Tutorial Menggunakan Android Checkbox

<?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">

    <CheckBox
        android:id="@+id/checkBox"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="144dp"
        android:layout_marginTop="68dp"
        android:text="Olahraga"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"/>

    <CheckBox
        android:id="@+id/checkBox2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="144dp"
        android:layout_marginTop="172dp"
        android:text="Mengerjakan Tugas"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"/>

    <CheckBox
        android:id="@+id/checkBox3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="144dp"
        android:layout_marginTop="272dp"
        android:text="Tidur"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"/>

    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="144dp"
        android:layout_marginTop="50dp"
        android:text="Selesai"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/checkBox3"/>

</androidx.constraintlayout.widget.ConstraintLayout>

package com.example.myapplication;



import androidx.appcompat.app.AppCompatActivity;



import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.CheckBox;

import android.widget.Toast;



public class MainActivity extends AppCompatActivity {



    CheckBox olahraga,tugas,tidur;

    Button buttonDone;



    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.
activity_main
);

        addListener();

    }



    public void addListener(){

        //Inisialisasi Checkbox dan Button dari activity_main.xml

        olahraga = (CheckBox) findViewById(R.id.
checkBox
);

        tugas = (CheckBox) findViewById(R.id.
checkBox2
);

        tidur = (CheckBox) findViewById(R.id.
checkBox3
);

        buttonDone = (Button) findViewById(R.id.
button
);



        buttonDone.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View view) {

                int totalKegiatan = 0;

                StringBuilder result=new StringBuilder();

                if(olahraga.isChecked()){

                    totalKegiatan+=1;

                }

                if(tugas.isChecked()){

                    totalKegiatan+=1;

                }

                if(tidur.isChecked()){

                    totalKegiatan+=1;

                }

                result.append("\nTotal Kegiatan: "+totalKegiatan);

                //Displaying the message on the toast

                Toast.
makeText
(getApplicationContext(), result.toString(), Toast.
LENGTH_LONG
).show();

            }

        });

    }



}