStyle="bold"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/team_score_red" />
    <Button
        android:id="@+id/buttonUp_blue"
        android:layout_width="120dp"
        android:layout_height="wrap_content"
        android:layout_marginEnd="16dp"
        android:layout_marginBottom="16dp"
        android:background="#065FF4"
        android:textColor="#fff"
        android:text="Up"
        android:layout_marginTop="64dp"
        android:textSize="20sp"
        android:textStyle="bold"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/team_score_blue" />

    <Button
        android:id="@+id/buttonDown_red"
        android:layout_width="120dp"
        android:layout_height="wrap_content"
        android:layout_marginTop="16dp"
        android:background="#EC0519"
        android:text="Down"
        android:textColor="#fff"
        android:textSize="20sp"
        android:textStyle="bold"
        app:layout_constraintEnd_toEndOf="@+id/buttonUp_red"
        app:layout_constraintStart_toStartOf="@+id/buttonUp_red"
        app:layout_constraintTop_toBottomOf="@+id/buttonUp_red" />
    <Button
        android:layout_width="120dp"
        android:layout_height="wrap_content"
        android:text="Down"
        android:id="@+id/buttonDown_blue"
        android:background="#065FF4"
        android:textColor="#fff"
        android:textSize="20sp"
        android:layout_marginTop="16dp"
        android:textStyle="bold"
        app:layout_constraintEnd_toEndOf="@+id/buttonUp_blue"
        app:layout_constraintStart_toStartOf="@+id/buttonUp_blue"
        app:layout_constraintTop_toBottomOf="@+id/buttonUp_blue" />

    <LinearLayout
        android:id="@+id/linearLayout2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginBottom="64dp"
        android:gravity="center"
        android:orientation="horizontal"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/buttonDown_red">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Points increase by: "
            android:textColor="#000000"
            android:textSize="16sp"
            android:textStyle="bold" />

        <RadioGroup
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:id="@+id/radio_group"
            android:orientation="horizontal">

            <RadioButton
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="1"
                android:textColor="#000000"
                android:textSize="16sp"
                android:textStyle="bold" />

            <RadioButton
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="2"
                android:textColor="#000000"
                android:textSize="16sp"
                android:textStyle="bold" />

            <RadioButton
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="3"
                android:textColor="#000000"
                android:textSize="16sp"
                android:textStyle="bold" />
        </RadioGroup>
    </LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>

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APP SCREENSHOT:

___________________________________________________

Feel free to ask any questions in the comments section
Thank You!